Abstract In this paper, Na-CMC was studied as a depressant for almandine during flotation separation of rutile using cationic surfactant, octadecyl amine polyoxyethylene ether (AC1815) as a collector. Results of micro-flotation studies suggested that Na-CMC was considered as a selective depressant for almandine. Zeta potential and X-ray Photoelectron Spectroscopy (XPS) were used to elucidate the interaction mechanism between the minerals (rutile and almandine) and Na-CMC. The XPS analysis results show that there was both the chemical and hydrogen bonding in the interaction between almandine and Na-CMC. Zeta potential measurements indicate that, the adsorption of carboxylic groups on the almandine ferrous active sites, takes place with chemisorption which in turn depressed the almandine floatability. Contact angles results on the other hand shows that the floatability of almandine was adversely affected after being treated with Na-CMC, while the same depressant did not have any pronounced negative effect on the floatability of rutile.

中文翻译：

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使用羧甲基纤维素钠 (Na-CMC) 作为抑制剂从铝镁合金中选择性浮选金红石

摘要 本文以阳离子表面活性剂十八烷基胺聚氧乙烯醚（AC1815）为捕收剂，研究了Na-CMC作为金红石浮选分离过程中铝镁石的抑制剂。微浮选研究的结果表明，Na-CMC 被认为是铝镁合金的选择性抑制剂。Zeta 电位和 X 射线光电子能谱 (XPS) 被用来阐明矿物（金红石和铝镁石）与 Na-CMC 之间的相互作用机制。XPS分析结果表明，铁铝榴石与Na-CMC相互作用中存在化学键和氢键。Zeta 电位测量表明，羧基在铝铁活性位点上的吸附与化学吸附一起发生，这反过来又会降低铝铁矿的可漂浮性。