Removal of contaminants from strongly alkaline solution
    3.
    发明授权
    Removal of contaminants from strongly alkaline solution 失效
    从强碱性溶液中去除污染物

    公开(公告)号:US4289629A

    公开(公告)日:1981-09-15

    申请号:US168833

    申请日:1980-07-10

    申请人: Claude R. Andrews

    发明人: Claude R. Andrews

    摘要: The chloride ion and carbonate ion concentrations of a strongly alkaline solution can be reduced by the process of mixing sodium aluminosilicate into the solution, heating the resulting solution to a temperature of at least 90 degrees Celsius to form a sodalite type product, and filtering the sodalite type product from the solution.

    摘要翻译: 强碱性溶液的氯离子和碳酸根离子浓度可以通过将硅铝酸钠混合到溶液中的方法来降低,将所得溶液加热到至少90摄氏度的温度以形成钠盐型产物,并过滤方钠石 从解决方案中输入产品。

    Process for producing calcium carbonate and products thereof
    6.
    发明授权
    Process for producing calcium carbonate and products thereof 失效
    碳酸钙的制造方法及其制造方法

    公开(公告)号:US4888160A

    公开(公告)日:1989-12-19

    申请号:US47318

    申请日:1987-05-08

    IPC分类号: C01F11/18

    摘要: A process for producing calcium carbonate from calcium hydroxide derived from, for example, limestone, comprises injecting a gas containing carbon dioxide into a recirculating stream flowing in a recycle piping system in communication with a reaction vessel. The carbon dioxide containing gas is injected at a turbulent area located in the recycle piping system. By controlling reaction parameters including pH and temperature, novel calcium carbonate products are formed by the process.

    摘要翻译: 从由例如石灰石衍生的氢氧化钙制备碳酸钙的方法包括将含有二氧化碳的气体注入到与反应容器连通的循环管道系统中流动的再循环流中。 含二氧化碳的气体被注入位于再循环管道系统中的湍流区域。 通过控制包括pH和温度的反应参数,通过该方法形成新的碳酸钙产物。

    Endothermic blowing agents compositions and applications
    7.
    发明授权
    Endothermic blowing agents compositions and applications 失效
    吸热发泡剂的组成和应用

    公开(公告)号:US5302455A

    公开(公告)日:1994-04-12

    申请号:US873540

    申请日:1992-04-22

    IPC分类号: C08J9/08 B32B5/16

    CPC分类号: C08J9/08 Y10T428/2991

    摘要: A stabilized powdered endothermic blowing agent which is a mixture of polycarboxylic acid and an inorganic carbonate, the polycarboxylic acid and the inorganic carbonate each having been surface treated with a component which prevents water from being absorbed thereby. The blowing agent is incorporated into a composition for producing foamed products. Additives may be added to the composition which function in conjunction with the blowing agent to cause surface migration of the additives and/or improve weld line strength of the foamed products.

    摘要翻译: 作为多元羧酸和无机碳酸酯的混合物的稳定化的粉末吸热发泡剂,各种已经用防止水被其吸收的成分进行表面处理的多元羧酸和无机碳酸盐。 将发泡剂并入用于生产发泡产品的组合物中。 可以将添加剂加入到与发泡剂结合起作用的组合物中以引起添加剂的表面迁移和/或提高发泡产品的焊接线强度。

    Method for producing amorphous aluminocarbonate compounds
    9.
    发明授权
    Method for producing amorphous aluminocarbonate compounds 失效
    无定形铝碳酸酯化合物的制备方法

    公开(公告)号:US5055284A

    公开(公告)日:1991-10-08

    申请号:US095456

    申请日:1987-09-11

    IPC分类号: C01F11/18

    摘要: A method for producing amorphous aluminocarbonate compounds which comprises continuously recirculating a first aqueous solution from a reaction vessel through a recycle system and injecting a gas comprising carbon dioxide into the first solution at a turbulent area located in the recycle system. A second aqueous solution is added to the first solution while the gas injection is continued, and the pH of the resulting mixture is maintained in the approximate range of from 8 to 10. The gas injection is discontinued when the entire amount of the second solution has been added to the first solution, in order to allow further precipitation of the amorphous compound. The method is particularly adapted for producing amorphous sodium aluminocarbonate and sodium magnesium aluminocarbonate.

    摘要翻译: 一种制备无定形铝碳酸酯化合物的方法,其包括使来自反应容器的第一水溶液连续再循环通过再循环系统,并在位于循环系统中的湍流区域将包含二氧化碳的气体注入第一溶液中。 将第二水溶液加入到第一溶液中,同时继续注入气体,所得混合物的pH值保持在8至10的范围内。当第二溶液的总量为 加入到第一溶液中,以便使无定形化合物进一步沉淀。 该方法特别适用于生产无定形的铝碳酸钠和铝碳酸镁镁。