铝热法制备粗钒合金试验

Preparation of Crude Vanadium Alloy by Aluminothermic Process

以V2O5和Al粉为原料,利用自制竖炉在实验室条件下进行铝热法制备电解精炼用粗钒合金试验,研究了单位炉料热量和配铝系数对V回收率和合金中Al含量的影响。稳定性试验结果表明:单位炉料热量为4 080 kJ/kg、配铝系数为100%的条件下,得到的粗钒合金平均含V 92.65%,Al 2.79%,过程中钒回收率平均为84.34%,该种合金可用于电解精炼制备金属钒。

Vanadium pentoxide and aluminum powder were used as raw materials to prepare crude vanadium alloy for electrorefining by aluminothermic process in the shaft furnace. The influences of unit thermal value of burden and aluminum coefficient on V recovery and AI content in the alloy were studied. Stability test results show that under the conditions of 4 080 kJ/kg of unit thermal value of burden and 100% of aluminum coefficient, the alloy obtained contains 92.65% of V and 2.79% of AI in average, and the average recovery rate of vanadium is 84.34% , which meet the requirements of vanadium metal preparation by electrorefining process.