CN115557769A - Environment-friendly brick and preparation method thereof - Google Patents
Environment-friendly brick and preparation method thereof Download PDFInfo
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- CN115557769A CN115557769A CN202211293396.4A CN202211293396A CN115557769A CN 115557769 A CN115557769 A CN 115557769A CN 202211293396 A CN202211293396 A CN 202211293396A CN 115557769 A CN115557769 A CN 115557769A
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- 239000011449 brick Substances 0.000 title claims abstract description 96
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002699 waste material Substances 0.000 claims abstract description 199
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 123
- 239000000843 powder Substances 0.000 claims abstract description 109
- 238000005034 decoration Methods 0.000 claims abstract description 77
- 239000004576 sand Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 35
- 239000010440 gypsum Substances 0.000 claims abstract description 35
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 33
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 238000004064 recycling Methods 0.000 claims abstract description 20
- 239000010881 fly ash Substances 0.000 claims abstract description 18
- 239000011398 Portland cement Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 230000001172 regenerating effect Effects 0.000 claims abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 64
- 238000000227 grinding Methods 0.000 claims description 44
- 238000012216 screening Methods 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 37
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 20
- 238000011084 recovery Methods 0.000 claims description 14
- 230000007613 environmental effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 239000002912 waste gas Substances 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 9
- 238000007580 dry-mixing Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 229940037003 alum Drugs 0.000 claims description 8
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002956 ash Substances 0.000 claims description 8
- 238000001354 calcination Methods 0.000 claims description 8
- 230000003009 desulfurizing effect Effects 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims 1
- 239000002910 solid waste Substances 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 description 31
- 239000000463 material Substances 0.000 description 20
- 239000000203 mixture Substances 0.000 description 13
- 238000000465 moulding Methods 0.000 description 13
- 230000003203 everyday effect Effects 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- 238000010408 sweeping Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
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- 238000006477 desulfuration reaction Methods 0.000 description 1
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- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- -1 iron-aluminum-vanadium Chemical compound 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- 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
- C04B18/0427—Dry 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
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/165—Ceramic waste
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an environment-friendly brick and a preparation method thereof, wherein the environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 6-12 parts; recycled aggregate of decoration garbage: 45-60 parts; regenerating micro powder: 3-8 parts; waste ceramic sand recycling: 3-10 parts; portland cement: 8-20 parts; fly ash: 7-10 parts; desulfurized gypsum: 2-8 parts; water reducing agent: 0.3-2 parts; early strength agent: 0.5-2 parts. The amount of the decorative garbage recycled aggregate in the raw materials of the environment-friendly brick is more than 45 percent, the recycled aggregate is used as the whole component in the formula, and waste residues generated by waste lithium batteries are treated by adding a certain proportion, so that the aim of comprehensively treating solid wastes is fulfilled, and the environment-friendly brick also has excellent mechanical properties and meets the national standard requirements.
Description
Technical Field
The invention belongs to the technical field of solid waste recycling, and particularly relates to an environment-friendly brick and a preparation method thereof.
Background
With the rapid development of the social economy of China, the national economy is steadily improved and the urbanization pace is accelerated. People's material living standard has been developed unprecedentedly, and society focuses more and more on improving living conditions, traffic conditions and entertainment conditions of people. People enjoy comfort and convenience brought by development, and meanwhile, the natural environment changes silently.
On one hand, the construction of various infrastructures and new houses, the transformation of old houses and old roads and other activities are visible everywhere, and the side effect is that the discharge amount of construction waste such as demolition and decoration is increased dramatically. The phenomena of random dumping and landfill are increasingly serious along with environmental pollution, and the phenomenon of refuse surrounding in many cities occurs. On the other hand, more and more lithium batteries are used as energy sources in daily life, and no matter a large number of waste lithium batteries are generated due to the use of electronic products such as mobile phones and computers and new energy vehicles such as automobiles, in order to reduce the pollution of the waste lithium batteries to the environment, related industries such as processing the waste lithium batteries and recycling valuable metals are vigorously developed in recent years, but the processing of the waste lithium batteries also generates a large number of industrial waste residues, and if the waste residues are not processed reasonably, more serious secondary pollution is caused.
