Selective flotation separation of spodumene from feldspar using new mixed anionic/cationic collectors

被引：102

作者：

Xu, Longhua ^{[1
,2
]}

Hu, Yuehua ^{[2
]}

Tian, Jia ^{[1
]}

Wu, Houqin ^{[1
]}

Yang, Yaohui ^{[3
]}

Zeng, Xiaobo ^{[3
]}

Wang, Zhen ^{[1
]}

Wang, Jinming ^{[1
]}

机构：

[1] Southwest Univ Sci & Technol, Minist Educ, Key Lab Solid Waste Treatment & Resource Recycle, Mianyang, Sichuan, Peoples R China

[2] Cent S Univ, Sch Resources Proc & Bioengn, Changsha, Hunan, Peoples R China

[3] Chinese Acad Geol Sci, Inst Multipurpose Utilizat Mineral Resource, Chengdu, Sichuan, Peoples R China

来源：

MINERALS ENGINEERING | 2016年 / 89卷

基金：

中国国家自然科学基金;

关键词：

Spodumene; Feldspar; Flotation; Mixed collectors; DTAC; SURFACTANT MIXTURES; CATIONIC/ANIONIC COLLECTORS; ADSORPTION; QUARTZ; SYNERGISM; MECHANISM; REAGENTS; ORES;

D O I：

10.1016/j.mineng.2016.01.013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The selectivity in flotation separation of spodumene from other pegmatic aluminosilicates such as feldspar and mica, using a single fatty acid anionic collector, is found to be very difficult. It is attributed to the same surface Al site for interaction with fatty acid. In this study, a collector mixture of sodium oleate (NaOL) and dodecyl trimethyl ammonium chloride (DTAC) demonstrates a high selectivity for the flotation of spodumene from feldspar. The influences of important factors such as molar ratio of the mixed collectors, dosages of calcium chloride, sodium hydroxide and sodium carbonate, and pulp temperature on spodumene and feldspar flotation using the mixed collectors have been investigated through micro-flotation tests. The optimum molar ratio of NaOL and DTAC is found to be 9:1. Sodium hydroxide has to be used as a pH regulator. Without the use of depressants, no selectivity is observed as the flotation of spodumene and feldspar are activated by Ca2+. Sodium carbonate must be used as depressant of feldspar. A comparison of the flotation for a lithium pegmatite ore using mixed fatty acid soaps and mixed anionic/cationic collectors (NaOL/DTAC) was carried out by the batch flotation tests. The results indicated that NaOL/DTAC decrease collector consumption by two-thirds. The recovery and grade of Li2O concentrates increase by 4.93% and 0.31%, respectively. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：84 / 92

页数：9

共 35 条

[1] Processing a spodumene ore to obtain lithium concentrates for addition to glass and ceramic bodies [J].

Amarante, MM ;

de Sousa, AB ;

Leite, MM .

MINERALS ENGINEERING, 1999, 12 (04) :433-436

[2]

Bradshaw DJ., 1997, THESIS U CAPE TOWN

[3]

CRITCHLEY JK, 1991, T I MIN METALL C, V100, pC55

[4]

deCastro FHB, 1996, INT J MINER PROCESS, V46, P35

[5]

Deng Tony., 2010, P CANADIAN MINERAL P, V16, P253

[6] Influence of important factors on flotation of zinc oxide mineral using cationic, anionic and mixed (cationic/anionic) collectors [J].

Ejtemaei, Majid ;

Irannajad, Mehdi ;

Gharabaghi, Mandi .

MINERALS ENGINEERING, 2011, 24 (13) :1402-1408

[7] THE ROLE OF ALKALINE-EARTH CATIONS IN FLOTATION SEPARATION OF QUARTZ FROM FELDSPAR [J].

ELSALMAWY, MS ;

NAKAHIRO, Y ;

WAKAMATSU, T .

MINERALS ENGINEERING, 1993, 6 (12) :1231-1243

[8]

Gruber P., 2010, GLOBAL LITHIUM AVAIL

[9]

Holland P.M., 1992, In mixed Surfactant Systems

[10] Global lithium resources: Relative importance of pegmatite, brine and other deposits [J].

Kesler, Stephen E. ;

Gruber, Paul W. ;

Medina, Pablo A. ;

Keoleian, Gregory A. ;

Everson, Mark P. ;

Wallington, Timothy J. .

ORE GEOLOGY REVIEWS, 2012, 48 :55-69

← 1 2 3 4 →