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近20年来,马钢公司的生铁平均含硫量由0.034～0.037%降为0.019%,并于1973年获得国家优质奖章. 生铁质量的提高,主要是靠降低入炉料的含硫量和提高炉渣的脱硫能力. 在改善炉料方面做了以下一些工作: 六十年代初,入炉料由烧结矿和铁矿石组成;1963年后增加入炉料的烧结矿,减少铁矿石的入炉量,从而炉料含硫量由2.10公斤/吨铁降为1.86公斤/吨铁. 由于原料基地改变,而新基地又远离公司,故需建苏联第一座球团矿厂,于1965年底先建成两台焙烧球团机投产,开始使用球团矿.这期间,球团矿抗压强度低(1240牛顿/个球),且含硫高(0.20%),随后由
In the past 20 years, the average sulfur content of pig iron from Masteel Company has been reduced from 0.034% to 0.037% to 0.019% and the national quality medal was awarded in 1973. The improvement of pig iron quality is mainly due to the reduction of the sulfur content in the charge and the increase of slag Of desulfurization capacity in the improvement of the charge to do the following work: the early 1960s, into the charge by the sinter and iron ore composition; after 1963 into the charge of sintered ore, reducing the amount of iron ore into the furnace, which As the sulfur content of the charge dropped from 2.10 kg / tonne to 1.86 kg / tonne of iron, the first pelletizer of the Soviet Union was to be built due to the change of raw material base and the new base. Since the end of 1965, two roasting During the commissioning of the pellet mill, pellets began to be used, during which the pellets had a low compressive strength (1240 N per ball) and a high sulfur content (0.20%), followed by