CN114853431B - Flame-retardant solid waste base cement shaving board and preparation method thereof - Google Patents

Flame-retardant solid waste base cement shaving board and preparation method thereof Download PDF

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CN114853431B
CN114853431B CN202210631922.7A CN202210631922A CN114853431B CN 114853431 B CN114853431 B CN 114853431B CN 202210631922 A CN202210631922 A CN 202210631922A CN 114853431 B CN114853431 B CN 114853431B
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cement
quick
flame
solid waste
retardant solid
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CN114853431A (en
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张�浩
王倩
龙红明
吴胜华
朱子康
季益龙
王艳茹
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Anhui University of Technology AHUT
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Anhui University of Technology AHUT
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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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous 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
    • 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
    • C04B18/12—Waste materials; Refuse from quarries, mining or the like
    • 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
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • 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
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/26—Wood, e.g. sawdust, wood shavings
    • 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
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08—Acids or salts thereof
    • C04B22/16—Acids or salts thereof containing phosphorus in the anion, e.g. phosphates
    • C04B22/165—Acids
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/003—Phosphorus-containing compounds
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • 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

Abstract

The invention provides a flame-retardant solid waste cement particle board and a preparation method thereof, belonging to the field of cement particle boards. The cement shaving board is prepared from wood shavings, an acidic phosphorus-containing silane modifier, electric furnace ash, high-silicon bauxite ultrafine powder, quick-setting and quick-hardening cement, ordinary portland cement and other raw materials. The invention solves the problems that the flame retardant property of the cement shaving board needs to be improved, the conventional flame retardant has high price and can not integrate flame retardance and smoke abatement, and the electric furnace dust and the high-silicon bauxite need to develop a new application field; the flame-retardant solid waste cement particle board is prepared from wood shavings, an acidic phosphorus-containing silane modifier, electric furnace ash, high-silicon bauxite ultrafine powder, quick-setting and quick-hardening cement and ordinary portland cement, so that the large-scale and high-valued application of solid waste is realized, the cement particle board is endowed with flame retardant property, the purposes of reducing carbon and reducing carbon are realized, and the industrial development requirements of energy conservation, environmental protection and circular economy at present are met.

Description

Flame-retardant solid waste base cement shaving board and preparation method thereof
Technical Field
The invention belongs to the field of cement particle boards, and particularly relates to a flame-retardant solid waste cement particle board and a preparation method thereof.
Background
Cement particle boards have been used in large quantities abroad as interior and exterior wall boards, partition boards, floors, sound barrier materials on both sides of railways or highways, and the application thereof in China is gradually expanding at present. The board is generally prepared from cement, wood shavings and various additives, and the cement shaving board used for inner and outer wallboards, partition boards and floors not only requires high strength and excellent water resistance, sound insulation and heat preservation performance, but also requires improvement of safety performance.
The electric furnace dust is the dust collected by the electric furnace smoke dust through the collector, the flue and finally the bag type dust collector when the electric furnace is used for steelmaking, and the main chemical component of the electric furnace dust is Fe/Fe 2 O 3 (ii) a High silicon bauxite is a silicon to aluminum ratio (Al) 2 O 3 /SiO 2 ) Lower bauxite, due to its lower alumina content, is acidic, resulting in high production costs and poor product quality for desiliconizing refined alumina, and therefore is discarded in large quantities. If the flame-retardant solid waste base cement particle board can be prepared by using the electric furnace dust, the high-silicon bauxite, the quick-setting and quick-hardening cement and the common portland cement, the flame retardant property and the mechanical property of the cement particle board are improved, the purposes of reducing carbon and reducing carbon are realized, and the industrial development requirements of energy conservation, environmental protection and circular economy at present are met.
Disclosure of Invention
The flame retardant cement particle board aims to solve the problems that the flame retardant property of a cement particle board needs to be improved, the conventional flame retardant is high in price and cannot integrate flame retardance and smoke abatement, and the electric furnace dust and the high-silicon bauxite need to develop a new application field. The invention relates to a flame-retardant solid waste cement shaving board prepared from wood shavings, an acidic phosphorus-containing silane modifier, electric furnace dust, high-silicon bauxite ultrafine powder, quick-setting and quick-hardening cement and ordinary portland cement, and aims to solve the problems.
