Technological complex for processing vermiculite concentrates and conglomerates

Anatoly I. Nizhegorodov, Alexey N. Gavrilin, Boris B. Moyzes, Kirill A. Kuvshinov

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Relevance. Vermiculite and vermiculite-based materials have found wide application in many spheres of life: industry, environmental management, fire safety, etc. That's why, the solution of problems related to the improvement of technological processes for heat treating of vermiculite concentrates and conglomerates, especially in the aspect of obtaining high-quality expanded vermiculite, is relevant. The electric modular-trigger furnaces are the foundation for assurance of the resource efficiency of technological processes for expanded vermiculite production. Therefore, the consideration of issues of developing new electric modular-trigger furnaces designs and technological complexes based on them are relevant. The aim of the research is to develop the technological complex for vermiculite processing, study of specified technological processes and evaluation of their effectiveness. The research methods are based on the analysis of information sources in the field of research, the synthesis of constructive and technological solutions, parametric and functional description, experimental studies. Results. The authors have developed a technological complex for processing vermiculite concentrates and conglomerates, taking into account the requirements of energy saving, improving the quality of expanded vermiculite and secondary target products. The modular-trigger furnace was improved. The furnace allows saving up to 15 % of electric power at the same capacity. It was proved that the proposed cooling system provides an increase of the strength of the expanded grains by 19,1 %, an increase to almost 90 % of the release of secondary target products. The main quality indicator - decrease in the poured density of the main target product due to removal of secondary products and inert material - is significantly increased. The authors forecast further works in the aspect of developing a new electric furnace with a movable bottom platform, which has a specific energy capacity for vermiculite heat treating of about 81,6 mJ-m3

Original languageEnglish
Pages (from-to)74-86
Number of pages13
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Issue number11
Publication statusPublished - 2018


  • Cooling system
  • Electric modular-trigger furnace
  • Exergy
  • Inert material
  • Non-electric «zero» module
  • Secondary target products
  • Separation system
  • Technological complex
  • Thermal conductivity
  • Vermiculite strength

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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