At present, the two types of solid wastes are respectively treated by the related technologies to be made into different products. The prior art prepares products such as baking-free bricks, mortar and the like by adding a certain proportion of primary aggregate and other components after crushing construction waste into recycled aggregate, and prepares solid wastes generated by processing waste lithium batteries into other building materials and the like, but the baking-free bricks, mortar and other building materials prepared by using the recycled aggregate, particularly decoration garbage recycled aggregate in the prior art have the problems of low utilization rate of the recycled aggregate, poor physical properties of the recycled products and the like, so that the recycled aggregate, particularly the decoration garbage recycled aggregate can not be reasonably and effectively utilized.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. The environment-friendly brick comprises the raw materials of the environment-friendly brick, wherein the total amount of the decoration garbage recycled aggregate is more than 45%, the recycled aggregate is used as all components in the formula, and a certain proportion of waste residues generated by waste lithium batteries and desulfurized gypsum generated by sulfur-containing waste gas are added, so that the purpose of cooperatively and comprehensively treating solid wastes is achieved, and the environment-friendly brick also has excellent mechanical properties and meets the national standard requirements.
The technical purpose of the invention is realized by the following technical scheme:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 6-12 parts; recycled aggregate of decoration garbage: 45-60 parts; regenerating micro powder: 3-8 parts; waste ceramic sand recycling: 3-10 parts; portland cement: 8-20 parts; fly ash: 7-10 parts; desulfurized gypsum: 2-8 parts; water reducing agent: 0.3-2 parts; early strength agent: 0.5-2 parts.
Preferably, the environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 7-8 parts; the aggregate recycled by the decoration garbage: 45-55 parts of a stabilizer; regenerating micro powder: 3-6 parts; waste ceramic sand recycling: 3-7 parts; portland cement: 10-15 parts; fly ash: 8-9 parts; desulfurized gypsum: 2-4 parts; water reducing agent: 0.3-1 part; early strength agent: 0.5-1 part.
Preferably, the demolished garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by demolishing buildings and roads, and the particle size of the demolished garbage recycled aggregate is 2.36-9.5mm.
Preferably, the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sand soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm.
Preferably, the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, the powder is fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, and the calcium carbonate waste residues are generated in a waste lithium battery recovery process.
Preferably, the particle size of the powder is less than 0.15mm.
Preferably, the regenerated micro powder is obtained by mixing and grinding the powder and the calcium carbonate waste residue according to the weight ratio of 1 (0.1-0.2), and the pass rate of the grinding fineness is 0.045mm and is 80-90%.
Preferably, the regenerated micro powder is obtained by putting the powder and the calcium carbonate waste residue into a dry ball mill and grinding for 30-120 min.
Preferably, the waste pottery sand is obtained by calcining waste iron-aluminum alum slag generated by processing waste lithium batteries in a rotary kiln, crushing and screening, and the particle size of the waste pottery sand is 0.15-4.75mm.
Preferably, the desulfurized gypsum is gypsum waste residue powder produced by desulfurization of sulfur-containing waste gas produced in a waste utilization high-temperature process.
Preferably, the water reducing agent is at least one of polycyclic aromatic salts and water-soluble resin sulfonates.
Preferably, the water reducing agent is composed of polycyclic aromatic salts and water-soluble resin sulfonate according to a weight ratio of 1.
The invention also aims to provide a preparation method of the environment-friendly brick, which comprises the following steps:
the preparation method of the environment-friendly brick comprises the following steps: the preparation method comprises the following steps of dry mixing the raw materials, aging, adding water, stirring, press forming and maintaining.
Preferably, the dry mixing time is 3-5min.
Preferably, the aging time is 20-30min.
Preferably, after the water is added, the water-to-gel ratio of the formed material is 0.4-0.6.
Preferably, the mixing time is 8-12min.
Preferably, the forming pressure of the compression forming is 15-25MPa.
Preferably, the maintenance mode is water sweeping maintenance, wherein the first 6 days of maintenance are performed for 2 times a day, the 7-14 days of maintenance are performed for 1 time a day, and the maintenance temperature is not lower than 25 ℃.
