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patent gypsum gypsum scrap

  • US5141109A Shipping container of scrap gypsum board

    A patentability search failed to disclose any prior art teaching or suggesting the use of scrap gypsum board for forming a container for handling and transporting a product, and especially as a...

  • Cited by: 10
  • KR101433692B1 Gypsum waste recycling system Google

    A paper crumb separator 5, a particle size separator 6, a second crusher 7, a return passage 9, a crusher 1, a first crusher 3, a transport device 4, Only the fine gypsum A having a standard particle size or less classified as a regenerated raw material is recycled to the recycled raw material container 67 in the particle size fractionator 6, And the gypsum gypsum is again crushed in the

  • Author: 요시미츠 다카야마
  • US6164572A Apparatus and method for recycling

    Gypsum wallboard is formed from a gypsum core sandwiched between two sheets of heavy paper. The apparatus has a crushing means to crush the gypsum core of the wallboard and shred the paper...

  • Cited by: 14
  • WO1996005149A1 A gypsum/cellulosic Google Patents

    Another source of both gypsum and cellulosic fibers is waste (scrap) gypsum wallboard. Expanded perlite is the preferred lightweight aggregate material. WO1996005149A1 A gypsum/cellulosic fiber acoustical tile composition Google Patents A gypsum/cellulosic fiber acoustical tile composition Download PDF Info Publication number WO1996005149A1. WO1996005149A1 PCT/US1995/009703

  • Cited by: 93
  • Shipping container of scrap gypsum Free Patents Online

    25/08/1992· Having described the invention, it is desired to claim: 1. A shipping container for handling and transporting gypsum board scrap, said container being constructed of pieces of scrap gypsum board and comprising a bottom floor of a large piece of scrap gypsum board, a top closure piece of scrap gypsum board, said top and bottom pieces being held apart by four vertical side wallsОнлайн-запрос

  • GYPSUM SET ACCELERATOR AND METHOD OF Free

    This claims the benefit of United Stated provisional patent application No. 62/487,658, entitled GYPSUM SET ACCELERATOR AND METHOD OF PREPARING SAME, filed Apr. 20, 2017. FIELD OF THE INVENTION. The present invention relates to a method and a composition for accelerating the setting reaction of an aqueous calcined gypsum slurry to form gypsum-containing products, as well as aОнлайн-запрос

  • Apparatus and method for fractionating gypsum slurry and

    The invention claimed is: 1. A machine for manufacturing gypsum board with a gypsum core covered with a sheet of paper for gypsum board liner, comprising: a chute section having a slurry discharge port for feeding gypsum slurry for the gypsum core to a widthwise center part of a sheet of paper for gypsum board liner with a stable density and pressure; a single mixer having a housing and aОнлайн-запрос

  • Patents Assigned to National Gypsum Properties Justia

    Abstract: A slurry for manufacturing gypsum board is disclosed. The slurry comprises calcined gypsum, water, a foaming agent, and a thickening agent. The thickening agent of the present disclosure acts to improve the cohesiveness of the slurry without adversely affecting the setting time of the slurry, the paper-to-core bond (wet and dry), or the head of the slurry by acting as a defoamingОнлайн-запрос

  • Gypsum to Gypsum

    A Gypsum Wallboard Recycling Company A Gypsum Wallboard Recycling Company A Gypsum Wallboard Recycling Company. About Us. Have Scrap? Contractors who work with use realize source separation is the way of the future for drywall recycling. We aim to ALWAYS be competitive with conventional landfill fees and waste transfer stations and always competitively priced compared to mined gypsumОнлайн-запрос

  • Patents Assigned to Yoshino Gypsum Co., Ltd. Justia

    20/12/2018· Justia Patents Patents and Patent Application Resources. Abstract: Behavior of a flow of foam ejected to a gypsum slurry can be stabilized, and a relatively large amount of foam can be homogeneously or uniformly dispersed in the slurry. A mixer has a mixing area for preparing gypsum slurry, a slurry delivery section for delivering the slurry from the mixing area, and a feeding port forОнлайн-запрос

  • US Patent for Apparatus and method for recycling

    Drywall or sheetrock, as gypsum wallboard is sometimes called, comprises a calcined gypsum core sandwiched between two layers of heavy paper. Wallboard is cut during installation to fit door and window casings, shelves, and stairways leaving odd sized pieces of scrap board. Wallboard waste is also generated during renovation and demolition. The cost of disposing of this waste and scrap boardОнлайн-запрос

  • Shipping container of scrap gypsum Free Patents Online

    25/08/1992· Having described the invention, it is desired to claim: 1. A shipping container for handling and transporting gypsum board scrap, said container being constructed of pieces of scrap gypsum board and comprising a bottom floor of a large piece of scrap gypsum board, a top closure piece of scrap gypsum board, said top and bottom pieces being held apart by four vertical side wallsОнлайн-запрос

  • Patents Assigned to Yoshino Gypsum Co., Ltd. Justia

    20/12/2018· Justia Patents Patents and Patent Application Resources. Abstract: Behavior of a flow of foam ejected to a gypsum slurry can be stabilized, and a relatively large amount of foam can be homogeneously or uniformly dispersed in the slurry. A mixer has a mixing area for preparing gypsum slurry, a slurry delivery section for delivering the slurry from the mixing area, and a feeding port forОнлайн-запрос

  • GYPSUM SET ACCELERATOR AND METHOD OF Free

    This claims the benefit of United Stated provisional patent application No. 62/487,658, entitled GYPSUM SET ACCELERATOR AND METHOD OF PREPARING SAME, filed Apr. 20, 2017. FIELD OF THE INVENTION. The present invention relates to a method and a composition for accelerating the setting reaction of an aqueous calcined gypsum slurry to form gypsum-containing products, as well as aОнлайн-запрос

