ISSN (print) 1995-2732
ISSN (online) 2412-9003


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Problem Statement (Relevance): This paper describes the main scientific and practical results of the study into increasing the efficiency of gold-bearing rock grinding process by using surfactants during ore concentration stage. The authors looked at the action mechanism of the surfactants and at how to apply ultrasound to intensify the surfactant action on the mineral structure. The authors also developed an approach to selecting surfactants. Objectives: The objective of this research is to examine and implement the application of surfactants at the gold ore grinding stage to help enhance the entire process. Methods Applied: The authors did a review of the literature (including patent information), carried out laboratory tests to determine the contact angle, and analysed the grinding processes using a laboratory rod mill. Originality: The authors propose a technique for selecting surfactants through measuring the contact angle on the mineral surface. The authors developed a technique to help intensify the grinding process, which, in contrast to similar techniques, reuses the solution thus saving it and uses acoustic pulses (i.e. ultrasound), instead of electrical pulses, to create an additional destructive impact. Findings: The smallest contact angles on the surface of pyrite and ore from the Makmal deposit were observed when the solutions applied contained the following: KISK-1, -2, Antiprex D and SLS (sodium lauryl sulfate). By the size yield after grinding, the most effective surfactants included: KISK-1, - 3, -8, Antiprex D and SLS. Practical Relevance: Conclusions were formulated regarding the effectiveness of the described technique and the relevance of further research in this area. Reagents were identified through experiments that can help intensify the gold ore grinding process. A relevant technique was developed, and the following patent – registered: "A grinding technique for mineral raw materials" (RU 2641527).


Gold, ore, surfactants, grinding, ultrasound

Pavel A. Zamotin – Postgraduate Student,

Ural Federal University, Yekaterinburg, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Vladimir G. Lobanov – PhD (Eng.), Professor

Ural Federal University, Yekaterinburg, Russia.

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