WO2017179844A1 - Composition de plaque de plâtre, procédé de fabrication de plaque de plâtre et plaque de plâtre fabriquée à partir de celle-ci - Google Patents

Composition de plaque de plâtre, procédé de fabrication de plaque de plâtre et plaque de plâtre fabriquée à partir de celle-ci Download PDF

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Publication number
WO2017179844A1
WO2017179844A1 PCT/KR2017/003640 KR2017003640W WO2017179844A1 WO 2017179844 A1 WO2017179844 A1 WO 2017179844A1 KR 2017003640 W KR2017003640 W KR 2017003640W WO 2017179844 A1 WO2017179844 A1 WO 2017179844A1
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WO
WIPO (PCT)
Prior art keywords
gypsum board
weight
gypsum
fly ash
filler
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PCT/KR2017/003640
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English (en)
Korean (ko)
Inventor
홍정용
최종헌
Original Assignee
유에스지 보랄 빌딩 프로덕츠 에스디엔. 비에이치디.
한국유에스지보랄 주식회사
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Application filed by 유에스지 보랄 빌딩 프로덕츠 에스디엔. 비에이치디., 한국유에스지보랄 주식회사 filed Critical 유에스지 보랄 빌딩 프로덕츠 에스디엔. 비에이치디.
Publication of WO2017179844A1 publication Critical patent/WO2017179844A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • C04B2111/0062—Gypsum-paper board like materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to a gypsum board composition, a gypsum board manufacturing method, and a gypsum board manufactured therefrom, and more specifically, using a fly ash (fill ash) as a filler in a general gypsum board, the compressive strength of the gypsum board
  • the present invention relates to a gypsum board composition, a gypsum board manufacturing method, and a gypsum board manufactured therefrom, which can reduce raw material cost by the difference of reinforcing, improving sag and replacing existing gypsum usage with fly ash.
  • gypsum board In general, gypsum board is mixed with fiber, vermiculite, etc. in plaster, and if necessary, foaming agent, hardening agent, etc. is added to it and then poured into empty sheet between two sheets. It is used to prevent the flames from propagating to the main structure inside the adjacent compartment or gypsum board.
  • Republic of Korea Patent Publication No. 10-2005-0041090 discloses a technique for manufacturing a lightweight gypsum board and sandwich panel.
  • a gypsum board using a material such as pulp, porous minerals, inorganic fibers, inorganic binders, it is possible to manufacture a sandwich panel of environmentally friendly and excellent performance in heat insulation and fire resistance.
  • fly ash is a particulate matter collected by a dust collector of a pulverized coal combustion boiler among coal ashes generated from a coal-fired power plant and the like, and is close to a spherical shape, and its main component is composed of SiO 2 , Al 2 O 3 , glass, and the like.
  • fly ash is used commercially, especially in the cement field, but is used in some specialty boards in gypsum board manufacturing, but not in general gypsum board.
  • the present invention has been made to meet the above requirements, the technical problem to be solved by the present invention, while using a fly ash as a filler on a general gypsum board, while improving the compressive strength of the gypsum board and improve the deflection It is to provide a gypsum board composition, a gypsum board manufacturing method, and a gypsum board manufactured therefrom which can reduce raw material cost for the use of calcined gypsum as much as fly ash.
  • One embodiment of the present invention for achieving the above object is a composition of gypsum board produced from a mixture of plaster and filler, wherein the mixture is 90 to 99 weight of plaster as a main material with respect to 100% by weight of the mixture as a whole %, And 1 to 10% by weight of fly ash as a filler.
  • Another embodiment of the present invention for achieving the above object is a method for producing a gypsum board by adding a hardening agent, water, foaming agent and subsidiary materials to the gypsum mixture mixed with the gypsum and filler to form a gypsum slurry and to mold and harden the gypsum slurry
  • a slurry blending step of blending a slurry by adding a curing agent, water, a blowing agent, and at least one component selected from clay and starch to the mixture obtained in the raw material mixing step; Continuously spread the lower frame made of gypsum board paper and continuously fill the slurry with the slurry obtained in the slurry mixing process (b) to cover the top with another gy
  • Molding and curing step of curing while running on the molding belt A primary cutting process of primaryly cutting the plasterboard molding cured in the molding and curing process into a length that can be accommodated in the dryer at the end of the molding belt; It is a gypsum board manufacturing method comprising a; drying step of drying the first cut cut in the first cutting process through a dryer.
