| The using process of the four representative collectors,sodium ethyl-xanthate,sodium isobutyl-xanthate,SN-9# and n-butyl trithiocarbonate,in the dressing workshop is simulated.It shows that all the four beneficiation reagents can release CS2,and the concentration of CS2 in the workshop has exceeded the relevant national standards.The secondary pollution of beneficiation reagents causes for concern. |