There is  hydraulic cone crusher overview  in Choosing  silver equipment:

The hydraulic cone crusher is driven by the motor triangle generation of drive rotation of the impeller centrifugal effect to form a negative pressure to inhale sufficient air mixed with the pulp on the one hand, on the one hand, stirring the mixture of pulp and drugs, while refinement of foam, mineral adhesive foam on top of, the formation of mineralized bubbles float to the pulp surface. Adjust the ram height of the control surface, useful foam scraped by the scraper.

Henan Liming heavy industry is one of the earliest  Large-scale mining machinery manufacturers.you can buy its productions in trust.