CN114873973A - Photocatalytic solid waste-based cement particle board and preparation method thereof - Google Patents

Photocatalytic solid waste-based cement particle board and preparation method thereof Download PDF

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CN114873973A
CN114873973A CN202210631888.3A CN202210631888A CN114873973A CN 114873973 A CN114873973 A CN 114873973A CN 202210631888 A CN202210631888 A CN 202210631888A CN 114873973 A CN114873973 A CN 114873973A
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solid waste
photocatalytic
powder
ash
particle board
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CN114873973B (en
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张�浩
王艳茹
龙红明
吴胜华
朱子康
季益龙
宗志芳
杜晓燕
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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
    • C04B28/04—Portland 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/26—Carbonates
    • C04B14/28—Carbonates of calcium
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/062—Purification products of smoke, fume or exhaust-gases
    • 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
    • C04B22/02—Elements
    • 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
    • C04B22/06—Oxides, Hydroxides
    • 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
    • C04B22/06—Oxides, Hydroxides
    • C04B22/068—Peroxides, e.g. hydrogen peroxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
    • 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
    • C04B2111/00017—Aspects relating to the protection of the environment
    • 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
    • C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
    • 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
    • C04B2111/34—Non-shrinking or non-cracking materials
    • C04B2111/343—Crack resistant materials
    • 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
    • C04B2111/40—Porous or lightweight materials
    • 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 photocatalytic type solid waste base 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, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, a semidry desulfurization ash superfine powder solution, a composite oxygen-assisting agent and limestone superfine powder. The invention solves the problems that the cement particle board has single performance and does not have photocatalysis; the cement shaving board production needs to consume cement, which causes the problem of large consumption of primary resources; and the steel rolling sludge and the semi-dry desulfurization ash need to develop new application fields; the semi-dry desulfurized fly ash has poor stability and is difficult to be directly utilized; the photocatalytic solid waste base cement particle board is prepared by fully utilizing solid waste, so that the large-scale and high-valued application of the solid waste is realized, the cement particle board is endowed with photocatalytic performance, the purposes of reducing carbon and carbon are realized, and the current industrial development requirements of energy conservation, environmental protection and circular economy are met.

Description

Photocatalytic solid waste-based cement particle board and preparation method thereof
Technical Field
The invention belongs to the field of cement particle boards, and particularly relates to a photocatalytic type 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 energy conservation and environmental protection, namely, less cement and gas purification.
The steel rolling sludge is sludge produced in the steel rolling process of steel enterprises, and the iron content of the sludge is high, namely the FeO content is more than 40 percent, and Fe/Fe 2 O 3 The content is more than 45 percent; the semi-dry desulfurized ash of the semi-dry desulfurized waste is extremely complex in components and comprises various components such as a desulfurizing agent, a desulfurization product, fly ash and the like, wherein the calcium sulfite is unstable in property. If the steel rolling sludge, the steel rolling sludge and the hard agricultural and forestry wastes can be utilized to prepare the photocatalytic solid waste cement particle board, the resistance of the cement particle board can be improvedThe cement particle board has the advantages of reducing the consumption of primary resources such as cement and the like, along with the folding strength and the impact strength, and endowing the cement particle board with photocatalytic performance.
If the photocatalytic solid waste base cement particle board can be prepared by utilizing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, semidry desulfurization ash ultrafine powder solution, a composite oxygen-assisting agent and limestone ultrafine powder, the solid waste large-scale and high-valued application is realized, the cement particle board is endowed with photocatalytic performance, 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 cement particle board aims to solve the problems that the cement particle board has single performance and does not have photocatalysis; the cement shaving board production needs to consume cement, which causes the problem of large consumption of primary resources; and the steel rolling sludge and the semi-dry desulfurization ash need to develop new application fields; the semi-dry desulfurized fly ash has poor stability and is difficult to be directly utilized. The photocatalytic solid waste base cement particle board is prepared by utilizing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, a semidry desulfurization ash superfine powder solution, a composite oxygen-assisting agent and limestone superfine powder, 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 photocatalytic type solid waste base cement particle board, which comprises the following raw materials in percentage by weight:
Figure BDA0003675130170000021
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 waste composite ash powder is a mixture of sawdust ash and waste walnut shell powder, the mass ratio of the sawdust ash to the waste walnut shell powder is 2: 1-1: 2, the particle size of the sawdust ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than or equal to 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 60-80%, and the fineness of the semidry desulfurization ash submicron powder is 600-800 meshes.
