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    Process for continuous modification of dihydrate gypsum and modified dihydrate gypsum obtained by the process
    1.
    发明授权
    Process for continuous modification of dihydrate gypsum and modified dihydrate gypsum obtained by the process 有权
    通过该方法获得的二水石膏和改性二水石膏的连续改性方法

    公开(公告)号：US08529863B2

    公开(公告)日：2013-09-10

    申请号：US13055891

    申请日：2009-07-31

    申请人： Itaru Yokoyama ,  Kouji Katsumoto ,  Yasuo Kawamura

    发明人： Itaru Yokoyama ,  Kouji Katsumoto ,  Yasuo Kawamura

    IPC分类号： C01F11/46

    CPC分类号： C01F11/46 ,  C01F11/466 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C04B11/007 ,  Y10T428/2982

    摘要： Disclosed is a process for the continuous modification of dihydrate gypsum. The process includes a hemihydration step of calcining the dihydrate gypsum as a raw material into hemihydrate gypsum and a recrystallization step of hydrating and recrystallizing the hemihydrate gypsum in an aqueous slurry to convert the hemihydrate gypsum into modified dihydrate gypsum of a crystalline form different from the dihydrate gypsum as the raw material. In the recrystallization step, the aqueous slurry in a recrystallization reaction tank is maintained at a constant temperature under stirring such that the aqueous slurry becomes uniform, and a feed rate of the hemihydrate gypsum to the recrystallization reaction tank and a discharge rate of the recrystallized and modified dihydrate gypsum from the recrystallization reaction tank are controlled such that the feed rate and the discharge rate become substantially equal to each other, whereby the feeding of the hemihydrate gypsum and the discharging of the recrystallized and modified dihydrate gypsum are conducted continuously or intermittently. According to the process, dihydrate gypsum as a starting raw material can be converted into high-purity, modified dihydrate gypsum of large crystals by recrystallizing the starting dihydrate gypsum after it is once calcined into hemihydrate gypsum although such modified dihydrate gypsum is not available in general.

    摘要翻译： 公开了连续改性二水石膏的方法。 该方法包括将二水石膏作为原料煅烧成半水石膏的半水合步骤和将水泥浆中的半水石膏水合和重结晶以将半水合石膏转化成不同于二水合物的结晶形式的改性二水石膏的重结晶步骤 石膏为原料。 在再结晶步骤中，将再结晶反应槽中的含水浆料在搅拌下保持在恒定温度，使得水性浆液变得均匀，并且半水石膏对再结晶反应槽的进料速率和再结晶和 控制来自再结晶反应槽的改性二水石膏使得进料速率和排出速率基本上彼此相等，从而连续地或间歇地进行半石膏的供给和再结晶和改性的二水合石膏的排出。 根据该方法，作为起始原料的二水石膏可以在一次煅烧成半水石膏之后，将起始二水石膏重结晶，可以转化为大晶体的高纯度，改性二水石膏，尽管这种改性二水石膏一般不可用 。

    COMPOSITION FOR BUILDING MATERIAL, AND GYPSUM BOARD AND CONSTRUCTION METHOD USING THEM AND WALL AND THE LIKE
    4.
    发明申请
    COMPOSITION FOR BUILDING MATERIAL, AND GYPSUM BOARD AND CONSTRUCTION METHOD USING THEM AND WALL AND THE LIKE 审中-公开
    建筑材料用组合物，胶板和使用它们的墙和建筑方法

    公开(公告)号：US20100043344A1

    公开(公告)日：2010-02-25

    申请号：US12092853

    申请日：2006-09-29

    申请人： Katsumi Tada ,  Kouji Yamakata ,  Itaru Yokoyama ,  Koji Katsumoto

    发明人： Katsumi Tada ,  Kouji Yamakata ,  Itaru Yokoyama ,  Koji Katsumoto

    IPC分类号： E04B1/00 ,  B32B9/00

    摘要： Provided is a building material with a higher specific gravity and/or radioactive-ray-shielding function while maintaining a workability equivalent to that of a conventional gypsum board. It relates to a gypsum-based building material manufactured by adding water to a composition in which a base material is a combination of a hydraulic gypsum and one kind or two or more kinds of dry-hardening calcium carbonate or calcium hydroxide or synthetic resin emulsions and an inorganic filler with a high specific gravity is compounded to it so that reaction and setting or drying and setting are conducted, wherein the composition is characterized by comprising 100 parts by weight of at least one kind or two or more kinds of base materials selected from the group consisting of calcium sulfate, calcium carbonate, calcium hydroxide and organic synthetic resin emulsions, and 50-3,000 parts by weight of at least one kind or two or more kinds of inorganic fillers whose true specific gravity is 3.5-6.0 which are selected from the group consisting of barium chloride, zinc oxide, aluminum oxide, titanium oxide, barium oxide, strontium carbonate, barium carbonate, and barium sulfate.

