发明名称 |
METHOD OF CLEANING BISMUTH |
摘要 |
FIELD: metallurgy; methods of cleaning bismuth. ^ SUBSTANCE: proposed method includes selective chlorination of mixtures in the course of electric refining of metallic bismuth in hydrochloric acid solution and removal of chlorine-containing compounds from bismuth melt in the course of fusion of cathode bismuth in hydrogen chloride atmosphere at 350-400°C. Bismuth melt is additionally subjected to pyrometallurgical treatment at bubbling of melt with inert gas at reduced pressure and temperature of 600-700°C. ^ EFFECT: extensive cleaning of bismuth from admixtures, from lead in particular. ^ 2 cl, 1 tbl, 1 ex
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申请公布号 |
RU2281979(C2) |
申请公布日期 |
2006.08.20 |
申请号 |
RU20040136401 |
申请日期 |
2004.12.14 |
申请人 |
INSTITUT NEORGANICHESKOJ KHIMII IM. A.V. NIKOLAEVA SIBIRSKOGO OTDELENIJA ROSSIJSKOJ AKADEMII NAUK |
发明人 |
SHEVTSOV JURIJ VLADIMIROVICH;NOVOSELOV IGOR' IVANOVICH;BYZOV GRIGORIJ PETROVICH |
分类号 |
C22B30/06;C22B9/05 |
主分类号 |
C22B30/06 |
代理机构 |
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地址 |
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