CN106587910B - Preparation method of environment-friendly low-cost sintered brick - Google Patents
Preparation method of environment-friendly low-cost sintered brick Download PDFInfo
- Publication number
- CN106587910B CN106587910B CN201611223568.5A CN201611223568A CN106587910B CN 106587910 B CN106587910 B CN 106587910B CN 201611223568 A CN201611223568 A CN 201611223568A CN 106587910 B CN106587910 B CN 106587910B
- Authority
- CN
- China
- Prior art keywords
- parts
- weight
- environment
- clay
- friendly low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3215—Barium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Catalysts (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Processing Of Solid Wastes (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a preparation method of an environment-friendly low-cost baked brick, which comprises the following steps: sending the clay powder into a crucible, preserving heat at 480 ℃ of 400-; mixing and stirring the solid construction waste, iron ore tailings, carbon nano tubes, barite, foundation excavation soil, talcum powder, expanded perlite, water glass and modified clay uniformly, forming, drying and sintering to prepare the environment-friendly low-cost sintered brick. The invention recycles the waste, not only can reduce the cost, but also can reduce the cracking property of the brick and avoid the leakage of rainwater.
Description
Technical Field
The invention relates to the technical field of sintered bricks, in particular to a preparation method of an environment-friendly low-cost sintered brick.
Background
The sintered brick, also called clay brick, is an artificial small-sized block material for building, mainly uses clay as raw material, and is made up by using clay through the processes of clay treatment, forming, drying and roasting, and has solid and hollow portions respectively. In China, the wall material accounts for about 70% of the whole building construction material, and the clay brick still dominates the wall material. The clay resources required for producing clay bricks belong to the higher-quality clay in arable land, so the destruction to land resources is visible. For various reasons, China is still one of a few countries in the world which take clay bricks as main wall materials, a novel wall material which saves land and utilizes waste is vigorously developed, comprehensive utilization of resources is promoted, and development of a novel high-quality sintered brick capable of replacing clay bricks is still an important task of practitioners in related fields at present.
Disclosure of Invention
The invention provides a preparation method of an environment-friendly low-cost sintered brick, which recycles waste, can reduce the cost, can reduce the cracking property of the brick and avoids rainwater leakage.
The invention provides a preparation method of an environment-friendly low-cost baked brick, which comprises the following steps: sending the clay powder into a crucible, preserving heat at 480 ℃ of 400-; mixing and stirring the solid construction waste, iron ore tailings, carbon nano tubes, barite, foundation excavation soil, talcum powder, expanded perlite, water glass and modified clay uniformly, forming, drying and sintering to prepare the environment-friendly low-cost sintered brick.
Preferably, the concentration of the hydrochloric acid is 1.2-1.6 mol/L, and the weight ratio of the clay powder to the hydrochloric acid is 60-80: 160-180.
Preferably, the weight ratio of the furfural to the clay powder is 15-25: 60-80.
Preferably, 40-80 parts of construction solid waste, 10-30 parts of iron ore tailings, 8-20 parts of carbon nano tubes, 20-40 parts of barite, 10-18 parts of foundation excavation soil, 10-18 parts of talcum powder, 30-50 parts of expanded perlite, 20-34 parts of water glass and 40-80 parts of modified clay are mixed and stirred uniformly according to parts by weight.
Preferably, the reaction mixture is sent into a high-pressure reaction kettle, and the holding time at the temperature of 300 ℃ and 400 ℃ is 0.5-2.5 h.
Preferably, the heat preservation time at the temperature of 600-700 ℃ is 40-60min under the protection of nitrogen.
Preferably, the preparation method of the environment-friendly low-cost sintered brick comprises the following steps of conveying 60-80 parts by weight of clay powder into a crucible, preserving heat at 480 ℃ of 400-80 min, cooling to room temperature, adding 180 parts by weight of 160-80 parts by weight of hydrochloric acid with the concentration of 1.2-1.6 mol/L, stirring at 65-78 ℃ for 30-60min, filtering, washing to be neutral, drying, adding 15-25 parts by weight of furfural, uniformly mixing, conveying into a high-pressure reaction kettle, setting the temperature to 300-400 ℃ and preserving heat for 0.5-2.5h, preserving heat at 700 ℃ of 600-80 ℃ for 40-60min under the protection of nitrogen, cooling, washing to be neutral, drying, crushing to obtain modified clay, stirring 40-80 parts by weight of building solid waste, 10-30 parts by weight of iron ore tailing sand, 8-20 parts by weight of carbon nano tubes, 20-40 parts by weight of recrystallized sand, 10-18 parts by weight of foundation excavation soil, 10-18 parts by weight of expanded perlite, 20-34 parts by weight of water, 80-80 parts by weight of glass, 40-20 parts by weight of modified glass, uniformly stirring, drying, and molding to obtain the environment-friendly low-.
