CN102041869A - Mixed gypsum wallboard - Google Patents

Mixed gypsum wallboard Download PDF

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Publication number
CN102041869A
CN102041869A CN2009100243411A CN200910024341A CN102041869A CN 102041869 A CN102041869 A CN 102041869A CN 2009100243411 A CN2009100243411 A CN 2009100243411A CN 200910024341 A CN200910024341 A CN 200910024341A CN 102041869 A CN102041869 A CN 102041869A
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wallboard
mixed
gypsum
gypsum wallboard
moulding
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CN2009100243411A
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CN102041869B (en
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孙凯
贺根良
房晓娟
赵红伟
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    • 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
    • C04B28/142—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 containing synthetic or waste calcium sulfate cements
    • C04B28/144—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 containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to a mixed gypsum wallboard which can not be applied to bearing wall. The mixed main materials of the wallboard include industrial byproduct desulfurized gypsum and phosphogypsm. The mixed auxiliary agents include fly ash, slag and three-in-one performance improver. The wallboard is prepared by the process of preparing materials, pulping and wallboard moulding. The invention overcomes the disadvantages of prior arts which using phosphogypsum or desulfurized gypsum independently, improves the strength of finished products, enhances the waterproof property of product wallboard, consequently, avoids the influence of extraneous usage environment factors. Furthermore, the invention has the advantages of stable and reliable comprehensive properties, low consumption, good quality indexes and low price.