The composite oxygen-assisting agent is a mixed liquid of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 5: 1-3: 1.
The fineness of the limestone superfine powder is 600 meshes to 800 meshes.
The invention also provides a preparation method of the photocatalytic type solid waste cement particle board, which comprises the following steps:
(1) firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 3-1: 5, a constant-temperature magnetic stirrer is used for stirring for 30 min-45 min under the condition of 200 r/min-500 r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1000-1200 mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 500 r/min-700 r/min, liquid sol is obtained after stirring for 45min-60min under the condition of 200 r/min-500 r/min, the liquid sol is aged indoors to form dry gel, then the dry gel is put into a moderate-temperature experimental furnace to be heated to 600 ℃ -800 ℃ at the speed of 1.5 ℃/min-2.5 ℃/min, the temperature is kept for 2 h-4 h, and the temperature is naturally cooled to the room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 50-60%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 200 r/min-500 r/min and the stirring temperature of 50-70 ℃ to mix and stir for 1-3 h to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash ultrafine powder and limestone ultrafine powder are mixed, water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash ultrafine powder and the limestone ultrafine powder) is added into the mixture, the mixture is 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 4 MPa-6 MPa, and the pressure maintaining time is 4 h-8 h, so that the photocatalytic solid waste cement-based particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the temperature of 30-40 ℃, at the relative humidity of 70-90% for 8-12 h to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 photocatalytic solid waste cement particle board.
Compared with the prior art, the invention has the following beneficial effects:
1. aiming at Fe in steel rolling sludge x O y The characteristic of high content is that hydrochloric acid solution is utilized to treat FeO and Fe/Fe contained in the steel rolling sludge 2 O 3 After partial dissolution, the TiO 2 Modifying to realize the modification of the rolled steel sludge into TiO 2 The formaldehyde is degraded under the photocatalysis of a visible light source. Simultaneous TiO 2 2 Can promote the hydration speed and quality of silicate and improve the breaking strength and the impact strength.
2. The unstable CaSO of the nature is promoted by using manganese dioxide, hydrogen peroxide, semi-dry desulfurization ash and oxygen in the air under the condition that the reaction temperature is 50-70 DEG C 3 Air-hardening cementing material CaSO with stable tropism property 4 So as to replace cement and other cementing materials.
3. The waste walnut shell powder belongs to nut shells, has high hardness and a porous structure, and can improve the crack resistance of the surface by utilizing the characteristic of high hardness; on the other hand, the porous structure characteristic is utilized, formaldehyde gas can be adsorbed, and the TiO is modified by the steel rolling sludge 2 The photocatalytic performance is improved.
4. The limestone mainly comprises CaCO 3 After the superfine grinding technology is used for treatment, the specific surface area is increased, crystal nuclei can be formed to accelerate the hydration reaction of the common portland cement and the oxidized semi-dry desulfurized fly ash superfine powder, and simultaneously, the carbonate aluminate is generated, the filling rate of the cement shaving board is increased, and the mechanical property is improved.
5. The invention solves the problems that the cement particle board has single performance and does not have photocatalysis; the cement shaving board production needs to consume cement, which causes the problem of large consumption of primary resources; and the steel rolling sludge and the semidry desulfurization ash need to develop new application fields; the semi-dry desulfurized fly ash has poor stability and is difficult to be directly utilized.