  • the gypsum board manufacturing method of the present invention may be implemented in another embodiment, further comprising; a secondary cutting and stacking step of cutting the first cut dried in the drying step to the product length and accumulates to a specified number of sheets.
  • Another embodiment of the present invention for achieving the above object is a gypsum board made of the gypsum board composition, and a gypsum board manufactured by the gypsum board manufacturing method.
  • the fly ash obtained from the raw gypsum obtained through the calcination process is mixed with a fly ash as a filler, it is possible to enhance the compressive strength of the gypsum board and improve the sag property while manufacturing the gypsum board.
  • FIG. 1 is a cross-sectional view of a gypsum board specimen prepared from a gypsum board composition according to an embodiment of the present invention.
  • Figure 2 is a flow chart schematically illustrating a gypsum board manufacturing process using a gypsum board composition according to the present invention.
  • FIG. 3 is a schematic configuration diagram of a gypsum board manufacturing apparatus applied to the gypsum board manufacturing process according to the present invention.
  • 4A and 4B are compressive strength graphs and deflection graphs illustrating measured values of the specimens of Examples 1 and 2 and Comparative Examples 1 and 2, respectively.
  • the gypsum board composition of the present invention is 90 to 99% by weight of gypsum hemihydrate as a main material and 1 to 10% by weight of fly ash as a filler, based on 100% by weight of the mixture of calcined gypsum and filler. It is comprised by%, and may contain a hardening
  • the strength of the gypsum board may not be adhered to, and the amount of the plasterboard may not be adhered.
  • the content when the content is 5 to 8% by weight, it may be a desirable quantity that can have a great effect on quality improvement and cost reduction.
  • the fly ash When the fly ash is contained in the gypsum board composition, there is no significant change in the overall gypsum board manufacturing process, and only the input equipment that can be added according to the content is required. In addition, manufacturing cost can be reduced due to the difference between the production cost of plaster and the purchase price of fly ash, and the production cost reduction increases proportionally according to the production volume.
  • Plastered gypsum (or hemihydrate gypsum) is obtained from a raw gypsum obtained through a calcination process.
  • Fly ash is melted when the coal is burned to a high temperature of about 1,400 ⁇ 1,500 °C in coal-fired power plant, and the ash is melted rapidly along with the combustion gas of high temperature to form a spherical shape by the surface tension As the powder, those collected using an electric or mechanical dust collector are used.
  • the main component of fly ash is composed of silica (SiO 2 ), alumina (Al 2 O 3 ), iron dioxide (Fe 2 0 3 ), magnesium oxide (MgO), etc.
  • Components such as phosphorus (P), cobalt (Co), molybdenum (Mo), boron (B), and magnesium (Mg) may be included.
  • the fly ash contained in the gypsum board composition of the present invention is used in the following compartment as shown in Table 1, and as can be seen in the table, based on 100% by weight of the fly ash, 30 to 60% by weight of silica; 10 to 30 weight percent of alumina; 5 to 15 weight percent of iron dioxide; Calcium oxide 1-10 wt%; And 1 to 10% by weight of magnesium oxide; as a constituent, one having a powder degree (cm 2 / g) of 3000 or more, a density (g / cm 3) of 1.95 or more, and a loss of ignition (%) of less than 5.0.
  • Fly ash is a glass sphere containing some carbon with some crystalline materials, and is divided into solid particles containing several layers of spherical particles and hollow porous particles filled with carbon dioxide and nitrogen gas inside. Therefore, such a fly ash increases the fluidity of the slurry by the ball bearing action when mixed in the gypsum slurry, and can act as a factor having a good effect on the gypsum material properties by filling the gypsum slurry pores.
  • the amount of unburned carbon present in the fly ash depends on the quality of the fly ash and the combustion conditions.However, the amount of unburned carbon is generally 2-10% and is often around 5%. The fly ash becomes gray from cement color. The amount of unburned carbon in the fly ash is a problem, especially in the cement or concrete admixture portion. In general, unburned carbon adsorbs AE agent in concrete, so when using fly ash having a large amount of unburned carbon, more AE agent is required to secure the required air volume, and when the fly ash mixing rate is the same, The large loss of ash results in a decrease in strength, so the KS standard (KS L 5405) specifies a limit of 5% of fly ash loss. Therefore, fly ash containing a lot of unburned carbon has the drawback of blackening the appearance of concrete and reducing the effect of admixture, and therefore, low ash loss value for cement or concrete admixture is required.
