CN106702056A - Iron tap channel swing spout prefabricated piece and manufacturing method thereof - Google Patents
Iron tap channel swing spout prefabricated piece and manufacturing method thereof Download PDFInfo
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- CN106702056A CN106702056A CN201611063981.XA CN201611063981A CN106702056A CN 106702056 A CN106702056 A CN 106702056A CN 201611063981 A CN201611063981 A CN 201611063981A CN 106702056 A CN106702056 A CN 106702056A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
-
- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention discloses an iron tap channel swing spout prefabricated piece. The iron tap channel swing spout prefabricated piece comprises different particulate finesses of dense corundum, different particulate finesses of tabular corundum, silicon carbide, tabular corundum powder, silicon carbide powder, active alumina powder, graphite powder, ferro-silicon nitride, asphalt powder, boron carbide, borosilicate glass powder, calcium aluminate cement, silicon powder, anti-explosion fiber and sodium hexametaphosphate. A production method of the iron tap channel swing spout prefabricated piece comprises the steps that the various raw materials are mixed, water is added, the mixture is stirred and then poured into a mold for pouring forming, demolding is conducted after forming, and then maintenance is conducted; the maintained product is placed in a firing furnace, the temperature is raised and then kept, the temperature is then lowered at a constant speed and then kept; the temperature is raised at the temperature rising speed, and then the temperature is kept; and natural cooling is conducted. The iron tap channel swing spout prefabricated piece and the production method of the iron tap channel swing spout prefabricated piece have the advantages that the prepared iron tap channel swing spout prefabricated piece has good anti-scouring performance, high-temperature strength and oxidation resistance and can keep high iron flux, and the iron tap channel swing spout prefabricated piece has the important functions on shortening the length of an iron tap channel, reducing the area of a cast house, improving the flushing and casting conditions, reducing the maintenance expense of the iron tap channel and reducing the energy consumption of per ton of iron.
Description
Technical field
The present invention relates to a kind of iron tap channel swing spout prefabricated component and preparation method thereof.
Background technology
Swing spout is that molten iron enters the important channel of fish torpedo ladle from iron runner, while desiliconization treatment can be carried out to molten iron again,
So, the quality to improving molten iron, the service life of stokehold iron tap channel is played a very important role.Current large blast furnace
Swing spout generally uses Al2O3- SiC-C matter castables are used as prefabricated component, prepare oscillating chute institute using raw material, match somebody with somebody
Than etc. most of key technology it is identical with iron runner castable.Swing spout during applied at elevated temperature, its slag resistance, iron-resistant water
Scouring capability is decreased obviously.Mainly the mode of damaging has swing spout：(1) impact of molten iron is deteriorated：Due to Al2O3- SiC-C materials
The elevated temperature strength of material is relatively low, and the ability for resisting molten iron high temperature impact is weaker, causes to deteriorate comparatively fast, is the main damage shape of the material
Formula；(2) thermal shock of circulation：Causing material structural strength reduces；(3) oxidation damage：The SiC and component C of the system material are very
It is oxidized easily, especially the oxidation of component C, causes material structure loose, intensity declines, is the most main of system material damage
Want reason.
For the main Wear cause of swing spout, there is research to use carbon-free material, while ensureing material structure stabilization
On the premise of, strengthen its thermal shock resistance by being introduced into the relatively low mullite of coefficient of thermal expansion and in matrix forming mullite thing mutually
Can, improve high temperature break resistant intensity.Although using the swing spout of mullite preparation with good thermal shock resistance, high temperature punching
Brush ability is poor.Also research and propose and Al is replaced using magnalium matter swing spout prefabricated component2O3The measure of-SiC-C matter prefabricated components,
But because spinel reaction can cause material to crack when using, liner body bulging, peeling, intensity decline, and cause slag easily to ooze
Thoroughly.It is such as unreasonable to method control in the preparation process of prefabricated component, prefabricated component cracking is also easily caused, have a strong impact on and use
Effect.The thermal shock resistance of swing spout is caused as aggregate using part white fused alumina in existing patent CN 201210069206.0
Poor, majority is in pendulum in the patented technology such as CN201020168902.3, CN201220098606.X, CN200920085544.7
Dynamic stem bar configuration aspects are designed and adjust, fail from material and raw material proportioning it is basic solve swing spout service life compared with
Short problem.Swing spout is used as the special equipment for smelting iron big-and-middle-sized blast furnace discharge yard, and it is normal steady using blast furnace safety is turned into
The essential condition of fixed operation.