6. The photocatalytic solid waste based cement particle board is prepared from wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, semidry desulfurization ash ultrafine powder solution, a composite oxygen-assisting agent and limestone ultrafine powder, so that the large-scale and high-valued application of solid waste is realized, the cement particle board is endowed with photocatalytic performance, 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 BDA0003675130170000051
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 2: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic fillingThe material is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 80%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
The fineness of the limestone superfine powder is 600 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 3, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1200-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 500r/min, liquid sol is obtained after stirring for 60min under the condition of 400r/min, dry gel is formed by indoor aging, then the dry gel is placed into a medium-temperature experimental furnace to be heated to 600 ℃ at the speed of 2 ℃/min, the temperature is kept for 4h, and the dry gel is naturally cooled to room temperature to obtain steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 55%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 500r/min and the stirring temperature of 50 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure of the plate blank in a pressure maintaining mode, wherein the pressure maintaining time is 6MPa, and the photocatalytic solid waste cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 40 ℃, the relative humidity of 90 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 14 hours; and finally, drying to obtain the photocatalytic 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 BDA0003675130170000071
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 800 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 5: 1.
The fineness of the limestone superfine powder is 700 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 5, a uniform and transparent solution is obtained after stirring for 30min under the condition of 400r/min by using a constant-temperature magnetic stirrer, then a dilute hydrochloric acid solution (pH is 5) dissolved with 1100-mesh steel rolling sludge superfine powder is slowly added into the solution under the condition of 700r/min, and stirring is carried out for 45min under the condition of 500r/min to obtain the productLiquid sol is aged indoors to form dry gel, then the dry gel is put into a moderate temperature experimental furnace to be heated to 700 ℃ at the speed of 2.5 ℃/min, the temperature is kept for 2h, the temperature is naturally cooled to room temperature, and the steel rolling sludge modified TiO is obtained 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 60 percent, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 3 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in 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 photocatalytic solid waste cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 70 percent for 12 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 photocatalytic 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 BDA0003675130170000091
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 2, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 60%, and the fineness of the semidry desulfurization ash submicron powder is 600 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 3: 1.
The fineness of the limestone superfine powder is 800 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 45min under the condition of 200r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1000-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 600r/min, stirring is carried out for 50min under the condition of 300r/min to obtain a liquid sol, the liquid sol is aged indoors to form dry gel, then the dry gel is placed into a medium-temperature experimental furnace to be heated to 800 ℃ at the speed of 1.5 ℃/min, the temperature is kept for 3h, and the natural cooling is carried out to room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge is modified with TiO 2 The mass percent of the medium steel rolling sludge submicron powder is 50%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 200r/min and the stirring temperature of 70 ℃ to mix and stir for 1h to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in 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 photocatalytic solid waste cement based particle board blank is obtained.
(4) And (3) curing the photocatalysis type solid waste cement particle board blank at the temperature of 30 ℃, at the relative humidity of 80% for 8h to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic solid waste 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 BDA0003675130170000101
Figure BDA0003675130170000111
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 2, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash ultrafine powder solution is 70%, and the fineness of the semidry desulfurization ash ultrafine powder is 800 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 5: 1.
The fineness of the limestone superfine powder is 600 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 5, a constant-temperature magnetic stirrer is used for stirring for 35min under the condition of 500r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1000-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 700r/min, liquid sol is obtained after stirring for 55min under the condition of 200r/min, dry gel is formed by indoor aging, then the dry gel is put into a medium-temperature experimental furnace to be heated to 600 ℃ at the speed of 2.5 ℃/min, the temperature is kept for 4h, and the dry gel is naturally cooled to room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the superfine powder of the sludge from the medium steel rolling is 50 percent, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And (3) blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 400r/min and the stirring temperature of 50 ℃ to mix and stir for 3 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure of the plate blank in a pressure maintaining mode, wherein the pressure maintaining time is 6MPa and 4 hours, and thus obtaining the photocatalytic solid waste cement particle board blank.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 30 ℃, the relative humidity of 90 percent for 11 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 16 hours; and finally, drying to obtain the photocatalytic solid waste 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 BDA0003675130170000121
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 2: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 75%, and the fineness of the semidry desulfurization ash submicron powder is 600 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 3: 1.
