The effect of graphene oxide on the slime coatings of serpentine in the flotation of pentlandite

被引：27
作者：
Cao, Jian
Tian, Xiao-Dong
Luo, Yong-Chun
Hu, Xiu-Qin
Xu, Peng-Fei [1 ,2 ]
机构：
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2017年 / 522卷
关键词：
Graphene oxide; Pentlandite; Serpentine; Flotation separation; Slime coating; SULFIDE ORE; ACID; SEPARATION; PERFORMANCE; ADSORPTION; LIZARDITE; CATALYST; NANOPARTICLES; FLOCCULATION; REDUCTION;
D O I：
10.1016/j.colsurfa.2017.03.043
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：
This paper studied the effects of graphene oxide (GO) on the slime coatings of serpentine in the flotation of pentlandite. The flotation results showed that the flotation recovery of pentlandite was improved with the addition of GO, compared with carboxymethyl cellulose (CMC). The possible mechanisms of the improved flotation recovery were investigated by electrokinetic study, FTIR study, sedimentation tests and scanning electronic microscopy (SEM) analysis. The experimental results demonstrated that both of the two depressants dispersed the hydrophilic serpentine particles from the pentlandite surface. For GO, however, the flocculation of serpentine was a further reason responsible for the enhanced recovery of pentlandite. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：621 / 627
页数：7
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