Description

A kind of gypsum wallboard that is mixed
Technical field
Content of the present invention belongs to building material technical field, relates to the gypsum wallboard that a kind of non is used.
Background technology
Gypsum wallboard is a kind of traditional energy-saving wall material, can realize the comprehensive utilization of resources of various industry by-product gypsums and flyash.For example one produce per year 300,000 square metres can utilize about 20000 tons of all kinds of gypsum light cellular partition board project year, but about 3000 tons of year recycling flyash/slag.At present this area raw material of being used to produce gypsum class building materials mainly adopts the plaster of paris, desulfurized gesso of flue gas.The resource-constrained of the plaster of paris own, and desulfurated plaster is owing to be limited by more influence factor, apparent availability is limited, and its price raises gradually, also causes the cost of material of gypsum wallboard corresponding more and more higher thus.In order to reduce the cost of gypsum wallboard goods, this area also once more has the people to propose to utilize ardealite, desulfurated plaster to substitute the plaster of paris, and this also is considered to a reasonable raw material approach.
The waste residue of the sulfur acid calcium that ardealite produces when being manufacturing phosphoric acid such as synthetic washing power factory, phosphate fertilizer plant, its main component is exactly dihydrate gypsum (CaSO 42H 2O), content is about 64%～69%, remove to contain have an appointment 2%～5% phosphoric acid and about 1.5% fluorine in addition, and be the acid granular material of band.China is the annual ardealite that discharges 3,000 ten thousand tons in the production of agriculture phosphate fertilizer only, takies a large amount of soils and deposits, and can cause secondary environmental pollution.
Desulfurated plaster claims desulfurized gesso of flue gas again, is that fuel (coal, wet goods) burning back discharging waste gas carries out that desulfurization is handled and a kind of gypsum of obtaining.It is closely related to produce the quality of building materials and the calcium sulphate content in the gypsum and clean water content with desulfurated plaster as raw material, and sulfate dihydrate acid calcium accounts for 80%～97% in the desulfurated plaster, except that calcium sulfate and, also contain impurity such as iron oxide, alumina.The annual discharge value of domestic only power plant wet desulphurization gypsum is estimated about 1,000 ten thousand tons.
Ardealite and dephosphorization gypsum are industry by-product gypsum, and its main chemical compositions all is dihydrate gypsum (CaSO 42H 2O), content is up to 90%, and these industry by-product gypsums are mainly used in cement doping agent, building hollow brick, brushing gypsum powder etc. at present.Because the performance of the product of application ardealite or dephosphorization gypsum is extremely unstable separately, the phenomenon that causes the product moisture absorption, variable color and intensity to descend often takes place, and the popularization of this series products is used produced bigger negative effect.
Summary of the invention
The objective of the invention is to the problem that prior art exists is solved, a kind of gypsum wallboard that is mixed that utilizes industry byproduct desulfurated plaster, the production of the ardealite instead plaster of paris is provided.
It is a kind of goods that utilize desulfurated plaster, two kinds of gypsum raw materials mixing of ardealite and make by following manufacturing procedure that the gypsum wallboard that is mixed is provided for achieving the above object:
1, the batching of raw material: get ardealite and desulfurated plaster by weight 3～7: 7～3 proportioning cooperate, as the major ingredient that is mixed, get again the flyash that accounts for the major ingredient weight 0～25% that is mixed respectively, 0～35% granularity less than the three-in-one improvement in performance agent of the slag of 3mm and 0～3% as being mixed assistant agent, wherein said three-in-one improvement in performance agent is to be 25%～40%: 25%～40% by weight ratio: 25%～40% iron chloride (FeCl 3), ammonium chloride (NH 4Cl) and aluminium chloride (AlCl 3) preparation made by hybrid technique
2, slurrying: each above-mentioned component raw material and the water that accounts for total weight of material 23%～35% are sent in the strong mixer, stirred homogenize 1～5 minute, each component is evenly distributed, make slurry;
3, wallboard moulding: good slurry is sent into vertical molding machine natural coagulation moulding in groups will to stir homogenize; Solidify the gypsum wallboard plate after deburring, formed goods.
The present invention utilizes desulfurated plaster, the PH of two kinds of gypsum products of ardealite, the difference of micro ion, by adding three-in-one improvement in performance agent etc., the performance of gypsum wallboard is largely increased, and its good effect that has is as described below.
One, both are combined into raw material and produce building gypsum plaster and produce gypsum plank to utilize ardealite, desulfurated plaster, can overcome the shortcoming that independent use ardealite or desulfurated plaster are produced wallboard.Ardealite is acidic materials normally, and PH is usually 4～6.5, and desulfurated plaster is generally alkaline matter, after two kinds of gypsum cooperate, obtain neutralization on the soda acid degree, approaching with the plaster of paris, water-soluble phosphorus wherein and fluorine change into tricalcium phosphate, the calcirm-fluoride of insoluble form into; On Impurity Distribution, the use of desulfurated plaster can remedy ardealite impurity with respect to more characteristic; Can remedy mutually on the grain composition, reduce unit weight, the appearance of the stratification that prevents to emanate, and also time of setting is moderate, thus improved the intensity of finished product.
Two, ardealite and desulfurated plaster be mixed in conjunction with after, iron oxide wherein, alumina, be converted into the iron hydroxide and the aluminium hydroxide material of gelling, can significantly reduce the micropore and the pore of product, strengthened the waterproof water repelling property of product wallboard, the PH of mixed gypsum avoids extraneous environment for use factor affecting near neutral, the product combination property improves, and reliable and stable.
Three, adopt the industry byproduct gypsum to produce partition board, even industrial residue is utilized in a large number, saved the mineral resources of natural gypsum again, the cost of gypsum plank also reduces greatly.
Four, product natural coagulation moulding has the advantages that energy consumption is low, output is high.
Five, after two kinds of gypsum cooperate, except that product quality indicator well because cost of material declined to a great extent, thereby can significantly reduce the price of product.
The specific embodiment
Embodiment one
1, raw material takes by weighing:
Figure B2009100243411D0000031
Wherein: the weight ratio that is mixed with of iron chloride, ammonium chloride and aluminium chloride is 1: 1: 1 in the three-in-one improvement in performance agent;
2, slurrying:
Above-mentioned various raw materials are sent in the strong mixer, stirred homogenize 3～5 minutes, each component is evenly distributed;
3, wallboard moulding
Send stirring the good slurry of homogenize into vertical molding machine natural coagulation moulding in groups, the time is 5～23 minutes; Solidified gypsum wallboard through deburring, check, stacking, warehouse-in.Above-mentioned raw materials can be prepared the wallboard of two 3000 * 600 * 120mm, and this gypsum wallboard is through checking coefficient of softening: 0.85～0.95, and compressive strength: 4.5～5MPa, product index satisfies the requirement of " JG/T169-2005 " standard.
Embodiment two
1, raw material takes by weighing:
Figure B2009100243411D0000032
2, slurrying:
Above-mentioned various raw materials are sent in the strong mixer, stirred homogenize 3～5 minutes, each component is evenly distributed;
3, wallboard moulding
Send stirring the good slurry of homogenize into vertical molding machine natural coagulation moulding in groups, the time is 10～23 minutes; Solidified gypsum wallboard through deburring, check, stacking, warehouse-in.Above-mentioned raw materials can be prepared the wallboard of four 3000 * 600 * 120mm, and this gypsum wallboard is through checking coefficient of softening: 0.85～0.95, and compressive strength: 4.5～5MPa, product index satisfies the requirement of " JG/T169-2005 " standard.
Embodiment three
1, raw material takes by weighing:
Figure B2009100243411D0000041
Wherein: the weight ratio that is mixed with of iron chloride, ammonium chloride and aluminium chloride is 1: 1: 1 in the three-in-one improvement in performance agent;
2, slurrying:
Above-mentioned various raw materials are sent in the strong mixer, stirred homogenize 3～5 minutes, each component is evenly distributed;
3, wallboard moulding
Send stirring the good slurry of homogenize into vertical molding machine natural coagulation moulding in groups, the time is 10～25 minutes; Solidified gypsum wallboard through deburring, check, stacking, warehouse-in.Above-mentioned raw materials can be prepared the wallboard of five 3000 * 600 * 120mm, and this gypsum wallboard is through checking coefficient of softening: 0.85～0.95, and compressive strength: 4.5～5MPa, product index satisfies the requirement of " JG/T169-2005 " standard.

