CN106747500A - Large face of converter artesian repairing material and preparation method thereof - Google Patents
Large face of converter artesian repairing material and preparation method thereof Download PDFInfo
- Publication number
- CN106747500A CN106747500A CN201611114272.XA CN201611114272A CN106747500A CN 106747500 A CN106747500 A CN 106747500A CN 201611114272 A CN201611114272 A CN 201611114272A CN 106747500 A CN106747500 A CN 106747500A
- Authority
- CN
- China
- Prior art keywords
- converter
- large face
- magnesia carbon
- carbon brick
- bonding agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63472—Condensation polymers of aldehydes or ketones
- C04B35/63476—Phenol-formaldehyde condensation polymers
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63496—Bituminous materials, e.g. tar, pitch
Abstract
The invention belongs to amorphous refractory technical field, and in particular to a kind of large face of converter artesian repairing material and preparation method thereof.For existing Large face repair material of converter service life is short, high cost the problems such as, the present invention provides large face of converter artesian repairing material prepared by a kind of utilization waste magnesia carbon brick, and its raw material includes：30~35 parts of the waste magnesia carbon brick of 5~10mm, 30~35 parts of the waste magnesia carbon brick of 1~5mm, 15~20 parts of magnesium powder of sintering, 15~20 parts of bonding agent.The present invention also provides a kind of preparation method of the material for repairing, first selected waste magnesia carbon brick and prepares bonding agent, then after waste magnesia carbon brick is mixed, adds diesel oil, adds sintering magnesium powder and bonding agent to obtain final product after stirring and evenly mixing.The present invention takes full advantage of discarded magnesia carbon brick, the large face of converter artesian repairing material of preparation has good mobile performance and elevated temperature strength, with sintering time is short, easy to use, the low performance of production cost, product quality requirement can not only be met, also reduce production cost.
Description
Technical field
The invention belongs to amorphous refractory technical field, and in particular to a kind of large face of converter artesian repairing material and its
Preparation method.
Background technology
Magnesia carbon brick as a kind of common sizing refractory material, at positions such as steelwork converter working lining, ladle slag lines
Extensive use in brick-building art, it has excellent resistance to slag corrosion, slag penetration, thermal shock resistance and thermal conductivity.It is major
Steel mill can all produce substantial amounts of waste magnesia carbon brick every year, this waste magnesia carbon brick by after selected, peeling sinter layer off, with compared with
Low impurity content, wherein usual content of MgO is 60~70%, C content, 10~20%, is a kind of fire proofed wood of very high-quality
Material secondary resource.
Meeting for steelmaking converter is untouchable, that is, we are generally " the big face " said, big face furnace lining material (usually magnesia carbon brick)
In use, not only by the chemical erosion of high-temperature molten steel and slag, and also suffer from the strength of molten steel and wash away and steel scrap
The shock of material.These unfavorable conditions can accelerate the advanced damage of the furnace lining material of large face of converter, and then influence the normal of steel-making
Production.In order to solve this case, pitch and tar combination magnesia refractories are generally used as the repairing material of large face of converter
Material, but this kind of material needs to boil pitch in process of production, and needs are kneaded under hot, and production technology is multiple
It is miscellaneous, bulk can be formed after cooling, because heating surface area is limited in the big face mending course of converter, cause sintering time long,
And it is relatively slow due to being heated, the mobility of material for repairing is influenceed, it is difficult to meet under the conditions of the compact process for making of current rhythm of production
Use requirement, for extension converter lining life-span DeGrain.Other some steel mills are using the large face of converter combined using water
Material for repairing, the material for repairing that water system is combined has preferably construction mobile performance and shorter firm time, but its high temperature is anti-
Folding intensity and attachment sintering strength are relatively low.
The content of the invention
For above-mentioned technical problem, in order to improve the service life and construction convenience of Large face repair material of converter, reduce
Production cost, the present invention provides large face of converter artesian repairing material prepared by a kind of utilization waste magnesia carbon brick and preparation method thereof.
