The Development of Impact Crusher

Of the five crushing machinery series, both impact crusher and hammer crusher crush brittle materials mainly by impact action, so they are often called impact crusher. Compared with jaw crusher, cone crusher and roll crusher that crush materials mainly by squeezing action, impact crusher has the following features:

A. High crushing ratio. The crushing ratio of impact crusher can reach over 50, while it is difficult for jaw crusher, cone crusher and roll crusher to exceed 20. So impact crusher is widely used in the industry where the single-stage crushing is required, such as the limestone crushing in cement industry.

B. Good product particles. Under the influence of impact action, the crushed materials often crack in its most fragile surface. The selectively crushing method ensures higher probability of cubic product particles, the final product of impact crusher in needle flake can be less than 10%, while for jaw crusher, cone crusher and roll crusher, the final product in needle flake will be higher than 15%. Therefore, impact crusher is often used as the final crushing equipment to produce concrete aggregate in the industry where cubic product particles are required, such as the anti-skid surface in high-grade highway.

Ball Mill vs. Roller Mill: Advantages and Disadvantages

Ball mill is a traditional mill machine widely used for mining, cement, paints, pyrotechnics, and ceramics industry. High Pressure Suspension Mill (a kind of roller mill) is a kind of new type mill, improved on the basis of Raymond Mill, with five rollers, produced by Henan Liming Heavy Industry.

Some customers asked us what is the advantage and disadvantage of them two. I arranged some information following for reference.

Advantages of High Pressure Suspension Mill:

(1) Cost of high pressure suspension mill is much lower than cost of ball mill because of after you buy this mill, it is not necessary for you to buy more accessory equipments.

(2) Power consumption of high pressure suspension mill is lower.

Disadvantages of high pressure suspension mill:

(1) The mainly disadvantage is that it will add iron content for products during milling process. But you can use one magnetic separator to reduce the iron content in the final products

Advantages of Ball mill:

(1) Ball mill with ceramic liner and ceramic balls, the finished product size will not add iron content.
(2) Ball mill is commonly used for process quartz to sand.

Corporation Training---Deep Learning Campaign

To enhance the business capability of company staff and deepen staff’s  comprehensive understanding of technical knowledge, Human Resources Department and Training Department launched the “Deep Learning Campaign” actively. On October 29th, the training about crusher and relevant products was conducted officially, and this training is mainly for the company's new employees.

The training about crusher series given by Engineer Liu from our company’s R & D center officially started on the morning of the 29th. With multimedia presentations of PPT, video and audio-video, company’s equipment of various models has been shown comprehensively, including jaw crusher, cone crusher, impact crusher, sand making machine, mobile crushing plant etc. Engineer Liu introduced the machines’ basic structure, working principle, performance characteristics, technical advantages, market, and service condition. Liu also made a comprehensive analysis of the company's overall situation and R&D trend of the crushing machinery.

Engineer Liu made a detailed analysis of the features and performance advantages of our company’s crushing machinery of various models. Through this “Deep Learning Campaign”, the staff have deepened the understanding of machines’ technology and applications, and got to know their work responsibilities and importance. The colleagues attended this training said that they had a clearer understanding of their work and company’s development after this training and. Moreover, their work efficiency had also been improved greatly. At the same time, the participating employees made some suggestions on conducting the similar training programs frequently. They hoped they could often attend such training programs, master their own business knowledge soon and apply to the daily work.

How to attract buyers? —Training from Alibaba

On October 22th, Henan Liming Heavy Industry Science & Technology Co.,Ltd invited the Lecturer Wu Debao, a very smart and charming woman, to offer us some advice about how to attract buyers and make them place orders.

Firstly, the time when we reply the inquiry should be the customers’ work hours. And pay more attention to the price sheet, our lecturer, we can call her A Bao, advise us to use a special price sheet to catch the eye of the buyers. For example, we can place one of our pictures which have some connection with our machines, such as jaw crusher, cone crusher, stone crusher, mobile crushing plant, grinding mill, and sand making machine, to increase the attraction. If possible, we can make the price sheets of different styles for different countries.

