Discussion on the types of crushers and selection criteria
Thread Content
Regarding the crushers used in the coal chemical industry’s powder production process, which type is generally employed, or under what operating conditions is it better to use a particular type of crusher? Discussion is held on aspects such as the crusher’s output, the particle size of the feed and discharge material, the type of coal, and whether powdering occurs.
OP, let me start with one. 1. If it’s for coking purposes, where the requirement is that particles of size 3mm or less should account for over 80% of the total, then ring hammer crushers are more suitable, as this application requires the material to be crushed or ground into fine particles! For bituminous coal and anthracite, use 2. If particle size requirements exist and over-grinding must be avoided, then a toothed roller crusher is a better choice; even if there is a certain level of viscosity, that’s not a problem as it can be addressed through differential speed control! Lignite, bituminous coal, and the like are all suitable; for bituminous coal and anthracite, it’s necessary to control the humidity – levels above 12% may make things less effective. Lignite can probably tolerate a humidity level of up to 50%. Some people say that higher humidity levels don’t matter, but I think that’s nonsense! Hehe. 3. If the material you’re dealing with is brittle and has low viscosity, a single-shaft crusher can also work well; however, the ring hammer crusher is more widely used in practice! Personal opinion