The present invention provides a kind of large face of converter artesian repairing material, and its raw material includes：Count by weight, 5~10mm's is useless
30~35 parts of magnesia carbon brick, 30~35 parts of the waste magnesia carbon brick of 1~5mm, 15~20 parts of magnesium powder of sintering, 15~20 parts of bonding agent.
Wherein, in above-mentioned large face of converter artesian repairing material, also including accounting for waste magnesia carbon brick, sintering magnesium powder, bonding agent gross weight 1
The diesel oil of~3wt%；Preferably, the diesel oil is 0#Diesel oil.
Wherein, in above-mentioned large face of converter artesian repairing material, described waste magnesia carbon brick composition includes：Content of MgO 60~
70wt%, 10~20wt% of C content.
Wherein, in above-mentioned large face of converter artesian repairing material, content of MgO >=90wt% in described sintering magnesium powder, granularity is
Cross 180 mesh sieves.
Wherein, in above-mentioned large face of converter artesian repairing material, described bonding agent composition is：By weight percentage, pitch
78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~4%, powdered phenol-formaldehyde resin 3%
~8%.
The present invention also provides a kind of above-mentioned large face of converter artesian repairing material bonding agent, consisting of：By weight percentage
Meter, pitch 78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~4%, powdered phenolic
Resin 3%~8%.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the pitch is the middle temperature modified coal tar pitch of one-level.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, toluene insolubles content 28% in the pitch~
34%th, quinoline insolubles content 8%~14%, β-resin content >=18%, softening point are 100~115 DEG C, coking value >=
54%, ash content≤0.3%, moisture≤5%, granularity≤1mm.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the Fe of the brown iron oxide2O3Content >=90wt%,
Granularity was 180 mesh sieves.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the Al content >=98wt% of described metallic aluminium powder,
Granularity≤1mm.
Wherein, in the above-mentioned special bonding agent of large face of converter artesian repairing material, described caprolactam technical indicator state of enforcement
Family standard GB/T 13254-2008；Powdered phenol-formaldehyde resin technical indicator performs national standard.
Present invention also offers a kind of preparation method of above-mentioned large face of converter artesian repairing material, comprise the following steps：
The selected and processing of a, waste magnesia carbon brick
The waste magnesia carbon brick of recovery is carried out selected, go the removal of impurity and peel the sinter layer on top layer off, then crush, be sieved into granularity
It is the waste magnesia carbon brick of 1~5mm and 5~10mm；
B, prepare bonding agent
By 78~90% pitch, 3~6% brown iron oxide, 2~4% metallic aluminium powder, 2~4% caprolactam, 3
~8% powdered phenol-formaldehyde resin is mixed, and bonding agent is obtained；
The preparation of c, large face of converter artesian repairing material
30~35 parts of waste magnesia carbon bricks and 30~35 parts of waste magnesia carbon bricks of 1~5mm of 5~10mm are first added, after stirring and evenly mixing,
Add and account for waste magnesia carbon brick, sintering magnesium powder, the diesel oil of 1~3wt% of bonding agent gross weight, stir and evenly mix, it is ensured that diesel oil is by useless magnesium
Carbon brick is fully soaked, sequentially add 15~20 parts sintering magnesium powder and 15~20 parts of bonding agents, stir and evenly mix, be obtained converter it is big
Face artesian repairing material.
Wherein, in above-mentioned large face of converter artesian repairing preparation method for material, the mixing time described in step b is 5~8min,
The time that stirs and evenly mixs described in step c is respectively 2~5min, 5~8min and 5~8min.
Beneficial effects of the present invention are：The present invention prepares large face of converter artesian repairing material using waste magnesia carbon brick, and original is discarded
Magnesia carbon brick be fully used, the large face of converter artesian repairing material of preparation has good mobile performance and high temperature strong
Degree, and with sintering time is short, easy to use, the low performance of production cost, product quality requirement can not only be met, also drop
Low production cost, is that the utilization of waste magnesia carbon brick opens a kind of new method.