the fineness of the limestone superfine powder is 800 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 3, a constant-temperature magnetic stirrer is used for stirring for 45min under the condition of 200r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1200-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 500r/min, liquid sol is obtained after stirring for 45min under the condition of 400r/min, dry gel is formed by indoor aging, then the dry gel is put into a medium-temperature experimental furnace to be heated to 800 ℃ at the speed of 1.5 ℃/min, the temperature is kept for 2h, and the dry gel is naturally cooled to room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 Quality of medium rolling steel sludge superfine powderThe percentage is 60%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 200r/min and the stirring temperature of 70 ℃ to mix and stir for 1h to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure of the plate blank at 4MPa for 5 hours, and obtaining the photocatalytic solid waste cement particle board blank.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 40 ℃, the relative humidity of 70 percent for 12 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 photocatalytic solid waste 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 BDA0003675130170000141
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
The fineness of the limestone superfine powder is 700 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1100-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 600r/min, stirring is carried out for 50min under the condition of 300r/min to obtain a liquid sol, the liquid sol is aged indoors to form dry gel, then the dry gel is placed into a medium-temperature experimental furnace to be heated to 700 ℃ at the speed of 2 ℃/min, the temperature is kept for 3h, and the natural cooling is carried out to the room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 55%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, semi-dry oxidation desulfurization ash ultrafine powder and limestone ultrafine powder are mixed, water (the water amount is 50% of the total mass of the ordinary portland cement, the semi-dry oxidation desulfurization ash ultrafine powder and the limestone ultrafine powder) is added into the mixture at the same time, the mixture is uniformly stirred, then the mixture is paved into a plate blank, the plate blank stack is placed in a cold press by a forklift, and pressurization and pressure maintaining are carried out, wherein the pressure is 5MPa, and the pressure maintaining time is 7 hours, so that the photocatalysis type solid waste base cement shaving board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic solid waste 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 BDA0003675130170000161
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
the fineness of the limestone superfine powder is 700 meshes.
(1) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(2) Mixing wood shavings, waste composite ash powder, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) 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 of the plate blank stack at 5MPa for 7 hours to obtain the solid waste base cement particle board blank.
(3) And curing the 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 precursor of the solid waste cement particle board.
(4) Feeding the solid waste base 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 12 hours; and finally, drying to obtain the 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 BDA0003675130170000171
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The fineness of the limestone superfine powder is 700 meshes.
(1) Firstly, according to titanic acidThe tetrabutyl ester and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1100-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 600r/min, liquid sol is obtained after stirring for 50min under the condition of 300r/min, dry gel is formed by indoor aging, then the dry gel is put into a medium-temperature experimental furnace to be heated to 700 ℃ at the speed of 2 ℃/min and is kept at the constant temperature for 3h, and the dry gel is naturally cooled to the room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 55%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And (3) blowing air into the semidry desulfurization ash micropowder solution and an air pump by utilizing a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semidry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 7 hours, so that the photocatalytic solid waste cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic solid waste 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 BDA0003675130170000191
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (the screen residue is less than 1%).
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
(1) firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1100-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 600r/min, stirring is carried out for 50min under the condition of 300r/min to obtain a liquid sol, the liquid sol is aged indoors to form dry gel, then the dry gel is placed into a medium-temperature experimental furnace to be heated to 700 ℃ at the speed of 2 ℃/min, the temperature is kept for 3h, and the natural cooling is carried out to the room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 55%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement and oxidized semi-dry desulfurization ash superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement and the oxidized semi-dry desulfurization ash superfine powder) into the mixture, uniformly stirring, paving into a plate blank, putting the plate blank stack into a cold press by a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 7 hours, so that the photocatalytic solid waste base cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic 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 BDA0003675130170000211
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 waste composite ash powder is wood dust, and the particle size of the waste composite ash powder is 0.1-0.5 mm.
