Based on the steelmaking dust treatment in domestic, some new methods as the drum charging, the rolling crusher and mass treatment were applied to solve the problem of the steelmaking dust treatment and mass production.

Study on Chopping and Throwing Parameters of the Chopping Knife with Curved Surface and Straight Edge;

For the problem of breaking stalk with hit shear type and stubble with double shafts, the principle of press chop type with single shafe and the models of chopping with knife of different radius are put forward.