CN110950642A - Industrial waste residue sintered brick and preparation method thereof - Google Patents
Industrial waste residue sintered brick and preparation method thereof Download PDFInfo
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- CN110950642A CN110950642A CN201811122410.8A CN201811122410A CN110950642A CN 110950642 A CN110950642 A CN 110950642A CN 201811122410 A CN201811122410 A CN 201811122410A CN 110950642 A CN110950642 A CN 110950642A
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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
- 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
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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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
- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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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
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
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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
- 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
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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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
- 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
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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- C—CHEMISTRY; METALLURGY
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- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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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
- 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
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Abstract
The invention belongs to the technical field of processing of sintered bricks, and particularly relates to a common sintered brick prepared by taking industrial waste residues as raw materials, and further discloses a preparation method of the common sintered brick. According to the industrial waste residue sintered brick, industrial solid waste, namely steel slag and coal ash are used as main raw materials, and through interaction with additives such as a binder and fuel, particularly, the fuel is used as the raw material and is added into the sintered brick, so that the sintered brick is sintered in a fuel-assisted internal combustion mode during a sintering step, the heat productivity is high, the sulfur content is extremely low, on one hand, the inside and the outside of a green brick are uniformly sintered, and the surface of the obtained sintered brick is smoother and more attractive under the condition that the mechanical property meets the use requirement; meanwhile, the sintered brick can finish the sintering treatment at a lower temperature of 850-1000 ℃ and in a shorter time, thereby effectively saving energy consumption.
Description
Technical Field
The invention belongs to the technical field of processing of sintered bricks, and particularly relates to a common sintered brick prepared by taking industrial waste residues as raw materials, and further discloses a preparation method of the common sintered brick.
Background
The steel slag is industrial solid waste slag discharged in the steel making process, and the discharge amount is about 15-20% of the yield of crude steel. The steel slag mainly comprises solid solution formed by tricalcium silicate, dicalcium silicate, calcium forsterite, calcium magnesium multiflower hectorite, calcium aluminoferrite and oxides of silicon, magnesium, iron, manganese and phosphorus, and also comprises a small amount of free calcium oxide, metallic iron, fluorapatite and the like, and the steel slag also comprises a little of the components in some areas because ores contain titanium and vanadium. Due to the requirements of environmental protection and recycling of industrial wastes, the technology for recycling steel slag has been developed gradually to apply the steel slag to the fields of cement, road engineering, agricultural production, metallurgical furnace burden, sewage treatment and the like, and certain progress is achieved, but the large-scale and resource utilization requirements of the steel slag still cannot be met.
The fly ash is fine ash collected from flue gas generated after coal combustion, is mainly main solid waste discharged from a coal-fired power plant, and comprises the following elements: o (47.83%), Si (11.48% -31.14%), Al (6.40% -22.91%), Fe (1.90% -18.51%) and other trace elements, and can be used as the admixture of concrete. As the discharge amount of the fly ash of coal-fired power plants increases year by year, a large amount of fly ash can generate dust without being treated, and the atmosphere is polluted.
Chinese patent CN102491712A discloses a sintered brick using steel slag and fly ash as main raw materials, which realizes the reutilization by using the steel slag and the fly ash as the raw materials, and the sintered brick is prepared by adding a chemical excitant. However, the preparation process of the sintered brick is complicated because the preparation process of the sintered brick requires pretreatment processes such as water milling digestion and the like on the steel slag.
For another example, chinese patent CN106431350A discloses a sintered brick made of metallurgical slag, which uses metallurgical slag as raw material to prepare the sintered brick, but uses clay or shale in a large proportion (40-95 parts by mass) to bond in the production process, resulting in the utilization ratio of the metallurgical slag being less than 60 parts; on one hand, the utilization rate of industrial waste residue can not meet the requirement, and meanwhile, the sintered brick needs to be sintered at 1100 ℃, and has the problem of slightly high energy consumption to a certain extent.
For another example, chinese patent CN104193300A discloses a steel slag sintered water permeable brick, which uses a certain amount of steel slag waste in the base material and the face material, but the sintering temperature of the sintered brick is up to 1200-.
Disclosure of Invention
Therefore, the invention aims to provide a steel slag baked brick to solve the problems of low utilization rate of steel slag and waste slag and high energy consumption of utilization process in the prior art.