In order to solve the above technical problems, the present invention is realized by the following technical solutions.
The invention provides a flame-retardant solid waste cement shaving board, which comprises the following raw materials in percentage by weight:
Figure BDA0003675124300000021
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle diameter is 3 to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 2-4, the grain diameter is 10-15 μm, and the shape is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite ultrafine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M = 0.14-0.17.
The invention also provides a preparation method of the flame-retardant solid waste cement particle board, which comprises the following steps:
(1) And mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 180-240 min by using a constant-temperature magnetic stirrer with the stirring speed of 200-500 r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50 percent of the total mass of the electric furnace ash, the high-silica bauxite ultrafine powder and the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving into a plate blank, putting the plate blank stack into a cold press by using a forklift, and pressurizing and maintaining the pressure for 4-6 MPa for 4-8 h to obtain the flame-retardant solid waste cement shaving board blank.
(3) Curing the fire-retardant solid waste cement shaving board blank at the temperature of 30-40 ℃ and the relative humidity of 70-90% for 8-12 h to obtain the fire-retardant solid waste cement shaving board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 2-4 atmospheric pressures, and the steam curing time is 8-16 h; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
The innovation points of the invention are as follows:
(1) The acidic phosphorus-containing silane modifier contains phosphoric acid, phosphate ester and a silane coupling agent, and the acidity of the phosphoric acid is utilized to promote the electric furnace ash and the high-silicon bauxite superfine powder to form a porous structure, so that the adsorption of the phosphate ester and the silane coupling agent on the surface is facilitated; adsorbing phosphate on porous surfaces of electric furnace ash and high-silicon bauxite superfine powder to respectively form a Si-P-Fe smoke abatement system and a Si-P-A1 flame retardant system; the silane coupling agent is adsorbed on the porous surfaces of the electric furnace ash and the high-silicon bauxite superfine powder, so that the dispersibility of the functional filler in the cement shaving board is enhanced, and the flame retardant property and the mechanical property of the cement shaving board are improved.
(2) The electric furnace ash has high Fe element content, the high-silicon bauxite submicron powder has high Al and Si element content, and a Si-P-Fe smoke abatement system and a Si-P-Al flame retardant system can be formed with phosphoric acid and phosphate ester, so that the flame retardant property of the cement shaving board is improved; meanwhile, the electric furnace dust and the high-silicon bauxite superfine powder have extremely small particle size and continuous particle size grading, fine pores can be filled, and the compactness and the mechanical property of the cement shaving board are improved.
(3) The quick-setting and quick-hardening cement is sulphoaluminate cement, has the characteristics of compressive strength of 20Mpa for 1 hour and compressive strength of 60Mpa for 28d, and greatly improves the mechanical property of the cement shaving board by utilizing the characteristics and the cooperation of the functional filler and the common Portland cement.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention solves the problems that the flame retardant property of the cement shaving board needs to be improved, the conventional flame retardant has high price and cannot integrate flame retardance and smoke abatement, and the electric furnace dust and the high-silicon bauxite need to develop a new application field.
2. The flame-retardant solid waste base cement particle board is prepared from wood shavings, an acidic phosphorus-containing silane modifier, electric furnace ash, high-silicon bauxite ultrafine powder, quick-setting and quick-hardening cement and ordinary portland cement, so that the large-scale and high-valued application of solid waste is realized, the cement particle board is endowed with flame retardant property, the purposes of reducing carbon and reducing carbon are realized, and the industrial development requirements of energy conservation, environmental protection and circular economy at present are met.
Detailed Description
The present invention will be described in detail with reference to specific examples, but the present invention is not limited to the examples.
Example 1
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000041
Figure BDA0003675124300000051
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56％)、K(1.32％)、Na(1.32％)、C(114%), zn (2.61%) and others (18.79%), the particle size being from 3 μm to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite submicron powder 2 O 3 /SiO 2 ) 3, the grain diameter is 10-15 μm, and the appearance is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite submicron powder, the quick-setting quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting quick-hardening cement, wherein the M and the M meet the condition that M/M =0.14.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 220min by using a constant-temperature magnetic stirrer with the stirring speed of 200r/min to obtain the functional filler.
