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发明公开
CN107324366A 一种高球霰石含量沉淀碳酸钙及其制备方法 无效 - 撤回

一种高球霰石含量沉淀碳酸钙及其制备方法
摘要：
本发明公开了一种高球霰石含量沉淀碳酸钙的制备方法及其得到的高球霰石含量沉淀碳酸钙。制备步骤为：向浓度为0.5～2.0mol/L的氢氧化钙悬浮液中加入一定比例的天冬氨酸添加剂并混合均匀，调节悬浮液温度后，通入含CO2的气体碳化，当悬浮液pH降至7.0～7.5时停止通气，将悬浮液过滤、洗涤、干燥得到高球霰石含量的沉淀碳酸钙。本发明制备方法简单，条件温和，易于控制，成本低廉，可实现工业化生产。
摘要（英）：

The invention discloses a precipitated calcium carbonate with a high content of vaterite and a preparation method thereof. The preparation method comprises the following steps: adding a certain ratio of aspartic acid additive into calcium hydroxide suspension liquid with a concentration of 0.5 to 2.0 mol/L, evenly mixing, adjusting the temperature of the suspension liquid, introducing CO2 containing gas into the suspension liquid to carry out carbonization, when the pH of the suspension liquid reaches 7.0 to 7.5, stopping introducing CO2 containing gas, filtering the suspension liquid, washing, and drying to obtain the precipitated calcium carbonate with a high content of vaterite. The preparation method is simple, the conditions are mild and easy to control, the cost is low, and the industrial production can be realized.

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