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我厂13m~3小高炉自1970年投产以来,一直使用80%左右的牛首山矿和20%利国矿进行冶炼,但绝大部分时间采用100%的牛首山矿冶炼铸造生铁。牛首山矿成分:TFe 41～45%,CaO 3%以下,SiO_2 17～32%,P 0.2～0.4。S0.05～0.2,MgO<0.5%,Al_2O_3 2～4%;造渣量一般在1800公斤到2000公斤之间。一开始使用该矿石冶炼,操作技术跟不上,产量低,指标差,经常悬料结瘤。几年来,我们在上级党委的正确领导下,高举《鞍钢宪法》的旗帜,组成“三结合”的攻关小组,用毛主
Since our plant 13m ~ 3 small blast furnace was put into operation in 1970, it has been used for smelting about 80% of Niushou Mine and 20% Liuguo Mine, but most of the time, it uses 100% Niushou Mine to cast pig iron. Niushou Mine: 41-45% TFe, CaO 3%, SiO 2 17-32%, P 0.2-0.4. S0.05 ~ 0.2, MgO <0.5%, Al_2O_3 2 ~ 4%; slagging generally between 1800 kg to 2000 kg. The beginning of the use of the ore smelting, technical operation can not keep up, low yield, poor indicators, often suspend nodules. In the past few years, under the correct leadership of the Party committees at the higher levels, we held high the banner of “Ansang Steel Constitution” and formed the “three combined” research team.