遵义某钼镍矿矿渣自燃机理及防治方法探讨  

Discussion on Autoignition Mechanism and Prevention Method of Slag Spontaneous Combustion of A Molybdenum Nickel Ore in Zunyi

作　　者：唐广 江攀和 陈磊 张明思 杨再良 梁劲松[1] 闫文清[1] TANG Guang;JIANG Pan-he;CHEN Lei;ZHANG Ming-si;YANG Zai-liang;LIANG Jin-song;YAN Wen-qing(No.102 Geological Party,Guizhou Bureau of Geology and Mineral Exploration and Development,Zunyi 563000,Guizhou,China)

机构地区：[1]贵州省地矿局102地质大队,贵州遵义563000

出　　处：《贵州地质》2024年第2期178-184,共7页Guizhou Geology

基　　金：由贵州省地矿局地质科研项目(黔地矿科[2022]20号);遵义市地质环境治理恢复工程项目(GZBS-2022-03)联合资助

摘　　要：为对自燃钼镍矿矿渣开展综合治理,通过遵义某钼镍金属矿矿渣现场调查及样品采集分析,查明了钼镍矿矿渣的矿物成分、元素含量及主要自燃气体成分,初步确定钼镍矿矿渣自燃的引燃物为黄铁矿,提供可持续燃烧的可燃物主要为炭质,当矿渣自身属性满足要求,供氧及聚热条件达到某一平衡时,便会发生自燃;提出了“降温+切断供氧通道”,“注浆+覆盖”综合治理措施以及尚未自燃矿渣的预防建议。工程验证治理取得了良好的效果,研究成果为同类型工程问题提供了一定的解决经验和思路。In order to carry out comprehensive treatment of molybdenum nickel ore slag spontaneous combustion,the mineral composition,element content,and main self igniting gas composition of molybdenum nickel ore slag were identified through on-site investigation and sample collection analysis.It was preliminarily determined that the igniting material for self igniting molybdenum nickel ore slag was pyrite,and the combustible material that provided sustainable combustion was mainly carbon.When the slag’s own properties met the requirements,and the oxygen and heat supply conditions reached a certain balance,Spontaneous combustion will occur;Proposed comprehensive treatment measures such as“cooling+cutting off oxygen supply channels”,“grouting+covering”,and prevention suggestions for slag that has not yet self ignited.The engineering verification governance has achieved good results,and the research results provide certain solutions and ideas for similar engineering problems.

关 键 词：钼镍矿矿渣 自燃机理 黄铁矿 防治方法 预防措施 

分 类 号：TD751[矿业工程—矿井通风与安全] P618.65[天文地球—矿床学] P618.53[天文地球—地质学]