(2) Wood shavings, functional fillers, quick-setting and quick-hardening cement and ordinary portland cement are mixed, water (the water amount is 50% of the total mass of the electric furnace ash, the high-silica bauxite ultrafine powder and the quick-setting and quick-hardening cement and the ordinary portland cement) is added into the mixture and uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, pressurization and pressure maintaining are carried out, the pressure is 6MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement shaving board blank at the temperature of 35 ℃, at the relative humidity of 70% for 12h to obtain the flame-retardant solid waste cement shaving board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 2 atmospheric pressures, and the steam curing time is 10 hours; and finally, drying to obtain the flame-retardant solid waste cement particle board.
Example 2
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000061
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle size is 3-5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 2, the grain diameter is 10-15 mu m, and the appearance is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, and the 1-hour compressive strength of the cement is 20MPa, and the 28-day compressive strength of the cement is 60MPa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 500r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of electric furnace ash, high-silica bauxite ultrafine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving the mixture into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 8 hours, so that the flame-retardant solid waste cement particle board blank is obtained.
(3) Curing the fire-retardant solid waste cement shaving board blank at the temperature of 30 ℃, the relative humidity of 90% for 10h to obtain the fire-retardant solid waste cement shaving board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 4 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste cement particle board.
Example 3
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000081
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle diameter is 3 to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite submicron powder 2 O 3 /SiO 2 ) 4, the grain diameter is 10-15 mu m, and the appearance is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.17.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 180min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Wood shavings, functional fillers, quick-setting and quick-hardening cement and ordinary portland cement are mixed, water (the water amount is 50% of the total mass of the electric furnace ash, the high-silica bauxite ultrafine powder and the quick-setting and quick-hardening cement and the ordinary portland cement) is added into the mixture and uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, pressurization and pressure maintaining are carried out, the pressure is 4MPa, and the pressure maintaining time is 5 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 40 ℃, the relative humidity of 80 percent and the curing time of 8 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 16 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Example 4
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000091
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle diameter is 3 to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite submicron powder 2 O 3 /SiO 2 ) 2, the grain diameter is 10-15 mu m, and the appearance is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.16.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 240min by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of electric furnace ash, high-silica bauxite ultrafine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving the mixture into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure of the plate blank stack at 6MPa for 4 hours, and obtaining the flame-retardant solid waste cement particle board blank.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 30 ℃, the relative humidity of 70% and the curing time of 9h to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 4 atmospheric pressures, and the steam curing time is 8 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Example 5
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000111
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle size is 3-5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 4, the grain diameter is 10-15 mu m, and the appearance is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.16.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 220min by using a constant-temperature magnetic stirrer with the stirring speed of 500r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of electric furnace ash, high-silica bauxite ultrafine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving the mixture into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 4MPa, and the pressure maintaining time is 7 hours, so that the flame-retardant solid waste cement particle board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 40 ℃, the relative humidity of 90% and the curing time of 11h to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 2 atmospheric pressures, and the steam curing time is 12 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Example 6
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000121
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle size is 3-5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 3, the grain diameter is 10-15 mu m, and the appearance is in a gravel shape.
