低品位氧硫混合铜矿的酸性制粒及机理
发布时间：2019-02-26 07:43
【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.
[Abstract]:The technology of granulation is one of the most effective measures to improve the poor permeability of heap leaching of powdered ore, and the selection of suitable acid-resistant binder is the key to the success of heap leaching of copper ore. In this paper, the experiment of granulation of oxygen-sulfur mixed copper ore is carried out. The results show that Biometek-WLAG001 is an ideal acid-resistant binder. The effects of the amount of binder, water spraying, rotational speed, curing time, acid addition and aging time on the compressive strength and wet strength of pellets were investigated by single factor test. The effects of binder addition, curing time, acid addition and aging time on wet strength of pellets were investigated by response surface method. The experimental results were optimized and analyzed by Design-Expert 8.0software. The interaction mechanism between binder and ore was studied by means of Fourier transform infrared spectroscopy (FTIR) and Zeta potential measurement. The results showed that there was chemisorption between binder and ore, but no electrostatic gravitational action.
【作者单位】： 北京有色金属研究总院生物冶金国家工程实验室;
【基金】：国家自然科学基金资助项目(51574036)
【分类号】：TD952
，
本文编号：2430576
[Abstract]:The technology of granulation is one of the most effective measures to improve the poor permeability of heap leaching of powdered ore, and the selection of suitable acid-resistant binder is the key to the success of heap leaching of copper ore. In this paper, the experiment of granulation of oxygen-sulfur mixed copper ore is carried out. The results show that Biometek-WLAG001 is an ideal acid-resistant binder. The effects of the amount of binder, water spraying, rotational speed, curing time, acid addition and aging time on the compressive strength and wet strength of pellets were investigated by single factor test. The effects of binder addition, curing time, acid addition and aging time on wet strength of pellets were investigated by response surface method. The experimental results were optimized and analyzed by Design-Expert 8.0software. The interaction mechanism between binder and ore was studied by means of Fourier transform infrared spectroscopy (FTIR) and Zeta potential measurement. The results showed that there was chemisorption between binder and ore, but no electrostatic gravitational action.
【作者单位】： 北京有色金属研究总院生物冶金国家工程实验室;
【基金】：国家自然科学基金资助项目(51574036)
【分类号】：TD952
，
本文编号：2430576
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