Method of water dispersing pregelatinized starch in making gypsum products
    4.
    发明授权
    Method of water dispersing pregelatinized starch in making gypsum products 有权
    水分散预胶化淀粉制备石膏产品的方法

    公开(公告)号:US08262820B2

    公开(公告)日:2012-09-11

    申请号:US11413528

    申请日:2006-04-28

    IPC分类号: B32B13/00

    摘要: The invention provides in one embodiment a gypsum-containing slurry including stucco and an aqueous pre-dispersion of a pregelatinized starch. Also provided is a method of making gypsum wallboard by providing a pre-dispersion of the pregelatinized starch in water, and adding the pregelatinized starch pre-dispersion to the gypsum-containing slurry. The pregelatinized starch can have a particle size distribution within the following range: d (0.1)=about 20μ-35μ, d (0.5)=about 60μ-110μ, d (0.9)=about 100μ-220μ.

    摘要翻译: 本发明在一个实施方案中提供了包含灰泥和预胶化淀粉的预分散水的含石膏浆料。 还提供了通过提供预胶化淀粉在水中的预分散并将预胶化淀粉预分散体加入到含石膏浆料中来制备石膏墙板的方法。 预胶化淀粉可以具有以下范围内的粒度分布:d(0.1)=约20μ-35μ,d(0.5)=约60μ-110μ,d(0.9)=约100μ-220μ。

    Method and apparatus to minimize air-slurry separation during gypsum slurry flow
    6.
    发明授权
    Method and apparatus to minimize air-slurry separation during gypsum slurry flow 有权
    石膏浆料流中气浆分离最小化的方法和装置

    公开(公告)号:US08475762B2

    公开(公告)日:2013-07-02

    申请号:US13151749

    申请日:2011-06-02

    摘要: A method and apparatus for providing an evenly mixed additive enhanced gypsum slurry to a web. Calcined gypsum and water are inserted into a mixer through at least one inlet of the mixer. The contents are agitated to form a slurry. The slurry is passed from an outlet of the mixer into a conduit. An additive is introduced into the slurry along a length of the conduit to achieve a flow stream of a slurry/additive mixture. A cross section of the flow stream is expanded in the conduit while not changing direction of the flow stream and a direction of the flow stream is changed while not expanding the cross section of the flow stream and conduit, all prior to the flow steam exiting from an outlet of the conduit.

    摘要翻译: 一种用于将均匀混合的添加剂增强的石膏浆料提供到幅材的方法和装置。 煅烧的石膏和水通过混合器的至少一个入口插入混合器中。 将内容物搅拌以形成浆料。 将浆料从混合器的出口通入导管中。 沿着管道的长度将添加剂引入浆料中以实现浆料/添加剂混合物的流动流。 流动流的横截面在管道中膨胀,而不改变流动流的方向,并且流动流的方向在不扩大流动流和导管的横截面的同时改变流动流的方向,所有这些在流动蒸汽从 导管的出口。

    METHOD AND APPARATUS TO MINIMIZE AIR-SLURRY SEPARATION DURING GYPSUM SLURRY FLOW
    8.
    发明申请
    METHOD AND APPARATUS TO MINIMIZE AIR-SLURRY SEPARATION DURING GYPSUM SLURRY FLOW 有权
    减少浆液流动中空气分离的方法和装置

    公开(公告)号:US20120308463A1

    公开(公告)日:2012-12-06

    申请号:US13151749

    申请日:2011-06-02

    IPC分类号: C01F11/46 F16L9/00

    摘要: A method and apparatus for providing an evenly mixed additive enhanced gypsum slurry to a web. Calcined gypsum and water are inserted into a mixer through at least one inlet of the mixer. The contents are agitated to form a slurry. The slurry is passed from an outlet of the mixer into a conduit. An additive is introduced into the slurry along a length of the conduit to achieve a flow stream of a slurry/additive mixture. A cross section of the flow stream is expanded in the conduit while not changing direction of the flow stream and a direction of the flow stream is changed while not expanding the cross section of the flow stream and conduit, all prior to the flow steam exiting from an outlet of the conduit.

    摘要翻译: 一种用于将均匀混合的添加剂增强的石膏浆料提供到幅材的方法和装置。 煅烧的石膏和水通过混合器的至少一个入口插入混合器中。 将内容物搅拌以形成浆料。 将浆料从混合器的出口通入导管中。 沿着管道的长度将添加剂引入浆料中以实现浆料/添加剂混合物的流动流。 流动流的横截面在管道中膨胀,而不改变流动流的方向,并且流动流的方向在不扩大流动流和导管的横截面的同时改变流动流的方向,所有这些在流动蒸汽从 导管的出口。