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    自然科學版 英文版

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    中南大學學報(英文版)

    Journal of Central South University

    Vol. 8    No. 3    September 2001

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    Investigation of chemical suppressants for inactivation of sulfide ores
    WUChao, LI Zi-jun, ZHOU Bo, WANG Ping-long, LIMao-nan

    College of Resources, Environment and Civil Engineering, Central SouthUniversity, Changsha 410083, China

    Abstract:In order to investigate the effective control method of spontaneous combustion in the mining of sulfide ore deposits. This paper presents the testing results of several selected chemicals (water glass, calcium chloride, calcium oxide, magnesium oxide and their composites) as oxidation suppressants for sulfide ores. A weight increment scaling method was used to measure suppressant performance, and this method proved to be accurate, simple and convenient. Based on a large number of experiments, the test results show that four types of chemical mixtures demonstrate a good performance in reducing the oxidation rate of seven active sulfide ore samples by up to 27% to 100% during an initial 76 d period. The mixtures of water glass mixed with calcium chloride and magnesiumoxide mixed with calcium chloride can also act as fire suppressants when used with fire sprinkling systems.

     

    Key words: sulfide ores; oxidation; chemical suppressants

    中南大學學報(自然科學版)
      ISSN 1672-7207
    CN 43-1426/N
    ZDXZAC
    中南大學學報(英文版)
      ISSN 2095-2899
    CN 43-1516/TB
    JCSTFT
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