铝热法制备钒铝合金过程中Fe、Si、O、C等杂质的控制  

Control of Fe、Si、O、C and Other Impurities in the Process of Aluminothermic Preparation of Vanadium Aluminum Alloys

作　　者：李建兵 陈彦兄 李晓东 麻建军 LI Jianbing;CHEN Yanxiong;LI Xiaodong;MA Jianjun(CNMC Ningxia Orient Group Co.,Ltd.,Shizuishan 753000,China)

机构地区：[1]中色(宁夏)东方集团有限公司,宁夏石嘴山753000

出　　处：《湖南有色金属》2023年第4期68-71,共4页Hunan Nonferrous Metals

基　　金：2023年宁夏回族自治区重点研发计划项目(2023ZDYF0027)。

摘　　要：试验研究了铝热法生产钒铝合金过程中Fe、Si、O、C等杂质含量的影响因素。研究结果表明,五氧化二钒中的Fe、Si含量控制在0.06%以下,将铝粉中的Fe含量降至0.07%以下,铝粉中的Si含量控制在0.05%以下,冷却料经磁选除铁后使用,控制氧化钙中SiO_(2)≤0.20%,氟化钙中SiO_(2)≤0.10%,产品中的Fe、Si含量小于0.18%。产品中的O含量随着单位反应热量的增加呈降低趋势,当单位反应热量在3200 kJ/kg时,产品中的O含量在0.02%左右。当单位反应热量超过3200 kJ/kg时,产品中的O含量变化不明显。在石墨炉体内壁涂刷一层氧化钙保护层,不仅可以降低产品中的C含量,还可延长炉体的使用寿命。The influence factors of Fe、Si、O、C and other impurities in the process of producing vanadium aluminum alloy by aluminothermic method were studied.The research results show that the content of Fe and Si in vanadium pentoxide is controlled below 0.06%,the content of Fe in aluminum powder is reduced below 0.07%,and the content of Si in aluminum powder is controlled below 0.05%.The cooling material is used after iron removal by magnetic separation,and the content of SiO_(2)in calcium oxide is controlled below 0.20%,SiO_(2)in calcium fluoride is controlled below≤0.10%,and the content of Fe and Si in the product is less than 0.18%.The O content in the product decreases with the increase of unit reaction heat.When the unit reaction heat is 3200 kJ/kg,the O content in the product is about 0.02%.When the unit reaction heat exceeds 3200 kJ/kg,the O content in the product does not change significantly.Applying a layer of calcium oxide protective layer on the inner wall of graphite furnace can not only reduce the content of C in the product,but also prolong the service life of furnace body.

关 键 词：铝热法 钒铝合金 反应热量 杂质 控制 

分 类 号：TF805.1[冶金工程—有色金属冶金]