目前,我省小高炉生铁的含硫量,大多数还在0.2%以上。根据最近中共河北省委的要求,在最短期间内,要把生铁合硫量普遍降低到0.2%以下。要降低小高炉生铁含硫量,除了必须提高炉内脱硫的效果以外,还应该采用炉外脱硫。石灰粉炉外脱硫的经 At present, the sulfur content of pig iron in our small blast furnace is still above 0.2%. According to the requirements of the CPC Hebei Provincial Committee recently, the sulfur content of pig iron should be generally reduced below 0.2% in the shortest period. To reduce the sulfur content of small blast furnace pig iron, in addition to the need to improve the effect of desulfurization furnace, it should also be used outside the furnace desulfurization. Limestone furnace desulfurization by the outside