CN111548071A - Environment-friendly regenerated baking-free brick and preparation method thereof - Google Patents
Environment-friendly regenerated baking-free brick and preparation method thereof Download PDFInfo
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- CN111548071A CN111548071A CN202010434740.1A CN202010434740A CN111548071A CN 111548071 A CN111548071 A CN 111548071A CN 202010434740 A CN202010434740 A CN 202010434740A CN 111548071 A CN111548071 A CN 111548071A
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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
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/50—Derivatives of urea, thiourea, cyanamide, guanidine or urethanes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention discloses an environment-friendly regenerative baking-free brick and a preparation method thereof, belonging to the technical field of building materials and energy conservation and environmental protection. It includes: the method comprises the steps of pretreating raw materials, mixing the raw materials and performing compression molding, wherein the pretreating of the raw materials comprises the steps of recovering construction waste and waste glass, mixing treated construction waste reclaimed materials and waste glass reclaimed materials with an adhesive, brown corundum powder and water to obtain raw material slurry, performing compression molding on the raw material slurry, and performing maintenance to obtain the baking-free brick. The invention realizes the resource utilization of the construction waste and the waste glass, and is beneficial to reducing the types of raw materials for preparing the baking-free brick and the consumption of other raw materials, thereby reducing the transportation cost and improving the economic benefit, so that the method can be widely applied to the treatment of the construction waste and the waste glass, and is beneficial to energy conservation and environmental protection.
Description
Technical Field
The invention relates to an environment-friendly regenerative baking-free brick and a preparation method thereof, belonging to the technical field of building materials and energy conservation and environmental protection.
Background
With the development of social economy and the acceleration of the process of modernized construction, the construction industry of China is also rapidly developed, and the consumption of resources such as natural sand, clay and the like is huge, thereby causing great pressure on the sustainable development of ecological environment and social economy. Meanwhile, along with the demolition of a large number of old buildings in the processes of infrastructure construction, real estate development and old urban area transformation, the quantity of construction waste generated by demolition is increasing day by day, and according to relevant statistics, the quantity of the construction waste in China accounts for 30% -40% of the total quantity of the urban waste. At present, the main treatment method of the construction waste in China is open-air stacking or landfill, which not only occupies a large amount of land resources, but also causes serious environmental pollution and resource waste.
The construction waste is a general term for waste soil, waste concrete, waste brick and stone and other wastes generated in the production activities of the construction industry such as demolition, construction, decoration, repair and the like. The waste concrete and the waste masonry are the largest components of the construction waste, the waste concrete and the waste masonry can replace natural aggregate or be used as a road foundation after being crushed and screened, the recycled material for the construction waste is recycled aggregate, but the application of the recycled aggregate in the structural concrete is limited within 20%, and the consumption of the recycled aggregate for the construction waste is limited as the road foundation, so that the resource recycling of the construction waste still needs to be further researched and developed.
In the prior art, patent application with publication number CN109133832A discloses a sintering method of a building garbage baked brick, which comprises the steps of crushing building garbage into recycled aggregate, mixing the recycled aggregate with slag micro powder, coal slag, caustic sludge, gypsum powder and cement to form a dry material, adding water and stirring to obtain slurry, building the slurry into a mold, and moving the mold into a kiln to sinter to obtain the building baked brick. The construction waste is used as recycled aggregate to be mixed with other industrial byproducts such as slag micro powder, coal slag, alkaline residue and the like, and then cement, gypsum powder and water are added to prepare the raw material slurry of the sintered brick, so that the resource utilization of the construction waste and various industrial byproducts is realized, the pollution to the environment is reduced, and the sintered brick for construction with excellent mechanical property is prepared. However, the preparation of the sintered brick requires placing the formed brick in a kiln for high-temperature sintering for 4-5 hours, which consumes huge energy resources, and for the construction material production enterprises, the source of the construction waste itself is uncertain, and the place where the construction waste is generated is also uncertain, and the transportation cost of the construction waste directly leads to the increase of the cost of using the construction waste, and if the production site is moved to the vicinity of the production place of the construction waste, the transportation cost of other raw materials is also increased, which is not beneficial for the production enterprises to improve the economic benefit, thereby correspondingly limiting the application of the method for recycling the construction waste.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an environment-friendly regenerated baking-free brick and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme: a preparation method of an environment-friendly regenerative baking-free brick comprises the following steps:
s1, raw material pretreatment: and (3) recycling the construction waste and the waste glass to obtain a construction waste reclaimed material and a waste glass reclaimed material.
