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首页> 外国专利> Procedure for preparing a product CaCO3 Precipitate, which comprises preparing an aqueous suspension of precipitated CaCO3 carbonatando Seeds of a suspension of Ca (OH) 2 in the presence of Sr (OH) 2 and form an aqueous suspension of the product carbonatando CaCO3 slurry of Ca (OH) 2 in pres The Seed Gum. The Product and its use

Procedure for preparing a product CaCO3 Precipitate, which comprises preparing an aqueous suspension of precipitated CaCO3 carbonatando Seeds of a suspension of Ca (OH) 2 in the presence of Sr (OH) 2 and form an aqueous suspension of the product carbonatando CaCO3 slurry of Ca (OH) 2 in pres The Seed Gum. The Product and its use

机译：制备产物CaCO3沉淀的方法，该方法包括在Sr（OH）2存在下制备沉淀的CaCO3碳酸盐的水悬浮液，形成Ca（OH）2悬浮液的种子，并形成Ca的产物碳酸盐CaCO3浆料的水悬浮液。 （OH）2在pres种子胶中。产品及其用途

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摘要

The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH) 2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH) 2 , based upon moles of Ca(OH) 2 prior to or during carbonation; forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH) 2 in the presence of 0.5 to 5 % by dry weight of the precipitated calcium carbonate seeds, wherein the precipitated calcium carbonate seeds have a D50 that is less than the D50 of the precipitated calcium carbonate product and the precipitated calcium carbonate seeds have an aragonitic polymorph content greater than or equal to the precipitated calcium carbonate product.
机译：本发明提供了制备沉淀碳酸钙产物的方法。该方法包括以下步骤：通过在0.005至0.030摩尔Sr（以Sr（OH）2的形式存在）的基础上碳酸化Ca（OH）2的悬浮液来制备沉淀的碳酸钙种子的水悬浮液，基于Sr（OH）2的摩尔数。碳酸化之前或期间的Ca（OH）2;通过在0.5至5％干重的沉淀碳酸钙种子的存在下碳酸化Ca（OH）2的浆液来形成沉淀碳酸钙产物的水悬浮液，其中沉淀碳酸钙种子的D50小于D50大于沉淀的碳酸钙产物的D50，并且沉淀的碳酸钙晶种的文石多晶型物含量大于或等于沉淀的碳酸钙产物。

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