Next, it’s not enough to just send emails to customers, we should also call them and try to leave a deep impression on them. Confidence building is the key step to attract the buyers. So be remember to show our sincerity to our customers, and it would be better to be their friends.

Then, we can cultivate a hobby, such as watching movies, listening to music,  keeping a pet etc. since westerners like to do these, we should keep up with their pace then we can have something similar to talk about.

We learn a lot from this training, and suddenly feel refreshed. Liming Heavy Industry staff all hope that one day we can have such kind of training again.

The application of crushers

There are four principal types of primary crushers. The Blake jaw crusher uses a double toggle to move the swinging jaw and is built in a variety of sizes from laboratory units to large sizes having a feed inlet 84 by 120 in. (213 by 305 cm). The Dodge jaw crusher uses a single toggle or eccentric and is generally built in smaller sizes. The Gates gyratory crusher has a cone or mantle that does not rotate but is moved eccentrically by the lower bearing sleeve. The Symons cone crusher also has a gyratory motion, but has a much flatter mantle or cone than does the gyratory crusher. The top bowl is spring-mounted. It is used as a primary or secondary crusher.

Secondary crushers include the single-roll crusher and the double-roll crusher which have teeth on the roll surface and are used mainly for coal. Smooth rolls without teeth are sometimes used for crushing ores and rocks. The hammer crusher is the type of secondary crusher most generally used for ore, rock, and coal. The reversible hammer mill can run alternately in either direction, thus wearing both sides of the hammers.

Crushing and pulverizing are processes in ore dressing needed to reduce valuable ores to the fine size at which the valueless gangue can be separated from the ore. These processes are also used to reduce cement rock to the fine powder required for burning, to reduce cement clinker to the very fine size of Portland cement, to reduce coal to the size suitable for burning in pulverized form, and to prepare bulk materials for handling in many processes. See also Materials-handling equipment.


Division of industrial mill machine by output size

Indsutry mill can divided to following stages by output size:

1. coarse grinding: raw material size in the range of 40-1500mm,the finished product size is 5-50mm
2. medium grinding: raw material size in the range of 10-100mm,the finished product size is 5-10mm
3. fine grinding: raw material size in the range of 5-10mm,the finished product size is under 100μｍ
4. super fine grinding: raw material size in the range of 0.5-5mm, the finished product size is under 10-25μｍ

Under the above division, you can choose the proper type grinding mill for your business requirement. Henan Liming Heavy Industry produces many types grinding mill for process limestone,barite,marble,granite,kaolin,calcite,and other hardness ore, the main equipment are raymond mill, super pressure suspension grinder mill, super fine grindier mill, super pressure trapezium grinder mill,vertical mill,ball mill,etc.

Trapezium Grinder Mill: output size in the range of 1.6-0.045mm,the fineness can reach0.038mm

Vertical Grinder Mill: output size in the range of 0.045mm(325mesh),the fineness can reach 1250mesh.

Raymond Mill: output size in the range of 613-440μｍ(1.613mm-0.44mm),100-425mesh.

High pressure suspension grinder mill: finished product size can be adjusted in the range of 80-425mesh(fineness can reach1000mesh.

Super fine grinder mill: output size in the range of 5-45μｍ(325-3250mesh)

Note :Pleae keep in mind hardness,humidity,toughness of material will influence the production capacity and output size.

Liming Heavy Industry Sand Making Machine is used to Process the Weathered Sand

With the development of science and technology, sand making technology is also transformed and innovated constantly, and is becoming more and more widely used. Nowadays, river sand resources are becoming increasingly scarce, the weathered sand mining has been attracting people’s attention greatly. At present, there is a weathered sand crusher aimed at providing a kind of weathered sand crusher which can process weathered sand into river sand institute for building construction use. This kind of weathered sand crusher is used to crush weathered sand including hopper, tooth shape drum and tooth profile plates. The hopper is equipped with the tooth shape drum and tooth profile plates, with the clearance fit between them.