    摘要翻译： 提供具有较高比重和/或放射线屏蔽功能的建筑材料，同时保持与常规石膏板相当的可加工性。 本发明涉及一种通过将水添加到基材为液压石膏与一种或两种以上的干硬化碳酸钙或氢氧化钙或合成树脂乳液的组合的组合物而制造的石膏类建筑材料，以及 将比重高的无机填料与其混合，进行反应和凝固或干燥和固化，其中组合物的特征在于包含100重量份的至少一种或两种或更多种选自 由硫酸钙，碳酸钙，氢氧化钙和有机合成树脂乳液组成的组，以及50-3,000重量份的真比重为3.5-6.0的至少一种或两种或更多种无机填料，其选自 由氯化钡，氧化锌，氧化铝，氧化钛，氧化钡，碳酸锶，碳酸钡和硫酸钡组成的组。

    PROCESS FOR CONTINUOUS MODIFICATION OF DIHYDRATE GYPSUM AND MODIFIED DIHYDRATE GYPSUM OBTAINED BY THE PROCESS
    5.
    发明申请
    PROCESS FOR CONTINUOUS MODIFICATION OF DIHYDRATE GYPSUM AND MODIFIED DIHYDRATE GYPSUM OBTAINED BY THE PROCESS 有权
    连续改性二羟乙酸钙和改性二羟乙酸酯工艺的方法

    公开(公告)号：US20110135930A1

    公开(公告)日：2011-06-09

    申请号：US13055891

    申请日：2009-07-31

    申请人： Itaru Yokoyama ,  Kouji Katsumoto ,  Yasuo Kawamura

    发明人： Itaru Yokoyama ,  Kouji Katsumoto ,  Yasuo Kawamura

    IPC分类号： C01F11/46

    CPC分类号： C01F11/46 ,  C01F11/466 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/11 ,  C04B11/007 ,  Y10T428/2982

    摘要： Disclosed is a process for the continuous modification of dihydrate gypsum. The process includes a hemihydration step of calcining the dihydrate gypsum as a raw material into hemihydrate gypsum and a recrystallization step of hydrating and recrystallizing the hemihydrate gypsum in an aqueous slurry to convert the hemihydrate gypsum into modified dihydrate gypsum of a crystalline form different from the dihydrate gypsum as the raw material. In the recrystallization step, the aqueous slurry in a recrystallization reaction tank is maintained at a constant temperature under stirring such that the aqueous slurry becomes uniform, and a feed rate of the hemihydrate gypsum to the recrystallization reaction tank and a discharge rate of the recrystallized and modified dihydrate gypsum from the recrystallization reaction tank are controlled such that the feed rate and the discharge rate become substantially equal to each other, whereby the feeding of the hemihydrate gypsum and the discharging of the recrystallized and modified dihydrate gypsum are conducted continuously or intermittently. According to the process, dihydrate gypsum as a starting raw material can be converted into high-purity, modified dihydrate gypsum of large crystals by recrystallizing the starting dihydrate gypsum after it is once calcined into hemihydrate gypsum although such modified dihydrate gypsum is not available in general.

    摘要翻译： 公开了连续改性二水石膏的方法。 该方法包括将二水石膏作为原料煅烧成半水石膏的半水合步骤和将水泥浆中的半水石膏水合和重结晶以将半水合石膏转化成不同于二水合物的结晶形式的改性二水石膏的重结晶步骤 石膏为原料。 在再结晶步骤中，将再结晶反应槽中的含水浆料在搅拌下保持在恒定温度，使得水性浆液变得均匀，并且半水石膏对再结晶反应槽的进料速率和再结晶和 控制来自再结晶反应槽的改性二水石膏使得进料速率和排出速率基本上彼此相等，从而连续地或间歇地进行半石膏的供给和再结晶和改性的二水合石膏的排出。 根据该方法，作为起始原料的二水石膏可以在一次煅烧成半水石膏之后，将起始二水石膏重结晶，可以转化为大晶体的高纯度，改性二水石膏，尽管这种改性二水石膏一般不可用 。