Claims (2)

1. gypsum wallboard that is mixed is characterized in that it is the goods of making by following manufacturing procedure:
1.1 the batching of raw material: get ardealite and desulfurated plaster by weight 3～7: 7～3 proportioning cooperate, as the major ingredient that is mixed, get again the flyash that accounts for the major ingredient weight 0～25% that is mixed respectively, 0～35% granularity less than the three-in-one improvement in performance agent of the slag of 3mm and 0～3% as being mixed assistant agent;
1.2 slurrying: each above-mentioned component raw material and the water that accounts for total weight of material 23%～35% are sent in the strong mixer, stirred homogenize 1～5 minute, each component is evenly distributed, make slurry;
1.3 wallboard moulding: good slurry is sent into vertical molding machine natural coagulation moulding in groups will to stir homogenize; Solidify the gypsum wallboard plate after deburring, formed goods.
2. the gypsum wallboard that is mixed according to claim 1 is characterized in that said three-in-one improvement in performance agent is is 25%～40%: 25%～40% by weight ratio: the preparation that 25%～40% iron chloride, ammonium chloride and aluminium chloride are made by hybrid technique.
CN200910024341.1A 2009-10-16 2009-10-16 Mixed gypsum wallboard Expired - Fee Related CN102041869B (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001039757A (en) * 1999-07-28 2001-02-13 Denki Kagaku Kogyo Kk Low environmental load type high strength concrete
JP2002070239A (en) * 2000-08-25 2002-03-08 Yoshino Gypsum Co Ltd Gypsum building material suitable for bearing wall
CN1648096A (en) * 2004-01-31 2005-08-03 刘兴 Method for processing building material using lead mine waste slag
CN1952319A (en) * 2006-11-16 2007-04-25 济南大学 Light wallboard of desulfurated gypsum
CN101138863A (en) * 2006-09-08 2008-03-12 方承仕 Method for producing gypsum building products by using expressing technique
CN101215919A (en) * 2008-01-17 2008-07-09 临沂华威石膏建材有限公司 Formaldehyde-removing antibiotic plaster board and method for making same
CN101244923A (en) * 2008-03-21 2008-08-20 长沙归一建材科技有限公司 High-strength water resistant extrusion forming gypsum base composite ecological wallboard
CN101265068A (en) * 2008-04-28 2008-09-17 长沙归一建材科技有限公司 Gelatinization material gypsum-cement and producing method thereof
CN101265069A (en) * 2008-04-29 2008-09-17 石宗利 High-strength water-resistant plastering gypsum and producing method thereof
CN101289310A (en) * 2008-03-24 2008-10-22 昆明理工大学 Low-temperature ceramic permeable bricks and production method thereof
CN101451358A (en) * 2008-12-30 2009-06-10 谢孟 Basement composite external wall

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001039757A (en) * 1999-07-28 2001-02-13 Denki Kagaku Kogyo Kk Low environmental load type high strength concrete
JP2002070239A (en) * 2000-08-25 2002-03-08 Yoshino Gypsum Co Ltd Gypsum building material suitable for bearing wall
CN1648096A (en) * 2004-01-31 2005-08-03 刘兴 Method for processing building material using lead mine waste slag
CN101138863A (en) * 2006-09-08 2008-03-12 方承仕 Method for producing gypsum building products by using expressing technique
CN1952319A (en) * 2006-11-16 2007-04-25 济南大学 Light wallboard of desulfurated gypsum
CN101215919A (en) * 2008-01-17 2008-07-09 临沂华威石膏建材有限公司 Formaldehyde-removing antibiotic plaster board and method for making same
CN101244923A (en) * 2008-03-21 2008-08-20 长沙归一建材科技有限公司 High-strength water resistant extrusion forming gypsum base composite ecological wallboard
CN101289310A (en) * 2008-03-24 2008-10-22 昆明理工大学 Low-temperature ceramic permeable bricks and production method thereof
CN101265068A (en) * 2008-04-28 2008-09-17 长沙归一建材科技有限公司 Gelatinization material gypsum-cement and producing method thereof
CN101265069A (en) * 2008-04-29 2008-09-17 石宗利 High-strength water-resistant plastering gypsum and producing method thereof
CN101451358A (en) * 2008-12-30 2009-06-10 谢孟 Basement composite external wall

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