Specific embodiment
The invention provides a kind of large face of converter artesian repairing material, its raw material includes：Count by weight, 5~10mm's
30~35 parts of waste magnesia carbon brick, 30~35 parts of the waste magnesia carbon brick of 1~5mm, 15~20 parts of magnesium powder of sintering, 15~20 parts of bonding agent.
Wherein, in above-mentioned large face of converter artesian repairing material, also including accounting for waste magnesia carbon brick, sintering magnesium powder, bonding agent gross weight 1
The diesel oil of~3wt%；Preferably, the diesel oil is 0#Diesel oil.
Wherein, in above-mentioned large face of converter artesian repairing material, described waste magnesia carbon brick composition includes：Content of MgO 60~
70wt%, 10~20wt% of C content.
Wherein, in above-mentioned large face of converter artesian repairing material, content of MgO >=90wt% in described sintering magnesium powder, granularity mistake
180 mesh sieves.
Wherein, in above-mentioned large face of converter artesian repairing material, described bonding agent composition is：By weight percentage, pitch
78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~4%, powdered phenol-formaldehyde resin 3%
~8%.
In the present invention large face of converter artesian repairing material, raw material waste magnesia carbon brick composition and Converter are prepared from waste magnesia carbon brick
Lining refractory brick is approximate, with excellent resistance to slag corrosion, slag penetration, thermal shock resistance and thermal conductivity, and waste magnesia carbon brick
In contained C compositions typically provided by crystalline flake graphite, its not only fusing point and stability with superelevation, and at high temperature can
There is effective physical reaction in the various composition in enough and bonding agent, greatly improve the properties of material for repairing；Use cooperatively again
Sintering magnesium powder, the powder base of refractoriness high is provided for material for repairing, and have adjusted the grade collocation of material for repairing so that material for repairing
With enough refractoriness and mobility；The addition of diesel oil is played a part of to soak raw material, and causes to repair in the presence of high temperature
Feed supplement inside fully sintering, improves sintering efficiency.
The present invention also provides a kind of above-mentioned large face of converter artesian repairing material bonding agent, consisting of：By weight percentage
Meter, pitch 78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~4%, powdered phenolic
Resin 3%~8%.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the pitch is the middle temperature modified coal tar pitch of one-level.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, toluene insolubles content 28% in the pitch~
34%th, quinoline insolubles content 8%~14%, β-resin content >=18%, softening point are 100~115 DEG C, coking value >=
54%, ash content≤0.3%, moisture≤5%, granularity≤1mm.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the Fe of the brown iron oxide2O3Content >=90wt%,
Granularity was 180 mesh sieves.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, the Al content >=98wt% of described metallic aluminium powder,
Granularity≤1mm.
Wherein, in above-mentioned large face of converter artesian repairing material bonding agent, described caprolactam technical indicator performs country
Standard GB/T 13254-2008；Powdered phenol-formaldehyde resin technical indicator performs national standard.
The present invention has selected special bonding agent when large face of converter artesian repairing material is prepared, from the middle temperature modification of one-level
Pitch so that large face of converter gravity flow mending material has good gravity flow performance at high temperature, and pitch is sintered in mending material
Coordinate powdered phenol-formaldehyde resin to form uniform carbon web frame staggeredly in journey, take into account the mobile performance and sintering strength of material for repairing；
Additionally, the middle temperature modified coal tar pitch impurity content of one-level is low, will not cause because the too high appearance of temperature softens after the completion of bonding agent production
Bonding agent bonding failure.A certain amount of brown iron oxide is also added into bonding agent, material for repairing sintering at high temperature is promoted, carried
Rise its elevated temperature strength.Metallic aluminium powder in bonding agent causes that Al and C react generation Al at high temperature4C3Whisker, can play fiber
Enhanced effect so that the intensity of material for repairing is greatly improved.Caprolactam belongs to free-flow agent in bonding agent system, it plus
Enter to greatly improve the gravity flow performance of material for repairing.It is of the invention special by by the appropriate proportioning of above-mentioned raw materials, having prepared
Bonding agent, the application of the bonding agent can significantly improve the construction mobility and sintering strength of material for repairing, the material for repairing of preparation
It is convenient and swift in use, with the life-span higher.
