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M. A. Chukaeva
M. A. Chukaeva
National Mineral Resources University (Mining University)
National Mineral Resources University (Mining University)
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Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2021-09-02
  • Date accepted
    2022-01-25
  • Date published
    2022-04-29

Complex processing of high-carbon ash and slag waste

The paper considers a current issue of ash and slag processing for the Polyus Aldan JSC, that has accumulated over 1 million tons of this waste. Following the results of the review of Russian and foreign literature, four promising areas of their use were selected: road construction, building materials, reclamation of disturbed lands, and inert aggregates. To assess the possibility of implementing the selected disposal directions, the samples of ash and slag waste of the enterprise were sampled and analyzed. Fuel characteristics, chemical and mineral composition, as well as physico-chemical and mechanical properties of waste were determined. Taking into account the results of complex laboratory studies and the requirements of regulatory documents, each of the selected areas of using ash and slag waste was evaluated. It was found that their disposal by traditional methods has limitations, mainly related to the high content of unburned fuel residues. The high content of combustible substances and the high specific heat of combustion with a relatively low ash content suggested the possibility of thermal disposal of the studied waste. Based on the literature data, the characteristics of the preparation of organic coal-water suspensions based on the studied ash and slag waste were selected. As a result of a series of experiments on their flaring, the expediency of using the obtained fuel at the enterprise under consideration has been proved. The authors note the possibility of using ash obtained after thermal waste disposal in the road construction industry. The prospects for further research of technologies for the preparation and combustion modes of suspension fuel based on ash and slag waste are determined.

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Mariia A. Chukaeva, Vera A. Matveeva, Ivan P. Sverchkov (2022) Complex processing of high-carbon ash and slag waste. Journal of Mining Institute. Vol 253. p. 97-104. DOI: 10.31897/PMI.2022.5
Modern methods and systems for indication and monitoring of environmental components
  • Date submitted
    2016-11-03
  • Date published
    2013-04-01

Estimation of the condition of the soil-vegetative complexes having stress at atmospheric impact

The main research objective was monitoring and assessment of terricolous and plant cover condition in forest ecosystems influenced by industrial pollution by the Severonickel Industrial Plant, which impact zone covers 1.4 thousand sq. km. During an expedition to the Murmansk Region samples of upper soil layers and plants were taken in areas directly affected by atmospheric impact from OAO Severonickel both at various distances from the plant and in background territories. This will help to determine the overall degree of soil contamination at various distances from the plant as well as distribution of heavy metals accumulated in various soil layers and a complex estimation of adverse impact on soil cover and various plant species.

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D. S. Korel'skii, M. A. Chukaeva (2013) Estimation of the condition of the soil-vegetative complexes having stress at atmospheric impact. Journal of Mining Institute. Vol 203. p. 174.