CN102180647A - Desulfurized building gypsum water-proof building block - Google Patents

Desulfurized building gypsum water-proof building block Download PDF

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Publication number
CN102180647A
CN102180647A CN2011100357886A CN201110035788A CN102180647A CN 102180647 A CN102180647 A CN 102180647A CN 2011100357886 A CN2011100357886 A CN 2011100357886A CN 201110035788 A CN201110035788 A CN 201110035788A CN 102180647 A CN102180647 A CN 102180647A
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Prior art keywords
building
building block
gypsum
desulfurized
building gypsum
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CN2011100357886A
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赵俊梅
张金山
李侠
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Inner Mongolia University of Science and Technology
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Inner Mongolia University of Science and Technology
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Priority to CN2011100357886A priority Critical patent/CN102180647A/en
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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)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a desulfurized building gypsum water-proof building block, belonging to the technical field of comprehensive utilization of building materials and solid industrial wastes. The building block comprises the following raw materials in percentage by mass: 30-94 percent of desulfurized building gypsum, 0-50 percent of silicon-calcium slag and 6-20 percent of low-alkalinity sulphate aluminum cement. A method for preparing an improved desulfurized building gypsum water-proof building block mainly comprises the following steps of: preparing for materials with desulfurized building gypsum and low-alkalinity sulphate aluminum cement as byproducts obtained after smoke discharged from a coal-burning thermal power plant is desulfurized and silicon-calcium slag as residue obtained after alumina is extracted from high-aluminum pulverized fuel ash as raw materials according to a formula; adding water and stirring to obtain slurry; molding by casting; demolding; and drying or naturally drying. In the invention, the low-alkalinity sulphate aluminum cement and the silicon-calcium slag are doped into the desulfurized building gypsum, so that the water resistance of a desulfurized gypsum building block is greatly enhanced, and very high using value is achieved.

