Furthermore the depyritization of coals precombustion on the basis of desulphurization mechanism has been reviewed in the light of physical chemcal and biological methods.

• 然后基于脱硫机理，按物理脱硫、化学脱硫和生物脱硫3种方法，对煤中黄铁矿的燃前脱除技术进行了评述。