The recycling treatment process of the construction waste is crushing and screening, and materials with the particle size smaller than 5mm are screened out to obtain the construction waste recycled material.
The recycling treatment process of the waste glass comprises the following steps:
s101, crushing waste glass into cullet blocks, cleaning the cullet blocks, and grinding the cleaned cullet blocks into powder to obtain waste glass powder;
and S102, adding water glass and quicklime into the waste glass powder, uniformly mixing and stirring, adding water, stirring, and crushing the mixture again after the mixture is solidified to obtain the waste glass reclaimed material.
S2, mixing the raw materials: weighing 75-90 parts by weight of construction waste reclaimed materials, 8-13 parts by weight of waste glass reclaimed materials, 0.05-0.18 part by weight of adhesive and 0.3-0.5 part by weight of brown corundum powder, uniformly stirring, and mixing with water to obtain raw material slurry; the adhesive is at least one of metal chloride or phosphate.
S3, press forming: and pressing and forming the raw material slurry, and curing to obtain the baking-free brick.
The invention firstly recycles the construction waste and the waste glass, obtains the construction waste reclaimed material and the waste glass reclaimed material through treatment, and prepares the regeneration baking-free brick by taking the construction waste reclaimed material and the waste glass reclaimed material after treatment as main raw materials.
The construction waste adopted by the invention comprises waste concrete, waste mortar and waste brick tile blocks, the construction waste is crushed and screened, the crushed construction waste is screened into several types with different particle size grades, and in the preparation process, several types of construction waste regeneration materials with different particle sizes are matched and used as raw materials according to the requirements of bricks to be prepared.
The main components of the waste glass are silicon dioxide and silicate double salt, the glass is firstly crushed to be crushed into glass fragments, then the glass fragments are cleaned to remove dirt such as sand, stone, soil and the like attached to the glass, and the dirt attached to the waste glass is collided and impacted while the waste glass is crushed, so that the waste glass is easily separated from the glass during cleaning. Meanwhile, the glass can be washed by washing or stirring, and broken glass blocks collide with each other or with the stirring blades in the stirring process, so that the broken glass blocks are favorably crushed. And after cleaning, draining water, and grinding the broken glass blocks, wherein the waste glass powder can improve the mechanical property and durability of the regenerated baking-free brick, has certain cementing capacity, and has important influence on the strength of the finished product after solidification molding and maintenance of the baking-free brick. Mixing waste glass powder with water glass, quicklime and water to form viscous pasty slurry, mixing the water glass, the quicklime and the water to form an alkaline and high-temperature reaction environment, reacting with the waste glass powder to form unsaturated active bonds on the surface of the waste glass powder, and easily promoting hydration; active components such as soluble silicon dioxide and aluminum oxide contained in the glass are easy to form a structure similar to a silicon-rich layer on the surface of the glass powder in the reaction, so that the glass powder can react with other raw materials of the regenerated brick to form gel after being mixed with the other raw materials, and the compactness of the baking-free brick is improved.
Furthermore, the construction waste recycled material comprises recycled coarse material, recycled fine material and recycled powder, the particle size of the recycled coarse material is 2.5-5 mm, the particle size of the recycled fine material is 0.075-2.5 mm, and the particle size of the recycled powder is less than 0.075 mm.
Furthermore, in the construction waste recycled material, the mass ratio of the recycled coarse material to the recycled fine material to the recycled powder material is 1: 2.5-3.6: 2.2 to 3.
Further, in S101, a dodecyl guanidine salt is added to a cleaning solution for cleaning the cullet pieces, wherein the dodecyl guanidine salt is at least one of dodecyl guanidine hydrochloride, dodecyl guanidine acetate and dodecyl guanidine sulfate.
By using the dodecyl guanidine salt as the cleaning additive, the dodecyl guanidine salt can not only wash away organic dirt on the surface of the broken glass blocks and is beneficial to improving the cleaning effect, but also is alkaline and positively charged after being dissolved in water, generates single crystals on the surface of the broken glass blocks after acting on the broken glass blocks and is beneficial to improving the reactivity of the waste glass reworked material.
