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国外对无机酸酯、有机酸酯、离子型化 合物和非离子型化合物的捕收和抑制性能进 行了研究。本文主要根据近年来发表的几篇 国外专利报导,对国外此方面的研究作一简 要介绍。 (一)聚乙二醇单酯 系脂肪酸与聚乙二醇的反应产物,通式 如下: R—CO—O(CH_2CH_2O)_(n-1)CH_2CH_2OH 式中:R为C_(15)～C_(20)的烃链,n=2～3。 在泥质风化磷灰石—霞石矿的浮选中, 用聚乙二醇酯作解絮凝剂,可消除部分矿泥 的团聚作用。苏联磷灰石生产联合公司第 一、二选矿厂所作的工业试验表明,在解絮 凝剂31.2克/吨,粗妥尔油150克/吨的用量 条件下进行浮选时,所得磷精矿P_2O_5回收 率达96.8％,比不用解絮凝剂提高2.2％, 且泡沫矿化程度高,其含固量达45～55％。
Absorption and inhibition properties of inorganic acid esters, organic acid esters, ionic compounds and non-ionic compounds abroad were studied. This article mainly based on several foreign patent reports published in recent years, a brief introduction of foreign research in this area. (1) The reaction product of polyethylene glycol monoester-based fatty acid and polyethylene glycol, the general formula is as follows: where R is C 15 ~ C_ (20) hydrocarbon chain, n = 2-3. In the muddy weathering apatite - nepheline flotation, the use of polyethylene glycol as a deflocculant, can eliminate part of the agglomeration of the mud. The industrial tests conducted by the first and second concentrators of the United Apatite Production Company of the Soviet Union showed that when the flotation was carried out under the conditions of 31.2 g / t of deflocculant and 150 g / t of crude tall oil, the obtained phosphorus concentrate P 2 O 5 The recovery rate is 96.8%, which is 2.2% higher than that without the deflocculant, and the foam mineralization degree is high. The solid content reaches 45-55%.