In order to solve the technical problems, the industrial waste residue baked brick comprises the following preparation components in percentage by mass based on the total amount of preparation raw materials of the baked brick:
the particle size of the steel slag is less than 100 mu m.
The fly ash is second-grade fly ash.
The fuel is a solid fuel.
The fuel comprises at least one of common pulverized coal, clean pulverized coal, charcoal powder and coke powder.
The binder comprises at least one of sodium bentonite, calcium bentonite, attapulgite, perlite raw ore, raw kaolin and black mud.
The invention also discloses a method for preparing the industrial waste residue baked brick, which comprises the following steps:
(1) crushing and screening steel slag, and collecting the steel slag with the selected particle size for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, and adding water to prepare a mixture;
(3) pressing the mixed pug into green bricks, and drying;
(4) sintering the dried green brick at 850-1000 ℃ for 5-15h to obtain the brick.
In the step (2), the adding amount of the water accounts for 8-15 wt% of the total amount of the raw materials.
In the step (3), the extrusion pressure of the pressing step is controlled to be 8-25 MPa.
In the step (3), the drying step is drying for 2-6h at the temperature of 60-120 ℃.
According to the industrial waste residue sintered brick, industrial solid waste, namely steel slag and coal ash are used as main raw materials, and through interaction with additives such as a binder and fuel, particularly, the fuel is used as the raw material and is added into the sintered brick, so that the sintered brick is sintered in a fuel-assisted internal combustion mode during a sintering step, the heat productivity is high, the sulfur content is extremely low, on one hand, the inside and the outside of a green brick are uniformly sintered, and the surface of the obtained sintered brick is smoother and more attractive under the condition that the mechanical property meets the use requirement; meanwhile, the sintered brick can finish the sintering treatment at a lower temperature of 850-1000 ℃ and in a shorter time, thereby effectively saving energy consumption.
In the industrial waste residue sintered brick, the adopted raw materials are common raw materials, no toxic or harmful substances are generated in the manufacturing process of the product, and the industrial waste residue sintered brick is suitable for the existing mature brick making system. In the industrial waste residue sintered brick, the steel slag contains more calcium oxide, the fly ash contains a large amount of hollow glass bodies, the glass bodies mainly comprise high-activity silicate and aluminate, the steel slag powder and the fly ash powder are combined together through the binder in the processing and forming process, and in the high-temperature sintering process, the calcium oxide promotes the binder to be melted to form a liquid phase, the structure of the glass bodies is damaged, the high-activity silicate and chlorate in the interior are released, the calcium oxide is combined to form a anorthite crystal phase, and the calcium oxide and the chlorate form crystal phases such as mullite and the like, so that the mechanical property of a finished sintered brick is higher. In addition, in the steel slag sintered brick, the use amount of industrial solid waste steel slag reaches more than 90 wt%, and the mechanical property meets the technical index requirement, so that the problem of slightly high cost caused by the utilization of a chemical reinforcing agent in the prior art is solved, and an effective and feasible way is provided for the resource utilization of the steel slag and the fly ash.
The preparation method of the industrial waste residue sintered brick adopts the process of raw material pretreatment, mixing, press forming, drying and sintering, has simple and easy process steps, can complete the sintering treatment at lower temperature and in shorter time by means of the interaction of the raw materials for preparing the sintered brick, and has smoother and more beautiful surface under the condition that the mechanical property of the sintered brick meets the use requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow chart of the invention for preparing steel slag sintered bricks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious 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 making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The raw materials for preparing the industrial residue baked brick comprise: 70kg of steel slag, 10kg of fly ash, 10kg of clean coal powder (the particle size is less than 300 meshes), 3kg of calcium bentonite and 7kg of black mud.
As shown in the process flow diagram of fig. 1, the method for preparing the industrial residue baked brick of the embodiment includes the following steps:
(1) crushing the steel slag by a crusher, screening, and selecting particles with the particle size of below 100 mu m for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, respectively mixing for 3min at the rotating speed of 300r/min by a mixer, and then adding water accounting for 8% of the total amount of the raw materials for uniformly mixing to obtain a mixture for later use;
(3) placing the mixture obtained in the step (2) in a vibration brick press, pressing the mixture into a green brick under the pressure of 8MPa, and drying the green brick at 120 ℃ for 2 hours by using a drying kiln;
(4) and (4) sintering the dried green bricks prepared in the step (3) at 850 ℃ by using a tunnel kiln, wherein the sintering period is 15 h.