Furthermore, the addition amount of the dodecyl guanidine salt in the cleaning solution is 0.03-0.08 g/L.
Furthermore, the mass ratio of the glass cullet pieces to the cleaning liquid is 1: 2.3-2.8. The broken glass blocks and the cleaning solution with the concentration are mixed and stirred according to the proportion, so that the reaction is promoted and the reaction activity is improved.
Further, in the step S102, the mixture is obtained by mixing 35-42 parts by weight of waste glass powder, 0.1-0.15 part by weight of water glass, 2-5 parts by weight of quicklime and 20-28 parts by weight of water. The waste glass powder is regenerated by adopting the processing aid and water in parts by weight, so that thick paste-like slurry is formed in the mixing process, rapid solidification is facilitated, the reaction progress is conveniently controlled, and the phenomenon that the waste glass powder loses reactivity after excessive reaction is avoided.
Further, in S102, the mixture of the waste glass powder, the water glass, the quicklime and the water is stirred for 40-60S at the rotating speed of 100-150 r/min.
The invention also aims to provide a regenerative baking-free brick prepared by the preparation method.
The invention has the beneficial effects that:
1) the construction waste and the waste glass are respectively recycled to obtain the construction waste recycled material and the waste glass recycled material, and the two recycled materials are used as main raw materials to produce the regenerative baking-free brick, so that the resource utilization of the construction waste and the waste glass is realized, the types of raw materials for preparing the baking-free brick and the use amount of other raw materials are favorably reduced, the transportation cost is reduced, the economic benefit is improved, the method can be widely applied to the treatment of the construction waste and the waste glass, and the energy conservation and the environmental protection are favorably realized.
2) The water glass and the quicklime are used as processing aids to process the waste glass powder, so that the reaction activity of the waste glass powder is favorably improved, and the structural strength of the baking-free brick prepared from the waste glass reclaimed materials is favorably improved.
3) The dodecyl guanidine salt is adopted to clean the broken glass blocks, which is beneficial to improving the cleaning effect and the reaction activity of the treated waste glass powder, and further improving the compactness of the prepared baking-free brick, so that the baking-free brick meets the requirements of relevant standards.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are also within the scope of the present invention.
Example one
The embodiment provides a preparation method of an environment-friendly regenerative baking-free brick, which comprises the following steps:
s1, raw material pretreatment: and (3) recycling the construction waste and the waste glass to obtain a construction waste reclaimed material and a waste glass reclaimed material. The building rubbish of this embodiment is that a certain resident's residential building is removed and is retrieved the result, and the glass portion that gives up is sorting among the building rubbish and obtains, and the rest is the leftover bits of material of purchasing by the glass manufacturing plant.
The recycling treatment process of the construction waste comprises crushing and screening, and screening out materials with the particle size of less than 5mm, namely the construction waste reclaimed materials. The method comprises the steps of screening materials with the particle size of 2.5-5 mm, classifying the materials with the particle size of 0.075-2.5 mm as a regeneration coarse material, classifying the materials with the particle size of less than 0.075mm as a regeneration fine material, classifying the regeneration coarse material, the regeneration fine material and the regeneration powder material according to the proportion of 1:3.6:2.2, and obtaining the construction waste regeneration material.
The recovery treatment process of the waste glass comprises the following steps:
s101, crushing waste glass into glass cullet blocks with the particle size not larger than 20mm, cleaning the glass cullet blocks by adopting a dodecyl guanidine hydrochloride aqueous solution, stirring and washing the glass cullet blocks in the aqueous solution, stirring for 15min, filtering out the aqueous solution, and airing and grinding the glass cullet blocks to obtain waste glass powder, wherein the concentration of the dodecyl guanidine hydrochloride aqueous solution is 0.03g/L, and the mass ratio of the glass cullet blocks to the aqueous solution is 1: 2.3.
S102, adding water glass and quicklime into the waste glass powder in the following proportion: adding 0.1kg of water glass and 2kg of quicklime into every 35kg of waste glass powder, uniformly mixing and stirring, then adding water, adding 20kg of water into every 35kg of waste glass powder, stirring for 40s at the rotating speed of 150r/min, drying and solidifying the mixture, and crushing again to obtain the waste glass reclaimed material.
