低品位氧硫混合銅礦的酸性制粒及機理

羅毅; 溫建康; 武彪; 尚鶴

doi:10.13374/j.issn2095-9389.2017.09.004

低品位氧硫混合銅礦的酸性制粒及機理

doi: 10.13374/j.issn2095-9389.2017.09.004

北京有色金屬研究總院生物冶金國家工程實驗室, 北京 100088

基金項目:

國家自然科學基金資助項目(51574036)

詳細信息

中圖分類號: TF803.21
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- 文章訪問數: 726
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出版歷程
- 收稿日期: 2016-12-22

Acid agglomeration and mechanism analysis of a low-grade oxide-sulfide mixed copper ore

National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China

摘要

摘要: 制粒技術是改善含粉礦堆浸滲透性差最有效的措施之一,同時選擇合適的耐酸黏結劑是銅礦制粒堆浸成功的關鍵.本文以氧硫混合銅礦為研究對象,對其進行了制粒試驗研究,研究結果表明Biometek-WLAG001是一種理想的耐酸黏結劑;單因素條件試驗考察了黏結劑添加量、噴水量、轉速、固化時間、熟化加酸量、熟化時間等因素對球團抗壓強度、濕強度的影響;采用響應面法考察了黏結劑添加量、固化時間、熟化加酸量、熟化時間對球團濕強度的影響,并采用Design-Expert 8.0軟件對試驗結果進行了優化與分析.采用傅里葉紅外光譜分析、Zeta電位的測定等分析手段研究了黏結劑與礦石之間的作用機理,結果表明黏結劑與礦石之間存在化學吸附作用,不存在靜電引力作用.
- 氧硫混合銅礦 /
- 低品位 /
- 制粒 /
- 黏結劑 /
- 滲透性
Abstract: Agglomeration technology is one of the most effective measures to enhance the poor heap permeability of ores caused by the presence of fine particles. Selecting the proper acid resistant binder is key to the successful heap leaching of copper ore. The agglomeration of oxide-sulfide mixed copper ore was studied in this paper, and results show that Biometek-WLAG001 is an ideal acid resistant binder. The effects of binder amount, water spray amount, rotational speed, curing time, aging acid addition amount, and aging time on the compressive and wet strengths of agglomerated pellets were investigated in single-factor experiments. The effects of binder amount, curing time, aging acid addition amount, and aging time on the wet strength of agglomerated pellet were further studied via a response surface methodology, and results were optimized and analyzed by Design-Expert 8.0 software. The interaction mechanism between the binder and the ore was investigated by Fourier transform infrared spectroscopy analysis and Zeta potential measurements. Results reveal that the binder and ore undergo chemical adsorption but not electrostatic attraction.
- oxide and sulfide mixed copper ore /
- low-grade /
- agglomeration /
- binder /
- permeability

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