The invention has the beneficial effects that:
(1) The environment-friendly brick is prepared by taking solid wastes as raw materials, can fully perform synergistic treatment and effectively utilize solid waste resources, integrates the solid wastes generated by two fields, namely building demolition and decoration and the solid wastes generated by waste lithium battery treatment for synergistic utilization, solves the problems of disposal and reutilization of industrial solid wastes generated by building demolition and decoration garbage and waste lithium battery recycling treatment, and provides powerful technical support for the effective utilization of the solid wastes;
(2) According to the environment-friendly brick, the aggregate all components use the recycled raw materials, the decoration garbage recycled aggregate which is low in strength, difficult to effectively utilize and large in performance difference among different batches is applied in a large amount, wherein the total consumption of the decoration garbage recycled aggregate accounts for more than or equal to 45% of the consumption of the aggregate, a part of the decoration garbage recycled aggregate which is good in strength is used for dismantling the garbage recycled aggregate to build a skeleton with high strength in the environment-friendly brick, the decoration garbage recycled aggregate with low strength is used as the internal filling of the skeleton, the recycled micro powder is refilled in a gap generated by the aggregate accumulation to increase the compactness of the environment-friendly brick, the embedding and extruding effect of the skeleton is fully exerted, the defect that the decoration garbage recycled aggregate is poor in strength is overcome, the mechanical property of the environment-friendly brick after molding is improved, the working performance of the environment-friendly brick is ensured to be good, and the national standard requirement is met;
(3) The environment-friendly brick reasonably utilizes powder and dust collecting powder generated in the process of demolishing and decorating garbage crushing, and realizes 100% utilization of demolishing and decorating garbage treatment. The recycled micro powder is refined and shaped through grinding treatment, the specific surface area of the micro powder is increased, the fluidity and the reaction activity of the micro powder are increased, and in an environment-friendly brick aggregate system, the aggregate gaps can be better filled, the cement consumption and the fly ash consumption are reduced, the density and the strength of the environment-friendly brick are increased, and the thermal expansibility is reduced.
(4) The environment-friendly brick reasonably utilizes the waste pottery sand and calcium carbonate waste residue prepared by crushing and screening the waste iron-aluminum-vanadium slag generated by processing the waste lithium batteries after high-temperature calcination in a rotary kiln and the gypsum waste residue generated by desulfurizing the sulfur-containing waste gas generated by the waste high-temperature working procedure, enhances the performance of the environment-friendly brick, realizes the value-added utilization of the waste solids, has no secondary pollution in the whole process, and has good social benefit, environmental benefit and economic benefit.
Drawings
FIG. 1 is a flow chart of the preparation of the environmentally friendly brick in example 1 of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
Example 1:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 10 parts of (A); recycled aggregate of decoration garbage: 51 parts of a mixture; regenerating micro powder: 6 parts of (1); waste ceramic sand recycling: 6 parts; portland cement: 13 parts; fly ash: 7 parts; desulfurized gypsum: 5 parts of a mixture; water reducing agent: 1 part; an early strength agent: 1 part.
The demolished garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by demolishing buildings and roads, and the particle size of the demolished garbage recycled aggregate is 2.36-9.5mm; the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.15, and the grinding fineness is 0.045mm, and the passing rate is 85%; the waste ceramic sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste ceramic sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas produced in a waste utilization high-temperature process; the water reducing agent is polycyclic aromatic salt.
A preparation method of the environment-friendly brick is shown in figure 1 and comprises the following steps:
(1) Starting a garbage treatment production line, respectively feeding the demolished garbage and the decoration garbage into corresponding feeding ports, crushing and screening the demolished garbage into demolished garbage recycled aggregate of 2.36-9.5mm for later use, and crushing and screening the decoration garbage into decoration garbage recycled aggregate of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in the recovery process of waste lithium batteries into a dry ball mill according to the weight ratio of 1.15, grinding for 30min, wherein the grinding fineness is 0.045mm, the passing rate is 85%, and regenerated micro powder is prepared for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 5min, and then aging for 30min: 10 parts of demolition waste recycled aggregate, 51 parts of decoration waste recycled aggregate, 6 parts of recycled micro powder, 6 parts of waste ceramic sand, 13 parts of portland cement, 7 parts of fly ash, 5 parts of desulfurized gypsum, 1 part of water reducer and 1 part of early strength agent;
(4) Adding water into the dry-mixed materials, and mixing for 8min, wherein the water-glue ratio is 0.51;
(5) The mixed materials are sent into a brick press for molding, and the molding pressure is 15MPa;
(6) And placing the formed bricks in a storage yard, and carrying out water sweeping maintenance on the bricks, wherein the maintenance is carried out for 2 times every day in the first 6 days and 1 time every day in 7-14 days, the maintenance temperature is 26 ℃, and the environment-friendly bricks are obtained after the maintenance is finished.