S2, mixing the raw materials: weighing 150kg of construction waste regeneration material, 16kg of waste glass regeneration material, 0.1kg of magnesium chloride and 0.6kg of brown corundum powder, uniformly stirring, and mixing with water to obtain raw material slurry.
S3, press forming: and pressing and forming the raw material slurry, and curing for 10 days at the temperature of 20 +/-2 ℃ and the humidity of more than 85% to obtain the baking-free brick.
Example two
The difference between the present embodiment and the first embodiment is mainly as follows: in S1 of this example, the construction waste recycled material is recycled coarse material, recycled fine material and recycled powder material, and they are mixed in a ratio of 1:3: 2.5. In S101, the cullet is washed by adopting a dodecyl guanidine acetate aqueous solution, the concentration of the aqueous solution is 0.08g/L, and the mass ratio of the cullet to the aqueous solution is 1: 2.5. In S102, the adding proportion of the waste glass powder to the water glass, the quicklime and the water is as follows: 0.12kg of water glass, 3kg of quicklime and 25kg of water are added to 38kg of waste glass powder, and the mixture is stirred at a rotation speed of 120r/min for 55 s. In S2, 166kg of construction waste reclaimed materials, 20kg of waste glass reclaimed materials, 0.2kg of potassium chloride and 0.8kg of brown corundum powder are weighed, stirred uniformly and mixed with water to obtain raw material slurry.
EXAMPLE III
The difference between the present embodiment and the first embodiment is mainly as follows: in S1 of this example, the construction waste recycled material is recycled coarse material, recycled fine material and recycled powder material, and they are mixed in a ratio of 1:2.5: 3. In S101, a dodecyl guanidine salt sulfate aqueous solution is adopted for cleaning the broken glass blocks, the concentration of the aqueous solution is 0.05g/L, and the mass ratio of the broken glass blocks to the aqueous solution is 1: 2.8. In S102, the adding proportion of the waste glass powder to the water glass, the quicklime and the water is as follows: 0.15kg of water glass, 5kg of quicklime and 28kg of water were added to 42kg of waste glass frit, and the mixture was stirred at 100r/min for 60 seconds. In S2, 135kg of construction waste recycled material, 19.5kg of waste glass recycled material, 0.27kg of magnesium phosphate, and 0.75kg of brown corundum powder are weighed, uniformly stirred, and mixed with water to obtain raw material slurry.
Example four
The difference between the present embodiment and the first embodiment is mainly as follows: in S1 of this example, the construction waste recycled material is recycled coarse material, recycled fine material and recycled powder material, and they are mixed in the ratio of 1:3.2: 2.8. In S101, the cullet is cleaned by adopting dodecyl guanidine acetate aqueous solution, the concentration of the aqueous solution is 0.06g/L, and the mass ratio of the cullet to the aqueous solution is 1: 2.6. In S102, the adding proportion of the waste glass powder to the water glass, the quicklime and the water is as follows: 0.13kg of water glass, 4kg of quicklime and 24kg of water are added to 40kg of waste glass powder, and the mixture is stirred at a rotation speed of 130r/min for 50 s. In S2, 170kg of construction waste reclaimed materials, 22kg of waste glass reclaimed materials, 0.24kg of chromium phosphate and 0.8kg of brown corundum powder are weighed, stirred uniformly and mixed with water to obtain raw material slurry.
Comparative example 1
The comparative example differs from the first example mainly in that: in the recycling treatment process of the waste glass reclaimed material of the comparative example, the crushed glass blocks are directly washed by clear water, and then are dried and ground after being cleaned, so that the obtained waste glass powder is used as the waste glass reclaimed material.
Product detection
The regenerated baking-free bricks prepared in the first to fourth examples and the first comparative example are tested according to the content of the national standard 'common concrete small-sized block' (GB/T8239-.
