纯氧密闭干法焙烧硫化钼生产氧化钼工艺研究  

Study on the Process of Roasting Vulcanized Molybdenum to Produce Molybdenum Oxide with Pure Oxygen in the Obturation Dry Condition

作　　者：田刚[1] 都基峻[1] 张凡[1] 刘宇[1] 石应杰[1] 

机构地区：[1]中国环境科学研究院,北京100012

出　　处：《环境工程技术学报》2011年第2期157-161,共5页Journal of Environmental Engineering Technology

基　　金：中国环境科学研究院中央级公益性科研院所基本科研业务专项(2007KYYW33)

摘　　要：氧化钼是钢铁行业和化工行业的重要原料,常用的氧化钼生产工艺包括反射炉焙烧工艺、回转窑焙烧工艺、多膛炉焙烧工艺、流化床焙烧工艺,这些工艺所获得的产品品质较低,且在生产过程中会产生大量的较高浓度的SO2(2%左右),难于利用和处理,会导致严重的环境污染。为降低SO2造成的环境污染,提高反应产物品质,采用纯氧密闭干法焙烧工艺生产氧化钼是有效方法。在密闭反应釜内加热纯氧和硫化钼,底部加热温度为650℃,反应釜内气体压力小于0.4MPa,氧化反应时间在35～50min,气体最高温度达到255℃;反应产物中MoO3的含量达到93%,高于常用生产工艺产物中MoO3的浓度(80%～85%);生成尾气中SO2浓度大于50%,具有很高的利用价值。Molybdenum oxide is an important raw material for steel and chemical industry.The conventional molybdenum oxide producing processes include reverberatory furnace roasting technology,rotary kiln roasting technology,multiple hearth furnace roasting technology,fluidized-bed roasting technology.In these conventional processes,the product quality was low with high concentration of SO2（up to 2%）which was hard to be utilized and disposed,and could result in serious environmental pollution.An effective technology of roasting vulcanized molybdenum to produce molybdenum oxide with pure oxygen in the obturation dry condition was introduced,which could reduce the environmental pollution of SO2 and improve the quality of reaction product.Pure oxygen and molybdenum sulfide were roasted in the obturation dry reactor,with heating temperature less than 650 ℃ in the bottom part,the gas pressure in the reactor less than 0.4 MPa,the oxidizing reaction time between 35 and 50 minutes,and with the highest gas temperature 255 ℃.The results showed that the content of MoO3 in reaction product reached 93%,higher than that of the reaction product with the common productive technology（80%-85%）,and the concentration of SO2 in flue gas was above 50%（in weight）,thus having great practical value for utilization.The experiment proved that the new technology was feasible for MoO3 and SO2 recovery.

关 键 词：纯氧 密闭 干法 氧化钼 

分 类 号：X383[环境科学与工程—环境工程]