Example 2:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 6 parts of (1); recycled aggregate of decoration garbage: 59 parts of a binder; regenerating micro powder: 3 parts of a mixture; waste ceramic sand recycling: 6 parts; portland cement: 14 parts of (1); fly ash: 7 parts; desulfurized gypsum: 2 parts of (1); water reducing agent: 2 parts of a mixture; early strength agent: 1 part.
The demolition garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by building and road demolition, and the particle size of the demolition garbage recycled aggregate is 2.36-9.5mm; the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.2, and the grinding fineness is 0.045mm, and the passing rate is 90%; the waste recycling pottery sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste recycling pottery sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas generated in a waste utilization high-temperature process; the water reducing agent is water-soluble resin sulfonate.
The preparation method of the environment-friendly brick comprises the following steps:
(1) Starting a garbage treatment production line, respectively feeding demolished garbage and decoration garbage into corresponding feed ports, crushing and screening the demolished garbage into demolished garbage recycled aggregate with the thickness of 2.36-9.5mm for later use, and crushing and screening the decoration garbage into decoration garbage recycled aggregate with the thickness of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in the recovery process of waste lithium batteries into a dry ball mill according to the weight ratio of 1.2, grinding for 110min, wherein the grinding fineness is 0.045mm, the passing rate is 90%, and regenerated micro powder is prepared for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 3min, and then aging for 30min: 6 parts of demolished garbage recycled aggregate, 59 parts of decoration garbage recycled aggregate, 3 parts of regenerated micro powder, 6 parts of waste ceramic sand, 14 parts of portland cement, 7 parts of fly ash, 2 parts of desulfurized gypsum, 1 part of water reducing agent and 2 parts of early strength agent;
(4) Adding water into the dry-mixed materials, and mixing for 12min, wherein the water-to-glue ratio is 0.6;
(5) The mixed material is sent into a brick press for molding, and the molding pressure is 17MPa;
(6) And placing the formed bricks in a storage yard, and carrying out water sweeping maintenance on the bricks, wherein the maintenance is carried out for 2 times every day in the first 6 days, the maintenance is carried out for 1 time every day in 7-14 days, the maintenance temperature is 25 ℃, and the environment-friendly bricks are obtained after the maintenance is finished.
Example 3:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 10 parts of (A); the aggregate recycled by the decoration garbage: 50 parts of a mixture; regenerating micro powder: 6 parts of (1); waste ceramic sand recycling: 8 parts of a mixture; portland cement: 10.5 parts; fly ash: 8 parts of a mixture; desulfurized gypsum: 6 parts; water reducing agent: 1.5 parts; early strength agent: 1 part.
The demolished garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by demolishing buildings and roads, and the particle size of the demolished garbage recycled aggregate is 2.36-9.5mm; the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.1, and the grinding fineness is 0.045mm, and the passing rate is 88%; the waste recycling pottery sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste recycling pottery sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas generated in a waste utilization high-temperature process; the water reducing agent consists of polycyclic aromatic salts and water-soluble resin sulfonate according to the weight ratio of 1.
The preparation method of the environment-friendly brick comprises the following steps:
(1) Starting a garbage treatment production line, respectively feeding demolished garbage and decoration garbage into corresponding feed ports, crushing and screening the demolished garbage into demolished garbage recycled aggregate with the thickness of 2.36-9.5mm for later use, and crushing and screening the decoration garbage into decoration garbage recycled aggregate with the thickness of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in a waste lithium battery recovery process into a dry-type ball mill according to a weight ratio of 1.1, grinding for 60min, wherein the grinding fineness is 0.045mm, the passing rate is 88%, and preparing regenerated micro powder for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 4min, and then aging for 30min: 10 parts of demolished garbage recycled aggregate, 50 parts of decoration garbage recycled aggregate, 6 parts of regenerated micro powder, 8 parts of waste ceramic sand, 10.5 parts of portland cement, 8 parts of fly ash, 6 parts of desulfurized gypsum, 1.5 parts of a water reducing agent and 1 part of an early strength agent;
(4) Adding water into the dry-mixed materials, and mixing for 10min, wherein the water-glue ratio is 0.54;
(5) The mixed materials are sent into a brick press for molding, and the molding pressure is 21MPa;
(6) And placing the formed bricks in a storage yard, and carrying out water sweeping maintenance on the bricks, wherein the maintenance is carried out for 2 times every day in the first 6 days, the maintenance is carried out for 1 time every 7-14 days, the maintenance temperature is 27 ℃, and the environment-friendly bricks are obtained after the maintenance is finished.