The content of the invention
It is an object of the invention to provide a kind of iron tap channel swing spout prefabricated component and preparation method thereof, can effectively solve the problem that
The component C of existing iron tap channel swing spout prefabricated component is oxidizable, causes the problem that material structure is loose, intensity declines.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：A kind of iron tap channel swings stream
Mouth prefabricated component, following component is included by mass fraction：5~8 parts of 8~15mm dense aluminas, 20~25 parts of 5~8mm dense aluminas,
15~20 parts of 3~5mm dense aluminas, 10~15 parts of 1~3mm plate diamond spars, 5~10 parts of 0~1mm plate diamond spars, 0~1mm carbon
10~14 parts of SiClx, 5~8 parts of plate diamond spar powder, 6~10 parts of carborundum powder, 5~8 parts of active oxidation aluminium powder, graphite powder 2~4
Part, 2~4 parts of ferro-silicon nitride, 1~3 part of asphalt powder, 1~2 part of boron carbide, 1~2 part of borosilicate glass powder, aluminous cement 1~2
Part, 1~2 part of silicon powder, 0.1~0.2 part of explosion-proof fiber, 0.1~0.2 part of sodium hexametaphosphate.
Preferably, the weight/mass percentage composition of SiC is not less than 97%, Fe in 0~1mm carborundum and carborundum powder2O3
Weight/mass percentage composition be not more than 0.25%；To SiC and Fe in carborundum2O3Content be controlled, it is possible to increase prefabricated component
Anti-scouring high-temperature performance.
Preferably, Al in described aluminous cement2O3Weight/mass percentage composition be not less than 68%；So selection can be effective
The impurity content in cement is reduced, the eutectic of high temperature generation is reduced
Preferably, described explosion-proof fiber fusing point is 85 DEG C；So it is chosen so that explosion-proof fiber is largely waved in vapor
Air vent channel can be just formed before hair, contributes to moisture to discharge
Preferably, following component is included by mass fraction：8 parts of 8~15mm dense aluminas, 20 parts of 5~8mm dense aluminas, 3
20 parts of~5mm dense aluminas, 10 parts of 1~3mm plate diamond spars, 5 parts of 0~1mm plate diamond spars, 14 parts of 0~1mm carborundum, tabular
5 parts of schmigel, 10 parts of carborundum powder, 5 parts of active oxidation aluminium powder, 4 parts of graphite powder, 2 parts of ferro-silicon nitride, 1 part of asphalt powder, boron carbide
2 parts, 1 part of borosilicate glass powder, 2 parts of aluminous cement, 2 parts of silicon powder, 0.1 part of explosion-proof fiber, 0.1 part of sodium hexametaphosphate；The most
Economical and practical structural component.
Preferably, following component is included by mass fraction：5 parts of 8~15mm dense aluminas, 25 parts of 5~8mm dense aluminas, 3
15 parts of~5mm dense aluminas, 15 parts of 1~3mm plate diamond spars, 10 parts of 0~1mm plate diamond spars, 10 parts of 0~1mm carborundum, tabular
8 parts of schmigel, 6 parts of carborundum powder, 8 parts of active oxidation aluminium powder, 2 parts of graphite powder, 4 parts of ferro-silicon nitride, 3 parts of asphalt powder, boron carbide 1
Part, 2 parts of borosilicate glass powder, 1 part of aluminous cement, 1 part of silicon powder, 0.2 part of explosion-proof fiber, 0.2 part of sodium hexametaphosphate；Effect is most
Good structural component.
Preferably, following component is included by mass fraction：6 parts of 8~15mm dense aluminas, 22 parts of 5~8mm dense aluminas, 3
18 parts of~5mm dense aluminas, 12 parts of 1~3mm plate diamond spars, 6 parts of 0~1mm plate diamond spars, 12 parts of 0~1mm carborundum, tabular
6 parts of schmigel, 7 parts of carborundum powder, 7 parts of active oxidation aluminium powder, 2 parts of graphite powder, 3 parts of ferro-silicon nitride, 2 parts of asphalt powder, boron carbide
1 part, 1.5 parts of borosilicate glass powder, 1.5 parts of aluminous cement, 1.5 parts of silicon powder, 0.12 part of explosion-proof fiber, sodium hexametaphosphate 0.12
Part；Cost performance structural component in a balanced way.
A kind of preparation method of iron tap channel swing spout prefabricated component, comprises the following steps successively：
A, various raw materials are prepared mixing in proportion, the outer water for adding up total amount percentage 3.5~4.2% stirs；
B, the raw material that step A is well mixed is poured into mould and pours shaping, and the demoulding, Ran Houyang after being molded 24 hours
Shield 48 hours；
It is put into baking furnace after C, product maintenance, 120 DEG C is warmed up to 10 DEG C/h, is incubated 24 hours；Again with 15 DEG C/h
Programming rate be warmed up to 310 DEG C, be incubated 24 hours；Then 580 DEG C are warmed up to the programming rate of 20 DEG C/h again, insulation 24 is small
When；Natural cooling is lowered the temperature, and iron tap channel swing spout prefabricated component is obtained.