      The weathering of sand and rock formation, according to their causes, rocks can be classified into igneous rocks, sedimentary rocks and metamorphic rocks. sand is the weathered sandstone and shale in sedimentary rocks. Surface rocks can be weathered to the loose soil parent material. Though parent material has no fertility, it already has certain ventilation storage properties and can decompose to release a small amount of mineral nutrients. The birth of some micro-organisms and lower plants on the parent material marks the beginning of soil-forming process. Under the action of the lower plants, etc. rock weathering accelerates the improvement of properties of parent material, and the soil fertility develop continuously and gradually forms the shallow original soil, which can provide the possibility of the growth of higher plants. While the birth of and herbs can accelerate the process of soil forming, develop the soil and deepen the materials which constitute the soil, and finally make the soil consist of both inorganic and organic matter, and have three phases, namely solid, liquid, gas.

       VSI sand making equipment of Liming Heavy Industry Science & Technology Co., Ltd is used to process the weathered sand and enhance the utilization of the weathered sand greatly. This series of sand making machine is applicable to the crushing and reshaping of soft or medium hard and extremely hard materials. It’s widely applied to all kinds of ores, cement, refractory, Aluminum Fan soil clinker, carborundum, glass raw materials, mechanisms for building sand, stone and various kinds of metallurgy slag. Compared to other types of crushing machines, especially for high-hard, special hard and corrosion-resistant materials such as silicon carbide, carborundum etc., sand making equipment has been widely applied and is becoming increasingly an essential part of people's lives.


The Maintenance of Sand Washing Machine --- Liming Heavy Industry After-sales Service

XSD series sand washing machine is widely used in building site, gravel plants, concrete dam building site of hydropower station and many other industries. It has a high degree of cleaning, reasonable structure, large capacity, low power consumption and loses less sand during the washing process. In particular, XSD series sand washing machine’s transmission parts are separated from water and sand, so the failure rate is significantly lower than the current commonly used machine.Thus it is the best choice for sand washing machine industry to upgrade and update.

The maintenance of sand washing machine:

First, we should always check the oil level of reducer, the tightness of V-belt, the gear’s meshing level and lubrication conditions, and whether the connection is loose or fast to ensure stability of the machine in normal working condition. At the same time the adequate lubrication of friction parts and regular filling grease are necessary.

Second, the lubrication oil should be replaced in time a month later after the first time being added to reduction gears. The oil should be filtered when being added. The viscosity of lubricants in the South should be higher than that in the North.

Third, the sand washing machine should be under the charge of a professional technician when being used. The operator must possess a certain degree of technical knowledge and should be conducted technical hands-on training before the sand washing machine is installed to ensure that he can understand the principles, performance and be familiar with operating procedures. 

Finally please equip the maintenance tools, lubricants and the associated accessories.

Some ways to increase the cement grinding efficiency

1. to enhance the ventilation of mill to improve the surroundings of mills
To enhance the ventilation of mill is the effective methods to increase the production capacity and to reduce the power comsumption.

2. to adopt the new type scaleboard to improve the material of the mill parts
The new type easy grindability spare parts is widely used now days for prolong the service life of parts and grinding media

3. to add grinding aid to increase the grinding efficiency
There have many kinds of grinding aid,most of them are organic surface-active material. Some research has shown the grinding aid of ethanol,butanol, butanol oil, and rolamine work out fine.

4. to reduce the temparature of cement to improve the quality of cement
High temparature will cause the dihydrate gypsum dewatering  in cement processing, which will make cement false setting and material cementation.


The Tips to select the primary crusher

Generally speaking, the jaw crusher and impact crusher are used as primary crushermore.The term "primary crusher," by definition, might including any type and size of crushing machine

The term implies that at least two stages of crushing are involved, but in many cases the machine which performs the function of initial crusher is the only crusher in the plant.

The factors influencing the selection of a crusher for this service are much the same, regardless of how many crushing stages there are in the flowsheet; therefore, the term "primary crusher," by common usage, is applied to the crusher which takes up the job of reduction where the blasting operations leave off.

   

 Selecting the right type and size of primary crusher is a problem of prime importance in the designing of a crushing plant of any nature and size. Usually this machine is the largest and most expensive single item of equipment in the plant; a mistake in the choice can only be remedied fully by replacement; and, because the entire primary crusher house arrangement is generally "tailored" to fit the crusher, such replacement is almost always a costly procedure. While personal favoritism toward some particular type of crusher may safely be allowed to swing a close decision, it should never blind the engineer or operator to the merits of other types, nor to the limitations of his favorite.

