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新余钢铁总厂铁合金厂于1992年6月下旬开始在1,2号锰铁高炉进行白云石直接入炉的工业性试验。此项试验的提出是由于近年来国内锰矿继续贫化,进口锰矿价格高而控制使用,锰烧结矿配比有所下降,致使该厂锰铁渣中(MgO)逐年下降,而(MnO)逐年上升。1992年5月,在入炉锰矿SiO_2和渣铁比分别上升至17.65%和3390kg/t的情况下,(MgO)已降至6.70%,(MnO)已升至7.56%(1980年以来长期维持在5%左右)。综合分析后认为,锰铁渣中(MnO)上升的因素主要是
Xinyu Iron and Steel Plant Ferroalloy Plant in late June 1992 began to carry out in the 1,2 ferromanganese blast furnace into the furnace directly into the industrial test. This test is proposed because of the continuous depletion of domestic manganese ore in recent years, the high price of imported manganese ore and the use of control, manganese sinter ratio has decreased, resulting in the plant manganese iron slag (MgO) declining, and (MnO) year after year rise. In May 1992, (MgO) had dropped to 6.70% and (MnO) had risen to 7.56% (with long-term maintenance since 1980) when the ratio of SiO_2 to slag / iron in the furnace increased to 17.65% and 3390kg / t, respectively At about 5%). After a comprehensive analysis that the main factors in the manganese iron slag (MnO) rise