The effect of sodium alginate on the flotation separation of scheelite from calcite and fluorite
The effect of sodium alginate on the flotation separation of scheelite from calcite and fluorite
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DOI：
10.1016/j.mineng.2017.07.016
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发表时间：
2017-11
影响因子：
4.8
通讯作者：
Wei Chen;Q. Feng;Guofan Zhang;Qun Yang;Cheng Zhang-
中科院分区：
文献类型：
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作者：
Wei Chen;Q. Feng;Guofan Zhang;Qun Yang;Cheng Zhang-
以油酸钠为捕收剂，考察了海藻酸钠对白钨矿与方解石、萤石浮选分离的影响。浮选结果表明，海藻酸钠先于油酸钠加入，在pH值为7~12的范围内对方解石和萤石的浮选有选择性抑制作用。用Zeta电位法、接触角测量法和FTIR法研究了海藻酸钠的选择性抑制作用。Zeta电位测量结果表明，海藻酸钠对白钨矿的表面电荷影响不大，但对方解石和萤石的表面电荷有显着影响。接触角测量结果表明，海藻酸钠对方解石和萤石的表面疏水性有不可恢复的选择性降低。FTIR研究表明，海藻酸钠在方解石和萤石表面有化学吸附，在白钨矿表面没有以吸附形式存在。
In this paper, the effect of sodium alginate on the flotation separation of scheelite from calcite and fluorite using sodium oleate as collector was investigated. Flotation results showed that sodium alginate could selectively depress the flotation of calcite and fluorite in pH range of 7–12 when it was added before sodium oleate. The selective depressant effect of sodium alginate was studied using zeta potential measurements, contact angle measurements and FTIR. The zeta potential measurements results showed that sodium alginate exhibited little influence on the surface charge of scheelite but had remarkable effect on that of calcite and fluorite. The results of contact angle measurements indicated that sodium alginate could produce selective, non-recoverable decrease in surface hydrophobicity of calcite and fluorite. The FTIR studies demonstrated the chemical absorption of sodium alginate on calcite and fluorite surface and no form of adsorption on scheelite surface.