Comparison of three dust removal methods in asphalt concrete mixing equipment

27 Dec 2019 09:00

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During the use of asphalt concrete mixing equipment, it is easy to produce dust pollution, which will not only affect the mixing effect and the normal operation of the equipment, but also cause damage to the environment and personnel.

Therefore, in order to prevent secondary pollution of dust and avoid injury to the human body, it is necessary to install a necessary dust removal device in the asphalt concrete mixing equipment to play a dustproof role.

When the dust of the stone powder, fly ash and other dust generated during the production of the asphalt concrete mixing equipment is collected by the bag filter, it can be treated in different ways, one is rain curtain type dustproof.

That is, the outlet of the bag filter is connected to a specially constructed closed silo, and a number of water pipes and nozzles are installed on the top of the silo to continuously spray water downward.

The dust generated in the asphalt concrete mixing equipment is collected and discharged into the silo, and then the dust is humidified by the falling water droplets, thereby preventing the dust from being diffused again in the silo.

When the dust in the silo is stored in a certain amount, it is loaded into the transport vehicle by the loader and transported away.

The disadvantage of this method is the waste of water resources and the inconvenience of transportation.

Another treatment method is also a closed silo on the asphalt concrete mixing equipment, but the water pipe, the nozzle, etc. are replaced by an air humidifier or a sprayer to increase the humidity of the air in the silo and perform spray dust removal. Doing so will add some cost.

At present, a large amount of dust removal method used in asphalt concrete mixing equipment is to directly humidify the dust, and only need to add a humidifying mixer at the outlet of the bag filter to prevent the dust from entering the atmosphere again, and also reduce the water. The utility of volume and transportation costs.

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