  • Powder level is a very important property that affects workability. In general, when the powder is high, the particles are fine, and thus the watertightness can be improved by filling the voids between the aggregates.
  • There are two methods for measuring the powder level the sieve method and the specific surface area measurement method by the Blaine permeation method. In the case of the sieve, it is generally measured by a 45 ⁇ m (NO325) sieve. In KS L 5405, the degree of powder is regulated to 3,000 cm2 / g or more, and ASTM C618 regulates the residual amount of 45 ⁇ m sieve (less than 34%).
  • the 45 ⁇ m sieve residual (less than 25%) and specific surface area 2,400 It regulates simultaneously in cm ⁇ 2> / g or more.
  • the powder density of the fly ash obtained in the electrostatic precipitator is generally in the range of 3,000-4,500 cm 2 / g.
  • the degree of powderiness increases as the value of the specific surface area is large or the amount of 45 ⁇ m remaining body is small, and the workability is improved as the powderiness is higher.
  • the gypsum board composition of the present invention can stably maintain the product core strength at a level of 3.0 Mpa or more, and improve the sag by using fly ash as a filler mixed with the calcined gypsum mixture.
  • FIG. 1 is a cross-sectional view of a gypsum board specimen prepared from a gypsum board composition according to an embodiment of the present invention
  • Figure 2 is a flow chart schematically illustrating a gypsum board manufacturing process using a gypsum board composition according to the present invention
  • Figure 3 Is a schematic configuration diagram of a gypsum board manufacturing apparatus applied to the gypsum board manufacturing process according to the present invention
  • the gypsum board manufacturing method of the present invention is a raw material mixing step (a), slurry mixing step (b) ), Forming and curing process (c), the first cutting step (d), it may be configured to include a drying step (e), the gypsum board manufacturing method of the present invention is a secondary cutting and loading step (f) It may be configured to include more.
  • the gypsum board manufacturing method of the present invention can be applied at the time of manufacturing gypsum board used in building materials.
  • the raw material mixing step (a) is 90 to 99% by weight of the calcined gypsum obtained through the firing process from the raw material gypsum as the main material and 1 to 10 weight of the fly ash as the filler, based on 100% by weight of the mixture of the calcined gypsum 12a and the filler. It is a process of mixing%.
  • the fly ash 12b used as a filler in this raw material mixing process (a) is 30 to 60 weight% of silica with respect to 100 weight% of fly ash; 10 to 30% by weight of alumina; 5 to 15 weight percent of iron dioxide; Calcium oxide 1 to 10% by weight; And 1 to 10% by weight of magnesium oxide.
  • the fly ash used as a filler in such a raw material mixing process uses the thing of the powder degree (cm2 / g) 3000 or more, the loss on ignition loss (%) 5.0, and the density (g / cm3) 1.95 or more.
  • the slurry blending step (b) is a step of mixing the slurry 12 by adding a curing agent to the mixture obtained in the raw material mixing step (a) and adding at least one member selected from water, a blowing agent, clay and starch. .
  • the primary cutting step (d) is a step of primary cutting the gypsum board molding 15 cured in the molding and curing step (c) into a length that can be accommodated in the dryer 16 at the end of the molding belt.
  • the drying step (e) is a step of putting the first cut 15a cut in the first cutting step into a drier and drying it.
  • the secondary cutting and dropping step (f) is a step of secondary cutting the first cut dried in the drying step into a product length for carrying out and packing, and dropping the second cut 15b to a specified number of sheets.
  • the mixture is mixed with the contents of calcined gypsum and fly ash, and after mixing the conventional amount of the curing agent in each mixture, and then adding the usual amount of water, foaming agent and other materials to each gypsum slurry After spreading the lower frame made of gypsum board base material continuously, fill each gypsum slurry, cover the upper part with other gypsum board base continuously, shape the gypsum board, cut it and put it in the dryer at the same temperature.
  • the plasterboard specimens of Examples 1 and 2 and Comparative Examples 1 and 2 were prepared by drying for the same time, and the core compressive strength (mm) and deflection (mm) of the specimens were measured.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

