Electrochemical depression of galena aiming at selective sulfide flotation

被引：7
|
作者：
Dutra, AJB [1 ]
Espinola, A [1 ]
Sampaio, JA [1 ]
机构：
[1] UNIV FED RIO DE JANEIRO,COPPE,PEMM,BR-21945970 RIO JANEIRO,RJ,BRAZIL
来源：
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 1997年 / 8卷 / 02期
关键词：
galena electrochemistry; contact angle; depression; sphalerite;
D O I：
10.1590/S0103-50531997000200019
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In this article, the potential at which galena depression occurs is related to, the formation of hydrophilic compounds on its surface. Reactions are proposed based on analyses by cyclic voltammetry, thermodynamic data, and X-ray photoelectron spectroscopy (XPS). Electrochemical variables, such as the redox potential, present good perspectives for selectivity in the flotation of galena and sphalerite, because in a given range of potentials, the galena surface becomes hydrophilic, as shown by measurements of the contact angle and floatability tests.
引用
收藏
页码：193 / 196
页数：4
相关论文
共 50 条
  • [21] Research progress on electrochemical characteristics of galena in flotation and grinding processes
    Ma, Huitai
    Wang, Fei
    Chen, Mingzhe
    Huang, Ming
    INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 2024, 19 (09):
  • [22] EFFECT OF OXIDIZING CONDITIONS ON SELECTIVE FLOTATION OF GALENA + SPHALERITE BY XANTHATES
    RAO, SR
    PATEL, CC
    INDIAN JOURNAL OF TECHNOLOGY, 1964, 2 (01): : 18 - &
  • [23] The selective flotation of chalcopyrite against galena using alginate as a depressant
    Chen, Wei
    Chen, Tong
    Bu, Xianzhong
    Chen, Fanfan
    Ding, Yihao
    Zhang, Chonghui
    Deng, Sha
    Song, Yonghui
    MINERALS ENGINEERING, 2019, 141
  • [24] INVESTIGATION OF THE ELECTROCHEMICAL PROCESSES IN SULFIDE FLOTATION
    HEIMALA, S
    ACTA POLYTECHNICA SCANDINAVICA-CHEMICAL TECHNOLOGY SERIES, 1985, (162): : 1 - 63
  • [25] Electrochemical characteristics and collectorless flotation behavior of galena: With and without the presence of pyrite
    Qin, Wenqing
    Wang, Xingjie
    Ma, Liyuan
    Jiao, Fen
    Liu, Ruizeng
    Yang, Congren
    Gao, Ke
    MINERALS ENGINEERING, 2015, 74 : 99 - 104
  • [26] Electrochemical properties on surface of galena in grinding system and its influence on flotation
    School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China
    Zhongnan Daxue Xuebao (Ziran Kexue Ban), 2008, 1 (54-58):
  • [27] Effect of guar gum on selective separation of sphalerite from galena by flotation
    Rath, RK
    Subramanian, S
    TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY, 1999, 108 : C1 - C7
  • [28] Fundamental electrochemical studies of sulfide mineral flotation
    Tolley, W
    Kotlyar, D
    VanWagoner, R
    MINERALS ENGINEERING, 1996, 9 (06) : 603 - 637
  • [29] Selective depression of galena in the galena and chalcopyrite system by the Fe(II)-activated persulfate process
    Cao, Qinbo
    Yan, Yan
    Zou, Heng
    Zhang, Haiyu
    Liu, Dianwen
    Wen, Shuming
    Li, Yanjun
    MINERALS ENGINEERING, 2024, 217
  • [30] ELECTROCHEMICAL STUDIES OF SULFIDES, .1. ELECTROCATALYTIC ACTIVITY OF GALENA, PYRITE AND COBALT SULFIDE FOR OXYGEN REDUCTION IN RELATION TO XANTHATE ADSORPTION AND FLOTATION
    AHMED, SM
    INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1978, 5 (02) : 163 - 174
12345