The following factors all have a more or less important bearing upon the choice of the primary crusher.

1. The name, hardness,humidity of material

2. The hourly, daily or yearly capacity are required

3. The final product size or discharging size

4. Type and size of quarry equipment

5. Method of feeding the crusher.

The first three of these factors wiII almost always be ascertainable at least to a close approximation before the matter of crusher choice is taken up. Sometimes, as when a new crushing plant, 01' a new primary crusher set-up, is to be installed at an existing operation the last three factors will be pre-established. Otherwise, it is sound practice to consider them as a part of the problem of crusher selection. The primary crushing setup is closely linked to the quarrying or mining operation, and it is only by careful adjustment of all equipment selections to the general plan of operation that optimum operating results may be realized.

While it is convenient to discuss the influence of these several factors separately, it is well to keep in mind that they are more or less closely interlocked, and that a change in one of them may necessitate altering one or more of the others.

In addition to the factors listed there are usually a few which are peculiar to each individual problem such as labor costs and so on. Any plant design problem is an economic as well as an engineering one. We are concerned he re chiefly with the engineering phases.

VSI5X Sand Making Machine-Henan Liming

Through 1 years research on traditional sand making machine, The new type---VSI5X series sand making machine is successful launched by Henan Liming Heavy Industry Science & Technology Co. Ltd.

VSI5X series sand making machine can produce high quality sand stone aggregate, which specially used in highway, railway construction, hydroelectric project and concrete batching plant. Moreover, it is an ideal equipment for artificial sand making and stone reshaping.
Applicable to: cement, glass, iron ore, river stone (limestone, granite, basalt, etc.), tailings, stone waste, and more.

Compared to traditional sand making machine, VSI5X Sand Making Machinehas the following advantages;
1. Absorbs Germany manufacturing technology,;
2. Optimized rotor to make material through rate increase around 30%;
3. Combined hammer design to make the use cost reduce around 30%;
4. Added hydraulic and oil lubricating system to make maintain and servicing easily;
5. The production capacity can reach 640TPH;
6. Adopting international standard electric motor that has the benefit of high efficiency and low noise.

Henan Liming Heavy Industry Science & Technology Co, Ltd is a leading supplier of crushers and mills with 22 years manufacturing experience. At least three types new products are launched by our products R&D center every year, to satisfy the sand and stone aggregate marketing needs.

The grinding mills used in processing fly ash

Fly ash is one of largest emissions of the industrial waste residues in current China. Nowadays, the yearly industrial slags have reached 30 million tons, and with the development of power industry, the emissions of fly ash from coal-fired power factories will increase year by year. A large number of unprocessed fly ash will generate dust and pollute the atmosphere; if discharged into the water system, the fly ash can cause the rivers blockage and the toxic chemicals contained in it will be harmful to the human body and life-forms. Therefore, based on based on conserving resources and reducing pollution, handling and utilizing the fly ash has become a newly and closely concerned area. Currently the most promising ways of utilizing fly ash is to grind them by grinding mills, then applied them to cement mixing, mortar, fillers, bricks making and others.

Based on the current mill technology development, large-scale ultra-fine mill has been able to achieve a one-time ultrafine materials processing. The fine fly ash materials being processed through the mills are with uniform particle size and with improved surface activity. If added to the concretes directly they will save a lot of cement raw materials and also, they will improve the workability of concrete mixing materials and improve the plasticity and stability of reinforced concretes. Even in some cement production enterprises, people blend fly ash, in accordance with the ratio of 8%, into different cement clinkers to make cement products.

At present the main mill equipment to process fly ash include the following ones:

The first one is vertical mill machines short for vertical mill.

