СОВЕРШЕНСТВОВАНИЕ ТЕХНОЛОГИИ ПЕРЕРАБОТКИ СУНГУЛИТ?ВЕРМИКУЛИТОВЫХ КОНГЛОМЕРАТОВ

Translated title of the contribution: Improving the technology for processing sungulite-vermiculite conglomerates

Anatoly I. Nizhegorodov, Alexey N. Gavrilin, Boris B. Moyzes

Research output: Contribution to journalArticle

Abstract

Relevance. The improved energy and resource-saving technology, implemented in new technological complexes with preliminary «cold» re-preparation, allows returning valuable raw material resources to industrial circulation and obtaining vermiculite and sugulite concen- trates from mining waste accumulated in the Kovdor flogopit-vermiculite deposit. Therefore, this work is devoted to the issues of im- proving the processing of sungulite-vermiculite conglomerates. The aim of the research is to analyze the possibility of improving the technology for producing thermally activated sungulite and expan- ded vermiculite from mining wastes of the Kovdor phlogopite-vermiculite deposit and increasing its energy efficiency. The object of the research is the technological equipment for processing sungulite-vermiculite conglomerates, which implements ener- gy- and resource-saving technology for producing activated sungulite and vermiculite concentrate. The methods are based on the experimental data and analysis of aerodynamic separation of vermiculite and sungulite from olivine-py- roxene rock and increase of allotment of sungulite in sungulite concentrate. The results prove the aim of the research is achieved. On their basis, it is possible to develop the improved technology for vermiculite producing, including expanded and magnesia&silicate reagent (thermoactivated sungulite) from mining industrial wastes with energy sa- vings of up to 182 kJ/kg, which reduces energy consumption of their processing by 28 % compared to the previous technology. Besides, additional technological operations make it possible to obtain 350 kg of raw vermiculite, 68 kg of pure magnesia-silicate reagent with grain sizes of 2,4...3.5 mm and 158 kg of sungulite concentrate in a thermo-activated form with grains of 1,3...2,4 mm at almost 86 per- cent concentration. In general, we can conclude that the continuation of work in the field of development and improvement of techno- logies for processing sungulite-vermiculite conglomerates is promising.

Translated title of the contributionImproving the technology for processing sungulite-vermiculite conglomerates
Original languageRussian
Pages (from-to)98-109
Number of pages12
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Volume330
Issue number4
DOIs
Publication statusPublished - 1 Jan 2019

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal
  • Economic Geology
  • Management, Monitoring, Policy and Law

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