发明名称 |
METHOD OF REGENERATION OF FREE CYANIDE FROM SOLUTIONS |
摘要 |
FIELD: regeneration of free cyanide in waste technological solutions containing cyanides and heavy metals; non-ferrous metallurgical plants; gold mining and galvanic processes. ^ SUBSTANCE: proposed method consists in treatment of waste technological solutions by mineral acid under conditions excluding formation of gaseous hydrocyanic acid followed by separation of phases: solution of hydrocyanic acid and difficultly soluble compounds of elementary cyanides of metals by settling and/or filtration, leaching of clarified solution and re-use of solution of free cyanide thus obtained. Regeneration of free cyanide is carried out directly in solution being treated without conversion of hydrocyanic acid into gaseous phase. ^ EFFECT: repeated use of cyanide; reduced consumption of cyanide and fresh water; facilitated procedure; extraction of non-ferrous metals from solution in form of compact concentrate. ^ 1 dwg, 2 ex |
申请公布号 |
RU2285734(C1) |
申请公布日期 |
2006.10.20 |
申请号 |
RU20050109447 |
申请日期 |
2005.04.01 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "IRKUTSKIJ NAUCHNO-ISSLEDOVATEL'SKIJ INSTITUT BLAGORODNYKH I REDKIKH METALLOV I ALMAZOV" OAO "IRGIREDMET" |
发明人 |
PETROV SERGEJ VLADIMIROVICH;PETROV VLADIMIR FEOFANOVICH |
分类号 |
C22B11/08;C01C3/02 |
主分类号 |
C22B11/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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