以 NaOl 为捕集剂从方解石中分离萤石的新型抑制剂 PMAA 评估

Xiaofeng Zhang, Qi Li, Wenqing Qin, Cheng Liu, Siyuan Yang
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引用次数: 0

摘要

由于萤石和方解石表面具有相同的钙活化位点,因此要将它们分离开来具有挑战性。在浮选萤石的过程中,使用了马来酸和酰基酸的共聚物(PMAA)来抑制方解石。微浮选结果表明,在 pH 值为 7-10 的范围内,油酸钠(NaOl)具有良好的收集萤石和方解石的能力。人工矿物混合物图显示,在 PMAA/NaOl 存在下,萤石/方解石可有效分离。Zeta 电位结果表明,NaOl 捕集剂被 PMAA 调节的方解石表面吸收,但未被 PMAA 调节的萤石表面吸附。XPS 结果和化学计算显示,方解石表面与 PMAA 之间发生了化学作用,这是由于方解石表面的钙离子与 PMAA 的 -COOH 基团相互作用所致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of a novel depressant PMAA for the separation of fluorite from calcite using NaOl as a collector
It is challenging to separate fluorite from calcite due to their same calcium activated sites on their surfaces. The copolymer of maleic and acylic acid (PMAA) was used to inhibit the calcite in the flotation of fluorite. Micro-flotation results exhibited that sodium oleate (NaOl) had a good ability to collect fluorite and calcite in the scope of pH 7-10. The PMAA treatment prior to NaOl selectively depressed the floatability of calcite while allowed the flotation of fluorite, and the artificial minerals mixture plotted that fluorite/calcite could be effectively separated in the presence of PMAA/NaOl. Zeta potential results suggested that NaOl collector was absorbed on the PMAA-conditioned calcite surface but did not adsorb on the PMAA-conditioned fluorite surface. XPS results and calculational chemistry revealed the chemical interaction occurred between calcite surface and PMAA which was attributed to the calcium ions of calcite surface interacting with -COOH group of PMAA.
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