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| 183Application and experiment of Arsenic and Sulfur Stabilization By Circulating Fluid Bed Roasting Arsenic-bearing Gold Ores |
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Received:November 16, 2015
Revised:November 17, 2015
Accepted:November 18, 2015
Published Online:August 31, 2016
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| DOI： |
| KeyWord:Arsenic-bearing gold ores; Circulating fluid bed roasting, Arsenic and Sulfur Stabilization; Cyanide leaching |
| Author | Institution |
| Li Yun |
Beijing General Research Institute of Mining Metallurgy |
| Zhang Lizheng |
Zhaojin Mining Co Ltd,Shandong Zhaoyuan City |
| Jin Rangong |
Beijing General Research Institute of Mining Metallurgy |
| Liu Hongxiao |
Xinjiang Xingta Kuangye Co Ltd,Xinjiang Tuoli |
| Wang Yun |
Beijing General Research Institute of Mining Metallurgy |
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| Abstract: |
| Arsenic-bearing gold ores was preheated by circulating fluid bed(CFB) roaster, while arsenic and sulfur of gold ores was fixed in calcine. The result shown that the S stabilization efficiency was 75.5% and As stabilization efficiency was 95.3%, while the low-sulfur gold concentrate roasting at 650℃, while adding CaO to concentrate with ω(CaO/Concentrate)=0.12 during the concentrate roasting, which was reactin stoichiometric point of As and S with CaO. At the same time, the whole gold ore of much basic gangue roasting at 700℃, the S stabilization efficiency was 59.4% and As stabilization efficiency was 95.3%. The corresponding caline was leached by sodium cyanide, the high extraction efficiency of Au was obtained simultaneously. The As and S stabilization reaction was strengthened by CFB roasting, which the cleaner production of concentrate and whole gold ore roasting was realized preferably. |
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