首页|金属无机复合抑制剂强化分离白钨矿与方解石

金属无机复合抑制剂强化分离白钨矿与方解石

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研究由硫酸铝和水玻璃硅酸钠(AlSS)组成的金属无机复合抑制剂对白钨矿与方解石浮选分离的影响.Zeta电位和吸附量测定结果表明,由Al(OH)4和SiOm(OH)n4-2m-n组成的负电荷胶体颗粒倾向于吸附在方解石表面,抑制油酸钠(NaOL)的吸附,而负电荷胶体颗粒在白钨矿表面的吸附量较低,导致NaOL在白钨矿表面的吸附量较大.接触角测量结果表明,白钨矿在NaOL+AlSS溶液中的疏水性明显优于方解石.XPS测试结果表明,Al和Si在方解石表面有吸附,而在白钨矿表面没有吸附.与只添加水玻璃(硅酸钠,SS)相比,AlSS对方解石的抑制作用明显增强,对白钨矿浮选几乎没有影响.在白钨矿与方解石混合矿中添加AlSS,可获得WO3品位为68.34％、WO3回收率为83.14％的白钨矿精矿.
Enhanced separation of scheelite and calcite by metal-inorganic complex depressant
The effect of metal-inorganic complex depressant composed of aluminum sulfate and sodium silicate(AlSS)on the flotation separation of scheelite and calcite was studied.Zeta potential and adsorption measurements confirmed that the negatively charged colloidal particles composed of Al(OH)4-and SiOm(OH)n4-2m-n tended to be adsorbed on calcite surface,inhibiting the adsorption of sodium oleate(NaOL),while the adsorption of negatively charged colloidal particles on scheelite surface was relatively low,which resulted in the great adsorption capacity of NaOL on scheelite.The contact angle measurements showed that the hydrophobicity of scheelite was significantly better than that of calcite in the NaOL+AlSS solution.XPS measurement results indicated the adsorption of Al and Si on the calcite surface rather than on the scheelite surface.Compared to adding water glass(sodium silicate,SS)only,the depression effect on calcite was significantly enhanced by the combination of AlSS,while scheelite flotation was hardly affected.Scheelite concentrate with WO3 grade of 68.34％and WO3 recovery of 83.14％could be obtained from mixed scheelite and calcite ores by adding AlSS.

scheelitecalciteseparation enhancementsodium oleatemetal-inorganic complex depressant

赵冠飞、冯博、朱冬梅、邱仙辉、高志勇、严华山、赖瑞森、邱廷省

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江西理工大学江西省矿业工程重点实验室,赣州 341000

江西理工大学资源与环境工程学院,赣州 341000

中南大学资源加工与生物工程学院,长沙 410083

白钨矿 方解石 分离强化 油酸钠 金属无机复合抑制剂

National Key Research and Development Program of ChinaKey Program for International S&T Cooperation Projects of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaScience and Technology Research Project of Education Department of Jiangxi Province,China

2018YFC19034002021YFE01068005216402052174248GJJ190442

2024

10.1016/S1003-6326(23)66424-6

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(2)