Vertical mill uses large-scale roll system to grind high-volume materials. Compared with ordinary mill, its strength lies in large-scale equipment and operating automation. The output capacity of the usual vertical mills can be up to 100-500 tons per hour or more. The rollers of the Vertical mills are controlled by a special hydraulic system so the operation is flexible and convenient and the repair and maintenace is very easy. At present in the domestic market, vertical mill has been far ahead of many other grinding mills and Raymond mill equipment in a vary grinding processes because of its comprehensive performance of high-yield and energy-effient.
The second one is Trapezium Grinding Mill. Trapezium Grinding Mill includes Super Pressure Trapezium Mill and the newly MTW Series European Technology Trapezium Mill. The traditional grinding roller and grinding ring are designed multi-level ladder shape in the Trapezium grinding mill, which slows down the dropping speed of the materials between the grinding rollers and grinding rings and extends the grinding time to the materials; the pressure is more strong because the high pressure springs placed horizontally, which increases the fineness of the final products and the output. It usually performances better to produce 100-800 mesh powder with a capacity of 20-50 tons per hour.

The development and untilization of fly ash is wider and wider, the technical request to grinding mill’s technology is higher and higher. The traditional Raymond mill and ball mill on market can not meet the demand for the processing capacity and fineness in the industrial production any more. The new type of vertical mill and trapezium grinding mill will surely be the mainstream equipment in milling macchines because of their latest technological achievements and facilitate efficient performance.
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Three-rings and Medium-speed Micro-powder Grinder—The New Type Ultrafine Mill

HGM series Three-rings and Medium-speed Micro-powder Grinder is suitable to produce fine and ultrafine powder. It is mainly applicable to various kinds of non-inflammable and non-explosive brittle materials with Moh’s hardness less than 6 scale, such as the calcite, cretaceous, calcium carbonate, dolomite, kaolin, bentonite, talc, mica, magnesite, illite, pyrophyllites and vermiculite, sepiolite, attapulgite, pareto stone, diatomite, barites, gypsum, alum, graphite, fluorite, phosphate rock, kalium ore, float stone etc.

Henan Liming Heavy Industry Science & Technology Co., Ltd is the professional manufacturer of industrial grinding mills. The industrial grinding system is composed of vibrating feeder, jaw crusher of fine crushing, grinding mills (Raymond grinder, High pressure suspension mill, Super pressure trapezium mill, Three-rings and medium-speed micro-powder grinder), dedustor, fan, integrated electric control etc. In order to satisfy customers’ requirements for the processing of different rocks, fineness, capacity, application and different technological requirements, our company always follows the principle of adjusting measures to local conditions and optimizing investment environment, and aims at insuring that the investor can achieve the best economic benefits. As for the production project of industrial grinding mills, our company can send technical personnel to the customer site to conduct site investigation, planning and design technology. Our technical personnel are also responsible for the installation, commissioning and maintenance of late.

Three-rings and medium-speed micro-powder grinder is the ultrafine grinder which adopts Sweden advanced grinding technology. According to the development trend of domestic grinding industry and market demand, three-rings and medium-speed micro-powder grinder is the latest ultrafine powder grinding equipment which is specially suitable for clients to process superfine powder.

According to clients’ various requirements for raw material, final product size, capacity etc. The models of three-rings and medium-speed micro-powder grinder produced by Liming Heavy Industry include:

HGM60 three-rings and medium-speed micro-powder grinder,

HGM80 three-rings and medium-speed micro-powder grinder,

HGM100 three-rings and medium-speed micro-powder grinder.

The Classification of Sand Washing Machine and its Working Principle and Characteristics

As a kind of sand making production equipment, sand washing machine is  widely applied to gravel pits, mining, building materials, transportation, chemical industry, water conservancy and hydroelectric power, concrete mixing plant and is used for washing, grading and dehydration of materials. Sand washing machine is classified into spiral sand washing machine and wheeled sand washing machine according to its structure and working principle.

Wheeled sand washing machine, with a novel sealing structure and reliable transmission device, has a reasonable structure, large capacity, low consumption, high cleanliness and little loss of the sand during the washing process. As the transmission parts of sand washing machine are separated from water and sand, the failure rate is significantly lower than the commonly used sand washing machines in the current market. Wheeled sand washing machine will be an excellent choice if domestic sand washing industry needs upgrading.

