CN112694270A - Steel slag on-line tempering system and production method thereof - Google Patents
Steel slag on-line tempering system and production method thereof Download PDFInfo
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- CN112694270A CN112694270A CN202011600165.4A CN202011600165A CN112694270A CN 112694270 A CN112694270 A CN 112694270A CN 202011600165 A CN202011600165 A CN 202011600165A CN 112694270 A CN112694270 A CN 112694270A
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- steel slag
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- 239000002893 slag Substances 0.000 title claims abstract description 85
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000005496 tempering Methods 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 21
- 238000003723 Smelting Methods 0.000 claims abstract description 18
- 235000015895 biscuits Nutrition 0.000 claims abstract description 17
- 238000004321 preservation Methods 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 239000004566 building material Substances 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 7
- 238000011068 loading method Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 13
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 238000000465 moulding Methods 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 239000002241 glass-ceramic Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000010345 tape casting Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
Abstract
The invention discloses an on-line steel slag tempering system and a production method thereof, wherein the system comprises the following steps: the heat preservation smelting furnace is used for loading high-temperature steel slag inside; the bin is arranged at an inlet above the steel slag ladle and is used for injecting a preparation raw material into the heat-preservation smelting furnace so as to be mixed with the steel slag to form a molten blank; the temperature detector and the component detector are arranged in the heat-insulating melting furnace; a forming device arranged at the outlet of the heat-preserving melting furnace and used for enabling the molten blank to flow through the forming device and forming the molten blank into a required thickness; the cutting equipment is arranged at the outlet of the forming equipment and is used for cutting the formed blank into a biscuit with a required size; and the shaping equipment is arranged at an outlet of the cutting equipment and used for cooling the biscuit or annealing the biscuit to form a building material product. Solves the problem that the energy of the steel slag is not effectively utilized in the process of cooling from high temperature to room temperature in the prior art.
Description
Technical Field
The invention belongs to the technical field of steel slag solid waste treatment, and particularly relates to an on-line steel slag tempering system and a production method thereof.
Background
With the rapid development of the steel industry, the production amount of steel slag is gradually increased year by year, at present, about 10 hundred million tons of steel slag are accumulated and stockpiled nationwide, and the problems of treatment and resource utilization of the steel slag of steel enterprises are gradually emphasized by people. The steel slag is waste slag generated in the production process of metallurgical industry, and is divided into converter slag, open furnace slag and electric furnace slag according to different furnace types. The discharge amount is about 15% -20% of the yield of the crude steel. The steel slag mainly comprises calcium, iron, silicon, magnesium and a small amount of oxides of aluminum, manganese, phosphorus and the like, but the components of the steel slag are greatly different according to different types of steel-making furnaces, steel types and smelting stages.
At present, the steel slag is utilized after being cooled from high temperature (about 1450 ℃) to room temperature, the steel slag has the highest utilization rate and value in the aspect of steel slag utilization, and is used for producing building materials, and main products comprise microcrystalline glass, ceramic tiles, road bricks, ceramsite and other products produced in a sintering mode. The current production mode of these products is to pulverize the raw materials and then produce the products by means of blending, grinding, milling, molding, firing, etc. A large amount of energy is consumed in the process of crushing the steel slag and sintering the product. The energy of the steel slag is not effectively utilized in the process of cooling from high temperature (1450-1500 ℃) to room temperature (25 ℃) and thermal pollution is generated.
Disclosure of Invention
The invention aims to provide an on-line steel slag tempering system and a production method thereof, which aim to solve the problem that the energy of steel slag is not effectively utilized in the process of cooling the steel slag from high temperature to room temperature in the prior art.
The invention adopts the following technical scheme: steel slag online quenching and tempering system includes:
a heat preservation smelting furnace, wherein the interior of the heat preservation smelting furnace is used for loading high-temperature steel slag, and the temperature of the steel slag is 1450-1550 ℃; a stirring paddle is also arranged in the stirring device;
the bin is arranged at an inlet above the steel slag ladle and is used for injecting a preparation raw material into the heat-preservation smelting furnace so as to be mixed with the steel slag to form a molten blank;
the temperature detector is arranged in the heat-preservation melting furnace and used for detecting the temperature of the blank in the heat-preservation melting furnace;
the component detector is arranged in the heat-preservation melting furnace and used for detecting the components of the blank in the heat-preservation melting furnace;
a forming device arranged at the outlet of the insulated furnace for flowing the molten billet therethrough and forming said molten billet into a desired thickness;
the cutting equipment is arranged at the outlet of the forming equipment and is used for cutting the formed blank into a biscuit with a required size;
and the shaping equipment is arranged at an outlet of the cutting equipment and is used for cooling the biscuit or annealing the biscuit to form a building material product.
Further, the molding apparatus is a roll molding machine or a casting molding machine.
Further, the shaping equipment is a low-temperature annealing furnace or a crystallization furnace.
The invention also provides a production method of the steel slag on-line tempering system, which is implemented according to the following steps:
s1, adding a hardening and tempering raw material into the steel slag ladle carrying the high-temperature steel slag, and stirring to form a molten blank;
s2, conveying the molten blank to a forming device to form the molten blank into a required thickness;
s3, cutting the blank processed by the S2 into a biscuit with a required size by a cutting device;
and S4, shaping the biscuit processed by the S3 into a building material product by shaping equipment.
