Abstract：By comparative analysis of several raw material conditions and process paths of 1Cr14Mn10NiCuN stainless steel, it is found that the process using low nickel hot metal as the main raw material is more competitive for the better composition, temperature and purity of molten iron. 1Cr14Mn10NiCuN stainless steel was smelted with high silicon low nickel chromium-containing hot metal in a plant. The chromium brought in hot metal could save FeCr50 consumption about 66.7 kg/t of steel, and the cost could be reduced about 400.5 yuan/t of steel. However, the recovery rate of chromium in the pretreatment furnace process was only 88%, and the chromium loss which converted into FeCr50 reached 9.1 kg/t of steel, which was equivalent to 54.6 yuan/t of steel. In the process of optimization scheme, it was considered to add the molten FeCr50 melted by alloy melting furnace after the oxygen blowing in the hot metal pretreatment furnace, and to use the silicon in the FeCr50 to reduce the chromium in the slag. After the optimization of process scheme, the chromium recovery rate in the hot metal of low nickel hot metal in pretreatment furnace will be increased to 95%, so that about 5.3 kg/t of steel of FeCr50 addition can be saved in the whole production process, and the cost can be reduced by 31.9 yuan/t of steel.
史彩霞, 游香米. 低镍铁水冶炼1Cr14Mn10NiCuN不锈钢生产工艺优化[J]. 中国冶金, 2022, 32(12): 78-82.
SHI Cai-xia, YOU Xiang-mi. Optimization of production process for smelting 1Cr14Mn10NiCuN stainless steel with low nickel hot metal[J]. China Metallurgy, 2022, 32(12): 78-82.
2022, Vol. 32 