Working principle of wheeled sand washing machine: when wheeled sand washing machine works, the electric motor runs slowly with the impeller after being decelerated by the V-belt, decelerator and gears. The sand-stone flows from feed tank into washing tank, rolls with the impellor and grinds each other to remove the impurities on the surface of sand-stone. At the same time, add more water, the strong water flow will take away impurities and some low-weight foreign matters from overflow washing tank, then sand-stone becomes clean. The clean sand-stone is lifted up by vane to out-feed tank to finish the washing task. 

 

Spiral sand washing machine has distinctive characteristics of  simple structure, smooth operation, clean washing, high output etc. It is widely used in construction sites, gravel pits, glass factory, power plant and electrical ground.

Working principle of spiral sand washing machine: spiral sand washing machine is used to clean soil by the promotion function of helical blades. Compared with wheel washing sand machine, spiral sand washing machine has higher cleanliness and better stone-cleaning effect.

Features and Advantages of Cone Crusher

With the continuous growth of China's economic construction, crushing machine industry has been developing rapidly. Cone crushers have been widely used and greatly popularized. The machine’s advantageous design and superior performance are the fundamental reasons for gradually entering the market. The following two advantages of cone crusher make it have great prospects for development in the competition of the market. 

 

First, the cone crusher adopts innovative design principles and the new crushing technology, and can crush materials of different specifications. Cone crushers are widely used in metallurgy industry, building materials industry, road building industry, chemical industry and silicate industry. They are suitable to crush various kinds of ore and rocks of medium or above medium hardness. The cone crusher is of high performance, high efficiency, high capacity, low operation costs, easy adjustment, economic operation, etc. It not only has large reduction ratio, fine and uniform product size but also has low unit power consumption. The machine has few requirements for humidity and is suitable to crush any hard brittle materials. The cone crusher has great prospects in mineral processing industry.

Second, the cone crusher has high throughput in crushing materials and high capacity. Its unique design greatly reduces repair and maintenance costs, therefore the crushing productivity has been greatly improved and production costs have remarkably decreased.


Two Working Methods Of Coarse Powder Mill

        Coarse Powder Mill is widely used when users require that the fineness of the finished products be less than 3mm. According to customers’ requirements, Liming Heavy Industry devoted itself to developing coarse powder grinding machines which can be used in highway, refractories, building materials, bricks, chemical industry, water conservancy, hydroelectric power. Our coarse powder mills are applicable to grinding materials of a certain hardness and humidity such as barite, calcite, potash feldspar, talcum, marble, limestone, basalt. There are a variety of models of mixture processing equipment. According to the raw material, feeding size, outputing size and capacity, we can recommend the proper grinding mills for our customers, which can meet customers’ needs from many aspects.

        In most cases, there are two working methods for coarse powder mill:

a) Dry Production: materials first go into feeding hopper, fall on the unloading cone through feeding valve, and then fall dispersedly on the grinding ring in a 360-degree direction. Next, materials fall into the inner surface of the grinding ring like the waterfall. Finally, after materials being impacted, rubbed and grinded by several grinding rollers, material powder and small particles come out from vibrating screen.

b) Wet Production: the grinding process is basically the same as the process of dry production. The water ways and separation methods of water from materials after grinding are different from each other. These methods can be designed in accordance with customers’ requirements.

In addition, according to specific materials and requirements of capacity,  grinding machines of different models are used in the specific production methods of coarse powder. In this regard, Liming Heavy Industry, with professional technologies, provides customers with cost-effective and reasonably matching industrial grinding equipment which has a wide range of choices and reliable quality. With unique technologies, Liming Heavy Industry has improved the overall design and construction program of the grinding operation, as well as the mill turnkey projects.

Learn How to Prolong the Life of Grinding Mills from Liming Heavy Industry

Grinding mills are mainly used to grind and process calcite, limestone, marble, potassium feldspar etc. Liming Heavy Industry grinding mills include Raymond Mill, High Pressure Suspension Mill, European Technology Trapezium Mill, Three-rings and Medium-speed Micro-powder Grinding Mill and Super Pressure Trapezium Grinding Mill. Each series has various models, which can meet users’ different requirements. Below Liming Heavy Industry will tell you how to maintain and prolong the life of grinding mills.