The invention has the advantages that the production process adopted by the invention is mature, the automation degree is high, the production process is easy to control, and the product qualification rate is high and reaches more than 98%; the temperature (1450 ℃ -1550 ℃) of the steel slag is used as energy, and the energy consumption is reduced by more than 90% compared with the energy consumption in the traditional mode from room temperature to high temperature; the variety of the produced products is various, and the products are easy to adjust in the production process; the production process eliminates the raw material crushing process and the granulation process, realizes the short production flow and reduces the pollution of dust, noise and the like.
Drawings
FIG. 1 is a system structure diagram of the steel slag on-line tempering system of the present invention using roll forming;
FIG. 2 is a structural diagram of a system for casting steel slag on-line tempering system of the present invention.
The steel slag casting device comprises a storage bin 1, a stirring blade 2, a temperature detector 3, a component detector 4, a heat-preservation melting furnace 5, steel slag 6, a rolling forming machine 7, a cutting device 8, a shaping device 9 and a tape casting forming machine 10.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides an on-line steel slag tempering system which comprises a storage bin 1, a heat preservation smelting furnace 5, a forming device, a cutting device 8 and a shaping device 9 which are sequentially arranged.
Wherein, the interior of the heat preservation smelting furnace 5 is used for loading high-temperature steel slag 6, and the temperature of the steel slag 6 is 1450-1550 ℃; the stirring paddle 2 is also arranged in the stirring device and is used for stirring materials. The bin 1 is arranged at an inlet above the steel slag ladle and is used for injecting a preparation raw material into the heat-preservation smelting furnace 5 so as to be mixed with the steel slag to form a molten blank. The temperature detector 3 is arranged in the heat-preserving smelting furnace 5 and is used for detecting the temperature of the blank in the heat-preserving smelting furnace 5; the composition detector 4 is arranged in the heat-preserving melting furnace 5 and is used for detecting the composition of the blank in the heat-preserving melting furnace 5.
A forming device is provided at the outlet of the holding furnace 5 for causing the molten billet to flow thereon and to form said molten billet into a desired thickness. As shown in fig. 1, the molding apparatus is a roll molding machine 7, and as shown in fig. 2, the molding apparatus is a casting molding machine 10.
A cutting device 8 is arranged at the outlet of the forming device for cutting the formed blank into a biscuit of the desired size. The shaping equipment 9 is arranged at an outlet of the cutting equipment 8 and used for cooling the biscuit or annealing the biscuit to form a building material product. The shaping equipment 9 is a low-temperature annealing furnace or a crystallization furnace.
The invention also provides a working method of the steel slag on-line tempering system, which comprises the following steps: the method comprises the following steps:
s1, analyzing the components of the steel slag, adding the hardening and tempering raw materials from a storage bin according to the chemical component analysis of the steel slag, and blending the materials into the components of the required product; adding a quenching and tempering raw material into a steel slag ladle carrying the high-temperature steel slag 6, mixing the steel slag and the quenching and tempering raw material to form a molten blank of a required product, and stirring to form the molten blank.
S2, conveying the molten billet to a forming device to form the molten billet into a desired thickness.
And S3, cutting the blank processed by the S2 into a biscuit with a required size by the cutting equipment 8.
And S4, shaping the biscuit processed by the S3 into a building material product by shaping equipment 9.
According to the invention, through analyzing the chemical composition of the steel slag, according to the chemical composition requirements of different building materials, the characteristics of the high temperature (1450 ℃ -1550 ℃) of the steel slag are utilized, the clay mineral raw material and the fluxed mineral raw material are added to the steel slag at the high temperature according to the proportion to carry out quenching and tempering, and the heat contained in the steel slag at the high temperature is utilized to carry out high-temperature crystal phase reconstruction on the steel slag, so that the building material product meeting the standard requirements is produced, and the purpose of maximum application of the steel slag is achieved. The products can be ceramic tiles, microcrystalline glass, foamed ceramics and other products, and are used for road bricks, chopping boards, table tops and panels for decoration.
Example 1:
step 1: the stock bin 1 is loaded with the mixed quenching and tempering raw materials;
step 2: loading high-temperature 1450-1550 ℃ steel slag, stirring blades 2, monitoring the temperature 3 and detecting the components 4 to form a steel slag ladle;
and step 3: placing the quenching and tempering raw materials and the steel slag package into a heat-preserving smelting furnace 5 to obtain molten blank steel slag 6;
and 4, step 4: steel slag 6 is spread on a kiln car according to a certain thickness by a tape casting method, rolled and molded, cut after being shaped,
gradually cooling to room temperature in a tunnel kiln, and polishing after cooling to produce the ceramic tile.