Description

A kind of desulphurization building gypsum waterproof building block
Technical field
The present invention relates to a kind of desulphurization building gypsum waterproof building block, belong to material of construction and solid trade waste comprehensive utilization technique field.
Background technology
Gypsum block is to adopt the plaster of paris or chemical gypsum frying to become semi-hydrated gypsum, adds water and stirs, casting and the dry light-weight building plastering of making.Because gypsum block has characteristics such as lightweight, insulation, heat insulation, sound insulation, easy construction, be subjected to people's common attention and like.But gypsum block is owing to self air-setting, and the product coefficient of softening has greatly limited its widespread use aspect the construction work body of wall generally below 0.5, also is the great difficult problem that manufacturing enterprise needs to be resolved hurrily.Chinese patent literature CN101337376A, CN101892720.A, CN1425630.A disclose plaster of Paris, desulphurization building gypsum prepares the method for waterproof, moistureproof gypsum block as base-material, but above-mentioned technology ubiquity component is many, operation easier is big, shortcomings such as cost height.
Summary of the invention:
The object of the present invention is to provide a kind of water resistance that can increase substantially building block, widened the use range of gypsum block, and raw materials used 90% be the solid trade waste, and environmental benefit is a kind of desulphurization building gypsum waterproof building block and the preparation method of highly significant also.
Technical solution:
The mass percent of the material composition that the present invention contains is: desulphurization building gypsum 30%～94%, silico-calcium slag 0%～50%, low-alkalinity sulphoaluminate cement 6%～20%.
The desulphurization building gypsum major ingredient comprises by weight: CaSO 41/2H 2O 〉=80%.
Silico-calcium slag major ingredient comprises by weight: SiO 2: 22%～24%, CaO:55%～58%, aL 2O 3: Fe 3%～5%, 2O 3＜1.8%, K 2O＜1.5%, Na 2O＜0.5%.
A kind of preparation method of desulphurization building gypsum waterproof building block, method steps is as follows: be 0.7～0.8 to measure water consumption and add in the Stirring device by water cement ratio earlier, with the desulphurization building gypsum 30%～94% that measures, silico-calcium slag 0%～50%, low-alkalinity sulphoaluminate cement 6%～20% adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.
The present invention mainly is the byproduct desulphurization building gypsum that utilizes after the stack desulfurization of coal-fired thermal power factory, mix the residue-silico-calcium slag after low-alkalinity sulphoaluminate cement and aluminous fly-ash extract aluminum oxide, increase substantially the water resistance of building block, widened the use range of gypsum block, and raw materials used 90% be the solid trade waste, and environmental benefit is highly significant also.
Raw-material selection
The chemical ingredients of desulfurated plaster and silico-calcium slag sees Table 1
Figure BSA00000432317200021
The physical properties of desulphurization building gypsum: fineness 200 mesh screen residues 1.8%, presetting period: 7min, final setting time: 14min folding strength: 4.0MPa, ultimate compression strength: 10.0MPa.
Low-alkalinity sulphoaluminate cement physico-mechanical properties: specific surface area: 410m 2/ kg, presetting period: 20min, final setting time: 130min, folding strength: 1d:4.8MPa, ultimate compression strength: 42.0MPa; 7d: folding strength 7.2MPa, ultimate compression strength: 55.2MPa;
Interventions Requested Desulphurization building gypsum building block of the present invention Common desulphurization building gypsum building block
Breaking load, KN 5.5 3.0
Folding strength, MPa 4.8 3.2
Ultimate compression strength, MPa 14.0 10.0
Apparent density, kg/m 3 920 1050
Coefficient of softening 0.86 0.5
Water-intake rate, % 6.0 9.2
By table 2 as seen, desulphurization building gypsum building block of the present invention still is that coefficient of softening all is significantly increased than common desulphurization building gypsum building block from intensity, and technology is simple, and is easy to operate, has good advantages for development.
Embodiment
Embodiment 1
The prescription of desulphurization building gypsum waterproof building block of the present invention is (mass percent)
Desulphurization building gypsum 60%, silico-calcium slag 30%, low-alkalinity sulphoaluminate cement: 10%.
Production method: be 0.7～0.8 to measure water consumption and add in the Stirring device earlier by water cement ratio, with the 30% silico-calcium slag that measures, 10% low-alkalinity sulphoaluminate cement, 60% desulphurization building gypsum adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.
Embodiment 2
The prescription of desulphurization building gypsum waterproof building block is (mass percent)
Desulphurization building gypsum 70%, silico-calcium slag 20%, low-alkalinity sulphoaluminate cement: 10%.
Production method: be 0.7～0.8 to measure water consumption and add in the Stirring device earlier by water cement ratio, with the 20% silico-calcium slag that measures, 10% low-alkalinity sulphoaluminate cement, 70% desulphurization building gypsum adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.
Embodiment 3
The prescription of desulphurization building gypsum waterproof building block is (mass percent)
Desulphurization building gypsum 60%, silico-calcium slag 30%, low-alkalinity sulphoaluminate cement: 8%.
Production method: be 0.7～0.8 to measure water consumption and add in the Stirring device earlier by water cement ratio, with the 30% silico-calcium slag that measures, 8% low-alkalinity sulphoaluminate cement, 60% desulphurization building gypsum adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.
Embodiment 4
The prescription of desulphurization building gypsum waterproof building block is (mass percent)
Desulphurization building gypsum 90%, low-alkalinity sulphoaluminate cement: 10%.
Production method: be 0.7～0.8 to measure water consumption and add in the Stirring device earlier by water cement ratio, with 10% low-alkalinity sulphoaluminate cement that measures, 90% desulphurization building gypsum adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.

Claims (4)

