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提出RH碳酸盐分解CO2脱碳工艺。通过从RH上升管喷吹碳酸钙粉剂实现钢水脱碳和净化钢液的目的。分析RH碳酸盐分解CO2的脱碳机理,并进行工业试验,考察RH碳酸盐分解CO2脱碳工艺对钢水洁净度的影响。结果表明,采用RH碳酸盐分解CO2脱碳工艺缩短RH精炼处理时间3 min,吨钢成本降低3~5元。铸坯的平均w(T[O])可达0.001 0%以下,显著提高钢水的洁净度。
Put forward the RH carbonate decomposition CO2 decarbonization process. The purpose of decarburization and purifying molten steel is achieved by blowing calcium carbonate powder from the RH riser. The decarbonization mechanism of RH carbonate decomposition CO2 was analyzed and industrial experiments were conducted to investigate the effect of CO2 decarbonization of RH carbonate on the cleanliness of molten steel. The results show that using RH carbonate decomposition CO2 decarburization process shorten the RH refining treatment time 3 min, the cost per ton of steel reduced 3 to 5 yuan. The average slab w (T [O]) up to 0.001 0%, significantly improve the cleanliness of the molten steel.