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| A NEW CHELATING EXTRACTANT H 106 |
| Zhong Xiang;Liang Juanqiu;Yu Qinghua;Cao Shiti;Zhou Zhonghua Changsha Research Institute of Mining and Metallurgy; Ministry of Metallurgical Industry |
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Cite this article:
Zhong Xiang;Liang Juanqiu;Yu Qinghua;Cao Shiti;Zhou Zhonghua Changsha Research Institute of Mining and Metallurgy; Ministry of Metallurgical Industry. A NEW CHELATING EXTRACTANT H 106. Acta Metall Sin, 1982, 18(2): 221-234.
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Abstract The stability of a new hydroxamic acid type chelating extractant H106 and its extraction chemistry have been investigated.After 50 extraction-stripping cycles its loss is very little,and after long time aeration test in HNO_3 medium its stabil- ity is satisfactory.In H_2SO_4 solution,Ga and Ge may be perfectly separated and recovered by co-extraction and respective stripping.The extraction of group Ⅳ or Ⅴ elements in HCl with H106 was available at their own appropriate acidity. The mechanism of metal extraction by H106 and the stability constants of extracted species have also been studied.H 106 is a weak monobasic acid with superior stability and extractability.It forms internal complexing salts with metal ions under testing conditions through oxygen-oxygen coordination.The order of extractability of metal ions is in agreement with order of cumulative stability constants of metal complexes.It shows excellent selectivity in extraction under certain conditions.H106 gives very satisfactory results in recovery of Ga and Ge from H_2SO_4 leach liquor of residue of hydrometallurgical Zn refinery,and may also be used in the determination of micro-quantities of Ti as well as in many other fields.
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Received: 18 February 1982
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