| 低品位氧硫混合铜矿的酸性制粒及机理 |
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| 引用本文： | 罗毅, 温建康, 武彪, 尚鹤. 低品位氧硫混合铜矿的酸性制粒及机理[J]. 工程科学学报, 2017, 39(9): 1321-1330. DOI: 10.13374/j.issn2095-9389.2017.09.004 |
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| 作者姓名： | 罗毅 温建康 武彪 尚鹤 |
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| 作者单位： | 1.北京有色金属研究总院生物冶金国家工程实验室, 北京 100088 |
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| 基金项目： | 国家自然科学基金资助项目(51574036) |
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| 摘 要： | 制粒技术是改善含粉矿堆浸渗透性差最有效的措施之一,同时选择合适的耐酸黏结剂是铜矿制粒堆浸成功的关键.本文以氧硫混合铜矿为研究对象,对其进行了制粒试验研究,研究结果表明Biometek-WLAG001是一种理想的耐酸黏结剂;单因素条件试验考察了黏结剂添加量、喷水量、转速、固化时间、熟化加酸量、熟化时间等因素对球团抗压强度、湿强度的影响;采用响应面法考察了黏结剂添加量、固化时间、熟化加酸量、熟化时间对球团湿强度的影响,并采用Design-Expert 8.0软件对试验结果进行了优化与分析.采用傅里叶红外光谱分析、Zeta电位的测定等分析手段研究了黏结剂与矿石之间的作用机理,结果表明黏结剂与矿石之间存在化学吸附作用,不存在静电引力作用.
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| 关 键 词： | 氧硫混合铜矿 低品位 制粒 黏结剂 渗透性 |
| 收稿时间： | 2016-12-22 |
Acid agglomeration and mechanism analysis of a low-grade oxide-sulfide mixed copper ore |
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| LUO Yi, WEN Jian-kang, WU Biao, SHANG He. Acid agglomeration and mechanism analysis of a low-grade oxide-sulfide mixed copper ore[J]. Chinese Journal of Engineering, 2017, 39(9): 1321-1330. DOI: 10.13374/j.issn2095-9389.2017.09.004 |
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| Authors: | LUO Yi WEN Jian-kang WU Biao SHANG He |
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| Affiliation: | 1.National Engineering Laboratory of Biohydrometallurgy, General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| 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. |
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| Keywords: | oxide and sulfide mixed copper ore low-grade agglomeration binder permeability |
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