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首页> 外文会议>XXI International Mineral Processing Congress >ENHANCING FLOTATION RECOVERY OF PHOSPHATE ORE BY NONIONIC SURFACTANT
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ENHANCING FLOTATION RECOVERY OF PHOSPHATE ORE BY NONIONIC SURFACTANT

机译：非离子表面活性剂增强磷酸盐矿的浮选回收

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To enhance the oleate flotation of phosphate minerals a nonyl phenol polyethylene glycol ether (Tergitol NP 4) was investigated as a promotor. The beneficial effect of the surfactant was tested by contact angle, micro-flotation and batch flotation experiments. The addition of surfactant did not show any significant change in contact angles in the presence of sodium oleate. The deleterious effect of different concentrations of calcium ions was observed both in contact angle and microflotation tests as they increased reagent consumption in the absence of nonionic surfactant. But, the addition of surfactant resulted in a significant increase in the recovery of pure apatite and calcite in micro-flotation experiments even in the presence of sodium metasilicate and calcium ions. Batch flotation experiments with phosphate ore showed that the presence of the surfactant increased P_2O_5 recovery by 10/15% with minimal effect on grade.
机译：为了增强磷酸盐矿物的油酸盐浮选，研究了壬基酚聚乙二醇醚（Tergitol NP 4）作为促进剂。通过接触角，微浮选和间歇浮选实验测试了表面活性剂的有益效果。在油酸钠存在下，表面活性剂的添加没有显示出接触角的任何显着变化。在接触角试验和微浮选试验中均观察到不同浓度钙离子的有害作用，因为它们在不存在非离子表面活性剂的情况下会增加试剂消耗。但是，即使在偏硅酸钠和钙离子存在的情况下，表面活性剂的添加也可以在微浮选实验中显着提高纯磷灰石和方解石的回收率。用磷酸盐矿石进行分批浮选实验表明，表面活性剂的存在使P_2O_5的回收率提高了10/15％，对品位的影响最小。

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