自然环境条件下硫化铁的自燃倾向性  

Spontaneous combustion tendency of iron sulfide in natural environment

作　　者：赵雪娥[1] 蒋军成[2] 

机构地区：[1]郑州大学化学工程学院,河南郑州450001 [2]南京工业大学安全工程研究所,江苏南京210009

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第3期475-477,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金重点资助项目(29936110)

摘　　要：为了研究硫化铁的自燃倾向性,在自然环境条件下对硫化铁进行氧化实验,实验结果表明:Fe3O4、Fe2O3以及Fe(OH)3硫化后生成的硫铁化合物活性很高,具有较高的自然氧化活性,在室温下可迅速与空气中的氧气反应,同时放出大量的热量。以Fe2O3的硫化产物为典型样品,研究了硫化时间、水分、油品、硫及通风条件对硫化铁氧化升温特征的影响,结果表明,硫化时间长,适量的油品和硫以及良好的通风条件能够加速硫化铁升温过程,而一定的水分及不良的通风条件则降低了硫化铁的自燃倾向性。Oxidation experiment was made on iron sulfide in natural environment to explore its spontaneous combustion tendency. The results show that iron sulfide has greater activity and natural oxidation tendency, which could react with oxygen in open system at room temperature and then lots of heat is released. Effect of sulfurization time, water content, oil as well as sulfur on spontaneous combustion of iron sulfide is investigated on the same sulfide formed from Fe2O3. It indicates that long sulfurization time, some oil, sulfur as well as good ventilation condition could accelerate oxidation and temperatures rise, but uncertain water content and poor ventilation condition lessen the spontaneous combustion tendency.

关 键 词：硫化铁 自然氧化 自燃 

分 类 号：O613.51[理学—无机化学]