Abstract: Spontaneous combustion is one of the serious problems in the mining of sulfide ore deposits, and temperature is an important parameter in judging the spontaneous combustion degree of sulfide ore dump.The paper presents some basic theoretical knowledge about infrared radiation and infrared detecting instrument, analyzes the variation regularity of measure error in different measure distances and angles of infrared thermometer, establishes the quantitative relationship between the values from infrared thermometer and the real temperature of ore dump and summarizes the method for selecting an infrared instrument suitable for detecting spontaneous combustion of sulfide ore dumps.RAYTEK infrared thermometer and IRISYS thermal imager and a sulfide iron ore dump were used to detect a sulfide iron mine and achieved good results.

Key words: Sulfide ore dump, Spontaneous combustion, Infrared detecting technology, Fire prediction