高硫卡林型金精礦中碳質表征及其對生物預氧化提金的影響

丘曉斌; 溫建康; 黃松濤; 楊洪英; 武彪; 劉美林

doi:10.13374/j.issn2095-9389.2017.05.005

高硫卡林型金精礦中碳質表征及其對生物預氧化提金的影響

doi: 10.13374/j.issn2095-9389.2017.05.005

1) 北京有色金屬研究總院生物冶金國家工程實驗室, 北京 100088
2) 東北大學冶金學院, 沈陽 110819

基金項目:

國家“十二五”科技支撐計劃資助項目（2012BAB10B08）；國家高技術研究發展計劃資助項目（2012AA060501）

詳細信息

中圖分類號: TF111.3
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出版歷程
- 收稿日期: 2016-12-22

Characterization of carbonaceous matter in high-sulfur Carlin-type gold concentrate and its influence on gold recovery in bio-pretreatment product

1) National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China
2) School of Metallurgy, Northeastern University, Shenyang 110819, China

摘要

摘要: 為分析金精礦中碳質在生物預氧化提金工藝中的影響，以貴州泥堡高硫卡林型金精礦為原料，以氣相色譜-質譜聯用儀（GC-MS）分析了樣品中有機碳可能的有機組分；結合拉曼光譜分析了該碳質在微觀空間尺度上碳原子的空間排布特征和規律，并討論了其與劫金性質的關系；結合劫金指數（PRI）測定以及對不同含金溶液的吸附實驗，進一步分析其劫金能力和載金能力；最后結合生物預氧化產品炭漿法（CIP）氰化提金實驗，分析了該碳質在實際生物預氧化提金工藝中的影響.結果表明：礦樣中有機碳組分為干酪根，其裂解氣含有多種干酪根母源有機質，不利于氰化；拉曼光譜分析結果與PRI測試結果吻合，均表明礦樣中碳質具有高劫金性質；在實際生物預氧化產品CIP氰化提金過程中，采用添加活性炭與劫金碳質競爭吸附，可減少10.14%已溶出的金被劫金碳質吸附，后續金浸出率可達80.17%.
- 劫金碳質 /
- 有機碳 /
- 拉曼比 /
- 劫金指數 /
- 生物預氧化
Abstract: To study the effect of carbonaceous matter on gold recovery in bio-pretreatment followed by a cyanide leaching process, the carbonaceous matter was characterized in high-sulfur Carlin-type gold flotation concentrate by gas chromatography-mass spectrometry (GC-MS), Raman spectroscopy, Preg-robbing index tests, and gold loading tests. The results indicate the presence of kerogen in the concentrate, which interferes with the gold extraction due to its strong gold adsorption. Both the Raman and PRI tests show a strong preg-robbing capacity of the carbonaceous matter in the samples. In addition, activated carbon in the cyanidation process of the bio-oxidized product could decrease by approximately 10.14% the adsorption of exposed gold by the carbonaceous matter. A final gold recovery rate is 80.17%.
- preg-robbing carbonaceous matter /
- organic carbonaceous matter /
- Raman ratio /
- preg-robbing index /
- bio-pretreatment

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參考文獻(13)

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