Present invention also offers a kind of above-mentioned large face of converter artesian repairing preparation method for material, comprise the following steps：
The selected and processing of a, waste magnesia carbon brick
Collected from steel mill and obtain waste magnesia carbon brick, by artificial sort out bulk waste magnesia carbon brick, remove the impurity such as slag, and
Sinter layer is peeled off, waste magnesia carbon brick content of MgO 60%~70%, C content 10%~20% is controlled, will by broken, screening installation
Waste magnesia carbon brick granularity is worked into 1~5mm and 5~10mm is standby；
B, prepare bonding agent
By 78~90% pitch, 3~6% brown iron oxide, 2~4% metallic aluminium powder, 2~4% caprolactam, 3
~8% powdered phenol-formaldehyde resin mixes more than 5min in being put into mixer, and bonding agent is obtained；
The preparation of c, large face of converter artesian repairing material
30~35 parts of waste magnesia carbon bricks and 30~35 parts of waste magnesia carbon bricks of 1~5mm of 5~10mm are first added, after stirring and evenly mixing,
Add and account for waste magnesia carbon brick, sintering magnesium powder, the diesel oil of 1~3wt% of bonding agent gross weight, stir and evenly mix, it is ensured that diesel oil is by useless magnesium
Carbon brick is fully soaked, sequentially add 15~20 parts sintering magnesium powder and 15~20 parts of bonding agents, stir and evenly mix, be obtained converter it is big
Face artesian repairing material.
Wherein, in above-mentioned large face of converter artesian repairing preparation method for material, the mixing time described in step b is 5~8min,
The time that stirs and evenly mixs described in step c is respectively 2~5min, 5~8min and 5~8min.
With reference to embodiment, the invention will be further described, but does not therefore limit the present invention to described implementation
Among example scope.
Waste magnesia carbon brick in embodiment is obtained by recovery, selected, processing；The raw materials such as sintering magnesium powder, diesel oil are purchased by market
；Bonding agent is voluntarily produced and obtained, and component by following weight percentage is constituted：The middle temperature modified coal tar pitch 78~90% of one-level,
Brown iron oxide 3~6%, metallic aluminium powder 2~4%, caprolactam 2~4%, powdered phenol-formaldehyde resin 3~8%.
Embodiment 1
Large face of converter artesian repairing material factory formula is as follows in embodiment 1：
Large face of converter artesian repairing material bonding agent factory formula is shown in Table 1：
The large face of converter artesian repairing material bonding agent factory formula of 1 embodiment of table 1
| Raw material title | Proportioning/% |
| The middle temperature modified coal tar pitch of one-level | 78 |
| Brown iron oxide | 6 |
| Metallic aluminium powder | 4 |
| Caprolactam | 4 |
| Powdered phenol-formaldehyde resin | 8 |
Large face of converter artesian repairing material factory formula is shown in Table 2
The large face of converter artesian repairing material factory formula of 2 embodiment of table 1
| Raw material title | Proportioning/% | Remarks |
| Waste magnesia carbon brick | 30 | 5~10mm of granularity |
| Waste magnesia carbon brick | 30 | 1~5mm of granularity |
| Sintering magnesium powder | 20 | The mesh of granularity -180 |
| Bonding agent | 20 | It is obtained by being formulated in table 1 |
| Diesel oil | 3 | It is additional |
Preparation method is comprised the following steps：
The selected and processing of a, waste magnesia carbon brick
The waste magnesia carbon brick of recovery is carried out selected, go the removal of impurity and peel the sinter layer on top layer off, then crush, be sieved into granularity
It is the waste magnesia carbon brick of 1~5mm and 5~10mm；
B, prepare bonding agent
The raw material of table 1 is weighed by proportioning, is mixed, bonding agent is obtained；
The preparation of c, large face of converter artesian repairing material
Raw material is weighed up by the proportioning of table 2, the waste magnesia carbon brick of 5~10mm and the waste magnesia carbon brick of 1~5mm is first added, stirring is mixed
After even, diesel oil is added, stirred and evenly mixed, it is ensured that diesel oil fully soaks waste magnesia carbon brick, sequentially add sintering magnesium powder and combination
Agent, stirs and evenly mixs, and large face of converter artesian repairing material is obtained.