Example 4:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 12 parts of (1); the aggregate recycled by the decoration garbage: 46 parts of (a); regenerating micro powder: 5.2 parts of; waste ceramic sand utilization: 10 parts of a binder; portland cement: 8 parts of a mixture; fly ash: 10 parts of (A); desulfurized gypsum: 8 parts of a mixture; water reducing agent: 0.3 part; early strength agent: 0.5 part.
The demolition garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by building and road demolition, and the particle size of the demolition garbage recycled aggregate is 2.36-9.5mm; the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.17, and the grinding fineness is 0.045mm, and the passing rate is 90%; the waste ceramic sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste ceramic sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas produced in a waste utilization high-temperature process; the water reducing agent is polycyclic aromatic salt.
The preparation method of the environment-friendly brick comprises the following steps:
(1) Starting a garbage treatment production line, respectively feeding demolished garbage and decoration garbage into corresponding feed ports, crushing and screening the demolished garbage into demolished garbage recycled aggregate with the thickness of 2.36-9.5mm for later use, and crushing and screening the decoration garbage into decoration garbage recycled aggregate with the thickness of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in a waste lithium battery recovery process into a dry-type ball mill according to a weight ratio of 1.17, grinding for 120min, wherein the grinding fineness is 0.045mm, the passing rate is 90%, and preparing regenerated micro powder for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 3.5min, and then aging for 30min: 12 parts of demolition waste recycled aggregate, 46 parts of decoration waste recycled aggregate, 5.2 parts of recycled micro powder, 10 parts of waste ceramic sand, 8 parts of portland cement, 10 parts of fly ash, 8 parts of desulfurized gypsum, 0.3 part of water reducer and 0.5 part of early strength agent;
(4) Adding water into the dry-mixed materials, and mixing for 9min, wherein the water-to-glue ratio is 0.6;
(5) The mixed materials are sent into a brick press for molding, and the molding pressure is 19MPa;
(6) And placing the formed bricks in a yard, carrying out water sweeping maintenance on the bricks, maintaining for 2 times a day in the first 6 days, maintaining for 1 time a day in 7-14 days at the maintenance temperature of 25 ℃, and obtaining the environment-friendly bricks after the maintenance is finished.
Example 5:
an environment-friendly brick is prepared from the following raw materials in parts by weight: removing the garbage recycled aggregate: 7 parts; the aggregate recycled by the decoration garbage: 50 parts of a mixture; regenerating micro powder: 5 parts of a mixture; waste ceramic sand recycling: 6 parts of (1); portland cement: 14.5 parts; fly ash: 8.5 parts; desulfurized gypsum: 3 parts of a mixture; water reducing agent: 0.5 part; early strength agent: 1 part.
The demolished garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by demolishing buildings and roads, and the particle size of the demolished garbage recycled aggregate is 2.36-9.5mm; the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.12, and the grinding fineness is 0.045mm, and the passing rate is 82%; the waste recycling pottery sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste recycling pottery sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas generated in a waste utilization high-temperature process; the water reducing agent is polycyclic aromatic salt.
