The flotation separation of scheelite from calcite using acidified sodium silicate as depressant

被引：221
|
作者：
Feng Bo [1 ,2 ]
Luo Xianping [1 ,2 ]
Wang Jinqing [1 ]
Wang Pengcheng [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Jiangxi Key Lab Min Engn, Ganzhou, Peoples R China
[2] Western Min Co LTD, Qinghai Key Lab Plateau Comprehens Utilizat & Min, Xining, Peoples R China
来源：
MINERALS ENGINEERING | 2015年 / 80卷
关键词：
Scheelite; Calcite; Sodium oleate; Acidified sodium silicate; SALT-TYPE MINERALS; OLEOYL SARCOSINE; ALKYL OXINE; ADSORPTION; MECHANISM; COLLECTOR; OLEATE; ORES;
D O I：
10.1016/j.mineng.2015.06.017
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The flotation separation of scheelite from calcite using sodium oleate as collector and acidified sodium silicate as depressant has been studied. The results show that sodium oleate has collecting ability to both scheelite and calcite and the flotation separation of scheelite from calcite cannot be realized if collector is used only. The depressant acidified sodium silicate has selective depression effect on calcite and the optimum ratio of sodium silicate to oxalic is 3:1. The use of acidified sodium silicate as depressant can achieve the flotation separation of scheelite from calcite. Infrared studies and zeta potential measurements showed that the pre-adsorption of acidified sodium silicate interferes with the adsorption of sodium oleate on calcite surface while does not interfere with its adsorption on scheelite surface. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：45 / 49
页数：5
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