Compared with prior art, it is an advantage of the invention that：Used in iron tap channel swing spout prefabricated component prepared by the present invention
Ferro-silicon nitride improves the bond strength between oxide/non-oxidized substance, Si in material3N4Wetting is difficult with slag iron cause material
Slag resistance strengthens, and the Sialon that material is generated in use is difficult to be oxidized, and changes matrix of materials combining form,
The solid-solid of matrix is improve directly in conjunction with rate, therefore improves the resistance to slag of material.With swing spout single addition SiC or
Si3N4Compare, can further improve swing spout flushing resistance at various temperatures and erosion-resisting characteristics.Borosilicate glass
Glass powder can increase the liquid content in swing spout prefabricated component under the high temperature conditions, improve the bond strength of matrix and aggregate,
Apparent porosity is reduced, the raising to inoxidizability and thermal shock resistance can play a key effect.Prepared by the present invention taps a blast furnace
Ditch swing spout prefabricated component has good scour resistance, elevated temperature strength and antioxygenic property, can keep logical iron higher
Amount, to shortening trough length, reducing cast house area, improve flushing and casting condition and reduce iron runner maintenance cost, reduce
The important roles such as ton iron energy consumption.
Specific embodiment
Embodiment one：
A kind of iron tap channel swing spout prefabricated component, following component is included by mass fraction：8 parts of 8~15mm dense aluminas, 5
20 parts of~8mm dense aluminas, 20 parts of 3~5mm dense aluminas, 10 parts of 1~3mm plate diamond spars, 5 parts of 0~1mm plate diamond spars, 0~
14 parts of 1mm carborundum, 5 parts of plate diamond spar powder, 10 parts of carborundum powder, 5 parts of active oxidation aluminium powder, 4 parts of graphite powder, ferro-silicon nitride 2
Part, 1 part of asphalt powder, 2 parts of boron carbide, 1 part of borosilicate glass powder, 2 parts of aluminous cement, 2 parts of silicon powder, 0.1 part of explosion-proof fiber, six
Metaphosphoric acid receives 0.1 part.
Embodiment two：
A kind of iron tap channel swing spout prefabricated component, following component is included by mass fraction：5 parts of 8~15mm dense aluminas, 5
25 parts of~8mm dense aluminas, 15 parts of 3~5mm dense aluminas, 15 parts of 1~3mm plate diamond spars, 10 parts of 0~1mm plate diamond spars, 0
10 parts of~1mm carborundum, 8 parts of plate diamond spar powder, 6 parts of carborundum powder, 8 parts of active oxidation aluminium powder, 2 parts of graphite powder, ferro-silicon nitride 4
Part, 3 parts of asphalt powder, 1 part of boron carbide, 2 parts of borosilicate glass powder, 1 part of aluminous cement, 1 part of silicon powder, 0.2 part of explosion-proof fiber, six
Metaphosphoric acid receives 0.2 part.
Embodiment three：
A kind of iron tap channel swing spout prefabricated component, following component is included by mass fraction：6 parts of 8~15mm dense aluminas, 5
22 parts of~8mm dense aluminas, 18 parts of 3~5mm dense aluminas, 12 parts of 1~3mm plate diamond spars, 6 parts of 0~1mm plate diamond spars, 0~
12 parts of 1mm carborundum, 6 parts of plate diamond spar powder, 7 parts of carborundum powder, 7 parts of active oxidation aluminium powder, 2 parts of graphite powder, ferro-silicon nitride 3
Part, 2 parts of asphalt powder, 1 part of boron carbide, 1.5 parts of borosilicate glass powder, 1.5 parts of aluminous cement, 1.5 parts of silicon powder, explosion-proof fiber
0.12 part, 0.12 part of sodium hexametaphosphate.
In above three embodiment, the weight/mass percentage composition of SiC is not small in 0~1mm carborundum and carborundum powder
In 97%, Fe2O3Weight/mass percentage composition be not more than 0.25%, Al in aluminous cement2O3Weight/mass percentage composition be not less than
68%, explosion-proof fiber fusing point is 85 DEG C.