The quick-setting and quick-hardening cement is sulphoaluminate cement, and the 1-hour compressive strength of the cement is 20MPa, and the 28-day compressive strength of the cement is 60MPa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite submicron powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein the M and the M meet the condition that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Wood shavings, functional fillers, quick-setting and quick-hardening cement and ordinary portland cement are mixed, water (the water amount is 50% of the total mass of the electric furnace ash, the high-silica bauxite ultrafine powder and the quick-setting and quick-hardening cement and the ordinary portland cement) is added into the mixture and uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, pressurization and pressure maintaining are carried out, the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Comparative example 1
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000141
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid and a silane coupling agent, the mass ratio of the phosphoric acid to the silane coupling agent is 3: 3, the concentration of the phosphoric acid is 80%, and the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle diameter is 3 to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 3, the grain diameter is 10-15 mu m, and the appearance is in a gravel shape.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of electric furnace ash, high-silica bauxite ultrafine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving the mixture into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement particle board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Comparative example 2
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000151
Figure BDA0003675124300000161
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphate and a silane coupling agent, the mass ratio of the phosphate to the silane coupling agent is 4:3, the phosphate is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle diameter is 3 to 5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) Is 3, particle size is 10 μm &15 μm, and the shape is gravel.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite submicron powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein the M and the M meet the condition that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Wood shavings, functional fillers, quick-setting and quick-hardening cement and ordinary portland cement are mixed, water (the water amount is 50% of the total mass of the electric furnace ash, the high-silica bauxite ultrafine powder and the quick-setting and quick-hardening cement and the ordinary portland cement) is added into the mixture and uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, pressurization and pressure maintaining are carried out, the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
Comparative example 3
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000171
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid and phosphate ester, and the mass ratio of the phosphoric acid to the phosphate ester is 3:4, the concentration of phosphoric acid is 80 percent, and the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and others (18.79%), and the particle size is 3-5 μm.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 3, the grain diameter is 10-15 mu m, and the appearance is in a gravel shape.
The quick-setting and quick-hardening cement is sulphoaluminate cement, the 1-hour compressive strength of the cement is 20Mpa, and the 28-day compressive strength of the cement is 60Mpa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier, the electric furnace ash and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of electric furnace ash, high-silica bauxite ultrafine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving the mixture into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement particle board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste cement particle board.
Comparative example 4
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000181
Figure BDA0003675124300000191
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The aluminum-silicon ratio (Al) of the high-silicon bauxite ultrafine powder 2 O 3 /SiO 2 ) 3, the grain diameter is 10-15 mu m, and the appearance is in a gravel shape.
The quick-setting and quick-hardening cement is sulphoaluminate cement, and the 1-hour compressive strength of the cement is 20MPa, and the 28-day compressive strength of the cement is 60MPa.
The ordinary portland cement is P.O 42.5.
The high-silicon bauxite super-fine powder, the quick-setting and quick-hardening cement and the ordinary portland cement have the total mass (M) and the mass (M) of the quick-setting and quick-hardening cement, wherein the mass M and the mass M meet the requirement that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier and the high-silicon bauxite superfine powder for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement are mixed, water (the water amount is 50 percent of the total mass of the high-silica bauxite superfine powder, the quick-setting and quick-hardening cement and the ordinary portland cement) is added into the mixture and uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, pressurization and pressure maintaining are carried out, the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste cement particle board.
Comparative example 5
The components used for preparing 100g of the product of the invention and the mass ratio thereof are as follows:
Figure BDA0003675124300000201
the wood shavings have the dimensions of 15 mm-30 mm in length, 2 mm-5 mm in width, 0.2 mm-0.5 mm in thickness and 0.1 mm-0.5 mm in particle size of sawdust ash.
The acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent, the mass ratio of the phosphoric acid to the phosphate ester to the silane coupling agent is 3:4:3, the concentration of the phosphoric acid is 80%, the concentration of the phosphate ester is 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and the concentration of the silane coupling agent is KH550.
The chemical composition (mass fraction) of the electric furnace ash is Fe 3 O 4 (0.34％)、FeO(8.91％)、Fe/Fe 2 O 3 (58.65％)、SiO 2 (2.06％)、CaO(2.92％)、MgO(1.38％)、Al 2 O 3 (0.56%), K (1.32%), na (1.32%), C (1.14%), zn (2.61%) and the likeHe (18.79%) has a particle size of 3-5 μm.
The quick-setting and quick-hardening cement is sulphoaluminate cement, and the 1-hour compressive strength of the cement is 20MPa, and the 28-day compressive strength of the cement is 60MPa.
The ordinary portland cement is P.O 42.5.
The total mass (M) of the electric furnace dust, the high-silicon bauxite superfine powder, the quick-setting and quick-hardening cement and the common portland cement, and the mass (M) of the quick-setting and quick-hardening cement, wherein M and M meet the requirement that M/M =0.15.
(1) And (3) mixing and stirring the acidic phosphorus-containing silane modifier and the electric furnace ash for 200min by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min to obtain the functional filler.