The solid waste photocatalytic filler is steel rolling sludge modified TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
The fineness of the limestone superfine powder is 700 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution (pH is 5) in which 1100-mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 600r/min, stirring is carried out for 50min under the condition of 300r/min to obtain a liquid sol, the liquid sol is aged indoors to form dry gel, then the dry gel is placed into a medium-temperature experimental furnace to be heated to 700 ℃ at the speed of 2 ℃/min, the temperature is kept for 3h, and the natural cooling is carried out to the room temperature to obtain the steel rolling sludge modified TiO 2 . The steel rolling sludge modified TiO 2 The mass percentage of the medium steel rolling sludge superfine powder is 55%, and the tetrabutyl titanate, the absolute ethyl alcohol and the hydrochloric acid are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semi-dry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semi-dry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 7 hours, so that the photocatalytic solid waste cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic 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 BDA0003675130170000221
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 waste composite ash powder is a mixture of wood chip ash and waste walnut shell powder, the mass ratio of the wood chip ash to the waste walnut shell powder is 1: 1, the particle size of the wood chip ash is 0.1-0.5 mm, and the fineness of the waste walnut shell powder is 325 meshes (screen residue: 1%).
The photocatalytic filler is TiO 2 。
The ordinary portland cement is P.O 42.5.5.
The mass fraction of the semidry desulfurization ash submicron powder solution is 65%, and the fineness of the semidry desulfurization ash submicron powder is 700 meshes.
The composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 4: 1.
The fineness of the limestone superfine powder is 700 meshes.
(1) Firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 4, a constant-temperature magnetic stirrer is used for stirring for 40min under the condition of 300r/min to obtain a uniform transparent solution, liquid sol is obtained after stirring for 50min under the condition of 300r/min, the liquid sol is aged indoors to form dry gel, then the dry gel is put into a medium-temperature experimental furnace to be heated to 700 ℃ at the speed of 2 ℃/min, the temperature is kept for 3h, and the TiO is obtained after natural cooling to the room temperature 2 . The tetrabutyl titanate and the absolute ethyl alcohol are analytically pure.
(2) And blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 300r/min and the stirring temperature of 60 ℃ to mix and stir for 2 hours to obtain the oxidized semi-dry desulfurization ash micropowder.
(3) Mixing wood shavings, waste composite ash powder, photocatalytic filler, ordinary portland cement, oxidized semidry desulfurization ash superfine powder and limestone superfine powder, adding water (the water amount is 50% of the total mass of the ordinary portland cement, the oxidized semidry desulfurization ash superfine powder and the limestone superfine powder) into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure, wherein the pressure is 5MPa, and the pressure maintaining time is 7 hours, so that the photocatalytic solid waste cement particle board blank is obtained.
(4) And curing the photocatalysis type solid waste cement particle board blank at the curing temperature of 35 ℃, the relative humidity of 80 percent for 10 hours to obtain the photocatalysis type solid waste cement particle board precursor.
(5) Feeding the photocatalytic 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 12 hours; and finally, drying to obtain the photocatalytic solid waste cement particle board.
The photocatalytic solid waste cement particle board prepared in the embodiments 1 to 6 and the comparative examples 1 to 5 has the following performance detection process:
TABLE 1 Properties of photocatalytic type solid waste cement particle board
Figure BDA0003675130170000241

Claims (5)

1. The photocatalysis type solid waste base cement particle board is characterized by comprising the following raw materials in percentage by weight:
Figure FDA0003675130160000011
the waste composite ash powder is a mixture of wood dust and waste walnut shell powder;
the solid waste photocatalytic filler is steel rolling sludge modified TiO 2 ；
The mass fraction of the semidry desulfurization ash ultrafine powder solution is 60-80%, and the fineness of the semidry desulfurization ash ultrafine powder is 600-800 meshes;
the composite oxygen-assisting agent is a mixed solution of manganese dioxide and hydrogen peroxide, and the mass ratio of the manganese dioxide to the hydrogen peroxide is 5: 1-3: 1;
the fineness of the limestone superfine powder is 600 meshes to 800 meshes.
2. The photocatalytic type solid waste-based cement particle board as set forth in claim 1, wherein the wood particles have a size of 15mm to 30mm in length, 2mm to 5mm in width and 0.2mm to 0.5mm in thickness.
3. The photocatalytic type solid waste cement particle board as claimed in claim 1, wherein the mass ratio of the wood dust to the waste walnut shell powder is 2: 1 to 1: 2; the particle size of the wood dust ash is 0.1-0.5 mm, the fineness of the waste walnut shell powder is 325 meshes, and the screen residue is less than 1%.
