The depression of pyrite in selective flotation by different reagent systems - A Literature review
The depression of pyrite in selective flotation by different reagent systems - A Literature review
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DOI：
10.1016/j.mineng.2016.06.018
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发表时间：
2016-10-01
影响因子：
4.8
通讯作者：
Lauten, Rolf A.
中科院分区：
文献类型：
--
作者：
Mu, Yufan;Peng, Yongjun;Lauten, Rolf A.
黄铁矿是一种广泛伴生的有用矿物。由于它很容易进入浮选精矿，因此在微分浮选中处理是有问题的。黄铁矿可能由于天然或自诱导的疏水性或捕收剂诱导的疏水性而漂浮。它的浮选也可以通过活化其他矿物中的铜或铅离子来增强。通常需要抑制剂来选择性地抑制黄铁矿。本文对常用药剂体系抑制黄铁矿的机理和效果的基础研究进行了综述。它包括无机试剂（氢氧根离子、氧调节、氰化物、亚砜试剂等），有机试剂如多糖（淀粉、糊精、羧甲基纤维素等），聚丙烯酰胺、木材提取的生物聚合物、二亚乙基三胺和这些方法的组合。总体而言，黄铁矿抑制剂的作用是从黄铁矿表面解吸捕收剂或活化剂，使活化离子失活，阻止捕收剂吸附在黄铁矿上，或使黄铁矿表面亲水。还简要综述了二硫代磷酸盐、二硫代次磷酸盐和硫代氨基甲酸盐等非黄药捕收剂对黄铁矿的捕收机理。(C)2016爱思唯尔有限公司版权所有
Pyrite is a gangue mineral widely associated with valuable minerals. It is problematic to deal with in differential flotation because it easily reports to flotation concentrates. Pyrite may float due to natural or self-induced hydrophobicity or collector-induced hydrophobicity. Its flotation can also be enhanced by the activation of copper or lead ions emanating from other minerals. Depressants are generally required to selectively depress pyrite. In this article, a comprehensive review of the fundamental studies of depression mechanisms and effectiveness of commonly used reagent systems to depress pyrite is presented. It includes inorganic reagents (hydroxyl ions, oxygen conditioning, cyanide, sulfoxyl reagents, etc.), organic reagents such as polysaccharides (starch, dextrin, carboxymethyl cellulose etc.), polyacrylamides, wood extracted biopolymers, diethylenetriamine and a combination of these methods. Overall, the action of pyrite depressants is either to desorb the collector or activator from pyrite surface, deactivate the activating ions, prevent collector adsorption on pyrite, or make the pyrite surface hydrophilic. The mechanisms of some non-xanthate collectors such as dithiophosphate, dithiophosphinate and thionocarbamate in rejecting pyrite were also briefly reviewed. (C) 2016 Elsevier Ltd. All rights reserved.