Separation technique and separation machinery in the coal preparation plant;

Application of separating machinery to disposal of waste acid from sulphuric acid plant in Jinlong;

This paper introduces the development in mechanical safety and safety cerification abroad and the mechanical safety certification system which is under implementation in China and analyses the necessity of implementing separating machinery product safety certificatio

The result showed that ①The improved mechanical isolation was more significant than the conventional method;②There was effect of different medium on the growth of cultured hair follicles of goats in vitro in a serum-free medium at 37℃;Williams E medium was markedly better than DMEM/F12;The cultured temperature impacted the growth of hair follicles in the same.

PCBS mechanical separation feasibility by shearing-crush and electrostatic separation were studied.