摘要
Spontaneous combustion is one of the serious problems in the mining of sulfide ore deposits. The relevant factors, e.g. oxygen absorption quantity, mass increase, contents of water soluble iron ions and sulfate ion of sulfide ore samples in the oxidation process were investigated both in theory and experiment. The results from the investigation show that there is no general interpretation relation among the oxygen absorption quantity, the contents of sulfate ion and water soluble iron ions during the oxidation process of sulfide ores at ambient temperature. However, there is a linear relationship between the mass increase of the sulfide ore samples in the oxidation process at ambient temperature and the quantity of oxygen absorption. Therefore, the simple and cheap mass scaling method is suitable for predicting the oxygen absorption performance of sulfide ores at ambient temperature in place of the expensive and complicated chemical method used hitherto. Furthermore, combined with other items of breeding fire test, the mass increase potential can also be used to predict the spontaneous combustion tendency of sulfide ores.
Spontaneous combustion is one of the serious problems in the mining of sulfide ore deposits. The relevant factors, e.g. oxygen absorption quantity, mass increase, contents of water soluble iron ions and sulfate ion of sulfide ore samples in the oxidation process were investigated both in theory and experiment. The results from the investigation show that there is no general interpretation relation among the oxygen absorption quantity, the contents of sulfate ion and water soluble iron ions during the oxidation process of sulfide ores at ambient temperature. However, there is a linear relationship between the mass increase of the sulfide ore samples in the oxidation process at ambient temperature and the quantity of oxygen absorption. Therefore, the simple and cheap mass scaling method is suitable for predicting the oxygen absorption performance of sulfide ores at ambient temperature in place of the expensive and complicated chemical method used hitherto. Furthermore, combined with other items of breeding fire test, the mass increase potential can also be used to predict the spontaneous combustion tendency of sulfide ores.
出处
《中国有色金属学会会刊:英文版》
CSCD
2004年第1期175-179,共5页
Transactions of Nonferrous Metals Society of China
基金
Project( 95 116 0 1 0 3 0 3 )supportedbytheMinistryofScienceandTechnology
China
关键词
硫化矿石
氧化过程
环境温度
选矿
铁矿石
sulfide ore
oxidation absorption
oxidization products
spontaneous combustion
mass increase scaling method
combustion prediction