First of all, during the operation of grinding mills, there should be specialized staff responsible for guarding the machines, and the operating staff must have the good technical level. Before the installation of grinding mills, it is necessary to conduct technical training for the operating staff. So that they can understand the principle performance of grinding mills and be familiar with the operation process. In order to make grinding mills work normally, Equipment Maintenance and Safe Operating System needs to be instituted to ensure the long-term safe-running of grinding mills. Moreover, it is necessary to reserve some maintenance tools and grease accessories..

Next, grinding mills should be examined and repaird after using a period, and the quick-wear parts such as grinding roll, grinding ring and  scraper knife should be repaired and replaced. The bolts and nuts should be checked carefully before or after the use of grinding roll device. When replacing grinding roll after using for more than 500 hours or so, it is necessary to clean various rolling bearings and replace quick-wear parts. As to the fueling tool, manual refueling or grease gun is a good choice.

Finally, grinding mills should be operated in strict accordance with the instructions. If the equipment breaks down halfway,it can’t be modified at random but should be maintained by professionals and technicians.

Power Plant Desulfurization Equipment – Limestone Grinding mills

Limestone Grinding mills produced by Henan Liming Heavy Industry Science & Technology Co., Ltd are used specially for desulfurization in power plant. According to different technical requirements, it’s easy to adjust the particle size and fineness of the final product. With the feeding size 300-400mm, the expected powder can be achieved in one time and the fineness of the final product can be adjusted freely. And limestone grinding mills have high capacity and no pollution.

Since the desulfurization grinding equipment was put on the market, it has always been praised by the users. CAD drawing optimization design not only makes the design unit save a lot of valuable time for computing and drawing, becoming the the leader of the world grinding industry, but also makes Liming Heavy Industry represent the world advanced grinding system system and own the awe of people of the same trade or occupation  all over the world. Recently, according to user needs, our company has researched and developed T190 grinding mills used specially for industrial desulfurization. T190 grinding mill has become the world's largest industrial grinding mill and has become the the leader of the world grinding industry at one stroke.

With the development of China's environmental requirements and standards, the power plant desulfurization equipment industry has developed rapidly in recent years, and the grinding system in the desulfurization system had always been imported previously, in response to environmental requirements, Henan Liming Heavy Industry Science & Technology Co., Ltd introducd exclusively from abroad the advanced grinding technology, and soon launched Super Pressure Trapezium Grinding Mill which is the world's most advanced blast furnace desulfurization grinding equipment in power plant and steel mill. The introduction of the machine reversed the long history of dependence on imports of similar equipment. Coordinated with environmental desulfurization equipment manufacturers and R＆D institutions in Japan, Germany, the United States, Finland etc., Henan Liming Super Pressure Trapezium Grinding Mill achieved good export performance, and has been successfully applied to enterprises such as Datang, Yulian, Shendong, Tiantie, Zheng Aluminum, Wuhan Iron and Steel , Huaneng, China Electric Power etc.

Knowledge about Jaw Crusher

The classification of the jaw crusher: In mining, building materials and infrastructure sectors, the jaw crusher is mainly used as coarse crusher and middle crusher. According to the width of the feeding mouth, it can be classified into three kinds—large, medium and small crushers. The feeding mouth width of the large jaw crusher is greater than 600MM, the medium-sized jaw crusher, 300-600MM, and the small crusher, less than 300MM.

The key components (moving jaw and fixed jaw) of the jaw crusher: the fixed jaw plate (fixed jaw) is fixed vertically (or the top is slightly extraversive) on the anterior machine body; the moving jaw plate (moving jaw) is extraversive, forming two crushing chambers (working chamber) with fixed plate (with the large one on the top and the small one beneath it). The moving jaw does cyclical reciprocating motion towards the fixed jaw, sometimes separate from it and sometimes coming close to it. When separating, materials goes into the crushing chamber, finished products come out from the lower part; when coming close, materials between two jaw plates will be crushed by extrusion, bending and splitting effects.

