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    Method and apparatus for stabilizing plaster
    1.
    发明授权
    Method and apparatus for stabilizing plaster 有权
    稳定石膏的方法和装置

    公开(公告)号：US07371278B2

    公开(公告)日：2008-05-13

    申请号：US11014998

    申请日：2004-12-20

    Applicant: Joerg Bold

    Inventor： Joerg Bold

    IPC: C04B11/00 ,  C04B11/26

    CPC classification number: B01F9/06 ,  B01F9/0007 ,  B01F9/025 ,  B01F15/065 ,  B01F2015/062 ,  C04B11/007 ,  C04B11/0285 ,  C04B11/036 ,  F26B11/028 ,  F26B11/0436 ,  F26B11/0445

    Abstract: The invention provides a process for stabilizing plaster and an apparatus for implementing the moistening part of the process. The process comprises the following steps: a) providing a heated HH-plaster preferably at temperatures over 100° C.; b) feeding the hot plaster in a moistening device having walls heated to at least 100° C.; c) injecting water and/or steam into the moistening device in conditions that such not yet moistened surfaces of the plaster are exposed to the injected water and/or steam; d) maintaining an atmosphere in the moistening device at a level of the dew point in the range of 75 to 99° C.; e) feeding the moistened blend into a curing device; f) maintaining an atmosphere in the curing device above 75° C. for at least 3 minutes; g) feeding the moistened and cured blend into a drying device; and h) drying said moistened and cured blend.The invention also provides an apparatus for moistening β-hemihydrate plaster comprising a rotating drum with lifting blades inside where all walls in contact with the product are externally heated at a temperature above 100° C.

    Abstract translation: 本发明提供了一种用于稳定石膏的方法和用于实现该方法的润湿部分的装置。 该方法包括以下步骤：a）优选在高于100℃的温度下提供加热的HH-石膏; b）将热石膏送入具有加热到至少100℃的壁的加湿装置中; c）在这种尚未润湿的石膏表面暴露于注入的水和/或蒸汽的条件下，将水和/或蒸汽注入到润湿装置中; d）将润湿装置的气氛保持在75〜99℃范围内的露点水平; e）将润湿的混合物喂入固化装置; f）将固化装置的气氛保持在75℃以上至少3分钟; g）将润湿和固化的混合物进料到干燥装置中; 和h）干燥所述润湿和固化的共混物。 本发明还提供一种用于润湿β-半水泥石膏的装置，其包括具有提升叶片的旋转滚筒，其中与产品接触的所有壁在100℃以上的温度下被外部加热。

    Apparatus for calcining wet powdery gypsum
    2.
    发明授权
    Apparatus for calcining wet powdery gypsum 失效
    用于煅烧湿粉状石膏的装置

    公开(公告)号：US4118196A

    公开(公告)日：1978-10-03

    申请号：US369570

    申请日：1973-06-13

    Applicant: Yoshiharu Fukuda ,  Kazumasa Ohtani ,  Tossio R. Onissi ,  Akitoshi Takeuchi

    Inventor： Yoshiharu Fukuda ,  Kazumasa Ohtani ,  Tossio R. Onissi ,  Akitoshi Takeuchi

    IPC: B01J6/00 ,  C04B11/036 ,  F27B15/00

    CPC classification number: B01J6/004 ,  C04B11/036

    Abstract: Apparatus for calcining wet powdery gypsum which comprises:(A) a furnace which generates a hot gas having a temperature higher than 900.degree. C;(b) a straight cylindrical hot gas supply pipe connected with the gas outlet of said furnace and having a tapered upper portion;(C) a straight cylindrical high stream velocity pipe connected with the tapered portion of said hot gas supply pipe;(D) a vortex chamber connected with the upper part of said high stream velocity pipe, which has a diameter bigger than that of said high stream velocity pipe and has tapered portions both at the gas inlet and outlet;(E) a wet powdery gypsum supply pipe connected with the side wall of said vortex chamber, said gypsum supply pipe being connected in such a way that a projected extension of the lower edge of said gypsum supply pipe, following the same angle as that pipe, would intersect the center axis of said vortex chamber at a point higher than the bottom of said vortex chamber and lower than 1/2 H from the bottom of said vortex chamber;(F) a heat transmission pipe connected with the gas outlet of said vortex chamber; and(G) a collector connected with said heat transmission pipe. This apparatus produces calcined homogeneous gypsum.