The preparation method of the environment-friendly brick comprises the following steps:
(1) Starting a garbage treatment production line, respectively feeding demolished garbage and decoration garbage into corresponding feed ports, crushing and screening the demolished garbage into demolished garbage recycled aggregate with the thickness of 2.36-9.5mm for later use, and crushing and screening the decoration garbage into decoration garbage recycled aggregate with the thickness of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in a waste lithium battery recovery process into a dry-type ball mill according to a weight ratio of 1.12, grinding for 40min, wherein the grinding fineness is 0.045mm, the passing rate is 82%, and regenerated micro powder is prepared for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 4.5min, and then aging for 30min: 7 parts of demolition waste recycled aggregate, 50 parts of decoration waste recycled aggregate, 5 parts of recycled micro powder, 6 parts of waste ceramic sand, 14.5 parts of portland cement, 8.5 parts of fly ash, 3 parts of desulfurized gypsum, 0.5 part of water reducer and 1 part of early strength agent;
(4) Adding water into the dry-mixed materials, and mixing for 11min, wherein the water-glue ratio is 0.58;
(5) The mixed material is sent into a brick press for molding, and the molding pressure is 25MPa;
(6) And placing the formed bricks in a storage yard, and carrying out water sweeping maintenance on the bricks, wherein the maintenance is carried out for 2 times every day in the first 6 days, the maintenance is carried out for 1 time every 7-14 days, the maintenance temperature is 30 ℃, and the environment-friendly bricks are obtained after the maintenance is finished.
Comparative example 1: (compared with the example 1, the environment-friendly brick does not contain recycled aggregate for garbage removal)
An environment-friendly brick is prepared from the following raw materials in parts by weight: the aggregate recycled by the decoration garbage: 61 parts; regenerating micro powder: 6 parts; waste ceramic sand recycling: 6 parts of (1); portland cement: 13 parts; fly ash: 7 parts; desulfurized gypsum: 5 parts of a mixture; water reducing agent: 1 part; an early strength agent: 1 part.
The decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated by building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, wherein the powder is obtained by grinding fine powder and dust collecting powder generated in a decoration garbage treatment production line, the calcium carbonate waste residues are generated in a waste lithium battery recovery process, and the particle size of the powder is less than 0.15mm; the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues according to the weight ratio of 1.15, and the grinding fineness is 0.045mm, and the passing rate is 85%; the waste recycling pottery sand is obtained by calcining, crushing and screening waste iron-aluminum alum slag generated by processing waste lithium batteries, and the particle size of the waste recycling pottery sand is 0.15-4.75mm; the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas produced in a waste utilization high-temperature process; the water reducing agent is polycyclic aromatic salt.
The preparation method of the environment-friendly brick comprises the following steps:
(1) Starting a garbage treatment production line, conveying the decoration garbage into a corresponding feeding port, crushing and screening the decoration garbage into decoration garbage recycled aggregate of 0.15-4.75mm for later use;
(2) Putting powder which is less than 0.15mm and is generated after crushing and screening of a garbage treatment production line and calcium carbonate waste residues generated in the recovery process of waste lithium batteries into a dry ball mill according to the weight ratio of 1.15, grinding for 30min, wherein the grinding fineness is 0.045mm, the passing rate is 85%, and regenerated micro powder is prepared for later use;
(3) Mixing the treated materials according to the following weight parts, carrying out dry mixing for 5min, and then aging for 30min: 51 parts of decorative garbage recycled aggregate, 6 parts of recycled micro powder, 6 parts of waste ceramic sand, 13 parts of portland cement, 7 parts of fly ash, 5 parts of desulfurized gypsum, 2 parts of water reducing agent and 1 part of early strength admixture;
(4) Adding water into the dry-mixed materials, and mixing for 8min, wherein the water-glue ratio is 0.51;
(5) The mixed materials are sent into a brick press for molding, and the molding pressure is 15MPa;
(6) And placing the formed bricks in a storage yard, and carrying out water sweeping maintenance on the bricks, wherein the maintenance is carried out for 2 times every day in the first 6 days and 1 time every day in 7-14 days, the maintenance temperature is 26 ℃, and the environment-friendly bricks are obtained after the maintenance is finished.
Test example: the environmental protection bricks of examples 1 to 5 and comparative example 1 were subjected to performance tests, and the results are shown in table 1.
Table 1: environmental protection brick performance detection result
As can be seen from Table 1, the compression strength of the environment-friendly brick of the invention can reach more than 18.55MPa, and the density can reach 1889Kg/m 3 The water absorption rate is less than 12.8%, which shows that the environment-friendly brick has good compression resistance and density, also has low water absorption rate, and has good environmental protection benefit, economic benefit and social benefit on the premise of ensuring that the performance meets the national standard requirement.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such modifications are intended to be included in the scope of the present invention.
