磷石膏钙渣制备轻质碳酸钙过程中沉降体积的研究  

Research on Sedimentation Volume during Calcium Phosphogypsum Slag Preparation of Precipitated Calcium Carbonate

作　　者：刘健[1] 朱必学[1] 朱云勤[1] 解田 朱纯[1] 杨丽萍 贾洪秀[1] 

机构地区：[1]贵州大学化学与化工学院化学系,贵州贵阳550025 [2]贵州瓮福(集团)有限责任公司,贵州福泉550501

出　　处：《化工技术与开发》2010年第12期8-10,共3页Technology & Development of Chemical Industry

基　　金：贵州省科技厅技术攻关项目(黔科合GY字[2010]3059)

摘　　要：以磷石膏钙渣为原料,用盐酸浸取将其中的钙溶出,滤液经精制后合成制备轻质碳酸钙。探讨了初始反应温度、溶液浓度、CO2流量对轻质碳酸钙产品沉降体积的影响,并得到了优化工艺参数。结果表明,在最优工艺条件下制备的轻质碳酸钙产品粒径较细,分散性好,其沉降体积可达3.3 mL·g-1。该工艺条件对于磷石膏钙渣的资源化利用具有重要意义。As raw material,calcium-phosphorus gypsum slag would be one of the hydrochloric acid leaching of calcium leaching,the filtrate was used for the preparation of refined synthesis of precipitated calcium carbonate.Effect of the initial reaction temperature,solution concentration,CO2 flow rate on the light calcium carbonate sedimentation volume was investigated,and the process parameters were optimized.The results showed that under optimum conditions,the light calcium carbonate product size was smaller,decentralized nature was good,its settlement volume was up to 3.3mL·g-1.

关 键 词：磷石膏钙渣 轻质碳酸钙 沉降体积 

分 类 号：TQ132.32[化学工程—无机化工]