天青石中添加CaCl_2生产SrCO_3的试验研究

Study on Process of Preparation Strontium Carbonate by Adding Calcium Dichloride to Lazurite

报导了添加剂CaCl2 在天青石还原焙烧中的反应行为 ;并从试验中寻找出了使用该添加剂的最佳反应条件 .实验结果表明 :CaCl2 用量为 0 .5 %～ 1% ,反应温度为 115 0～ 12 0 0℃ ,反应时间为 30min ,矿∶煤为 1∶0 .6 ,矿、煤粒度为 2 0～ 40目时 ,可使SrCO3 生产的转化率最高 .

In this paper, the reaction condition of calcining lazurite by adding calcium dichloride is reported. The best process condition is found through experiments. The experiments show that the percent conversion of strontium carbonate production is highest under the following conditions: calcium dichloride:0.5%～1%, temperature:1 150～1 200 ℃, reaction time:30 min, rate of lazurite to coal:1∶0.6, granularity of lazurite and coal:20～40 mesh.