Scientists at Kazmekhanobr have invented a technology for extracting gold from poor and complex ores

In response to the depletion of rich deposits, specialists at Kazmekhanobr have proposed a new gold extraction technology that has been internationally recognized, but have not yet moved on to industrial testing, Bizmedia.kz reports.

Specialists at Kazmekhanobr, a branch of the National Center for Integrated Processing of the Ministry of Raw Materials of the Republic of Kazakhstan, have proposed a new technology that could improve gold extraction efficiency and reduce processing costs. The development has passed laboratory testing, according to the Ministry of Industry and Construction of Kazakhstan.

Two approaches have been proposed:

• For oxidized ores, a technology has been developed for pre-treatment with hydrogen peroxide and the addition of sodium acetate before heap leaching, which increases gold recovery to 10-14%.
• For sulfide ores, an approach involving the production of a high-grade gravity concentrate and its subsequent processing has been developed. The use of sodium acetate has further increased gold recovery to 4% and reduced its content in processing tailings. Sodium acetate is a promising partial alternative to expensive reagents.

The high scientific level of the discoveries is confirmed by international recognition:

• Two monographs and four articles have been published in international scientific journals ranked in the first and second quartiles.
• One PhD student is completing preparations for a dissertation defense on this topic.
• The developers plan to move on to the industrial testing stage of the technology.

Source: bizmedia.kz