Electrochemical depression of galena aiming at selective sulfide flotation

Journal of the Brazilian Chemical Society

Dutra, Achilles Junqueira Bourdot¹  Centro de Tecnologia Mineral¹  Espínola, Aida¹  COPPE/UFRJ-PEMM, Rio de Janeiro, Brazil¹  Sampaio, João Alves¹ 

关键词: galena electrochemistry;    contact angle;    depression;    sphalerite;   

DOI  :  10.1590/S0103-50531997000200019

学科分类：化学（综合）

来源: SciELO

【 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.

【 授权许可】

Unknown