磷矿预处理对磷矿石熔态还原反应的影响  

Effect of pretreatment on phosphate smelting reduction reaction

作　　者：杨仟 杨世鑫 马超[1] 韩谢 吴元欣[1] 

机构地区：[1]绿色化工过程教育部重点实验室,武汉工程大学化工与制药学院,湖北武汉430073

出　　处：《化工矿物与加工》2016年第12期3-5,共3页Industrial Minerals & Processing

基　　金：“十二五”国家科技支撑计划项目“低品位难处理磷矿高效绿色开发及综合利用技术研究与示范”(2013BAB07B01)

摘　　要：本文研究了在渣碱度为2.4时,不同预处理温度、时间对磷矿熔态还原反应的影响,结果表明在预处理温度为800℃、时间为20min、熔态还原温度为1300℃,反应时间为1h时的还原率为94%。对预处理后的磷矿进行了热重分析,从磷矿还原反应机理出发说明预处理过程有利于加快磷矿石的还原反应,使磷矿石在熔态环境能够快速分散,增加反应物的活性,进而提高磷矿在还原反应过程中的还原率。Study is conducted of effects of the basicity of slag being 2.4, different pre-treatment temperature and different pre- processing time on the phosphate smelting reduction reaction. Tests show that with the pre-processing temperature of 800 ℃, time 20 min, smelting reduction temperature 1300℃, and reac- tion time 1 hour, reduction rate is 94%. The thermal gravimetric analysis of the pretreated phosphate rock illustrates from the phosphate reduction reaction mechanism that the pretreatment process is conducive to the improvement of phosphate reduction reaction, making phosphate rock spread fast in the molten envi- ronment and enhancing the activity of reactants so as to improve the reduction rate of reduction reaction of phosphate rock.

关 键 词：磷矿石 预处理 熔态还原 热重分析 

分 类 号：TQ126.3[化学工程—无机化工]