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V. A. Arsentev
V. A. Arsentev
("Mekhanobr-tekhnika" Scientific and Production Corporation (CJSC)
("Mekhanobr-tekhnika" Scientific and Production Corporation (CJSC)

Articles

Geology
  • Date submitted
    2015-10-06
  • Date accepted
    2015-12-18
  • Date published
    2016-04-01

New technology of dry benefication of fly ash from coal power plants using applied mineralogy techniques

Article preview

The existence of environmental and strategic need to process dumps and slagheaps of coal mining enterprises of Russia and foreign countries results in reviewing the potential of using fly ash as a technogenic mineral resource. Comprehensive studies of substance composition of fly ash from coal power plants make it possible to define rational further ways of utilizing that mineral resource substantiating the scheme of its technological secondary processing. In view of the numerous environmental problems stemming from the techniques of wet benefication and processing of that mineral resource, a technology is suggested of dry cleaning of fly ash from thermal coal power plants. Studies were carried out using a number of samples of fly ash from various power plants. The suggested criteria are used to discriminate the compounds of fly ash and quantitative and qualitative composition of particulate matter is assessed. Studies of substance composition of fly ash samples has demonstrated that the concentration of non-combusted carbon in them varies from 5 to 20 %. The principal technological procedure of cleansing in our studies was a combination of magnetic and electric separation of ash in the state of vibrational pseudo-liquefaction. It enables one to increase the throughput capacity and selectivity of the cleansing process significantly. In the result of such cleansing a stable mineral fraction is produced that contains 0.5-2.5 % of carbon, so that the purified mineral fraction can be used as a construction binding agent. 

How to cite: Arsentev V.A., Kotova E.L. New technology of dry benefication of fly ash from coal power plants using applied mineralogy techniques // Journal of Mining Institute. 2016. Vol. 220. p. 521. DOI: 10.18454/PMI.2016.4.521
Innovation activity and advances for higher efficiency of production ad plants оf mining-metallurgical complex
  • Date submitted
    2011-10-22
  • Date accepted
    2011-12-29
  • Date published
    2012-04-01

Innovate technologies in waste of extraction and nonmetallic raw materials processing

Article preview

The paper deals with the problems of crushed stone screening wastes recycling and commercial utilization of the products obtained. Application of pulsed vibration technique made it possible to minimize generation of screening wastes in crushed stone production and provided means for obtaining high-quality fillers for production of compact fine-grained concretes and cell concrete.

How to cite: Arsentev V.A., Marmandyan V.Z., Samukov A.D., Kabirov A.M. Innovate technologies in waste of extraction and nonmetallic raw materials processing // Journal of Mining Institute. 2012. Vol. 198. p. 219.