钒铝合金用五氧化二钒制取技术研究  

Research on Preparation of Vanadium Pentoxide for Vanadium-aluminum Alloy

作　　者：殷兆迁[1] 孙朝晖[1] 李大标 侯海军 

机构地区：[1]攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室,四川攀枝花617000 [2]攀钢集团钒业公司,四川攀枝花617023

出　　处：《钢铁钒钛》2014年第6期6-12,共7页Iron Steel Vanadium Titanium

摘　　要：钒铝合金主要作为制作钛合金、高温合金的中间合金及某些特殊合金的添加剂,五氧化二钒是制备钒铝合金的重要原料。在实验室条件下,通过返溶除硅、碱性沉钒工艺制备的五氧化二钒符合钒铝合金原料的要求,纯度达到了99.5%,Si、Cr、Fe均小于0.05%。工业试验工艺稳定,五氧化二钒的纯度达到99.5%,杂质含量小于0.05%。确定的适宜工艺参数为:除硅剂A与硅摩尔比为1.05、除硅反应pH值为10.0,除硅反应温度为70℃、除硅反应时间为60 min、沉钒反应沉钒剂与钒摩尔比为3.1、沉钒反应温度为60℃、沉钒反应时间为60 min。Vanadium-aluminum alloy is primarily used as additive in production of titanium alloy, super-alloy and some special alloys, and vanadium pentoxide is an important raw material for the preparation ofvanadium-aluminum alloy. Under laboratory conditions, vanadium pentoxide meeting the requirements forvanadium-aluminum alloy preparation was obtained by re-dissolution for silicon removal and alkaline pre-cipitation of vanadium, with the purity of V2O5 reaching 99.5% and the content of Si, Cr and Fe lessthan 0.05%. After the industrial test, the purity of vanadium pentoxide reached 99.5% and the content ofimpurities was less than 0.05% with stable process. The optimum parameters are as follows： the molar ra-tio of desilication agent to silicon is 1.05, the pH for desilication is 10.0, the temperature and time fordesilication are respectively 70℃ and 60 min; The molar ratio of precipitating agent to vanadium is 3.1,the temperature and time for precipitating reaction are 60 ℃ and 60 min, respectively.

关 键 词：钒铝合金 五氧化二钒 硅 

分 类 号：TF841.3[冶金工程—有色金属冶金]