The large face of converter artesian repairing material that embodiment 1 is prepared is in the maintenance of certain steel mill 220t steelmaking converters furnace lining
Use, material for repairing 1~2 is delivered to the big face of steelmaking converter (meeting untouchable) according to steelmaking converter furnace lining melting loss degree during use
Ton, carries out grate operation (grate inclination angle be 40 °~50 °) after dispensing, general grate 2~3 times, after the completion of grate by converter shake to
Certain inclination angle so that material for repairing is horizontal as far as possible, in benefit operating process is thrown, material for repairing can soften rapidly
And natural levelling, carry out oxygen blast operation auxiliary material for repairing to repairing position after material for repairing nature levelling and sinter, oxygen blow duration 5~
10min, averagely 20min can complete sintering after oxygen blast terminates, and flue dust is small in sintering process, and sintering time is short, entirely repairs
Cheng Jiben can be controlled within 30min, once repair service life average out to 55 times, be with original dolomite, magnesia, pitch
The material for repairing of primary raw material is compared, and service life can be improved more than 15 times, and it is left that average sintering time can also reduce 10min
Do not occur during the right side, and use because sintering not exclusively caused by the phenomenon such as drop off.
Embodiment 2
Large face of converter artesian repairing material factory formula is as follows in embodiment 2：
Large face of converter artesian repairing material bonding agent factory formula is shown in Table 3：
The large face of converter artesian repairing material bonding agent factory formula of 3 embodiment of table 2
| Raw material title | Proportioning/% |
| The middle temperature modified coal tar pitch of one-level | 90 |
| Brown iron oxide | 3 |
| Metallic aluminium powder | 2 |
| Caprolactam | 2 |
| Powdered phenol-formaldehyde resin | 3 |
Large face of converter artesian repairing material factory formula is shown in Table 4
The large face of converter artesian repairing material factory formula of 4 embodiment of table 2
| Raw material title | Proportioning/% | Remarks |
| Waste magnesia carbon brick | 35 | 5~10mm of granularity |
| Waste magnesia carbon brick | 35 | 1~5mm of granularity |
| Sintering magnesium powder | 15 | The mesh of granularity -180 |
| Bonding agent | 15 | It is obtained by being formulated in table 3 |
| Diesel oil | 1 | It is additional |
Preparation method is comprised the following steps：
The selected and processing of a, waste magnesia carbon brick
The waste magnesia carbon brick of recovery is carried out selected, go the removal of impurity and peel the sinter layer on top layer off, then crush, be sieved into granularity
It is the waste magnesia carbon brick of 1~5mm and 5~10mm；
B, prepare bonding agent
The raw material of table 3 is weighed by proportioning, is mixed, bonding agent is obtained；
The preparation of c, large face of converter artesian repairing material
Raw material is weighed up by the proportioning of table 4, the waste magnesia carbon brick of 5~10mm and the waste magnesia carbon brick of 1~5mm is first added, stirring is mixed
After even, diesel oil is added, stirred and evenly mixed, it is ensured that diesel oil fully soaks waste magnesia carbon brick, sequentially add sintering magnesium powder and combination
Agent, stirs and evenly mixs, and large face of converter artesian repairing material is obtained.