According to different swing methods of the moving jaw plate, the crusher can be classified into three kinds: simple swing crusher, complex swing crusher and integrated swing crusher.

There are no unified stipulations about the models of the jaw crusher. In general, manufacturers set models on their own. At present, the most common jaw crushers are PE series, which are widely used in mining, metallurgy, building materials, highway, railway, water conservancy and chemical industry etc.

http://www.mill-crusher.com/products/jaw_crusher.html   
http://www.break-day.com/2010/product/crushing/jaw_crusher/  

Features and Advantages of Stone Production Line

Stone production line

Stone production line mainly includes impact crusher, jaw crusher, vibrating screen and vibrating feeder.

Stone production line has advantages in all aspects:

Stone production line is a dedicated production line providing building sand and stones, and it can save 50% energy compared with traditional sand making machine. It can make various rocks, gravel and river pebbles into building sand in various sizes. With uniform particles and high compressive strength, compared with natural sand and that produced by ordinary hammer crusher, the final sand can better meet building requirements and improve construction quality.

Stone production line has the the following features:

Reliable performance

Professional design

Convenient operation

High efficiency.

Artificial sand production line, reflecting the latest technology in the new century, is mainly composed of vibrating feeder, jaw crusher, sand making machine, circular vibrating screen and highly efficient sand washing machine. The use of advanced centralized control ensures the smooth discharge, reliable operation, high efficiency and energy saving in the entire process.

The features and advantages of stone production line are as follows:

For the same capacity, its investment is only 1/3-1/5 of conventional production line.

Sand and gravel production cost is only 1/3-1/4 of conventional production line.

High degree of automatic production, 3 production staff in each class.

Short payback period, the investment can be recoverd in three months.

Stone Paper Equipment-Henan Liming

The stone paper has been a hot topic for a long time, but how to make paper from stone? In order to do so, the grinding equipment is needed, and the HGM series Three-ring and Medium-speed Micro-powder mill of Henan Liming Heavy Industry Science & Technology Co.,Ltd is a good choice for customers who are interested in stone paper. Our micro powder mill can grind limestone into the powder of 2500 mesh which can be used to make paper. Many businessmen who want to invest in stone paper industry contact Liming Heavy Industry to get to know the detailed information about stone paper grinding mill and micro powder mill. Liming Heavy Industry superfine grinding mill has been the necessary equuipment for stone-paper-making.

 Stone paper required very high fineness, which means the stone powder has to reach micron size. Although the present grinding mills including Raymond mill, high pressure suspension mill, super pressure trapezium mill etc. which can grind raw materials into the powder of 30-3250, however, the most suitable equipment for stone-paper-making is our Three-ring and Medium-speed Micro-powder mill.

Our HGM series Three-ring and Medium-speed Micro-powder mill is designed basing on our 20 years’ manufacturing experience and the Swedish advanced machine manufacturing techniques, and has been leading the world tide. So, please contact us if you are insterested in stone paper industry.

Our contact details:
Email: info@limingco.com
Tel:  0086-371-67371699
Fax:  0086-371-67992699
http://www.break-day.com/2010/

What a bad day!

Yesterday was really a bad day for me! I did't sleep well at night because of serious stomachache. Unfortunately, I was on duty yesterday so I had to get up early. I felt dizzy and tired when I got up. When I took my temperature I found I had a fever nearly 39 degree. I went toa clinic to get some medicine, then I came to work by bus.


After I took some medicine, I felt a little better and began to post products on my micro-blog. I uploaded and shared our  products on Facebook, Twitter and Flickr. The machines are as follows: Jaw Crusher, Raymond Mill, CS series Cone Crusher, TGM series Trapezium Mill and Impact Crusher. Moreover, I also shared some common minerals which can be processed by Liming Heavy Industry Crushers and Grinder Mills.


I took a nap after lunch and felt much better In the afternoon.  I went on working untill 5:30 p.m. I went to bed very early last night and had a good rest.

http://www.mill-crusher.com/products/jaw_crusher.html
http://www.mill-crusher.com/products/raymond_mill.html
http://www.mill-crusher.com/products/symons_cone_crusher.html