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    • 84. 发明公开
    • A method for preparing barium carbonate and the product obtained by the method
    • Verfahren zur Herstellung von Bariumcarbonat und dadurch erhaltenes Produkt
    • EP2666753A2
    • 2013-11-27
    • EP12189505.6
    • 2012-10-23
    • Guizhou Redstar Developing Co., Ltd.Shenzhen Haoyitong Investment And Development Co., Ltd.
    • Jiang, ZhiguangHua, DongWu, Fei
    • C01F11/18
    • C01F11/188C01P2006/12Y10T428/2982
    • The present invention relates to a method for preparing barium carbonate and the barium carbonate product obtained by the method. The method for preparing barium carbonate comprises: (1) Adding barium hydroxide octahydrate crystal into the ice-water bath and mixing them, and controlling the temperature to be within 0∼5°C; (2) Introducing carbon dioxide into the mixture obtained from the step (1), till pH value of the reaction solution reaches 6.0-7.0; (3) Carrying out solid-liquid separation for the solid-liquid mixture obtained from the step (2), drying the obtained solid so as to obtain barium carbonate product. The present invention method solves the problem in the prior art that the character of low strontium and the character of large specific surface area cannot co-exist, which makes the property of barium carbonate product can not affect the sintering temperature, and thus the property material is improved.
    • 本发明涉及一种制备碳酸钡的方法和通过该方法获得的碳酸钡产品。 制备碳酸钡的方法包括:(1)将氢氧化钡八水合物晶体加入到冰水浴中并混合,并将温度控制在0℃以内; (2)向步骤(1)得到的混合物中引入二氧化碳,直到反应溶液的pH值达到6.0〜7.0; (3)对由步骤(2)获得的固液混合物进行固液分离,干燥得到的固体,得到碳酸钡产品。 本发明的方法解决了现有技术中低锶的特性和比表面积大的特征不能共存的问题,这使得碳酸钡产品的性能不会影响烧结温度,因此其性能材料 改进了