The pre-bio-oxidation and its effect on the leaching process of low-grade copper ore in percolation columns
Kenzhaliyev B. Koizhanova A. Abdykirova G. Magomedov D. Abdyldayev N. Bakrayeva A. Mukhanova A.
2025SciCell s.r.o.
Acta Metallurgica Slovaca
2025#31Issue 2129 - 133 pp.
The results of laboratory studies aimed at extracting copper from substandard copper raw materials using percolators are presented in this work. The results of chemical elemental analysis, X-ray phase analysis and chemical phase analysis for the copper and iron forms in the ore are also presented herein. The efficiency of sulfuric acid and bacterial leaching in percolation columns was compared. When standard sulfuric acid leaching was used, copper extraction into the solution was 49.85%. In contrast, bacterial oxidation (using chemolithotrophic bacteria, Thiobacillus thiooxidans, which oxidise sulfur and iron compounds) achieved 74.81% copper extraction during a 60-day experiment. The redox potential values for standard sulfuric acid and bacterial leaching of copper ore are presented, which correlate with copper yield. As a result of the research, it was found that the use of bacterial technology provides deeper processing of copper ore due to the oxidation of copper sulfide minerals.
bacterial culture , leaching , low-grade copper ore , Thiobacillus thiooxidans
Text of the article Перейти на текст статьи
JSC Institute of Metallurgy and Ore Beneficiation, Satbayev University, Shevchenko 29/33, Almaty, 050010, Kazakhstan
JSC Institute of Metallurgy and Ore Beneficiation
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026