Table 1 inspection results of baking-free bricks of examples one to four and comparative example one
| Group of | Appearance quality (missing edge and falling corner) | Compressive strength/MPa | Water absorption/%) | Linear drying shrinkage value/(mm/m) |
| Technical index | Less than or equal to 1 and less than or equal to 20mm | ≥10 | ≤14 | ≤0.65 |
| Example one | Qualified | 12.6 | 13 | 0.53 |
| Example two | Qualified | 13.5 | 11 | 0.48 |
| EXAMPLE III | Qualified | 12.3 | 13 | 0.55 |
| Example four | Qualified | 14.1 | 12 | 0.42 |
| Comparative example 1 | Fail to be qualified | 4.4 | 23 | 0.87 |
As can be seen from the above table, the baking-free bricks prepared according to the preparation methods of the present invention in the examples meet the technical indexes of the relevant national standards, and the baking-free bricks prepared according to the method of the comparative example have far from meeting the requirements of the technical indexes in appearance, compressive strength, water absorption and drying shrinkage. The invention has important influence on the quality of the waste glass reclaimed material as the raw material of the baking-free brick, the waste glass reclaimed material prepared by the method has stronger reaction activity, and can be pressed into the qualified baking-free brick after being mixed with the construction waste reclaimed material, the brown corundum powder, the adhesive and the water. The invention has the advantages of less raw material types, capability of fully recycling construction waste and waste glass, low raw material transportation cost and good economic benefit.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A preparation method of an environment-friendly regenerative baking-free brick is characterized by comprising the following steps: the method comprises the following steps:
s1, raw material pretreatment: recycling the construction waste and the waste glass to obtain construction waste reclaimed materials and waste glass reclaimed materials;
the recycling treatment process of the construction waste comprises crushing and screening, and screening out materials with the particle size of less than 5mm, namely the construction waste recycled material;
the recycling treatment process of the waste glass comprises the following steps:
s101, crushing waste glass into cullet blocks, cleaning the cullet blocks, and grinding the cleaned cullet blocks into powder to obtain waste glass powder;
s102, adding water glass and quicklime into the waste glass powder, uniformly mixing and stirring, adding water, stirring, and crushing the mixture again after the mixture is solidified to obtain a waste glass reclaimed material;
s2, mixing the raw materials: weighing 75-90 parts by weight of construction waste reclaimed materials, 8-13 parts by weight of waste glass reclaimed materials, 0.05-0.18 part by weight of adhesive and 0.3-0.5 part by weight of brown corundum powder, uniformly stirring, and mixing with water to obtain raw material slurry; the adhesive is at least one of metal chloride or phosphate;
s3, press forming: and pressing and forming the raw material slurry, and curing to obtain the baking-free brick.
2. The preparation method of the environment-friendly regenerative baking-free brick as claimed in claim 1, wherein: the construction waste recycled material comprises recycled coarse material, recycled fine material and recycled powder, the particle size of the recycled coarse material is 2.5-5 mm, the particle size of the recycled fine material is 0.075-2.5 mm, and the particle size of the recycled powder is smaller than 0.075 mm.
3. The preparation method of the environment-friendly regenerative baking-free brick as claimed in claim 2, wherein: in the construction waste recycled material, the mass ratio of the recycled coarse material to the recycled fine material to the recycled powder is 1: 2.5-3.6: 2.2 to 3.
4. The preparation method of the environment-friendly regenerative baking-free brick as claimed in claim 1, wherein: in the step S101, dodecyl guanidine salt is added into a cleaning solution for cleaning the broken glass blocks, wherein the dodecyl guanidine salt is at least one of dodecyl guanidine hydrochloride, dodecyl guanidine acetate and dodecyl guanidine sulfate.
5. The method for preparing the environment-friendly regenerative baking-free brick according to claim 4, wherein the method comprises the following steps: the addition amount of the dodecyl guanidine salt in the cleaning solution is 0.03-0.08 g/L.
6. The method for preparing the environment-friendly regenerative baking-free brick according to claim 4, wherein the method comprises the following steps: the mass ratio of the glass cullet blocks to the cleaning liquid is 1: 2.3-2.8.
7. The preparation method of the environment-friendly regenerative baking-free brick as claimed in claim 1, wherein: in the S102, the mixture is obtained by mixing 35-42 parts by weight of waste glass powder, 0.1-0.15 part by weight of water glass, 2-5 parts by weight of quicklime and 20-28 parts by weight of water.
8. The preparation method of the environment-friendly regenerative baking-free brick as claimed in claim 1, wherein: and in the step S102, stirring the mixture of the waste glass powder, the water glass, the quicklime and the water at the rotating speed of 100-150 r/min for 40-60S.
9. An environment-friendly regenerative baking-free brick is characterized in that: prepared by the preparation method of any one of claims 1 to 8.
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Application publication date: 20200818 |