La présente invention concerne une composition de plaque de plâtre, un procédé de fabrication d'une plaque de plâtre et une plaque de plâtre fabriquée à partir de celle-ci et le but de la présente invention est d'utiliser des cendres volantes en tant que charge pour une plaque de plâtre commune. A cet effet, la présente invention concerne une composition d'une plaque de plâtre produite à partir d'un mélange de gypse calciné et d'une charge, le mélange comprenant : 90 à 99 % en poids de gypse calciné en tant que matériau principal et 1 à 10 % en poids de cendres volantes en tant que charge ; un procédé de fabrication d'une plaque de plâtre utilisant la composition ; et une plaque de plâtre fabriquée à partir de celle-ci. Ainsi, il est possible d'améliorer la résistance à la compression de la plaque de plâtre et d'améliorer sa propriété d'affaissement correspondante, mais également de réduire le coût des matières premières par une quantité de gypse calciné qui est remplacée par des cendres volantes.
PCT/KR2017/003640 2016-04-11 2017-04-03 Composition de plaque de plâtre, procédé de fabrication de plaque de plâtre et plaque de plâtre fabriquée à partir de celle-ci WO2017179844A1 (fr)

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KR1020160044039A KR20170116380A (ko) 2016-04-11 2016-04-11 석고보드 조성물, 석고보드 제조방법, 및 이로부터 제조된 석고보드
KR10-2016-0044039 2016-04-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110395961A (zh) * 2019-08-12 2019-11-01 贵州好百年住宅工业有限公司 一种用石膏制成的ecp板及其制备方法
US11339572B1 (en) 2017-01-23 2022-05-24 Gold Bond Building Products, Llc Method of manufacturing gypsum board with improved fire

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000059698A1 (fr) * 1999-03-30 2000-10-12 Building Materials Technology Laboratories, K.K. Plaque de platre, procede de production de plaque de platre et appareil de production de plaque de platre
KR20020077991A (ko) * 2001-04-03 2002-10-18 아암스트롱워어르드인더트의리이즈인코포레이팃드 내구 음향 패널 사용을 위한 무기물 발포 구조물 생산용방법 및 장치
KR20120023221A (ko) * 2010-09-01 2012-03-13 주식회사 케이씨씨 조습 및 유해물질 저감 기능이 있는 석고보드
KR20120025120A (ko) * 2010-09-07 2012-03-15 한국세라믹기술원 조습 석고보드용 조성물
KR20140004686A (ko) * 2010-12-30 2014-01-13 유나이티드 스테이츠 집섬 컴파니 비산회 기반 경량 골재의 현장 제조방법
KR101373197B1 (ko) * 2006-03-30 2014-03-12 보랄 집생 아시아 에스디엔. 비에이치디. 경량 플라스터보드 및 그 제조에 사용되는 플라스터 슬러리조성물

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000059698A1 (fr) * 1999-03-30 2000-10-12 Building Materials Technology Laboratories, K.K. Plaque de platre, procede de production de plaque de platre et appareil de production de plaque de platre
KR20020077991A (ko) * 2001-04-03 2002-10-18 아암스트롱워어르드인더트의리이즈인코포레이팃드 내구 음향 패널 사용을 위한 무기물 발포 구조물 생산용방법 및 장치
KR101373197B1 (ko) * 2006-03-30 2014-03-12 보랄 집생 아시아 에스디엔. 비에이치디. 경량 플라스터보드 및 그 제조에 사용되는 플라스터 슬러리조성물
KR20120023221A (ko) * 2010-09-01 2012-03-13 주식회사 케이씨씨 조습 및 유해물질 저감 기능이 있는 석고보드
KR20120025120A (ko) * 2010-09-07 2012-03-15 한국세라믹기술원 조습 석고보드용 조성물
KR20140004686A (ko) * 2010-12-30 2014-01-13 유나이티드 스테이츠 집섬 컴파니 비산회 기반 경량 골재의 현장 제조방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11339572B1 (en) 2017-01-23 2022-05-24 Gold Bond Building Products, Llc Method of manufacturing gypsum board with improved fire
US12031328B2 (en) 2017-01-23 2024-07-09 Gold Bond Building Products, Llc Method of manufacturing gypsum board with improved fire resistance
CN110395961A (zh) * 2019-08-12 2019-11-01 贵州好百年住宅工业有限公司 一种用石膏制成的ecp板及其制备方法

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