Depressant behavior of tragacanth gum and its role in the flotation separation of chalcopyrite from talc
Depressant behavior of tragacanth gum and its role in the flotation separation of chalcopyrite from talc
复制标题
黄芪胶的抑制行为及其在滑石和黄铜矿浮选分离中的作用
DOI：
10.1016/j.jmrt.2018.05.015
复制
发表时间：
2019-01-01
影响因子：
6.4
通讯作者：
Zhu Xianwen
中科院分区：
文献类型：
--
作者：
Guo Wei;Feng Bo;Zhu Xianwen
瓜尔胶是滑石的有效抑制剂，但对硫化矿物也有一定的抑制作用。为寻找新型选择性抑制剂，研究了黄蓍胶对滑石的抑制效果和机理，并通过浮选试验、吸附试验、Zeta电位试验和XPS分析，考察了黄蓍胶在滑石与黄铜矿浮选分离中的作用。单矿物浮选试验结果表明，滑石的自然可浮性良好，易于报入精矿。瓜尔胶和黄蓍胶对滑石的浮选有较好的抑制作用，且抑制效果不受pH值的影响。混合矿物浮选试验表明，黄蓍胶能有效分离黄铜矿和滑石，铜精矿品位和回收率均较高，且黄蓍胶对黄铜矿的抑制作用小于瓜尔胶。Zeta电位和XPS分析表明，黄蓍胶在滑石粉表面的吸附主要是通过物理作用实现的，其中疏水作用是主要的驱动力，氢键也可能起到一定的作用。(C)2018年巴西冶金、材料和采矿协会。出版社：Elsevier Editora Ltda
Guar gum is an effective depressant of talc, but it also has some depression effect on sulfide minerals. To find new selective depressants, the depression effects and mechanisms of tragacanth gum to talc were studied and its role in the flotation separation of chalcopyrite from talc was investigated by flotation test, adsorption and zeta potential tests as well as XPS analysis. The individual mineral flotation test results showed that the natural flotability of talc is good which make it easy to be reported into the concentrate. The guar gum and tragacanth gum can effectively depress the flotation of talc, and their depression effect is not affected by pH. The mixed minerals flotation tests indicated that the tragacanth gum can effectively separate chalcopyrite from talc, both the copper concentrate grade and recovery are high, besides, tragacanth gum exhibits less depression effects for chalcopyrite compared with guar gum. According to the Zeta potential and XPS measurements, it can be concluded that tragacanth gum adsorbed on talc surface mainly through physical interactions, and hydrophobic interaction was considered as the main driving force and hydrogen bond may also play a role. (C) 2018 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda.