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试验根据粉状还原焙砂直接入电炉熔化分离,分离后的炉渣经后步工序提炼出钒、钛、以达到综合利用的目的要求,用正交法进行了热模拟试验。其特点是熔化分离时,焙砂中配入2.3%的 Na_2CO_3,所得铁液的 C,P,S 符合工业纯铁的要求。所得含钒钛渣再添加10%Na_2CO_3进行氧化钠化焙烧,焙烧温度1000～1050℃,焙烧时间2.0～2.5小时,水浸时的固:液:1:5,水浸1小时(搅拌),水浸温度80℃,钒的一次转浸率可大于88%(浸液的 PH 值为8～9),从焙砂到 V_2O_5的总收率为77～84%,碱耗为3.3吨/吨 V_2O_5。
According to the experiment, powdery calcined roaster was melted and separated directly into the electric furnace. The separated slag was refined into vanadium and titanium by the later steps to achieve the purpose of comprehensive utilization. The thermal simulation was carried out by orthogonal test. It is characterized by melt separation, calcined with 2.3% of Na_2CO_3, the resulting molten iron C, P, S meet the requirements of industrial pure iron. The obtained vanadium-containing titanium slag is further added with 10% Na 2 CO 3 for sodium oxide roasting, the roasting temperature is 1000~1050 ° C., the roasting time is 2.0-2.5 hours, the solid / liquid ratio is 1: 5 and the flooding is 1 hour, The flooding temperature is 80 ℃, the primary transfer rate of vanadium can be more than 88% (the pH of the immersion liquid is 8-9), the total yield from calcine to V2O5 is 77-84%, and the basic consumption is 3.3t / t V_2O_5.