Effect of acidified water glass on the flotation separation of scheelite from calcite using mixed cationic/anionic collectors

被引：78
|
作者：
Dong, Liuyang [1 ]
Jiao, Fen [1 ]
Qin, Wenqing [1 ]
Zhu, Hailing [1 ]
Jia, Wenhao [1 ]
机构：
[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2018年 / 444卷
基金：
中国国家自然科学基金;
关键词：
Scheelite; Calcite; Flotation; Acidified water glass; Dodecylamine; Sodium oleate; SALT-TYPE MINERALS; SELECTIVE FLOTATION; SODIUM OLEATE; SURFACE-CHEMISTRY; REAGENT SCHEME; ADSORPTION; SILICATE; IONS; DEPRESSANT; MECHANISM;
D O I：
10.1016/j.apsusc.2018.03.097
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, the effect of acidified water glass (AWG) on the flotation separation of scheelite from calcite using mixed collector of dodecylamine (DDA) and sodium oleate (NaOL) was investigated. The flotation results show that AWG could selectively depress the flotation of calcite at pH 7. A series of mechanism experiments confirm that the chemisorption of AWG on calcite surface is more intense than scheelite. Although the chemisorption of NaOL on calcite surface is almost unaffected by the presence of AWG, the chemisorption of AWG hinders the adsorption of DDA on calcite surface. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：747 / 756
页数：10
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