STUDY OF THE INFLUENCE OF DIFFERENT FACTORS ON THE EMISSION OF POISONOUS GASES DURING SELF-COMBUSTION OF SULPHIDE ORES
V. A. Portola1, L. A. Krupnik2, Yu. N. Shaposhnik3, S. N. Shaposhnik4
1Gorbachev Kuzbass State Technical University, Kemerovo, Russia
2Kazakhstan National Research Technical University, Almaty, Kazakhstan
3Chinakal Institute of Mining, Siberian branch, Russian Academy of Sciences, Novosibirsk, Russia
4East Kazakhstan State Technical University, Ust Kamenogorsk, Kazakhstan
Keywords: Sulphide ores, poisonous gases, mine atmosphere, blind drift
Abstract
The results of studies on the emission of toxic gases, such as carbon dioxide, carbon monoxide, nitrogen oxides, sulfur dioxide, hydrogen sulphide and carbon in blind drifts of mines with pyrite-polymetallic ores are presented. Studies to determine the composition of air under conditions of heated sulphide ores, hydration of binders and rotting and/or pyrolyzed wooden elements of tightening and backfilling of framed metal support were carried out in mine conditions and in an accredited testing laboratory. In laboratory conditions, the concentration and intensity of the emission of poisonous gases and oxygen absorption from sulphide ores, wood and backfill were determined under conditions of mine regulated temperatures and during heating. The calculation results of toxic gas emission in a blind unventilated drift at natural ambient temperature are presented.
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