A kind of preparation method of iron tap channel swing spout prefabricated component, comprises the following steps successively：
A, various raw materials are prepared mixing in proportion, the outer water for adding up total amount percentage 3.5~4.2% stirs；
B, the raw material that step A is well mixed is poured into mould and pours shaping, and the demoulding, Ran Houyang after being molded 24 hours
Shield 48 hours；
It is put into baking furnace after C, product maintenance, 120 DEG C is warmed up to 10 DEG C/h, is incubated 24 hours；Again with 15 DEG C/h
Programming rate be warmed up to 310 DEG C, be incubated 24 hours；Then 580 DEG C are warmed up to the programming rate of 20 DEG C/h again, insulation 24 is small
When；Natural cooling is lowered the temperature, and iron tap channel swing spout prefabricated component is obtained.
Relative to existing frequently-used preparation method it is the shaping demoulding in 4~6 hours in method, the mode of maintenance 24 hours is supported
The shield time lengthens, and hydrated cementitious are more abundant, and initial strength is effectively guaranteed.
Between oxide/non-oxidized substance being improve in iron tap channel swing spout prefabricated component prepared by the present invention using ferro-silicon nitride
Bond strength, Si in material3N4The slag resistance enhancing that wetting causes material is difficult with slag iron, material is given birth in use
Into Sialon be difficult to be oxidized, and change matrix of materials combining form, improve the solid-solid of matrix directly in conjunction with rate, because
This improves the resistance to slag of material.The single addition SiC or Si with swing spout3N4Compare, can further improve swing spout
Flushing resistance at various temperatures and erosion-resisting characteristics.Borosilicate glass powder can increase swing spout under the high temperature conditions
Liquid content in prefabricated component, improves the bond strength of matrix and aggregate, apparent porosity is reduced, to inoxidizability and anti-thermal shock
The raising of performance can play a key effect.Iron tap channel swing spout prefabricated component prepared by the present invention has good antiscour
Property, elevated temperature strength and antioxygenic property, iron higher can be kept, tapped a blast furnace scene to shortening trough length, reduction
The important role such as product, improvement flushing and casting condition and reduction iron runner maintenance cost, reduction ton iron energy consumption.
Specific embodiment of the invention is the foregoing is only, but technical characteristic of the invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among the scope of the claims of the invention by the change or modification made.
Claims (8)
1. a kind of iron tap channel swing spout prefabricated component, it is characterised in that：Include following component by mass fraction：8~15mm is fine and close
5~8 parts of corundum, 20~25 parts of 5~8mm dense aluminas, 15~20 parts of 3~5mm dense aluminas, 1~3mm plate diamond spars 10~15
Part, 5~10 parts of 0~1mm plate diamond spars, 10~14 parts of 0~1mm carborundum, 5~8 parts of plate diamond spar powder, carborundum powder 6~10
Part, 5~8 parts of active oxidation aluminium powder, 2~4 parts of graphite powder, 2~4 parts of ferro-silicon nitride, 1~3 part of asphalt powder, 1~2 part of boron carbide,
1~2 part of borosilicate glass powder, 1~2 part of aluminous cement, 1~2 part of silicon powder, 0.1~0.2 part of explosion-proof fiber, sodium hexametaphosphate
0.1~0.2 part.
2. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：0~1mm carborundum and
The weight/mass percentage composition of SiC is not less than 97%, Fe in carborundum powder2O3Weight/mass percentage composition be not more than 0.25%.
3. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：In the aluminous cement
Al2O3Weight/mass percentage composition be not less than 68%.
4. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：The explosion-proof fiber fusing point is
85℃。
5. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：Include by mass fraction following
Component：8 parts of 8~15mm dense aluminas, 20 parts of 5~8mm dense aluminas, 20 parts of 3~5mm dense aluminas, 1~3mm plate diamond spars
10 parts, 5 parts of 0~1mm plate diamond spars, 14 parts of 0~1mm carborundum, 5 parts of plate diamond spar powder, 10 parts of carborundum powder, activated alumina
5 parts of powder, 4 parts of graphite powder, 2 parts of ferro-silicon nitride, 1 part of asphalt powder, 2 parts of boron carbide, 1 part of borosilicate glass powder, 2 parts of aluminous cement,
2 parts of silicon powder, 0.1 part of explosion-proof fiber, 0.1 part of sodium hexametaphosphate.
6. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：Include by mass fraction following
Component：5 parts of 8~15mm dense aluminas, 25 parts of 5~8mm dense aluminas, 15 parts of 3~5mm dense aluminas, 1~3mm plate diamond spars
15 parts, 10 parts of 0~1mm plate diamond spars, 10 parts of 0~1mm carborundum, 8 parts of plate diamond spar powder, 6 parts of carborundum powder, activated alumina
8 parts of powder, 2 parts of graphite powder, 4 parts of ferro-silicon nitride, 3 parts of asphalt powder, 1 part of boron carbide, 2 parts of borosilicate glass powder, 1 part of aluminous cement,
1 part of silicon powder, 0.2 part of explosion-proof fiber, 0.2 part of sodium hexametaphosphate.