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water (the water amount is 50% of the total mass of the electric furnace dust, the quick-setting and quick-hardening cement and the ordinary portland cement) into the mixture, uniformly stirring, paving into a plate blank, putting the plate blank stack into a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 6 hours, so that the flame-retardant solid waste cement shaving board blank is obtained.
(3) And curing the flame-retardant solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent and the curing time of 10 hours to obtain the flame-retardant solid waste cement particle board precursor.
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 3 atmospheric pressures, and the steam curing time is 14 hours; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
The performance test process of the flame-retardant solid waste cement particle boards prepared in the examples 1 to 6 and the comparative examples 1 to 5 is as follows:
TABLE 1 Performance of flame retardant solid waste cement particle board
Figure BDA0003675124300000211
Figure BDA0003675124300000221

Claims (7)

1. The flame-retardant solid waste cement particle board is characterized by comprising the following raw materials in percentage by weight:
25-30% of wood shavings
4-6% of acidic phosphorus-containing silane modifier
10-15% of electric furnace ash
15-20% of high-silicon bauxite superfine powder
7-12% of quick-setting and quick-hardening cement
25% -32% of ordinary portland cement;
the acidic phosphorus-containing silane modifier is a mixture of phosphoric acid, phosphate ester and a silane coupling agent;
the particle size of the electric furnace dust is 3-5 mu m;
the aluminum-silicon ratio of the high-silicon bauxite superfine powder is 2 to 4, the particle size is 10-15 mu m, and the shape is a gravel shape;
the preparation method of the flame-retardant solid waste cement particle board comprises the following steps:
(1) Mixing and stirring the acidic phosphorus-containing silane modifier, electric furnace ash and the high-silicon bauxite superfine powder for 180min to 240min by using a constant-temperature magnetic stirrer with the stirring speed of 200r/min to 500r/min to obtain a functional filler;
(2) Mixing wood shavings, functional filler, quick-setting and quick-hardening cement and ordinary portland cement, adding water into the mixture, uniformly stirring, paving into a plate blank, putting the plate blank stack in a cold press by a forklift, pressurizing and maintaining the pressure of the plate blank at 4-6 MPa for 4-8 h to obtain a flame-retardant solid waste cement particle board blank;
(3) Curing the plate blank of the flame-retardant solid waste cement shaving board at the temperature of 30-40 ℃, the relative humidity of 70-90% for 8-12h to obtain a precursor of the flame-retardant solid waste cement shaving board;
(4) Feeding the flame-retardant solid waste cement particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 2-4 atmospheric pressures, and the steam curing time is from 8h to 16h; and finally, drying to obtain the flame-retardant solid waste base cement particle board.
2. The flame-retardant solid waste cement particle board according to claim 1, wherein the wood particles have a length of 15mm to 30mm, a width of 2mm to 5mm, a thickness of 0.2mm to 0.5mm, and a particle size of wood dust of 0.1mm to 0.5mm.
3. The flame retardant solid waste cement particle board according to claim 1, wherein the acidic phosphorus-containing silane modifier comprises: the mass ratio of phosphoric acid, phosphate ester and silane coupling agent is 3.
4. The flame-retardant solid waste cement particle board according to claim 1, wherein the electric furnace ash comprises the following chemical components in percentage by mass: fe 3 O 4 0.34% of FeO, 8.91% of Fe/Fe 2 O 3 58.65% of SiO 2 2.06% of CaO, 2.92% of CaO, 1.38% of MgO, and Al 2 O 3 0.56%, K1.32%, na 1.32%, C1.14%, zn 2.61%, others 18.79%.
5. The flame retardant solid waste cement particle board according to claim 1, wherein the quick setting and quick hardening cement is sulphoaluminate cement with a 1h compressive strength of 20Mpa and a 28d compressive strength of 60Mpa.
6. The flame retardant solid waste cement particle board according to claim 1, wherein the Portland cement is P.O 42.5.
7. The flame-retardant solid waste cement particle board according to claim 1, wherein the total mass of the electric furnace dust, the ultrafine high-silica bauxite powder, the quick-setting cement and the ordinary portland cement is set to be M, the mass of the quick-setting cement is set to be M, and the relationship between M and M satisfies M/M =0.14 to 0.17.
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