Example 2
The raw materials for preparing the industrial residue baked brick comprise: 60kg of steel slag, 25kg of fly ash, 5kg of coke powder, 5kg of calcium bentonite and 5kg of attapulgite.
As shown in the process flow diagram of fig. 1, the method for preparing the industrial residue baked brick of the embodiment includes the following steps:
(1) crushing the steel slag by a crusher, screening, and selecting particles with the particle size of below 100 mu m for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, respectively mixing for 10min at the rotating speed of 800r/min by a mixer, and then adding water accounting for 10% of the total amount of the raw materials for uniformly mixing to obtain a mixture for later use;
(3) placing the mixture obtained in the step (2) in a vibration brick press, pressing the mixture into a green brick under the pressure of 25MPa, and drying the green brick at 90 ℃ for 5 hours by using a drying kiln;
(4) and (4) sintering the dried green bricks prepared in the step (3) at 1000 ℃ by using a tunnel kiln, wherein the sintering period is 5 h.
Example 3
The raw materials for preparing the industrial residue baked brick comprise: 50kg of steel slag, 20kg of fly ash, 15kg of charcoal powder, 10kg of sodium bentonite and 5kg of perlite raw ore.
As shown in the process flow diagram of fig. 1, the method for preparing the industrial residue baked brick of the embodiment includes the following steps:
(1) crushing the steel slag by a crusher, screening, and selecting particles with the particle size of below 100 mu m for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, respectively mixing for 3min at the rotating speed of 800r/min by a mixer, and then adding water accounting for 15% of the total amount of the raw materials for uniformly mixing to obtain a mixture for later use;
(3) placing the mixture obtained in the step (2) in a vibration brick press, pressing the mixture into a green brick under the pressure of 15MPa, and drying the green brick at 60 ℃ for 6 hours by using a drying kiln;
(4) and (4) sintering the dried green bricks prepared in the step (3) at 950 ℃ by using a tunnel kiln, wherein the sintering period is 11 h.
Example 4
The raw materials for preparing the industrial residue baked brick comprise: 70kg of steel slag, 15kg of fly ash, 8kg of common coal powder, 3kg of attapulgite and 4kg of raw kaolin.
As shown in the process flow diagram of fig. 1, the method for preparing the industrial residue baked brick of the embodiment includes the following steps:
(1) crushing the steel slag by a crusher, screening, and selecting particles with the particle size of below 100 mu m for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, respectively mixing for 7min at the rotating speed of 800r/min by a mixer, and then adding water accounting for 13% of the total amount of the raw materials for uniformly mixing to obtain a mixture for later use;
(3) placing the mixture obtained in the step (2) in a vibration brick press, pressing the mixture into a green brick under the pressure of 15MPa, and drying the green brick at 100 ℃ for 3 hours by using a drying kiln;
(4) and (4) sintering the dried green bricks prepared in the step (3) at 900 ℃ by using a tunnel kiln, wherein the sintering period is 8 h.
Example 5
The raw materials for preparing the industrial residue baked brick comprise: 60kg of steel slag, 30kg of fly ash, 8kg of clean coal powder and 2kg of raw kaolin.
As shown in the process flow diagram of fig. 1, the method for preparing the industrial residue baked brick of the embodiment includes the following steps:
(1) crushing the steel slag by a crusher, screening, and selecting particles with the particle size of below 100 mu m for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, respectively mixing for 6min at a rotating speed of 500r/min by a mixer, and then adding water accounting for 12% of the total amount of the raw materials for uniformly mixing to obtain a mixture for later use;
(3) placing the mixture obtained in the step (2) in a vibration brick press, pressing the mixture into a green brick under the pressure of 15MPa, and drying the green brick at 90 ℃ for 4 hours by using a drying kiln;
(4) and (4) sintering the dried green bricks prepared in the step (3) at 900 ℃ by using a tunnel kiln, wherein the sintering period is 8 h.
Comparative example 1
The raw materials and preparation method of the industrial residue baked brick of this comparative example are the same as those of example 2 except that the fuel is not added.
