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Four crushing process workflow and contrasts

Date：：2015-03-10 11:35 From：clirik

Currently, there are a wide varieties of crusher broken equipment on the market. Different crusher crushing process also has the diversity of composition, which gives the customer in the process of design and production time difficult. To this end, the crusher manufacturers now form a comprehensive technology portfolio in detail. There are four crusher crushing process combinations: closed-circuit crushing process, open circuit production process combination, half open production process combination crushing, squeezing crushing process combinations.

Closed-circuit crushing process

Combination of the so-called closed circuit crushing process produced, is to complete the crushing of the raw material in the crusher, there is not an additional device configuration. Only materials to meet the size requirements of the discharge from the bottom of the hole or gap crusher sieve, sieve bar, which tend to emphasize on the size of the crushed material requirements, and therefore, the process line is very simple. Generally consists of a combination of jaw crusher + hammer crusher, namely crushing + crushing process combinations.

The process is not only full of hammer blows, the back plate back, beyond the mutual impact between the material, scrub and other works, but also an additional increase of the material crushing, shearing, rubbing, the combined effects of grinding, while simplifying the crushing process line equipment configuration. But it increases the difficulty of crusher wear-resistant structural design and choice of materials, hammer and sieve, sieve bar wear rate, increasing the amount of maintenance and replacement of wearing parts costs.

In short, the process line for crushing soft materials, and requires less than 10% moisture content of the material.

Open circuit crushing process

The so-called open-circuit crushing production process combination is not set sieve, sieve strip beneath the rotor, the broken material is discharged directly from the bottom. Open production must sieved to get particles of the desired requirements, and thus, in the process should increase the screening equipment. The process line equipment configuration: General by jaw crusher + hammer crusher (hammer crusher) + vibrating screen combinations.

Compared with closed-circuit crushing process, the open circuit crushing process reduces the design complexity of the crusher, and the selection and dependence on wear-resistant materials. High yield, save power, the moisture content of the raw material can be closed slightly higher moisture content production gob.

The open circuit crushing process have two shortcomings, one after a few crushed, slightly larger than the diameter of the material passing, that the small particle size of the material, light weight, great difficulty re-broken, too sieve material Anti-back, reducing the crushing efficiency, increases power consumption; the second is for a higher moisture content of materials, increase the amount of sieve, sieve material to reduce the anti-back is the key.

Semi-open-circuit crushing process combinations

The so-called semi-open-circuit crushing process is a combination of closed-circuit and open-circuit crushing process, set up some screen bar discharge area, its arc region may be 90 °, or slightly greater than 90 °, the effect of generating section closed production. The process line production equipment configuration and open the same combination of crushing process: + technology is a combination of finely chopped + by + jaw crusher hammer crusher (hammer crusher) + vibrating screen combinations, namely coarse screening. Semi-open production process combination crusher is widely applied.

From the crushing effect in terms of the production of semi-open to achieve the optimal combination of the first two crushing process, but from the perspective of the pros and cons, half open production has also inherited the deficiencies of the first two crushing process.

Squeezing crushing process combinations

The squeezing crushing process combinations is to double-stick extrusion crusher as the center of the closed-loop production of crushing process combinations. Because the entire process equipment consisting of a circulatory system, so called closed-circuit crushing process combination of production. Its technology portfolio is: Impact Hammer Crusher + screening + double roll crusher + break extrusion machine + screening, and then return to the cycle double roll crusher squeeze, that is crushing crushing + screening + The technology portfolio.

Do not set the bar in the discharge area of the screen, a corresponding increase in line speed of the rotor, give full play to open production crusher crushing chamber in the crushing process, to extend the residence time of the material in the crushing chamber to increase the speed hammer blows, the back plate multiple back, repeatedly striking the material between the number of scrub, to enhance the "cleavage broken" efficiency. Not only reduces wear hammer, and simplify the counterattack hammer crusher structure.

This process not only greatly reduce the sieve material returns, reducing the moisture content of the material, and to completely release the burden crusher improve the crushing efficiency. Disadvantages squeeze broken, because of the high price of the extruder, leaving the process is a combination of one-time investment is higher.

All in all, the first three crushing process is a combination of hammer (head) crusher, impact crusher crushing process-oriented portfolio, and therefore, the principle of design and crushing efficiency and raw material moisture level of impact crusher screening effect is the key In addition, for a hard shale, coal gangue is concerned, broken or great difficulty, to solve these problems is difficult, therefore, recommended here extrusion crushing process combinations.

Our company is a professional crusher and sand making production line manufacturer, we configurate reasonable crushing equipment and sand making production line for customers at the same time design the practical crushing process line to ensure the maximization of economic production.

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