In the process of crushing and transporting calcium carbide, calcium carbide dust will inevitably be produced. A large amount of calcium carbide dust floating in the air, on the one hand, will pollute the environment and endanger human health; on the other hand, because the calcium carbide dust produced during the crushing process also contains certain effective ingredients, the generation of calcium carbide dust will also cause a certain amount of calcium carbide loss and increase Consumption of calcium carbide in the production of large PVC. In order to solve the above problems, a calcium carbide dust recovery device is added in the calcium carbide crushing process, and the calcium carbide dust is recovered and then added to the generator for reuse.

The general process is to use a loader to add calcium carbide with a particle size of less than 300mm to the jaw crusher. After rough crushing, the calcium carbide with a particle size of less than 120mm enters 4 calcium carbide silos (mainly for storage) under the conveyance of the belt conveyor. The calcium carbide in the silo is then sent to the belt conveyor through an electric feeder, and the calcium carbide powder with different particle sizes is classified through a linear vibrating screen, and then sent to a double-cavity crusher for fine crushing, small pieces of calcium carbide and finely crushed calcium carbide Then it is sent to two calcium carbide fine silos for use by a large inclination belt conveyor. During production, the thinly broken calcium carbide is transported to the calcium carbide storage bucket on the generator with a belt conveyor for the generator to use.