| 铁矾法炼锌工艺中回收银的研究 |
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| 引用本文： | 沈湘黔,谢建国.铁矾法炼锌工艺中回收银的研究[J].矿冶工程,1992,12(2):51-55. |
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| 作者姓名： | 沈湘黔 谢建国 |
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| 作者单位： | 长沙矿冶研究院
(沈湘黔)，长沙矿冶研究院(谢建国) |
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| 摘 要： | 在铁矾法炼锌工艺中,溶解于溶液中的Ag~+吸附于锌焙烧料中残余的闪锌矿ZnS(0.3—0.5wt%S)表面,或生成银铁矾型化合物使银富集于酸浸渣。控制沉矾过程中焙砂的用量,保证沉矾前液清亮是降低铁矾渣中的银含量的有效措施。高酸浸出渣中的银铁矾型化合物须酸分解转化为可浮的银矿物。故从高酸浸出渣Ag(300g/t)中可用超酸浸出—硫化浮选法回收银,银的回收率76.54%,银精矿品位4456.0g/t。
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| 关 键 词： | 炼锌 铁矾法 回收 银 硫化浮选 |
A STUDY ON SILVER RECOVERY IN THE JAROSITE PROCESS FOR ELECTROLYTIC ZINC PRODUCTION |
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| Shen Xiangqian Xie Jianguo.A STUDY ON SILVER RECOVERY IN THE JAROSITE PROCESS FOR ELECTROLYTIC ZINC PRODUCTION[J].Mining and Metallurgical Engineering,1992,12(2):51-55. |
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| Authors: | Shen Xiangqian Xie Jianguo |
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| Affiliation: | Changsha Research Institute of Mining and Metallurgy |
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| Abstract: | In the jarosite process the precipition of the dissolved silver ions as acanthite on the surfaces of sphalerite in the calcine(0.3-0.5wt% S)or as argentojarosite-type compounds ( ATC ) is responsible for silver concentration on the acid leach residue.Ensuring no solids in the pre-jarosite precipitation solution and using no calcine as neutralizing reagent in the jarosite precipitation would be effective in reducing silver concentraction in jarosite residue. In addition it is necessary to convert ATC into floatable minerals. Silver can be recovered from acid leach residue (300g Ag/t) by the process of superacid leach-sulfuration flotation at a recovery of 76.54% with the concentrate of grade of 4456.0g/t. |
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| Keywords: | Zine hydrometallurgy Jarosite process Silver recovery Sulphuration flotation |
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