一、前言硫是重要的化工原料,是我国的短线资源。每年要从国外进口大约30万吨硫磺。我国的硫资源有1/2赋存于煤田地层,从煤矸石中综合回收硫铁矿,不仅合理利用了国家资源,增加企业效益,而且从据本上减少环境污染。几年来的实践证明,采用破碎、 First, the foreword Sulfur is an important chemical raw materials, is China’s short-term resources. Every year, about 300,000 tons of sulfur are imported from abroad. One half of the sulfur resources in our country are found in coalfield strata. The comprehensive recovery of pyrite from coal gangue not only makes rational use of national resources and increases the efficiency of enterprises, but also reduces environmental pollution on the basis of this principle. Years of practice has proved that the use of broken,