以金属锶残渣为原料制备工业碳酸锶

Preparation of Strotium Carbanate for Industrial Use with Strotium Residue as Material

对用氯化铵溶液浸锶,浸出液碳化得碳酸锶成品的工艺条件进行了研究。实验得到氯化铵浸锶的最佳工艺条件为:浸锶温度为80℃,浸锶时间为2 h,氯化铵加入量为使溶液pH值至8～9,锶渣粒度<80目,固液比1∶4。碳化阶段碳酸氢铵加入量为其理论量的110%。按该条件浸锶,并制备碳酸锶,锶的浸出率可达92.5%以上,产品质量符合HG/T2969—2010Ⅱ型标准。该工艺实现了锶资源的二次利用,为锶渣的回收再利用开辟了一条新途径。

Strotium carbanate for industrial use was prepared by leaching strotium residue with ammonium chloride and the leaching solution was carbonized by ammonium hydrogen carbonate.The optimum technological conditions of leaching strotium residue were that leaching temperature was 80 ℃, leaching time was 2 hours, ammonium chloride was added to make the pH value of the solution to 8-9,particle size of strontium residue was less 80 mesh, solid-liquid ratio was 1：4. In carbonation stage,the amout of ammonium hydrogen carbonate added was the 110% of the theoretical amount.In the technological conditions,strontium was leached strontium carbonate was prepared, leaching rate of the strontium could reach more than 92.5%, product quality could meet the type 11 of HG / T2969-2010 standard. The techonology is a new way for rycycling strotium residue.