Development Status and Analysis Mathematical Models for Screening;

The research of the cantalever vibrating screen's screening efficiency;

Study on the mechanism of aperture blinding in the screening of moist fine coal;

Numerical study on collision process between particles and screen plate;

Progress and trend of screeners for fine difficult materials;

The emulator,consisted of a feed hopper,a screen and a product baffle,can dynamically simulate the whole screen process.

Results of the experiment show that the air injection has a distinct effect on fiber fractionation,and a good fractionation performance is obtained with increa.

The results showed that R203、P203 fractionation of wheat straw soda-mechanical pulp accounted for more than 50% and the S2 layer of the fiber was fibrillated in some degree,it is the r.

In order to achieve the needed length fiber,fractionation of softwood pulp fiber were carried out with a cylindrical hydrocyclone.

Discussion on the Mesh Size Sieving Method for Imported Iron Ore;

In this experiment, sweet potato residue which after starch extraction was taken as raw material, and we studied the extraction process of dietary fiber from sweet potato by sieving.