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.

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.

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.

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.