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METHOD FOR PREPARING VANADIUM AND VANADIUM ALLOY POWDER FROM VANADIUM-CONTAINING MATERIALS THROUGH SHORTENED PROCESS
METHOD FOR PREPARING VANADIUM AND VANADIUM ALLOY POWDER FROM VANADIUM-CONTAINING MATERIALS THROUGH SHORTENED PROCESS
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机译:通过缩短过程从含钒材料中制备钒和钒合金粉末的方法
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摘要
Disclosed is a method for preparing vanadium or vanadium alloy powder from a vanadium-containing raw material through a shortened process, including: calcinating a mixture of a vanadium-containing raw material and an alkali compound for oxidation to form a water-soluble vanadate; purifying the vanadate followed by vanadium precipitation to produce an intermediate CaV2O6 with high purity; dissolving CaV2O6 in a molten-salt medium together with other raw materials to form a uniform reaction system; and introducing a reducing agent to the system followed by separation, washing and drying to produce vanadium or vanadium alloy powder having a particle size of 50-800 nm and a purity of 99.0 wt % or more. The method can continuously process vanadium-containing raw materials to prepare vanadium or vanadium alloy powder.
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机译:本发明公开了一种通过缩短的工序从含钒原料制备钒或钒合金粉末的方法,该方法包括:煅烧含钒原料和碱性化合物的混合物以氧化形成水溶性钒酸盐;纯化钒酸盐,然后进行钒沉淀,以生产高纯度的中间体CaV 2 Sub> O 6 Sub>;将CaV 2 Sub> O 6 Sub>与其他原料一起溶解在熔融盐介质中,形成均匀的反应体系;向系统中引入还原剂,然后进行分离,洗涤和干燥,以制得粒度为50-800nm,纯度为99.0重量%以上的钒或钒合金粉末。该方法可以连续加工含钒原料制备钒或钒合金粉末。
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