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| Technical Transformation of Two-stage Roasting for Refractory Gold Concentrates |
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Received:May 05, 2015
Revised:May 05, 2015
Accepted:May 11, 2015
Published Online:October 19, 2015
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| DOI：Doi：10.3969/j.issn.1007-7545.2015.11.010 |
| KeyWord:refractory gold concentrates; two-stage roasting; technical transformation; dilute phase transportation; gold extraction |
| Author | Institution |
| Zhang Yuehong |
青海省第一地质矿产勘察院 |
| Li Yun |
北京矿冶研究总院 |
| Liu Hongxiao |
新疆星塔矿业有限公司 |
| Luan Dongwu |
招远市招金金合科技有限公司;招远市招金金合科技有限公司 |
| Huang Haihui |
北京矿冶研究总院 |
| Wang Yun |
北京矿冶研究总院 |
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| Abstract: |
| The main affecting factor on gold cyanidation leaching rate of refractory gold concentrates is high content of residual sulfur and arsenic after two-stage roasting. The roasted dust was re-roasted in second fluidized bed roaster transported by ilute phase transportation to remove residual sulfur and arsenic, followed by cyanidation leaching. The plant practice shows that gold cyanidation leaching rate of re-roasted dust is improved from 88.40% to 92.64%. |
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