国内首次熔融还原工业性试验1989年11月7日在唐山钢铁公司进行。这次试验是将锰矿石、焦炭装入6t 侧吹转炉熔池上部,底部喷吹煤粉,在氧化供热条件下创造还原气氛,使渣中的锰经过还原反应进入金属中直接炼成锰铁。试验进行较顺利,取得初步效果。唐钢自筹20万元资金于1987年12月和1988年8月与东北工学院、上海工业大学、 The first domestic industrial test of melting reduction was carried out in Tangshan Iron and Steel Co., Ltd. on November 7, 1989. The test is the manganese ore, coke into 6t side of the upper part of the molten copper bath, the bottom of the injection of pulverized coal in the oxidation of heating conditions to create a reducing atmosphere, so that the slag after the manganese reduction reaction into the metal directly into manganese iron. The test was carried out smoothly and achieved initial results. Tangshan Iron raised 200,000 yuan of funds in December 1987 and August 1988 with the Northeast Institute of Technology, Shanghai University of Technology,