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| Design and Application of Circulating Fluid Bed Technology on Two-stage Roasting Process of Gold Concentrate |
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Received:July 03, 2015
Revised:July 07, 2015
Accepted:July 10, 2015
Published Online:December 24, 2015
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| DOI：10.3969/j.issn.1007-7545.2016.01.009 |
| KeyWord:refractory gold concentrate; fluidized bed roasting; circulating fluid bed roasting; gold extraction; two-stage roasting |
| Author | Institution |
| Li Yun |
北京矿冶研究总院 |
| Zhang Lizheng |
招金矿业股份有限公司 |
| Wei Jin |
招远市招金金合科技有限公司 |
| Wang Yun |
北京矿冶研究总院 |
| Liu Hongxiao |
新疆星塔矿业有限公司;新疆星塔矿业有限公司 |
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| Abstract: |
| A new type of two stage roasting process to pretreat refractory gold concentrate was proposed with the first stage adopting fluidized bubbling bed (BFB) roasting to remove arsenic and the second stage adopting circulating fluidized bed (CFB) roasting to remove sulfur. Plant practice shows that quality of calcine obtained from this new combination apparently outperformed that of conventional combination where the second stage applies BFB as well, and gold cyanidation leaching rate can be improved by 2~3 percent point. |
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