Process for manufacturing ultra low consistency alpha- and beta- blend stucco
    1.
    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。

    Compositions and methods for treating set gypsum
    5.
    发明授权
    Compositions and methods for treating set gypsum 有权
    用于处理集石膏的组合物和方法

    公开(公告)号:US06822033B2

    公开(公告)日:2004-11-23

    申请号:US09992302

    申请日:2001-11-19

    IPC分类号: C08K332

    摘要: A composition and method for treating a set gypsum-containing material are disclosed. The composition is formed from at least water at least one trimetaphosphate salt, at least one monobasic phosphate salt, and at least one acyclic polyphosphate salt having at least three phosphate units. The method comprises applying to a set gypsum material at least two of the following inorganic phosphates: at least one monobasic phosphate salt, at least one trimetaphosphate salt, and at least one acyclic polyphosphate salt having at least three phosphate units. The method can be for inhibiting re-calcination of a set gypsum containing material, and/or for enhancing the strength, surface hardness, paintability, abrasion resistance, and/or water erosion resistance of a set gypsum-containing material. Also disclosed is a method of making a set gypsum-containing material.

    摘要翻译: 公开了一种用于处理集含石膏的材料的组合物和方法。 所述组合物由至少一种至少一种三偏磷酸盐,至少一种一磷酸盐和至少一种具有至少三个磷酸酯单元的无环多磷酸盐形成。 该方法包括将至少两种以下无机磷酸盐:至少一种一元磷酸盐,至少一种三偏磷酸盐和至少一种具有至少三个磷酸酯单元的无环多磷酸盐施用至一组石膏材料。 该方法可以用于抑制含石膏的材料的再煅烧,和/或用于提高含石膏材料的强度,表面硬度,可涂饰性,耐磨性和/或耐水蚀性。 还公开了制备含石膏的材料的方法。

    Cementitious article and method for preparing the same
    6.
    发明授权
    Cementitious article and method for preparing the same 有权
    水泥制品及其制备方法

    公开(公告)号:US08329308B2

    公开(公告)日:2012-12-11

    申请号:US12415931

    申请日:2009-03-31

    IPC分类号: B32B9/04 B32B27/00 B05D3/02

    摘要: A cementitious article and a method of making a cementitious article are disclosed. The cementitious article comprises a cementitious component that comprises a polyvinyl acetate type polymer, a monobasic phosphate, and optionally boric acid. Cementitious articles, such as board, are prepared such that the polyvinyl acetate type polymer, the monobasic phosphate, and optionally boric acid can be present in the cementitious core, and/or in dense layers if present. The concentration of the polyvinyl acetate type polymer, monobasic phosphate, and optionally boric acid in the cementitious article can increase from a central region A to peripheral regions B and C, respectively. In some embodiments, the polyvinyl acetate type polymer is a polyvinyl alcohol and the monobasic phosphate is monoammonium phosphate.

    摘要翻译: 公开了水泥制品和制造水泥制品的方法。 水泥制品包括水泥组分,其包含聚乙酸乙烯酯型聚合物,一元磷酸盐和任选的硼酸。 制备诸如板的水泥制品,使得聚乙酸乙烯酯型聚合物,一磷酸盐和任选的硼酸可以存在于水泥核心中,和/或以致密层存在(如果存在)。 水泥制品中聚乙酸乙烯酯型聚合物,一磷酸盐和任选的硼酸的浓度分别可以从中心区域A增加到外围区域B和C. 在一些实施方案中,聚乙酸乙烯酯型聚合物是聚乙烯醇,一元磷酸盐是磷酸二氢铵。

    Siloxane polymerization in wallboard
    7.
    发明授权
    Siloxane polymerization in wallboard 有权
    硅胶聚合在墙板上

    公开(公告)号:US08133600B2

    公开(公告)日:2012-03-13

    申请号:US12888162

    申请日:2010-09-22

    IPC分类号: B32B13/00 B32B13/08

    摘要: Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes.The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

    摘要翻译: 使用包括灰泥,C类飞灰,氧化镁和硅氧烷和水的乳液的石膏基浆料改善硅氧烷的聚合。 该浆料用于制造防水石膏制品的方法,其包括制备硅氧烷和水的乳液,然后将浆料与灰泥,氧化镁和C类粉煤灰的干混合物混合。 然后根据需要将浆料成形,并且使灰泥固化并且硅氧烷聚合。 得到的产品可用于制造具有核心的防水石膏板,该核心包括硫酸钙二水合物晶体和有机硅树脂的交织基质,其中交织基质在其中分散有包含氧化镁和C类飞沫的组分的催化剂 灰。

    SILOXANE POLYMERIZATION IN WALLBOARD
    8.
    发明申请
    SILOXANE POLYMERIZATION IN WALLBOARD 有权
    壁板中的硅氧烷聚合

    公开(公告)号:US20100055477A1

    公开(公告)日:2010-03-04

    申请号:US12617114

    申请日:2009-11-12

    IPC分类号: B32B13/04 C08K3/30 C08L3/00

    摘要: Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes.The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash.

    摘要翻译: 使用包括灰泥,C类飞灰,氧化镁和硅氧烷和水的乳液的石膏基浆料改善硅氧烷的聚合。 该浆料用于制造防水石膏制品的方法,其包括制备硅氧烷和水的乳液,然后将浆料与灰泥,氧化镁和C类粉煤灰的干混合物混合。 然后根据需要将浆料成形,并且使灰泥固化并且硅氧烷聚合。 得到的产品可用于制造具有核心的防水石膏板,该核心包括硫酸钙二水合物晶体和有机硅树脂的交织基质,其中交织基质在其中分散有包含氧化镁和C类飞沫的组分的催化剂 灰。

    Methods and systems for addition of cellulose ether to gypsum slurry
    10.
    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。