Methods and systems for addition of cellulose ether to gypsum slurry
    3.
    发明申请
    Methods and systems for addition of cellulose ether to gypsum slurry 审中-公开
    向石膏浆中加入纤维素醚的方法和系统

    公开(公告)号:US20080202415A1

    公开(公告)日:2008-08-28

    申请号:US11713951

    申请日:2007-02-28

    IPC分类号: B05C1/14

    摘要: An example system for making a gypsum board product comprises a container for containing a gypsum slurry, a moving receiver in communication with the container, wherein the container substantially continuously deposits the gypsum slurry on the moving receiver. A first and at least a second cellulose ether supply containing a first cellulose ether communicate with the container. The first and second supplies contain cellulose ethers having different physical or chemical properties. A controller is configured to change the amount of the first and second cellulose ethers delivered to the container in response to a change in at least one slurry physical property.

    摘要翻译: 用于制造石膏板产品的示例性系统包括用于容纳石膏浆料的容器,与容器连通的移动接收器,其中容器基本上将石膏浆料沉积在移动的接收器上。 含有第一纤维素醚的第一和至少第二纤维素醚供应源与容器连通。 第一和第二供应品含有具有不同物理或化学性质的纤维素醚。 控制器被配置为响应于至少一种浆料物理性质的变化而改变输送到容器中的第一和第二纤维素醚的量。

    Fiber reinforced gypsum panel
    4.
    发明申请
    Fiber reinforced gypsum panel 审中-公开
    纤维增强石膏板

    公开(公告)号:US20080152945A1

    公开(公告)日:2008-06-26

    申请号:US11643572

    申请日:2006-12-20

    IPC分类号: B32B3/18

    摘要: A gypsum-containing panel and a method of making it are disclosed including at least one facing layer having a first polymer that is reinforced with reinforcing fibers and a gypsum core that has a second polymer in a second polymer matrix interwoven with a gypsum matrix. The first polymer in the facing layer and said second polymer matrix in said gypsum core form a continuous polymer matrix.

    摘要翻译: 公开了一种含石膏板及其制造方法,包括至少一个具有由增强纤维增强的第一聚合物的面层和在与石膏基质交织的第二聚合物基质中具有第二聚合物的石膏芯。 所述石膏芯中的面层中的第一聚合物和所述第二聚合物基质形成连续的聚合物基质。

    Process for manufacturing ultra low consistency alpha- and beta- blend stucco
    9.
    发明授权
    Process for manufacturing ultra low consistency alpha- and beta- blend stucco 有权
    制造超低浓度α-和β-混合灰泥的方法

    公开(公告)号:US07588634B2

    公开(公告)日:2009-09-15

    申请号:US11533604

    申请日:2006-09-20

    IPC分类号: C04B11/00

    摘要: A process is disclosed for making a blend of alpha- and beta-stucco including a slurry calcination step to produce alpha calcium sulfate hemihydrate followed by a fluidized bed calcination step to produce beta calcium sulfate hemihydrate. The process starts with 50-75% gypsum-containing solids slurry, and then steam calcines the slurry in a first reactor to form partially calcined gypsum slurry which contains calcium sulfate dihydrate and alpha calcium sulfate hemihydrate. The partially calcined slurry is then dewatered. Then the filter cake is fed into a kettle to complete the calcination process by converting the calcium sulfate dihydrate of the filter cake material into beta calcium sulfate hemihydrate.

    摘要翻译: 公开了一种制备包括浆料煅烧步骤的α-和β-灰泥混合物以产生α硫酸钙半水合物,然后进行流化床煅烧步骤以产生β硫酸钙半水合物的方法。 该方法从50-75%含石膏固体浆料开始,然后蒸汽在第一反应器中煅烧浆料以形成含有硫酸钙二水合物和α硫酸钙半水合物的部分煅烧石膏浆料。 然后将部分煅烧的浆料脱水。 然后通过将滤饼材料的硫酸钙二水合物转化成β硫酸钙半水合物将滤饼进料到釜中以完成煅烧过程。