In the modified clay, clay powder is subjected to heat treatment in a crucible, is activated by hydrochloric acid, is subjected to immersion treatment with furfural in a high-pressure reaction kettle, and is carbonized at high temperature, so that a product is in a network structure, is rich in a large amount of mesoporous structures, also contains a small amount of micropores and macropores, has triple pore size distribution, is rich in raw material sources and low in price, is matched with building solid waste, iron ore tailings, carbon nanotubes, barite sand, foundation excavated soil, talcum powder, expanded perlite and water glass, has strong adsorption capacity, and can be normally used after being sintered, the problem of treatment of a large amount of building solid waste generated during waste emulsion treatment is solved, the building solid waste is recycled, and iron ore tailing resources are saved.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A preparation method of an environment-friendly low-cost baked brick comprises the following steps: feeding clay powder into a crucible, preserving heat at 480 ℃, cooling to room temperature, adding hydrochloric acid, stirring at 65 ℃, filtering, washing to be neutral, drying, adding furfural, mixing uniformly, feeding into a high-pressure reaction kettle, preserving heat at 400 ℃, preserving heat at 600 ℃ under the protection of nitrogen, cooling, washing to be neutral, drying, and crushing to obtain modified clay; mixing and stirring the solid construction waste, iron ore tailings, carbon nano tubes, barite, foundation excavation soil, talcum powder, expanded perlite, water glass and modified clay uniformly, forming, drying and sintering to prepare the environment-friendly low-cost sintered brick.
Example 2
A preparation method of an environment-friendly low-cost baked brick comprises the following steps: feeding clay powder into a crucible, preserving heat at 400 ℃, cooling to room temperature, adding hydrochloric acid, stirring at 78 ℃, filtering, washing to be neutral, drying, adding furfural, mixing uniformly, feeding into a high-pressure reaction kettle, preserving heat at 300 ℃, preserving heat at 700 ℃ under the protection of nitrogen, cooling, washing to be neutral, drying, and crushing to obtain modified clay; mixing and stirring the solid construction waste, iron ore tailings, carbon nano tubes, barite, foundation excavation soil, talcum powder, expanded perlite, water glass and modified clay uniformly, forming, drying and sintering to prepare the environment-friendly low-cost sintered brick.
Example 3
A preparation method of an environment-friendly low-cost sintered brick comprises the following steps of conveying 60 parts by weight of clay powder into a crucible, preserving heat for 60min at 480 ℃, cooling to room temperature, adding 180 parts of hydrochloric acid with the concentration of 1.2 mol/L, stirring for 30min at 78 ℃, filtering, washing until the mixture is neutral, drying, adding 25 parts of furfural, uniformly mixing, conveying into a high-pressure reaction kettle, preserving heat for 2.5h at 300 ℃, preserving heat for 60min at 600 ℃ under the protection of nitrogen, cooling, washing until the mixture is neutral, drying and crushing to obtain modified clay, and uniformly mixing and stirring 40 parts by weight of building solid waste, 30 parts of iron ore tailings, 8 parts of carbon nano tubes, 40 parts of heavy crystal sand, 10 parts of foundation digging soil, 18 parts of talcum powder, 30 parts of expanded perlite, 34 parts of water glass and 40 parts of modified clay, molding, drying and sintering to obtain the environment-friendly low-cost sintered brick.
Example 4
A preparation method of an environment-friendly low-cost sintered brick comprises the following steps of conveying 80 parts by weight of clay powder into a crucible, preserving heat for 80min at 400 ℃, cooling to room temperature, adding 160 parts of hydrochloric acid with the concentration of 1.6 mol/L, stirring for 60min at 65 ℃, filtering, washing until the mixture is neutral, drying, adding 15 parts of furfural, uniformly mixing, conveying into a high-pressure reaction kettle, preserving heat for 0.5h at 400 ℃, preserving heat for 40min at 700 ℃ under the protection of nitrogen, cooling, washing until the mixture is neutral, drying and crushing to obtain modified clay, and uniformly mixing and stirring 80 parts by weight of building solid waste, 10 parts of iron ore tailings, 20 parts of carbon nano tubes, 20 parts of recrystallized sand, 18 parts of foundation excavation soil, 10 parts of talcum powder, 50 parts of expanded perlite, 20 parts of water glass and 80 parts of modified clay, molding, drying and sintering to obtain the environment-friendly low-cost sintered brick.