  • Apparatus and method for fractionating gypsum slurry and

    The invention claimed is: 1. A machine for manufacturing gypsum board with a gypsum core covered with a sheet of paper for gypsum board liner, comprising: a chute section having a slurry discharge port for feeding gypsum slurry for the gypsum core to a widthwise center part of a sheet of paper for gypsum board liner with a stable density and pressure; a single mixer having a housing and aОнлайн-запрос

  • US Patent Application for GYPSUM SLURRIES WITH

    05/09/2019· A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating unit or saltОнлайн-запрос

  • Method and apparatus for pressurized calcination of

    An example method for calcining gypsum includes injecting gypsum into a top portion of a pressurized reactor; injecting heated air, steam and a portion of a combustion gas flow from a burner into a bottom portion of the pressurized reactor to create a fluidized bed of gypsum within the reactor; heating the pressurized reactor to a temperature ranging from about 121 to about 149° C. (fromОнлайн-запрос

  • EA to scrap gypsum content guideline letsrecycle

    28/11/2008· The Environment Agency has decided to scrap guidelines which meant construction waste with a gypsum content of up to 10% did not have to be separated from other waste at landfill. It announced on Wednesday (November 26) that it had published new guidance entitled ‘Landfilling of gypsum waste including plasterboard', which means that companies will now be required to separateОнлайн-запрос

  • Apparatus for the thermal conversion of gypsum Rhone

    Vertical transport of the material and calcination in a fluidized bed are also known, through French Patent No. 1,338,126 and its Addition No. 87,866, but until now a high, gypsum-fed fluidized bed required a high rate of fluidization, causing substantial dispersions and necessitating high-capacity blowers; moreover, such a device suffers from the drawbacks of using a single homogeneousОнлайн-запрос

  • Foam gypsum composition Patent search, search

    SUBSTANCE: invention relates to foam gypsum materials used in manufacture of construction-destined heat insulation, light building parts (e.g. cores of layered wall panels), dry plaster, etc. Foam gypsum composition comprising, wt %: semiaquatic gypsum 39.4-51.4, quartz sand 0.6-20.4, foaming agent 0.1-0.7, and water (the balance) further contains orthophosphoric acid 0.6-1.3 and magnesium andОнлайн-запрос

  • Shipping container of scrap gypsum Free Patents Online

    25/08/1992· Having described the invention, it is desired to claim: 1. A shipping container for handling and transporting gypsum board scrap, said container being constructed of pieces of scrap gypsum board and comprising a bottom floor of a large piece of scrap gypsum board, a top closure piece of scrap gypsum board, said top and bottom pieces being held apart by four vertical side wallsОнлайн-запрос

  • Recycling of Gypsum Panels | ASTM Standardization News

    ASTM’s gypsum and related building materials and systems committee The intended application of the new standard will be to help the closed-loop recycling of gypsum panels, in which the gypsum derived from the scrap panels is used in new panel products,” says ASTM International member Michael Schmeida, director of code, standards, and research, Gypsum Association. According to SchmeidaОнлайн-запрос

  • METHOD FOR RECYCLING OF FLUORIC GYPSUM Patent

    Patent: Patent Russian Federation. Application: RU20080137817 on 2008-09-22. Publication: 2010-01-27. Abstract. FIELD: technological processes. ^ SUBSTANCE: invention is related to chemical industry and may be used in recycling of fluoric gypsum (acid fluoride) waste of hydrogen fluoride production. Method consists in the fact that fluoric gypsum is treated with dissolved solution ofОнлайн-запрос

  • Patent Gypsum industry news from Global Gypsum

    Gypsum industry events, news & research Global Gypsum. US: On 21 June 2011 United States Gypsum Co. was assigned a patent for 'Gypsum-containing product and method for producing same.'The inventors were named as Qiang Yu, Steven W Sucech, Brent E Groza, Raymond J Mlinac, Frederick T Jones and Paul J Henkels, all from the US.Онлайн-запрос

  • Method and apparatus for pressurized calcination of

    An example method for calcining gypsum includes injecting gypsum into a top portion of a pressurized reactor; injecting heated air, steam and a portion of a combustion gas flow from a burner into a bottom portion of the pressurized reactor to create a fluidized bed of gypsum within the reactor; heating the pressurized reactor to a temperature ranging from about 121 to about 149° C. (fromОнлайн-запрос

  • Analytics for US Patent No. 9739059, Gypsum panels

    Gypsum panels, sheathing systems, and methods of making and using the same are provided. A gypsum panel includes a gypsum core associated wiОнлайн-запрос

  • Gypsum Recycling Market Global Industry Analysis, Size,

    13/10/2020· Press release Transparency Market Research Gypsum Recycling Market Global Industry Analysis, Size, Share, Growth, Trends and Forecast 2017 2025 published on openPRОнлайн-запрос

  • Gypsum Recycling & Drywall Recycling: Monster Industrial

    22/08/2017· Most of this drywall is being used for construction, however, a large percentage will inevitably become scrap material that needs to be discarded properly. About 64 percent of drywall waste is generated from drywall construction and the number is growing. Start drywall recycling today! Drywall, also referred to as gypsum board, wallboard, plasterboard, gypboard or rock can produce a toxic gasОнлайн-запрос

  • Amazon : NEW Patent CD for Apparatus and method

    Amazon : NEW Patent CD for Apparatus and method for recycling gypsum wallboard : Other Products : Everything ElseОнлайн-запрос

  • Gypsum – Scrap Egypt

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