Open AccessBIOLEACHING OF COPPER FROM CARAIBA MINE ORE (BRAZIL)
Author(s) -
L. A. Bernardez,
Luiz Rogério Pinho de Andrade Lima,
Luis Eduardo L de Oliveira
Publication year - 2019
Publication title -
latin american applied research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 23
eISSN - 1851-8796
pISSN - 0327-0793
DOI - 10.52292/j.laar.2019.281
Subject(s) - bioleaching , tailings , copper , copper ore , sulfide , metallurgy , laboratory flask , copper mine , leaching (pedology) , copper extraction techniques , acid mine drainage , microorganism , chemistry , environmental science , geology , materials science , bacteria , paleontology , soil science , soil water
The bioleaching of copper ore from the Caraiba Mine was assessed. A microorganism, Acidiothiobacillus ferrooxidans, was isolated from samples collected directly in acid mining drainage in a gold mine tailings pound and used in the bioleaching of the copper sulfide ore. This ore is composed mainly of 28% of oxidized species, 43% of secondary sulfides and 24% of primary sulfide. The shaking flasks experiments with the Caraiba ore showed copper chemical leaching of about 37% and copper bioleaching of about 60% within 60 days at low temperature and native microorganism.