Example 5
A preparation method of an environment-friendly low-cost sintered brick comprises the following steps of conveying 75 parts by weight of clay powder into a crucible, preserving heat for 75min at 465 ℃, cooling to room temperature, adding 175 parts by weight of hydrochloric acid with the concentration of 1.4 mol/L, stirring for 55min at 68 ℃, filtering, washing until the clay powder is neutral, drying, adding 22 parts by weight of furfural, uniformly mixing, conveying into a high-pressure reaction kettle, preserving heat for 2h at 340 ℃, preserving heat for 55min at 660 ℃ under the protection of nitrogen, cooling, washing until the clay powder is neutral, drying and crushing to obtain modified clay, and uniformly mixing and stirring 65 parts by weight of construction solid waste, 24 parts by weight of iron ore tailings, 14 parts by weight of carbon nanotubes, 32 parts by weight of recrystallized sand, 16 parts by weight of foundation excavation soil, 14 parts by weight of talcum powder, 42 parts by weight of expanded perlite, 32 parts by weight of water glass and 60 parts by weight of modified clay, molding, drying and sintering to obtain the environment-friendly low-cost.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. The preparation method of the environment-friendly low-cost sintered brick is characterized by comprising the following steps: sending the clay powder into a crucible, preserving heat at 480 ℃ of 400-; mixing and stirring the building solid waste, iron ore tailings, carbon nano tubes, barite, foundation excavation soil, talcum powder, expanded perlite, water glass and modified clay uniformly, forming, drying and sintering to prepare the environment-friendly low-cost sintered brick;
wherein the concentration of the hydrochloric acid is 1.2-1.6 mol/L, and the weight ratio of the clay powder to the hydrochloric acid is 60-80: 160-180;
wherein the weight ratio of the furfural to the clay powder is 15-25: 60-80 parts;
wherein, 40-80 parts of construction solid waste, 10-30 parts of iron ore tailings, 8-20 parts of carbon nano tubes, 20-40 parts of barite, 10-18 parts of foundation excavation soil, 10-18 parts of talcum powder, 30-50 parts of expanded perlite, 20-34 parts of water glass and 40-80 parts of modified clay are mixed and stirred uniformly according to the parts by weight.
2. The method for preparing the environmental-friendly low-cost sintered brick as claimed in claim 1, wherein the brick is fed into a high-pressure reaction kettle, and the holding time at the temperature of 300 ℃ and 400 ℃ is 0.5-2.5 h.
3. The method for preparing environment-friendly and low-cost sintered bricks as claimed in claim 1, wherein the heat preservation time at 600-700 ℃ is 40-60min under the protection of nitrogen.
4. The method for preparing the environment-friendly low-cost sintered brick as claimed in claim 1, comprising the steps of feeding 60-80 parts by weight of clay powder into a crucible, preserving heat at 480 ℃ of 400-80 min, cooling to room temperature, adding 180 parts by weight of 160-180 parts by weight of hydrochloric acid with the concentration of 1.2-1.6 mol/L, stirring at 65-78 ℃ for 30-60min, filtering, washing to be neutral, drying, adding 15-25 parts by weight of furfural, mixing uniformly, feeding into a high-pressure reaction kettle, setting the temperature to be 300-400 ℃ and preserving heat for 0.5-2.5h, preserving heat at 700 ℃ of 600-78 ℃ for 40-60min under the protection of nitrogen, cooling, washing to be neutral, drying and crushing to obtain the modified clay, stirring 40-80 parts by weight of building solid waste, 10-30 parts by weight of iron ore tailings, 8-20 parts by weight of carbon nanotubes, 20-40 parts by weight of recrystallized sand, 10-18 parts by weight of ground-digging soil, 10-18 parts by weight of talcum powder, 30-50 parts by weight of expanded glass, 20-34 parts by weight of perlite, 20-34 parts by weight of modified water, mixing uniformly, and drying to obtain the environment-friendly low-cost sintered brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223568.5A CN106587910B (en) | 2016-12-27 | 2016-12-27 | Preparation method of environment-friendly low-cost sintered brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223568.5A CN106587910B (en) | 2016-12-27 | 2016-12-27 | Preparation method of environment-friendly low-cost sintered brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106587910A CN106587910A (en) | 2017-04-26 |
