Abstract Spontaneous combustion of coal has become an important disaster that threatens the safety of coal mines. FeS2 is the main component of pyrite, which is suspected to be a major contributor to coal spontaneous combustion (CSC). So, it has important significance to FeS2 on the characteristics of coal oxidation for prevention and treatment. This study used coal samples mixed with different proportions of FeS2 (2.0 mass%, 4.0 mass%, and 6.0 mass% mass percentage) were tested to investigate the characteristics of spontaneous combustion, as compared with the fresh sample. The CO and CO2 production rates, critical temperature, and dry cracking temperature during oxidation were analyzed. The temperature-programmed experiments was conducted to simulate low-temperature oxidation processes realistically. In-situ infrared spectroscopy was used to appraise the evolution of low-temperature (

中文翻译：

---

FeS2对煤低温自燃过程的影响

摘要 煤炭自燃已成为威胁煤矿安全的重大灾害。FeS2 是黄铁矿的主要成分，黄铁矿被怀疑是煤自燃 (CSC) 的主要来源。因此，FeS2对煤氧化特性的防治具有重要意义。本研究使用混合不同比例 FeS2（2.0 质量％、4.0 质量％和 6.0 质量％质量百分比）的煤样进行测试，以研究与新鲜样品相比的自燃特性。分析了氧化过程中的 CO 和 CO2 产率、临界温度和干裂温度。进行程序升温实验以真实地模拟低温氧化过程。