纸张涂布用沉淀碳酸钙的研制

Preparation of Precipitated Calcium Carbonate for the Use of Paper Coatings

以有机酸或其盐做添加剂，采用常压碳化法制成了沉淀碳酸钙。该产品是一种平均粒径在０．８～１．Ｏ微米之间的具有针柱状晶形结构的白色粉末，具有粒度均一、白度高、遮盖力强、分散性能良好等特点，可制做高浓度低粘度料浆，适用于做纸张涂布颜料。

sing some organic acids or their salts as additives,at ordinary pressure precipitated calcium carbonate was prepared by the carbonation method.The product was white powder with acicular crystal of 0.8～1.0μm average grain size.The grain size was uniform,whiteness. high,covering power strong and dispersion excellent and was useful for making the size with high concentration and low viscosity m paper coatings.