Investigation of chemical suppressants for inactivation of sulfide ores

来源期刊：中南大学学报(英文版)2001年第3期

论文作者：WU Chao LI Zi-jun ZHOU Bo WANG Ping-long LI Mao-nan

文章页码：180 - 184

Key words：sulfide ores; oxidation; chemical suppressants

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.