7. a kind of iron tap channel swing spout prefabricated component as claimed in claim 1, it is characterised in that：Include by mass fraction following
Component：6 parts of 8~15mm dense aluminas, 22 parts of 5~8mm dense aluminas, 18 parts of 3~5mm dense aluminas, 1~3mm plate diamond spars
12 parts, 6 parts of 0~1mm plate diamond spars, 12 parts of 0~1mm carborundum, 6 parts of plate diamond spar powder, 7 parts of carborundum powder, activated alumina
7 parts of powder, 2 parts of graphite powder, 3 parts of ferro-silicon nitride, 2 parts of asphalt powder, 1 part of boron carbide, 1.5 parts of borosilicate glass powder, aluminous cement 1.5
Part, 1.5 parts of silicon powder, 0.12 part of explosion-proof fiber, 0.12 part of sodium hexametaphosphate.
8. the method for preparing fabricated member of iron tap channel swing spout prefabricated component described in a kind of use claim 1, it is characterised in that：According to
It is secondary to comprise the following steps：
A, various raw materials are prepared mixing in proportion, the outer water for adding up total amount percentage 3.5~4.2% stirs；
B, the raw material that step A is well mixed is poured into mould and pours shaping, and the demoulding after being molded 24 hours, then conserve 48
Hour；
It is put into baking furnace after C, product maintenance, 120 DEG C is warmed up to 10 DEG C/h, is incubated 24 hours；Again with the liter of 15 DEG C/h
Warm speed is warmed up to 310 DEG C, is incubated 24 hours；Then 580 DEG C are warmed up to the programming rate of 20 DEG C/h again, are incubated 24 hours；
Natural cooling is lowered the temperature, and iron tap channel swing spout prefabricated component is obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611063981.XA CN106702056A (en) | 2016-11-28 | 2016-11-28 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611063981.XA CN106702056A (en) | 2016-11-28 | 2016-11-28 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
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ID=58934060
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| CN201611063981.XA Pending CN106702056A (en) | 2016-11-28 | 2016-11-28 | Iron tap channel swing spout prefabricated piece and manufacturing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107324783A (en) * | 2017-06-20 | 2017-11-07 | 浙江锦诚新材料股份有限公司 | A kind of skimming tool crossbeam quick change prefabricated component and preparation method thereof |
| CN108585804A (en) * | 2018-05-24 | 2018-09-28 | 武汉科技大学 | A kind of circulating fluidized bed boiler burner prefabricated component and preparation method thereof |
| CN110843112A (en) * | 2019-10-25 | 2020-02-28 | 广东广青金属科技有限公司 | Method for manufacturing branch iron runner and lower slag runner spout prefabricated part and pouring mold |
| CN113683401A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Manufacturing process of main channel iron slag separator |
| CN114933470A (en) * | 2022-05-27 | 2022-08-23 | 襄阳聚力新材料科技有限公司 | Erosion-resistant castable for cored furnace |
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| CN104829244A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Tertiary air duct curve prefabricated component for cement kiln |
| CN104829242A (en) * | 2015-04-10 | 2015-08-12 | 浙江锦诚耐火材料有限公司 | Preparation method of tertiary air duct curve prefabricated component used for cement kiln |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107324783A (en) * | 2017-06-20 | 2017-11-07 | 浙江锦诚新材料股份有限公司 | A kind of skimming tool crossbeam quick change prefabricated component and preparation method thereof |
| CN108585804A (en) * | 2018-05-24 | 2018-09-28 | 武汉科技大学 | A kind of circulating fluidized bed boiler burner prefabricated component and preparation method thereof |
| CN108585804B (en) * | 2018-05-24 | 2020-09-22 | 武汉科技大学 | Circulating fluidized bed boiler burner prefabricated part and preparation method thereof |
| CN110843112A (en) * | 2019-10-25 | 2020-02-28 | 广东广青金属科技有限公司 | Method for manufacturing branch iron runner and lower slag runner spout prefabricated part and pouring mold |
| CN113683401A (en) * | 2020-05-19 | 2021-11-23 | 中冶宝钢技术服务有限公司 | Manufacturing process of main channel iron slag separator |
| CN114933470A (en) * | 2022-05-27 | 2022-08-23 | 襄阳聚力新材料科技有限公司 | Erosion-resistant castable for cored furnace |
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Application publication date: 20170524 |