多钒酸铵生产三氧化二钒的工艺研究

Research on the Process of V_2O_3 Production from Ammonium Polyvanadate

以多钒酸铵(APV)为原料,在密闭电阻炉中,利用多钒酸铵自身分解产生的初生氢和外加碳质还原剂相结合的方式还原生产三氧化二钒。实验结果表明:在1 000℃下,配入不超过3%的焦粉,在电阻炉内还原3h可获得V含量≥66%、C含量≤0.05%的高纯度三氧化二钒,并可实现工业化生产。

V2O3 was produced with ammonium polyvanadate （APV） as the raw material in an airtight re- sistance furnace, based on the combined reduction of the nascent hydrogen resulted from self-decomposition of ammonium polyvanadate and additional carbonaceous reductant. The results show that at 1 000 ℃ and with the addition of less than 3% coke powder,the high purity V2O3 with w（V）≥66 % and w（C）≤0.05% can be obtained by 3 h reduction in the resistance furnace,and the commercial production can be realized.