Crushing of solid waste refers to the use of external force to overcome the cohesion force among the solid waste particles and divide the large solid waste into small pieces. The crushing purposes of solid waste are as follows:
(1) Reduce the volume of solid waste, in order to transport and storage.
(2) Provide the required granularity for separation of solid waste, in order to recycle useful material effectively.
(3) Prevent damage for the separation, incineration and pyrolysis equipment or furnace caused by the sharp and large solid waste.
(4) Increase the specific surface area of solid waste, improve the incineration, pyrolysis, molten operation effect.
(5)Prepare for the next and further processing. For example, if use coal gangue to make brick or cement, it is necessary to process coal gangue into certain size.
(6) When solid waste is processed with landfill disposal, the waste of compaction density and uniform can speed up the complex soil recovery.
In a word, solid waste processing converts waste into suitable size for further processing or economically sorting or for landfill disposal.