    Abstract translation: 用于煅烧湿粉状石膏的装置，包括：

    Gypsum Based Compositions
    6.
    发明申请
    Gypsum Based Compositions 有权
    石膏基组合物

    公开(公告)号：US20100288415A1

    公开(公告)日：2010-11-18

    申请号：US12598184

    申请日：2008-04-11

    Applicant: Cedric Biguenet ,  Sam O'Keefe ,  Agnès Smith ,  Thierry Chotard

    Inventor： Cedric Biguenet ,  Sam O'Keefe ,  Agnès Smith ,  Thierry Chotard

    IPC: C04B11/024 ,  B32B37/12

    CPC classification number: C04B28/147 ,  C04B11/024 ,  C04B2103/302 ,  C04B2201/50 ,  C04B20/0048 ,  C04B22/147 ,  C04B22/148 ,  C04B38/10 ,  C04B11/036

    Abstract: A gypsum stucco composition comprising the following components finely divided; calcium sulphate hemihydrate in calcined solid beta crystalline form; and in intimate mixture with said finely divided calcium sulphate hemihydrate and mixed therewith no later than calcination to form the hemihydrate, a sulphate salt comprising at least one of ammonium sulphate and aluminium sulphate, in an amount such that when the stucco composition is mixed with water and allowed to set, the resulting set plaster has increased compressive strength, flexural strength and/or E-modulus compared to a set plaster produced from said finely divided calcium sulphate hemihydrate containing no said sulphate salt.

    Abstract translation: 一种石膏灰泥组合物，其包含细分的以下组分; 煅烧固体β晶型的硫酸钙半水合物; 并且与所述细碎的硫酸钙半水合物紧密地混合并且不迟于煅烧混合以形成半水合物，包含硫酸铵和硫酸铝中的至少一种的硫酸盐，其量使得当灰泥组合物与水混合时 并且允许固化，与由不含所述硫酸盐的所述细碎的硫酸钙半水合物制成的固定石膏相比，所得到的固化石膏具有增加的抗压强度，弯曲强度和/或E模量。

    Apparatus for stabilizing plaster
    7.
    发明授权
    Apparatus for stabilizing plaster 失效
    用于稳定石膏的装置

    公开(公告)号：US07748888B2

    公开(公告)日：2010-07-06

    申请号：US12068335

    申请日：2008-02-05

    Applicant: Joerg Bold

    Inventor： Joerg Bold

    IPC: B28C1/22

    CPC classification number: B01F9/06 ,  B01F9/0007 ,  B01F9/025 ,  B01F15/065 ,  B01F2015/062 ,  C04B11/007 ,  C04B11/0285 ,  C04B11/036 ,  F26B11/028 ,  F26B11/0436 ,  F26B11/0445

    Abstract: A process for stabilizing plaster includes: a) providing a heated HH-plaster; b) feeding the hot plaster in a moistening device having walls heated to at least 100° C.; c) injecting water and/or steam into the moistening device in conditions that such not yet moistened surfaces of the plaster are exposed to the injected water and/or steam; d) maintaining an atmosphere in the moistening device at a level of the dew point in the range of 75 to 99° C.; e) feeding the moistened blend into a curing device; f) maintaining an atmosphere in the curing device above 75° C. for at least 3 minutes; g) feeding the moistened and cured blend into a drying device; and h) drying the moistened and cured blend.Also an apparatus for moistening β-hemihydrate plaster includes a rotating drum with lifting blades inside where all walls in contact with the product are externally heated at a temperature above 100° C.