1. a desulphurization building gypsum waterproof building block is characterized in that the mass percent of the material composition that it contains is: desulphurization building gypsum 30%～94%, silico-calcium slag 0%～50%, low-alkalinity sulphoaluminate cement 6%～20%.
2. a kind of desulphurization building gypsum waterproof building block according to claim 1, it is characterized in that: the desulphurization building gypsum major ingredient comprises by weight: CaSO 41/2H 2O 〉=80%.
3. a kind of desulphurization building gypsum waterproof building block according to claim 1 is characterized in that: silico-calcium slag major ingredient comprises by weight: SiO 2: 22%～24%, CaO:55%～58%, AL 2O 3: Fe 3%～5%, 2O 3＜1.8%, K 2O＜1.5%, Na 2O＜0.5%.
4. the preparation method of a desulphurization building gypsum waterproof building block, it is characterized in that earlier by water cement ratio being 0.7～0.8 to measure water consumption and add in the Stirring device, with the desulphurization building gypsum 30%～94% that measures, silico-calcium slag 0%～50%, low-alkalinity sulphoaluminate cement 6%～20% adds stirring in the stirrer successively, stirred 1～2 minute, the slip of mixing is poured in the forming mould, after solidifying 2～3 minutes, starting hydraulic liftout apparatus ejects building block from the shaper bottom from mould, building block is put on drying cart for 3 centimetres by spacing, move to the air-dry Zao Kiln of continous way Re inner drying by track again, or be put in the airing field and adopt the seasoning mode to carry out drying, be stranded at last and prick packing.
CN2011100357886A 2011-01-28 2011-01-28 Desulfurized building gypsum water-proof building block Pending CN102180647A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103319118A (en) * 2013-05-21 2013-09-25 内蒙古科技大学 Method for making heat insulation plates through utilizing industrial solid wastes
CN104761231A (en) * 2015-03-27 2015-07-08 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Lightweight thermal insulation wall material and preparation method thereof
CN105254265A (en) * 2015-09-29 2016-01-20 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Calcium silicon slag autoclaved brick and manufacturing method thereof
CN115849807A (en) * 2022-11-25 2023-03-28 金松果新材料科技有限公司 Light heat-insulating modular wall material and preparation method thereof
CN116553894A (en) * 2023-05-06 2023-08-08 山东大学 High-precision light-weight gypsum block and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490160A1 (en) * 1990-12-10 1992-06-17 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Process for manufacturing gypsum building materials
DE19527966A1 (en) * 1995-07-18 1997-01-23 Werec Gmbh Berlin Wertstoff Re High strength composite material for construction of wall panels and moulded bodies
CN1425630A (en) * 2003-01-14 2003-06-25 新疆维吾尔自治区建筑材料研究所 Water-proof gypsum block
CN1502582A (en) * 2002-11-26 2004-06-09 北京北玛兴和科技发展中心 Method for preparing moisture-resisting gypsum block
CN101337376A (en) * 2007-07-04 2009-01-07 北京建筑材料科学研究总院有限公司 Preparation method of desulfurization gypsum building blocks
CN101892720A (en) * 2009-05-19 2010-11-24 北京建筑材料科学研究总院有限公司 Preparation method for damp-proof desulfurization gypsum blocks

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490160A1 (en) * 1990-12-10 1992-06-17 SICOWA Verfahrenstechnik für Baustoffe GmbH & Co. KG Process for manufacturing gypsum building materials
DE19527966A1 (en) * 1995-07-18 1997-01-23 Werec Gmbh Berlin Wertstoff Re High strength composite material for construction of wall panels and moulded bodies
CN1502582A (en) * 2002-11-26 2004-06-09 北京北玛兴和科技发展中心 Method for preparing moisture-resisting gypsum block
CN1425630A (en) * 2003-01-14 2003-06-25 新疆维吾尔自治区建筑材料研究所 Water-proof gypsum block
CN101337376A (en) * 2007-07-04 2009-01-07 北京建筑材料科学研究总院有限公司 Preparation method of desulfurization gypsum building blocks
CN101892720A (en) * 2009-05-19 2010-11-24 北京建筑材料科学研究总院有限公司 Preparation method for damp-proof desulfurization gypsum blocks

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103319118A (en) * 2013-05-21 2013-09-25 内蒙古科技大学 Method for making heat insulation plates through utilizing industrial solid wastes
CN103319118B (en) * 2013-05-21 2014-11-12 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Method for making heat insulation plates through utilizing industrial solid wastes
CN104761231A (en) * 2015-03-27 2015-07-08 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Lightweight thermal insulation wall material and preparation method thereof
CN105254265A (en) * 2015-09-29 2016-01-20 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Calcium silicon slag autoclaved brick and manufacturing method thereof
CN105254265B (en) * 2015-09-29 2017-12-19 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 Silico-calcium slag autoclaved brick and its manufacture method
CN115849807A (en) * 2022-11-25 2023-03-28 金松果新材料科技有限公司 Light heat-insulating modular wall material and preparation method thereof
CN116553894A (en) * 2023-05-06 2023-08-08 山东大学 High-precision light-weight gypsum block and preparation method thereof

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Application publication date: 20110914