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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.
Granulation technology is one of the most effective measures to improve the poor permeability of heap containing ore, and choosing the proper acid-resistant binder is the key to the success of copper ore heap leaching.In this paper, The results of granulation experiments showed that Biometek-WLAG001 was an ideal acid-resistant binder. The single-factor test showed that the amount of binder, water spray, rotation speed, curing time, the amount of maturation and acidification, aging time The effects of different factors on the compressive strength and wet strength of the pellets were investigated. The response surface methodology was used to investigate the influence of the amount of binder, curing time, the amount of acidification and curing time on the pellet wet strength. Design-Expert 8.0 The test results were optimized and analyzed.The mechanism of action between binder and ore was studied by means of Fourier transform infrared spectroscopy and Zeta potential measurement.The results showed that chemical adsorption between binder and ore did not exist Electrostatic gravitation.