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摘要:
为了研究组合高分子抑制剂对霓石和镜铁矿可浮性的影响，通过单矿物浮选试验，探讨了油酸钠体系中，聚乙二醇400、淀粉以及两者不同比例混合对霓石和镜铁矿的抑制效果，同时通过Zeta电位测定分析这两种抑制剂对霓石和镜铁矿的抑制机理。试验结果表明：淀粉对霓石和镜铁矿的抑制作用比聚乙二醇400强而选择性弱；组合抑制剂淀粉和聚乙二醇400的最佳质量浓度比为2：1，此时霓石和镜铁矿的回收率分别为74.80%和14.18%；淀粉对镜铁矿表面Zeta电位的影响大于霓石，聚乙二醇400对两矿石表面Zeta电位影响较小。
Abstract:In order to understand the effect of combined polymer depressant on the floatability of aegirite and specularite, the inhibition effects of PEG 400, starch and their mixtures in different proportions on aegirite and specularite in sodium oleate system were investigated by single mineral flotation experiments and zeta potential measurements. The results showed that the depression effect of starch on specularite was stronger while the selectivity was weaker than that on aegirite. The recoveries of aegirite and specularite could be up to 74.80% and 14.18%, when the concentration ratio of starch and PEG 400 was 2:1. The zeta potential change of specularite was significant than that of aegirite when starch was added, and PEG 400 showed little effect on the zeta potentials of these two minerals.
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Key words:
- aegirite /
- specularite /
- combined depressant /
- zeta potential /
- starch
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