Spontaneous Oxidation and Combustion of Sulfide Ores in Underground Mines: A Literature Survey |
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accelerated acid amount applied backfill become blasting broken carbon cause caving changes chemical circulation complex composite concerning considerable containing cooling cooling effect critical decreasing depend determine dust effect equation example explosions extremely factors fide FIGURE fire flow formation galena ground hazards heat highly ignite important increase ions iron iron sulfides levels Lukaszewski material measures mechanism metal method moisture content Mount Isa muck natural noted occur oxidation and combustion oxidation of sulfides oxidation process oxide products oxygen availability particle physical piles points porosity potential present problems proportional provides pyrite pyrrhotite quantities quickly reaction reactive sulfides relative removed result samples serious showed solution spontaneous combustion spontaneous oxidation step stopes sulfate sulfide concentrates sulfide minerals sulfide oxidation sulfur dioxide surface surface area Table temperatures timber tion underground mines various ventilation volume