    Abstract translation: 稳定石膏的方法包括：a）提供加热的HH-石膏; b）将热石膏送入具有加热到至少100℃的壁的加湿装置中; c）在这种尚未润湿的石膏表面暴露于注入的水和/或蒸汽的条件下，将水和/或蒸汽注入到润湿装置中; d）将润湿装置的气氛保持在75〜99℃范围内的露点水平; e）将润湿的混合物喂入固化装置; f）将固化装置的气氛保持在75℃以上至少3分钟; g）将润湿和固化的混合物进料到干燥装置中; 和h）干燥湿润和固化的混合物。 另外，一种用于润湿和混合水泥膏的装置包括一个具有提升叶片的旋转滚筒，其中与产品接触的所有壁都在100℃以上的温度下被外部加热。

    Process and apparatus for calcining gypsum
    8.
    发明授权
    Process and apparatus for calcining gypsum 失效
    煅烧石膏的方法和设备

    公开(公告)号：US4569831A

    公开(公告)日：1986-02-11

    申请号：US718592

    申请日：1985-04-01

    Applicant: Sidney M. Cohen

    Inventor： Sidney M. Cohen

    IPC: C04B11/036 ,  F27B15/00 ,  C04B11/00 ,  C01F11/46 ,  C04B11/02

    CPC classification number: F27B15/003 ,  C04B11/036

    Abstract: An apparatus and process for calcining gypsum is disclosed which utilizes a flash furnace for rapidly calcining fine particulate gypsum while the material is suspended in a stream of hot gas. The method and apparatus utilize a two-stage suspension preheater for utilizing waste gases from the calcining furnace for preheating raw material to be calcined and a two-stage suspension cooler for cooling hot calcined gypsum which is discharged from the calcining furnace. Spent cooling gas is supplied to the preheater for use in preheating the fresh gypsum to be calcined. The invention also contemplates recirculating a portion of the gypsum discharged from the furnace back to the furnace for further calcination. Hot product may be discharged directly from the furnace.

    Abstract translation: 公开了一种用于煅烧石膏的设备和方法，其利用闪蒸炉快速煅烧细颗粒石膏，同时将材料悬浮在热气流中。 该方法和装置利用两级悬浮预热器，利用来自煅烧炉的废气预热待煅烧原料，以及两级悬浮冷却器，用于冷却从煅烧炉排出的热煅烧石膏。 供给预热器的废冷却气体用于预热待煅烧的新鲜石膏。 本发明还考虑将从炉排出的一部分石膏再循环回炉子进一步煅烧。 热产品可以直接从炉子排出。

    Method and apparatus for burning gypsum
    9.
    发明授权
    Method and apparatus for burning gypsum 失效
    用于刺激疱疹的方法和装置

    公开(公告)号：US3773892A

    公开(公告)日：1973-11-20

    申请号：US3773892D

    申请日：1972-09-06

    Applicant: RHEINSTAHL AG

    Inventor： REIMANN G ,  WIECHMANN O

    IPC: C04B11/02 ,  C01F11/46 ,  C04B11/036 ,  F27B15/00

    CPC classification number: C01F11/466 ,  C04B11/036

    Abstract: A METHOD FOR BURNING GYPSUM IN A HEATING GAS CURRENT FORMED BY HEATING A GAS IN A CYCLONE BURNING PLANT USING A PLURALITY OF CYCLONES ARRANGED IN SERIES COMPRISES MEASURING THE CRYSTAL WATER CONTENT OF THE MATERIAL WHICH ISSUES FROM THE INDIVIDUAL CYCLONE STAGES AND VARYING THE PORTIONS OF THE TOTAL MATERIAL FLOWING THROUGH THE INDIVIDUAL STAGES QUANTITATIVELY IN ORDER TO REGULATE THE CHARACTERISTICS OF THE END PRODUCT. THE APPARATUS INCLUDES A PLURALITY OF CYCLONE HEATERS IN WHICH THE RAW MATERIAL IS TREATED AND WHICH ARE HEATED BY HEATING GASES WHICH ARE GENERATED IN A COMBUSTION DEVICE AND CIRCULATED IN SERIES THROUGH THE CYCLONE HEATERS. A CONVEYOR IS MOVABLE THROUGH A PATH INTERCEPTING THE DISCHARGES FROM EACH OF THE CYCLONE HEATERS EXTENDING FROM THE HIGHEST TEMPERATURE STAGE TO THE LOWEST TEMPERATURE STAGE AND A MEASURING DEVICE IS ARRANGED AFTER EACH DISCHARGE TO REGULATE THE AMOUNT OF THE DISCHARGE IN ORDER TO VARY THE CONSTITUENCY OF THE MATERIAL FED TO THE CONVEYOR OR IN ACCORDANCE WITH THE CONDITIONS WHICH HAVE BEEN SENSED BY THE MEASURING INSTRUMENTS.

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