Morphology Change of Precipitated Calcium Carbonate According to Hydration Temperature

摘要：

Calcined calcium oxide from limestone is hydrated to manufacture calcium hydroxide, and then precipitated calcium carbonate is synthesized from calcium hydroxide. Precipitated calcium carbonate of various morphologies is obtained by controlled conditions of each step and characteristics of limestone, calcium oxide and calcium hydroxide. Especially characteristics of calcium hydroxide have the most influence on morphology of precipitated calcium carbonate character. In this study,therefore, it is investigated the specific surface area of calcium hydroxide and morphology of precipitated calcium carbonate according to hydration temperature. Calcium hydroxide hydrated at high initial temperature has larger particle size than that hydrated at low initial temperature. And formation yield of aragonite precipitated calcium carbonate has improved by using calcium hydroxide had larger particle size (hydrated at high initial temperature).

关键词： PCC(Precipitated Calcium Carbonate) Aragonite Hydration Morphology Synthesis

作者: J. W. Ahn J. A. Kim K. S. You

作者单位: Minerals & Materias Processing Division, Korea Institute of Geoscience & Mineral Resources, Daejeon, Korea

会议类型: 国际会议

会议名称: XXIV International Mineral Processing Congress(第24届国际矿物加工大会)

会议地点: 北京

会议语种:英文

页码: 3219-3222

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）