In the production process of openca

In the production process of opencast coal mine, a lot of dust is produced in the production process such as surface loess stripping, rock stripping and raw coal mining, which can be classified as productive dust. The most remarkable characteristic of open-pit coal mine is the large-scale equipment, the main mining equipment box is becoming larger and larger, the large-scale equipment will produce dust. In an open-pit coal mine with an annual output of 25 million tons of raw coal, there are about 250 sets of mine equipment. According to statistics, the dust production of these equipment in operation accounts for more than 80% of the total mine dust production.