白云质磷矿石浮选尾矿消化试验研究  

Study on digestion of dolomitic phosphate rock flotation tailings

作　　者：邱跃琴[1,2] 刘向御[1,2] 

机构地区：[1]贵州大学矿业学院,贵州贵阳550003 [2]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550003

出　　处：《化工矿物与加工》2010年第12期16-18,共3页Industrial Minerals & Processing

基　　金：国家科技支撑计划项目课题(2007BAB08B07)

摘　　要：对某白云质磷矿石浮选尾矿进行了差热分析和烧失量试验,表明尾矿在756.2℃时开始分解,到820.8℃时分解完全,分解过程分为两个阶段,符合白云石两阶段分解过程。合理煅烧温度为850℃时,保温时间为1 h。用合理煅烧条件下所得煅粉进行了消化条件试验,结果显示,合理消化条件为消化温度70℃,消化时间40 min,液固比70∶1。The differential thermal analysis and LOI of dolomitic phosphate rock flotation tailings were tested. The results showed that the tailings began to decompose at 756.2℃ and ended at 820. 8℃ when the samples decomposed completely. And the decomposition process was divided into two stages, in line with a two-stage decomposition of dolomite. At the temperature of 850 ℃, holding time 1 h, the calcined activity of sample was best. The calcined powder obtained in these conditions were tested. The results showed that the optimum conditions were digestion temperature 70 ℃, digestion time of 40 min, liquid to ,solid ratio of 70：1.

关 键 词：磷矿 尾矿 煅烧 消化 活性 

分 类 号：TD926.4[矿业工程—选矿]