A kerosene/aqueous emulsion used as a collector in potash ore desliming flotation

被引：13

作者：

Li, Da ^{[1
]}

Duan, Pingmei ^{[1
]}

Du, Zhiping ^{[1
]}

Cheng, Fangqin ^{[1
]}

Guan, Yunshan ^{[2
]}

机构：

[1] Shanxi Univ, Inst Resources & Environm Engn, State Environm Protect Key Lab Efficient Utilizat, Taiyuan 030006, Peoples R China

[2] Qinghai Univ, Sch Chem & Chem Engn, Xining 810016, Qinghai, Peoples R China

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2015年 / 209卷

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

Emulsion stability; Nonionic surfactant; Kerosene; KCl saturated solution; SURFACE; EMULSIFICATION; ELECTROLYTES; STABILITY; BEHAVIOR;

D O I：

10.1016/j.molliq.2015.05.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The removal of slimes (water-insoluble minerals) from high slime-containing potash ores from Qinghai Province, PRC, was investigated using flotation. A higher slime flotation recovery was obtained when a surfactant (polyoxyethylene fatty acid ester)-kerosene water emulsion was used as the collector. The stabilities of the kerosene/aqueous emulsions in water and in KCl saturated solution were tested to understand the mechanism of the desliming flotation process. The results showed that the phase separation of the emulsion was pronounced at low surfactant concentration. Microscopic observation of the emulsion microstructure indicated that the droplets were spherical with the exception of samples with low surfactant concentration and that the droplet size increased with decreasing surfactant concentration. The emulsion droplets in the KCl saturated solution were smaller than those in pure water. Additionally, the emulsion was easier to stabilize in KCl because of the higher surface activity in KCl saturated solution; therefore, this emulsion can be used as a collector in desliming flotation. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：611 / 616

页数：6

共 21 条

[1]

Micellization and interfacial behavior of 16-E2-16 in presence of inorganic and organic salt counterions [J].