Example 2:
step 1: the stock bin 1 is loaded with the mixed quenching and tempering raw materials;
step 2: loading high-temperature 1450-1550 ℃ steel slag, stirring blades 2, monitoring the temperature 3 and detecting the components 4 to form a steel slag ladle;
and step 3: placing the quenching and tempering raw materials and the steel slag package into a heat-preserving smelting furnace 5 to obtain molten blank steel slag 6;
and 4, step 4: after 2-3 levels of rolling, the steel slag 6 is cut into solid blanks, and the solid blanks are cooled in a tunnel kiln or a roller kiln to produce ceramic sheets with the thickness of 3-5 mm or ceramic large plates with the thickness of 20-40 mm.
Example 3:
step 1: the stock bin 1 is loaded with the mixed quenching and tempering raw materials;
step 2: loading high-temperature 1450-1550 ℃ steel slag, stirring blades 2, monitoring the temperature 3 and detecting the components 4 to form a steel slag ladle;
and step 3: placing the quenching and tempering raw materials and the steel slag package into a heat-preserving smelting furnace 5 to obtain molten blank steel slag 6;
and 4, step 4: the steel slag 6 is formed by adopting a tape casting method, and after cutting, the formed product is crystallized in a crystallization furnace and cooled to obtain the microcrystalline glass plate or the microcrystalline glass brick.
In the prior art, the production of the common glass ceramics is to melt the glass ceramics raw material, lay the glass ceramics raw material in a mould after water crushing, and put the glass ceramics raw material into a kiln again for firing. The steel slag on-line quenching and tempering method of the invention utilizes the temperature (1450 ℃ to 1550 ℃) of the steel slag as energy, and reduces the energy consumption by more than 90 percent compared with the traditional mode of production from room temperature to high temperature; the variety of the produced products is various, and the products are easy to adjust in the production process; the production process eliminates the raw material crushing process and the granulation process, realizes the short production flow and reduces the pollution of dust, noise and the like.
Claims (4)
1. Steel slag on-line quenching and tempering system, its characterized in that includes:
the heat preservation smelting furnace (5) is internally used for loading high-temperature steel slag (6), and the temperature of the steel slag (6) is 1450-1550 ℃; a stirring paddle (2) is also arranged in the stirring device;
the storage bin (1) is arranged at an inlet above the steel slag ladle and is used for injecting a preparation raw material into the heat-preservation smelting furnace (5) so as to be mixed with the steel slag to form a molten blank;
the temperature detector (3) is arranged in the heat-preserving smelting furnace (5) and is used for detecting the temperature of the blank in the heat-preserving smelting furnace (5);
a component detector (4) arranged in the heat-preserving furnace (5) and used for detecting the components of the blank in the heat-preserving furnace (5);
-a forming device, arranged at the outlet of said holding furnace (5), for causing said molten billet to flow thereon and to form said molten billet into a desired thickness;
the cutting device (8) is arranged at the outlet of the forming device and is used for cutting the formed blank into a biscuit with a required size;
and the shaping equipment (9) is arranged at an outlet of the cutting equipment (8) and is used for cooling or annealing the biscuit to form a building material product.
2. The steel slag on-line hardening and tempering system according to claim 1, wherein the forming device is a roll forming machine (7) or a casting machine (10).
3. The steel slag on-line quenching and tempering system according to the claim 1 or 2, characterized in that the setting equipment (9) is a low temperature annealing furnace or a crystallizing furnace.
4. A production method of a steel slag on-line tempering system is characterized by adopting the steel slag on-line tempering system as claimed in any one of claims 1 to 3 and being implemented according to the following steps:
s1, adding a hardening and tempering raw material into the steel slag bag loaded with the high-temperature steel slag (6), and stirring to form a molten blank;
s2, conveying the molten blank to a forming device to form the molten blank into a required thickness;
s3, cutting the blank processed by the S2 into biscuit with required size by a cutting device (8);
and S4, shaping the biscuit processed by the S3 into a building material product by shaping equipment (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600165.4A CN112694270A (en) | 2020-12-29 | 2020-12-29 | Steel slag on-line tempering system and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011600165.4A CN112694270A (en) | 2020-12-29 | 2020-12-29 | Steel slag on-line tempering system and production method thereof |
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| Publication Number | Publication Date |
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| CN112694270A true CN112694270A (en) | 2021-04-23 |
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| CN202011600165.4A Pending CN112694270A (en) | 2020-12-29 | 2020-12-29 | Steel slag on-line tempering system and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121586A (en) * | 2022-07-04 | 2022-09-30 | 中冶节能环保有限责任公司 | Electric furnace slag treatment method and device |
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| CN102826759A (en) * | 2012-09-25 | 2012-12-19 | 内蒙古科技大学 | Method for directly preparing ferro-magnetic microcrystal glass by thermal state steel slag |
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| CN105293908A (en) * | 2015-10-27 | 2016-02-03 | 武汉理工大学 | Method for directly preparing microcrystal glass through hot steel slag |
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| CN111517819A (en) * | 2020-04-03 | 2020-08-11 | 唐山庄信科技有限公司 | Method for preparing foamed ceramic by utilizing metallurgical high-temperature fluid steel slag |
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2020
- 2020-12-29 CN CN202011600165.4A patent/CN112694270A/en active Pending
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Application publication date: 20210423 |
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