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Method for improving crushing vibrating screening efficiency

A vibrating screening and vibrating screen technology, applied in chemical instruments and methods, filter screens, solid separation, etc., can solve the problems of difficult operation, high center of gravity of vibrating screens, and many machine failures, etc. The effect of slope height and improving screening efficiency

Inactive Publication Date: 2013-02-06
太原钢铁(集团)有限公司
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Problems solved by technology

[0002] Vibrating screening machine is a common ore size screening equipment after iron ore crushing, and it is the check equipment for the final ore particle size in the grinding process. However, vibrating screens often have low screening efficiency and screen hole blockage during production and maintenance. The structure of the cement beam under the screen is redundant, the ore discharge is not smooth, the dust is large, the thickness of the material on the screen is uneven, the center of gravity of the vibrating screen is high, there are many machine failures, and the load is uneven, resulting in a large cycle load of the original crusher, uneven force, Low ore breaking efficiency, large machine vibration, coarse grain size of ball mill, etc., and high maintenance cost, difficult operation and complicated process

Method used

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Embodiment Construction

[0015] The screen materials include metal woven net, wear-resistant rubber screen and polyurethane screen. The experiment shows that the life of the screen increases in turn, the opening ratio decreases in turn, the screening efficiency decreases in turn, and the weight of the screen decreases in turn. Passing ability decreases in turn. The screen material of the linear vibrating screen is improved to polyurethane screen.

[0016] What kind of sieve hole to choose mainly depends on the requirements for the particle size of the sieved product and the use of the under-sieved product. Compared with sieve holes of other shapes, under the condition of the same nominal size, the particle size of the undersize material passing through the linear sieve hole is smaller. For example, the maximum particle size of the particles passing through the 80%--85% of the size of the square mesh particles. The particle size passing through the rectangular sieve hole is larger than the material p...

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Abstract

The invention discloses a method for improving crushing vibrating screening efficiency. The method is suitable for the reformation of a dual-layer circular vibration screening machine and a dual-layer linear vibration screening machine, and aims to reduce the blockage of screen holes, prolong the service life of spare parts and reduce a failure rate. In the method of the invention, an inclination angle of a screen cloth is reduced; the level elevation of the lower part of a vibrating screen is kept unchanged; the installation height of the upper part of the screen cloth is reduced; the climbing angle of a feeding belt conveyor is reduced to 0 degree to form a horizontal belt conveyor for feeding; the feeding speed and the ore feeding amount of the conveyor are determined according to the operation load of the vibrating screen; the feeding speed and the ore feeding amount of the conveyor are determined according to the thickness of a material layer to be screened by the vibrating screen; the thickness of the ore feeding material layer is 3.8 to 4.2 times of the width of the screen holes; and the screen cloth is fixed on the two sides of a screen box by utilizing spring hooks on the two sides of the screen cloth.

Description

technical field [0001] The invention relates to a method capable of improving crushing and screening efficiency. Background technique [0002] Vibrating screening machine is a common ore size screening equipment after iron ore crushing, and it is the check equipment for the final ore particle size in the grinding process. However, vibrating screens often have low screening efficiency and screen hole blockage during production and maintenance. The structure of the cement beam under the screen is redundant, the ore discharge is not smooth, the dust is large, the thickness of the material on the screen is uneven, the center of gravity of the vibrating screen is high, there are many machine failures, and the load is uneven, resulting in a large cycle load of the original crusher and uneven force. The ore breaking efficiency is low, the machine vibrates greatly, the ball mill enters the grinding particle size and other problems, and the maintenance cost is high, the operation is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B1/28B07B1/46B07B1/48B07B1/50
Inventor 何铁牛
Owner 太原钢铁(集团)有限公司
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