Examples of the experiments
The properties of the industrial residue sintered bricks obtained in the above examples 1 to 4 and comparative example 1, including the brick body density, compressive strength and water absorption, were tested according to the conventional methods of the prior art, and the results were recorded in the following table 1.
TABLE 1 examples sample Properties
| Numbering | Density/kg m3 | Compressive strength/MPa | Water absorption/%) |
| Example 1 | 1810 | 22.1 | 8.8 |
| Example 2 | 2050 | 30.1 | 3.5 |
| Example 3 | 1930 | 26.2 | 5.6 |
| Example 4 | 1880 | 25.4 | 7.1 |
| Comparative example 1 | 2180 | 28.0 | 4.0 |
As can be seen from Table 1, the sintered bricks obtained by the present invention have a volume-weight density of 1810-2050kg/m3The compressive strength is more than 22.1MPa, the water absorption is less than 8.8 percent, the performance of the material not only meets the use requirements of MU20 to MU25 grades in the national standard common sintered brick, but also provides an effective and feasible method for the resource utilization of the synergistic treatment of the steel slag and the fly ash.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. The industrial waste residue baked brick is characterized by comprising the following preparation components in percentage by mass based on the total amount of preparation raw materials of the baked brick:
2. the industrial slag baked brick as claimed in claim 1, wherein the steel slag has a particle size of less than 100 μm.
3. The industrial residue baked brick according to claim 1 or 2, wherein the fly ash is secondary fly ash.
4. The industrial residue sintered brick of any one of claims 1 to 3, wherein the fuel is a solid fuel.
5. The industrial residue baked brick as claimed in claim 4, wherein the fuel comprises at least one of pulverized coal, clean coal powder, charcoal powder and coke powder.
6. The industrial residue baked brick of any one of claims 1 to 5, wherein the binder comprises at least one of sodium bentonite, calcium bentonite, attapulgite, perlite raw ore, raw kaolin, and black mud.
7. A method for preparing the industrial residue baked brick as claimed in any one of claims 1 to 6, comprising the steps of:
(1) crushing and screening steel slag, and collecting the steel slag with the selected particle size for later use;
(2) uniformly mixing selected amounts of the steel slag, the fly ash, the fuel and the binder, and adding water to prepare a mixture;
(3) pressing the mixed pug into green bricks, and drying;
(4) sintering the dried green brick at 850-1000 ℃ for 5-15h to obtain the brick.
8. The method for preparing the industrial residue baked brick as claimed in claim 7, wherein the water is added in an amount of 8 to 15 wt% based on the total amount of the raw materials in the step (2).
9. The method for producing an industrial residue baked brick as claimed in claim 7 or 8, wherein in the step (3), the extrusion pressure of the pressing step is controlled to be 8 to 25 MPa.
10. The method for preparing the industrial residue baked brick as claimed in any one of claims 7 to 9, wherein in the step (3), the drying step is performed at a temperature of 60 to 120 ℃ for 2 to 6 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819071A (en) * | 2022-12-22 | 2023-03-21 | 湖南银和瓷业有限公司 | Recycling process and application of industrial waste ceramic mud |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976709A (en) * | 2012-12-05 | 2013-03-20 | 晓健科技（大连）有限公司 | Preparation method of energy-saving slag brick for building |
| CN103288430A (en) * | 2013-05-16 | 2013-09-11 | 陕西科技大学 | Method for preparing special fracturing propping agent for shale gas by utilizing low-carbon coal gangue |
| CN106431350A (en) * | 2016-09-20 | 2017-02-22 | 北京科技大学 | Metallurgical slag sintered bricks and preparation method thereof |
-
2018
- 2018-09-26 CN CN201811122410.8A patent/CN110950642A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976709A (en) * | 2012-12-05 | 2013-03-20 | 晓健科技（大连）有限公司 | Preparation method of energy-saving slag brick for building |
| CN103288430A (en) * | 2013-05-16 | 2013-09-11 | 陕西科技大学 | Method for preparing special fracturing propping agent for shale gas by utilizing low-carbon coal gangue |
| CN106431350A (en) * | 2016-09-20 | 2017-02-22 | 北京科技大学 | Metallurgical slag sintered bricks and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115819071A (en) * | 2022-12-22 | 2023-03-21 | 湖南银和瓷业有限公司 | Recycling process and application of industrial waste ceramic mud |
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