| CN106587910B true CN106587910B (en) | 2020-08-07 |
Family
ID=58602561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223568.5A Active CN106587910B (en) | 2016-12-27 | 2016-12-27 | Preparation method of environment-friendly low-cost sintered brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106587910B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107698242A (en) * | 2017-09-30 | 2018-02-16 | 望江县中山新型建材有限公司 | A kind of light thermal-insulation fired brick for adding building waste |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140241A (en) * | 2014-07-30 | 2014-11-12 | 新密市环新生活垃圾处理有限公司 | Solid waste muck sintered brick and preparing method thereof |
| CN104557129A (en) * | 2015-02-04 | 2015-04-29 | 河北建材职业技术学院 | Insulated sintered brick and preparation method thereof |
| CN105948711A (en) * | 2016-04-25 | 2016-09-21 | 广西大学 | Fired brick and preparation method thereof |
| CN106242509A (en) * | 2016-07-15 | 2016-12-21 | 丰宁丰煊新型建筑材料有限公司 | A kind of clinker bricks in environmental protection and preparation method thereof |
-
2016
- 2016-12-27 CN CN201611223568.5A patent/CN106587910B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140241A (en) * | 2014-07-30 | 2014-11-12 | 新密市环新生活垃圾处理有限公司 | Solid waste muck sintered brick and preparing method thereof |
| CN104557129A (en) * | 2015-02-04 | 2015-04-29 | 河北建材职业技术学院 | Insulated sintered brick and preparation method thereof |
| CN105948711A (en) * | 2016-04-25 | 2016-09-21 | 广西大学 | Fired brick and preparation method thereof |
| CN106242509A (en) * | 2016-07-15 | 2016-12-21 | 丰宁丰煊新型建筑材料有限公司 | A kind of clinker bricks in environmental protection and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106587910A (en) | 2017-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107235684B (en) | Recycled fine aggregate ultrahigh-performance concrete and use method thereof | |
| CN102153326B (en) | Curing agent for soft soil and application thereof | |
| CN105622023B (en) | A kind of sludge curing agent using clinker | |
| CN107903017A (en) | A kind of ferronickel slag construction material and preparation method thereof | |
| CN106045477A (en) | Preparation method of ferronickel residue sintered water-permeable bricks | |
| WO2018086278A1 (en) | Lightweight self-insulating block | |
| CN104986789A (en) | Method for preparing alpha-semi-hydrated gypsum in controllable mode through acid wastewater produced by producing titanium dioxide | |
| CN104446285A (en) | Method for preparing concrete product from stale refuse | |
| CN105948711B (en) | A kind of fired brick and preparation method thereof | |
| CN104478329B (en) | Preparation method for producing autoclaved aerated concrete block by using antimony ore tailing | |
| CN108424047B (en) | Red mud-based rapid-setting grouting material suitable for grouting reinforcement and treatment of sandy soil stratum | |
| CN103771894A (en) | Aerated brick with anti-freezing function and preparation method thereof | |
| CN106587910B (en) | Preparation method of environment-friendly low-cost sintered brick | |
| CN104371703A (en) | Method for preparing oil fracturing proppant from high-aluminum fly ash | |
| CN102336533A (en) | Alunite concrete expanding agent | |
| CN107777946A (en) | A kind of high-strength environment-friendly brick and preparation method thereof | |
| CN104609837B (en) | Method of producing haydite for thermal insulation block by utilizing steel slag quenched with wind | |
| CN102515581A (en) | Method for preparing ordinary portland cement by taking gold mine tailings as raw materials | |
| CN106495663A (en) | A kind of light self-insulation building block | |
| CN103896543B (en) | Baking-free ceramicite taking brown coal germanium tailings as primary raw material and preparation method thereof | |
| CN103833290B (en) | What utilize foam cement waste material to prepare is non-burning brick and preparation method thereof | |
| CN103232181A (en) | Preparation method of titanium dioxide slag concrete additive | |
| CN107721349A (en) | A kind of autoclaved lime-sand brick using industrial residue and construction waste as raw material | |
| CN106495662A (en) | A kind of heat insulation building block of the waste material of building waste containing air entrained concrete | |
| CN104478377B (en) | Self thermal insulation block produced by heavy-mineral waste residues and preparation method of self thermal insulation block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |