发明名称 Improvements in or relating to the extraction of vanadium from vanadium-bearing material
摘要 <p>Vanadium-bearing material containing alkaline-earth metal compounds is roasted, say at 1500-1700 DEG F., to form water-soluble alkaline-earth metal vanadates, and quenched in water to bring the vanadates into solution. Preferably the quenched material is ground in the quenching liquid. The quench residue is leached with sulphuric acid to extract remaining vanadium, and the acid liquor and quench liquor finally mixed and heated to precipitate the vanadium as oxide. If calcium sulphate is present, addition of the acid liquor until the mixed liquors are slightly acid precipitates it, and after its removal mixing is completed.</p>
申请公布号 GB492212(A) 申请公布日期 1938.09.16
申请号 GB19370017468 申请日期 1937.06.23
申请人 VANADIUM CORPORATION OF AMERICA 发明人
分类号 C01G31/00;C22B34/22 主分类号 C01G31/00
代理机构 代理人
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