Mixed-type dry pretreatment technology for gold-bearing ore

An efficient method of ore pretreatment is X-ray radiometric separation which is particularly effective with particles +30 mm in size. Untreatable by X-ray radiometric separation, size 30 mm, depending on mass fraction of a valuable component, either goes to concentrate or to waste, which leads to either dilution of the concentrate or to loss of valuable component, respectively. Inclusion of XRRS-untreatable fins into processing is a relevant and economically beneficial approach. Pneumatic separation is used in processing of asbestos, mica and coal. This article discusses feasibility of mixed-type dry pretreatment of gold-bearing ore by X-ray radiometric separation and separation by upward flow velocities in a pneumatic separator. It is found to be possible to separate up to 50% of barren rock with dump-value content of gold at total gold loss less than 5%. Thus, such pre-treatment can greatly simplify gold-bearing ore processing technology.

Zavyalov S. S., Mamonov R. S. Mixed-type dry pretreatment technology for goldbearing ore. MIAB. Mining Inf. Anal. Bull. 2021;(11-1):338—345. [In Russ]. DOI: 10.25018/0236_1 493_2021_111_0_338.

The study was carried out under R&D State Contract with the Ural State Mining University, Contract No. 075-03-2021-303 as of 29 December 2020.

Zavyalov S. S.¹, Post-Graduate Student at the Mineral Processing Department, e-mail: doker_777@bk.ru;
Mamonov R. S.¹, Engineer, e-mail: mamonoff_npa@mail.ru;
¹ Ural State Mining University, Yekaterinburg, Russia.

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