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为了进一步降低炼钢成本,南京钢铁股份有限公司100 t复吹转炉,基于单渣法操作,依托现有造渣料,通过转炉磷收支平衡和脱磷热力学计算,得出转炉脱磷所需的最小渣量,在单渣法终渣热态返回利用的基础上,探索出成本最低的适宜渣料冶炼技术,实现了石灰吨钢消耗降低42.4%,白云石吨钢消耗降低12%,石灰石吨钢消耗增加34.3%,吨钢成本降低4.64元/t。
In order to further reduce the cost of steel making, Nanjing Iron and Steel Co., Ltd. 100 t double blown converter, based on the single slag operation, relying on the existing slagging material, through the balance of phosphorus balance of the converter and dephosphorization thermodynamic calculations, dephosphorization required converter Based on the single-slag final slag back to the hot use of the basis to explore the lowest cost appropriate slag smelting technology to achieve a 42.4% reduction in consumption of lime tonnage, dolomite consumption of steel reduced by 12%, limestone Steel consumption increased by 34.3%, steel cost reduced by 4.64 yuan / t.