Introduction. In present-day conditions due to gold ore technogenic dump piling, the development of new effective technologies of small-sized and fine-dispersed gold extraction is becoming more relevant. The authors consider and analyze the situation of gold-bearing rock extraction and processing in Russia and in the Urals. Research aims to increase gold extraction out of technogenic dump and the developed gold-bearing placers with the help of the proposed technology. Research methodology. In the course of work the following analyses have been used: situation analysis, survey, analysis and systematization of research data, synthesis and comparative analysis, the analysis of the existing gold extraction process chains. Results. The conducted analysis has made it possible to make a conclusion that under the use of the modern processing technology the significant part of small-sized and fine-dispersed gold remains in the dumps. The authors of the article offer a new technology which allows to extract microscopic and fine gold with a greater effectiveness. The present research presents and describes the scratch brushing disperser with a multipurpose drive and the possibility to use a pseudo boiling layer, which is used for preliminary disintegration. Summary. The proposed technology can be effective if used to process technogenic dumps with difficult gold.

Key words: preliminary disintegration; scratch brushing disperser; small-sized and fine-dispersed gold.

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