二氧化碳—氧气混合喷吹炼钢实验研究

通过采用冶金反应的热力学分析、热平衡计算及热态实验,研究了CO2与O2混合喷吹炼钢工艺.对喷吹过程中金属熔体内的脱碳过程,铁液、炉渣及炉气成分及温度的变化进行了测试及分析.初步分析了CO2与O2混合喷吹炼钢工艺的可行性.根据热平衡计算可以得出,在炼钢过程中喷入一定浓度CO2气体后,同样可脱除钢中的碳,达到冶炼目的.实验证实,在真空电感应炉炼钢过程中,由于电能热量的补充,使得能满足炼钢过程的热量要求,喷入CO2与O2混合气体可以脱除钢中的碳.

Experimental study of steelmaking with CO_2 and O_2 mixed blowing

This task was got across the physical chemistry analyse and the hot-form experiment,researching adopt the gas-liquid multiphase balanceable energetics and dynamics by using CO2 and O2 mixed-blowing,and the decarbonization disciplinarian inside the metal melt in the blowing process.The composition and temperature diversification disciplinarian of iron and gas in the process of smelt was proved up.Approving the feasibility of the mixing blowing by using CO2 and O2 in the technics of steel-making,the theory gist of CO2-O2 mixing blowing technics of steelmaking was offered.According to the heat balance calculation and preliminary experi-ment,the carbon was taken off achieving the destination of metallurgy by jetting CO2 with certain density during steel making.It was completely possible to jet certain CO2 in blowing steel making due to the supply of energy and application of post combustion in EAF steel making.