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成钢利用本省钒渣资源优势,用电炉炼钢生产中采用钒渣直接合金化冶炼的22MnVN钢,其钢筋各项性能达到英国BS4449∶1978标准要求。钒的回收率达到85％以上,钢锭成本较用钒铁低26.11元/t钢。文章还详细介绍了钒渣直接合金化的还原剂选择;钒渣在不同时期加入的操作技术;电炉冶炼中在CaO存在的条件下影响钒的回收率的因素。实践证明:采用钒渣直接合金化工艺生产含钒(<0.20％)钢,化学成份稳定、工艺操作简便可行。
Chengdu Iron and Steel into the use of the advantages of vanadium slag, electric furnace steel production by vanadium slag direct alloying smelting 22MnVN steel, the performance of the British steel BS4449: 1978 standards. Vanadium recovery rate of 85% or more, the cost of steel ingot vanadium iron with low 26.11 yuan / t steel. The article also introduces the choice of reductant for the direct alloying of vanadium slag, the operation technique of adding vanadium slag in different periods, the factors affecting the recovery of vanadium in the presence of CaO in EAF. Practice has proved that: Vanadium slag direct alloying process to produce vanadium (<0.20%) steel, chemical composition is stable, process operation is simple and feasible.