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对攀钢雾化钒渣直接冶炼钒铁,进行了实验室研究。用钒渣直接冶炼含钒量较高的钒铁合金,必须分两步进行,第一步还原钒渣中的氧化铁,分离金属铁,进一步富集钒,提高钒铁比;第二步还原氧化钒,分离氧化钛,得到含钛低的钒铁合金。对第一阶段还原氧化铁,比较了气相和熔态两种还原方法,否定了气相还原方法,探寻了影响熔态预还原的主要因素和最佳工艺参数。对第二阶段的深度还原,研究了四种主要氧化物的还原规律,影响还原速度和还原程度的主要因素。实验结果表明:采用分段选择性还原钒渣的冶炼工艺,可以得到含钒较高和含钛较低的钒铁合金。
Pangang vanadium slag vanadium slag directly smelting, conducted a laboratory study. Vanadium slag directly smelting vanadium-iron alloy containing higher vanadium, must be carried out in two steps, the first step to restore the vanadium slag in the iron oxide, the separation of metallic iron, further enrichment of vanadium and improve the ratio of ferrovanadium; the second step reduction oxidation Vanadium, the separation of titanium oxide, vanadium-titanium alloy obtained low titanium. For the first stage reduction of iron oxide, the two reduction methods of gas phase and molten phase were compared, the method of gas phase reduction was negated, and the main factors affecting the pre-reduction of molten metal and the optimum process parameters were explored. For the second stage of the deep reduction, the reduction of the four main oxides, the main factors that affect the reduction rate and the degree of reduction are studied. The experimental results show that vanadium-iron alloy with higher vanadium content and lower titanium content can be obtained by smelting process with segmental selective reduction of vanadium slag.