4. The photocatalytic solid waste cement particle board of claim 1, wherein the portland cement is P.O 42.5.5.
5. The photocatalytic solid waste cement particle board as set forth in claim 1, comprising the steps of:
(1) firstly, tetrabutyl titanate and absolute ethyl alcohol are compounded according to the volume ratio of 1: 3-1: 5, a constant-temperature magnetic stirrer is used for stirring for 30 min-45 min under the condition of 200 r/min-500 r/min to obtain a uniform transparent solution, then a dilute hydrochloric acid solution in which 1000-1200 mesh steel rolling sludge superfine powder is dissolved is slowly added into the solution under the condition of 500 r/min-700 r/min, the solution is stirred for 45min-60min under the condition of 200 r/min-500 r/min to obtain a liquid sol, the liquid sol is aged indoors to form a dry gel, the dry gel is put into an intermediate-temperature experimental furnace to be heated to 600-800 ℃ at the speed of 1.5-2.5 ℃/min, the temperature is kept for 2 h-4 h, and the steel rolling sludge modified TiO is obtained by naturally cooling to the room temperature 2 (ii) a The steel rolling sludge modified TiO 2 The mass percentage of the superfine powder of the sludge of the medium and steel rolling is 50 to 60 percent, and the tetrabutyl titanateThe absolute ethyl alcohol and the hydrochloric acid are analytically pure;
(2) blowing air into the semi-dry desulfurization ash micropowder solution, the composite oxygen-assisting agent and an air pump by using a constant-temperature magnetic stirrer with the stirring speed of 200 r/min-500 r/min and the stirring temperature of 50-70 ℃ to mix and stir for 1-3 h to obtain oxidized semi-dry desulfurization ash micropowder;
(3) mixing wood shavings, waste composite ash powder, solid waste photocatalytic filler, ordinary portland cement, oxidized semidry desulfurization ash superfine powder and limestone superfine powder, adding water into the mixture, uniformly stirring, paving into a plate blank, stacking the plate blank in a cold press by using a forklift, pressurizing and maintaining the pressure of the plate blank in a range of 4-6 MPa for 4-8 h to obtain a photocatalytic solid waste base cement shaving board blank;
(4) curing the photocatalysis type solid waste cement particle board blank at the temperature of 30-40 ℃, the relative humidity of 70-90% for 8-12 h to obtain a photocatalysis type solid waste cement particle board precursor;
(5) feeding the photocatalytic solid waste cement-based particle board precursor into a steam curing kettle for steam curing, wherein the steam curing pressure is 2-4 atm, and the steam curing time is 8-16 h; and finally, drying to obtain the photocatalytic solid waste cement particle board.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117005A (en) * 2007-09-04 2008-02-06 中国林业科学研究院木材工业研究所 Cement flakeboard and production process thereof
CN105541265A (en) * 2016-01-20 2016-05-04 卓达新材料科技集团有限公司 Cement particle board and preparation method thereof
CN109943112A (en) * 2019-03-26 2019-06-28 安徽工业大学 A kind of environmental photocatalysis fireproof coating and preparation method thereof for air cleaning
CN110615644A (en) * 2019-10-31 2019-12-27 廖少忠 Light partition board capable of adsorbing harmful gas such as formaldehyde and its making process
CN110668722A (en) * 2019-11-04 2020-01-10 安徽工业大学 Oxidation-flame retardation-high shear force integrated solid waste inorganic adhesive and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117005A (en) * 2007-09-04 2008-02-06 中国林业科学研究院木材工业研究所 Cement flakeboard and production process thereof
CN105541265A (en) * 2016-01-20 2016-05-04 卓达新材料科技集团有限公司 Cement particle board and preparation method thereof
CN109943112A (en) * 2019-03-26 2019-06-28 安徽工业大学 A kind of environmental photocatalysis fireproof coating and preparation method thereof for air cleaning
CN110615644A (en) * 2019-10-31 2019-12-27 廖少忠 Light partition board capable of adsorbing harmful gas such as formaldehyde and its making process
CN110668722A (en) * 2019-11-04 2020-01-10 安徽工业大学 Oxidation-flame retardation-high shear force integrated solid waste inorganic adhesive and preparation method thereof

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