石横特钢60t转炉负能炼钢实践

Practice of 60t Converter Steelmaking With Minus Energy Consumption in Shiheng Special Steel

通过分析炼钢工序消耗的能源介质和回收能源组成,相应采取了一系列关键节能技术,实现了吨钢-15.033kg标煤负能炼钢的目标。这些关键技术包括,炉口微差压自动调节和"降罩操作",煤气成分自动分析检测控制及稳定煤气发生量的音频化渣技术,以提高转炉煤气回收量;湿式变压蓄热器设备及烟道热喷涂技术以增加蒸汽回收;优化氧枪喷头参数设计,降低冶炼氧耗;采用钢包脱硫技术,减少精炼电耗;采用新型砌筑技术,降低煤气消耗等。

By analyzing the composition of consumption energy medium and recovery energy in steelmaking process, a series of key energy saving technologies were adopted accordingly, then realizing steelmaking goal with minus 15.033 kg standard coal consumption per ton steel. The key technologies include： throat micro gap pressure automatic adjustment and drop hoods operation, gas composition automatic-detection control and audio slag technology of stabling the gas generate volume to enhance converter gas recycling; wet variable pressure hot storage device and flue thermal spraying technology to enhance steam recycling; optimizing the parameter design of oxygen lance nozzle to reduce smelting oxygen consumption; applying ladle desulfurization technology to reduce refining power consumption; and adopting new kind masonry technology to reduce gas consumption and so on.