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    METHOD FOR PREPARING BARIUM CARBONATE AND THE PRODUCT OBTAINED BY THE METHOD
    8.
    发明申请
    METHOD FOR PREPARING BARIUM CARBONATE AND THE PRODUCT OBTAINED BY THE METHOD 审中-公开
    制备碳酸钡的方法和方法获得的产品

    公开(公告)号：US20130316175A1

    公开(公告)日：2013-11-28

    申请号：US13596311

    申请日：2012-08-28

    申请人： Zhiguang JIANG ,  Dong HUA ,  Fei WU

    发明人： Zhiguang JIANG ,  Dong HUA ,  Fei WU

    IPC分类号： C01F11/18

    CPC分类号： C01F11/188 ,  C01P2006/12 ,  Y10T428/2982

    摘要： 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 can not co-exist, which makes the property of barium carbonate product can not affect the sintering temperature, and thus the property material is improved.

    摘要翻译： 本发明涉及一种制备碳酸钡和通过该方法获得的碳酸钡产品的方法。 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0〜5℃范围内。 （2）将二氧化碳引入从步骤（1）获得的混合物中，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，得到碳酸钡产物。 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，因此具有 材料得到改善。

    Production of barium carbonate from barium sulfate
    9.
    发明授权
    Production of barium carbonate from barium sulfate 失效
    从硫酸钡生产碳酸钡

    公开(公告)号：US3726963A

    公开(公告)日：1973-04-10

    申请号：US3726963D

    申请日：1971-03-30

    申请人： KNAPSACK AG

    发明人： TIEDEMANN J ,  HARNISCH H

    IPC分类号： C01F11/18

    CPC分类号： C01F11/188

    摘要： Production of barium carbonate by treatment of barium sulfate with an excess of an aqueous sodium carbonate solution under pressure and at temperatures higher than 100* C. The starting material is an aqueous barium sulfate suspension which contains sodium carbonate together with a phosphorus compound dissolved therein.

    摘要翻译： 通过在压力和高于100℃的温度下用过量的碳酸钠水溶液处理硫酸钡来生产碳酸钡。原料是含有碳酸钠和溶解在其中的磷化合物的硫酸钡水溶液悬浮液。