Dust Problems in Crusher Production and Improvement Measures

Dust problems and improvement measures in the production of crushers produce a large amount of dust during the production of mine resources such as stone processing. These dusts not only pollute the environment but also cause great harm to the health of workers. Therefore, in the processing of stone production lines, etc. Among them, it is necessary to find a solution to dust.

Dust problems and improvement measures in the production ofcrushers produce a large amount of dust during the production of mine resourcessuch as stone processing. These dusts not only pollute the environment but alsocause great harm to the health of workers. Therefore, in the processing ofstone production lines, etc. Among them, it is necessary to find a solution todust.

First, some problems in dust removal in crusher production

1. The filtering area of the bag filter is too small, and theactual amount of air extraction is insufficient. It is difficult to formmicro-negative pressure in the dust cover and the cavity of the crusher at thefeeding port of the crusher, resulting in a large dust environment in the workenvironment.

2. When the moisture content of the crushing material is large,the dust particles entering the dust collector are coarser than the broken drymaterial. The bag dust collector is easy to peal the bag, and the materialfeeder is easy to be blocked, resulting in a drastic increase in theventilation resistance of the bag filter and a decrease in the ventilationcapacity, dust is serious.

3. The dust enters into the pipe of the dust collector. The elbowat the inlet pipe increases the resistance of the system, and the elbow part iseasily abraded and blocked by the dust. The dust collected by the screwconveyor and the sub-grid conveyor bag filter removes the power consumption andincreases the mechanical maintenance workload. It is often necessary to removethe sub-grid wheel feeder and, over time, the flange of the feeder flangeleaks, intensified ash leaks.

4. During the falling process of the material on the beltconveyor, the air and the material enter the airtight dust cover together. Thedust-laden gas diffuses through the gap and the hole on the cover wall to theoutside of the cover to pollute the environment. In addition, due to theimproper setting of the dust collection point at the corner of the beltconveyor, the dust collector has almost no effect on the drop of dust due tothe opening and stopping of the lower belt conveyor.

5. In order to reduce the dust caused by air leakage from thecrusher shell, in actual production, when the material is dry, it is oftensprayed at the inlet of the crusher, and the result is that the bag filter bagand the feeder of the bag filter are intensified.

6. Bag filter and accessories more failures, not only affect thenormal dust, but also increase the maintenance workload of the equipment. Fromthe statistics of equipment maintenance, the poor quality of spare parts is amajor cause of equipment failure.

Second, for the existing problems, some technical measures need tobe improved

1. The bag filter at the corners of the crusher and the beltconveyor is updated to a bag filter. According to the characteristics of dust,use water and oil filter. The bag filter is arranged in the open air and itsshell is insulated and waterproofed. In order to ensure the reliable operationof the equipment, attention should be paid to the brand and specification whenpurchasing the key parts of the bag filter to reduce the failure rate of theequipment.

2. To improve the process arrangement of bag filter, arrange thedust remover of the crusher according to the direction of the belt conveyor.Transform the standard type hopper of the bag filter into a double hopperstructure, thus eliminating 1 screw conveyor, elevating the bag type dustcollector is conducive to the arrangement of the air intake pipe. The air inletbox is set at the air inlet so that the dust in the discharge port of thecrusher directly enters the air inlet box of the dust collector, which savesthe elbow, reduces the system resistance and improves the dust collectionefficiency.

3. The dust at the corner of the belt conveyor is restricted bythe site conditions. The chute and the dust cover can not be changed. The dustremoval process is arranged in the form of mining, so that the dust cover is ina state of slight negative pressure to eliminate dust from the belt conveyor.

4. According to the need to be conducive to the service life ofthe filter material and pulse valve, but also take into account the dust fromthe ash falling place, in order to improve the comprehensive dust removaleffect of the crusher and the belt conveyor. When the dry material is broken,according to need crusher material inlet watering.

5. Strengthen the management of dust removal equipment, regularlycheck the confinement of the dust cover, and find problems in a timely manner.Evaluate the target environment and the dust emission of the bag filter,perform dust management on a regular basis, use the economic lever to mobilizethe enthusiasm of the staff, increase the maintenance level of the dust removalequipment, and minimize the dust pollution.