Claims (10)
1. An environmental protection brick is characterized in that: the feed is prepared from the following raw materials in parts by weight:
dismantling the garbage recycled aggregate: 6-12 parts;
recycled aggregate of decoration garbage: 45-60 parts;
regenerating micro powder: 3-8 parts;
waste ceramic sand utilization: 3-10 parts;
portland cement: 8-20 parts;
fly ash: 7-10 parts;
desulfurized gypsum: 2-8 parts;
water reducing agent: 0.3-2 parts;
early strength agent: 0.5-2 parts.
2. The environmental protection brick according to claim 1, wherein: the environment-friendly brick is prepared from the following raw materials in parts by weight:
removing the garbage recycled aggregate: 7-8 parts;
recycled aggregate of decoration garbage: 45-55 parts of a stabilizer;
regenerating micro powder: 3-6 parts;
waste ceramic sand recycling: 3-7 parts;
portland cement: 10-15 parts;
fly ash: 8-9 parts;
desulfurized gypsum: 2-4 parts;
water reducing agent: 0.3-1 part;
an early strength agent: 0.5-1 part.
3. The environmental protection brick according to claim 1, wherein: the demolished garbage recycled aggregate is obtained by crushing and screening waste concrete blocks and waste sandstone particles generated by demolishing buildings and roads, and the particle size of the demolished garbage recycled aggregate is 2.36-9.5mm.
4. The environmental protection brick according to claim 1, characterized in that: the decoration garbage recycled aggregate is obtained by crushing and screening waste red bricks, waste sand ash, waste ceramic tiles, waste light partition bricks, waste water mud tiles, waste sandy soil and waste ceramic tile glass generated in building decoration, and the particle size of the decoration garbage recycled aggregate is 0.15-4.75mm.
5. The environmental protection brick according to claim 1, characterized in that: the regenerated micro powder is obtained by mixing and grinding powder and calcium carbonate waste residues, the powder is fine powder and dust collecting powder generated in a demolition and decoration garbage treatment production line, and the calcium carbonate waste residues are generated in a waste lithium battery recovery process.
6. The environmental protection brick according to claim 5, wherein: the grain diameter of the powder is less than 0.15mm.
7. The environmental protection brick according to claim 5, wherein: the regenerated micro powder is obtained by mixing and grinding the powder and the calcium carbonate waste residue according to the weight ratio of 1 (0.1-0.2), and the grinding fineness is 0.045mm, and the passing rate is 80% -90%.
8. The environmental protection brick according to claim 1, characterized in that: the waste ceramic sand is obtained by calcining, crushing and screening waste iron-aluminum alum residues generated by processing waste lithium batteries, and the particle size of the waste ceramic sand is 0.15-4.75mm.
9. The environmental protection brick according to claim 1, characterized in that: the desulfurized gypsum is gypsum waste residue powder produced by desulfurizing sulfur-containing waste gas produced in a waste utilization high-temperature process.
10. A method for preparing the environment-friendly brick as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps: the preparation method comprises the following steps of carrying out dry mixing on the raw materials, then aging, adding water, stirring, carrying out compression molding, and carrying out curing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109485338A (en) * | 2018-11-22 | 2019-03-19 | 广西南宁市德磊砖业有限公司 | A kind of construction refuse regenerated aggregate pavement brick and preparation method thereof |
| CN112390577A (en) * | 2020-11-16 | 2021-02-23 | 北京建工资源循环利用投资有限公司 | Alkali-resistant pavement brick prepared from construction waste and preparation process thereof |
| CN113816711A (en) * | 2021-09-29 | 2021-12-21 | 湖南中邦再生资源科技有限公司 | Foamed concrete block and preparation method and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109485338A (en) * | 2018-11-22 | 2019-03-19 | 广西南宁市德磊砖业有限公司 | A kind of construction refuse regenerated aggregate pavement brick and preparation method thereof |
| CN112390577A (en) * | 2020-11-16 | 2021-02-23 | 北京建工资源循环利用投资有限公司 | Alkali-resistant pavement brick prepared from construction waste and preparation process thereof |
| CN113816711A (en) * | 2021-09-29 | 2021-12-21 | 湖南中邦再生资源科技有限公司 | Foamed concrete block and preparation method and application thereof |
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Application publication date: 20230103 |