The large face of converter artesian repairing material that embodiment 2 is prepared is in the maintenance of certain steel mill 220t converter extracting vanadiums furnace lining
Use, material for repairing 1~2 is delivered to the big face of steelmaking converter (meeting untouchable) according to converter extracting vanadium furnace lining melting loss degree during use
Ton, carries out grate operation (grate inclination angle be 40 °~50 °) after dispensing, general grate 2~3 times, after the completion of grate by converter shake to
Certain inclination angle so that material for repairing is horizontal as far as possible, in benefit operating process is thrown, material for repairing can soften rapidly
And natural levelling, carry out oxygen blast operation auxiliary material for repairing to repairing position after material for repairing nature levelling and sinter, oxygen blow duration 5~
10min, averagely 25min can complete sintering after oxygen blast terminates, and flue dust is small in sintering process, and sintering time is short, entirely repairs
Cheng Jiben can be controlled within 40min, once repair service life average out to 65 times, be with original dolomite, magnesia, pitch
The material for repairing of primary raw material is compared, and service life can be improved more than 20 times, and it is left that average sintering time can also reduce 15min
Do not occur during the right side, and use because sintering not exclusively caused by the phenomenon such as drop off.
In sum, large face of converter artesian repairing material provided by the present invention is based on the waste magnesia carbon brick resource using recovery
A kind of high-quality loose refractory for wanting raw material to produce, has good mobility, with fire resisting higher in work progress
The flue dust produced in degree and sintering strength, and sintering process is small, and sintering time is short, long service life.Maximum bright spot of the invention
It is exactly that, with waste magnesia carbon brick as main raw material(s), with the use of special bonding agent, it can not only well match converter lining
Material, merges completely in mending course with furnace lining, difficult for drop-off when using, and composition in material for repairing is fully immersed into furnace lining
In, the noresidue during follow-up use will not introduce impurity；Further, it is possible to substantially reduce the production of Large face repair material of converter
Cost, meets the policy of national green, recycling economy, has a extensive future.
Claims (10)
1. large face of converter artesian repairing material, it is characterised in that raw material includes：Count by weight, the waste magnesia carbon brick 30 of 5~10mm
~35 parts, 30~35 parts of the waste magnesia carbon brick of 1~5mm, sintering 15~20 parts of magnesium powder, 15~20 parts of bonding agent.
2. large face of converter artesian repairing material according to claim 1, it is characterised in that：Also include accounting for waste magnesia carbon brick, sintering
The diesel oil of magnesium powder, 1~3wt% of bonding agent gross weight.
3. large face of converter artesian repairing material according to claim 1, it is characterised in that：Described waste magnesia carbon brick composition bag
Include, 60~70wt% of content of MgO, 10~20wt% of C content.
4. large face of converter artesian repairing material according to claim 1, it is characterised in that：MgO contains in described sintering magnesium powder
Amount >=90wt%, granularity was 180 mesh sieves.
5. large face of converter artesian repairing material according to claim 1, it is characterised in that：Described bonding agent is constituted：Press
Percentage by weight meter, pitch 78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~
4%th, powdered phenol-formaldehyde resin 3%~8%.
6. the large face of converter artesian repairing material bonding agent described in any one of Claims 1 to 5, it is characterised in that：Consisting of：
By weight percentage, pitch 78%~90%, brown iron oxide 3%~6%, metallic aluminium powder 2%~4%, caprolactam 2%~
4%th, powdered phenol-formaldehyde resin 3%~8%.
7. large face of converter artesian repairing material bonding agent according to claim 6, it is characterised in that：The pitch is one-level
Middle temperature modified coal tar pitch.
8. large face of converter artesian repairing material bonding agent according to claim 6, it is characterised in that meet following any one
：
Toluene insolubles content 28%~34%, quinoline insolubles content 8%~14%, β-resin content in the pitch >=
18%, softening point is 100~115 DEG C, coking value >=54%, ash content≤0.3%, moisture≤5%, granularity≤1mm；
The Fe of the brown iron oxide2O3Content >=90wt%, granularity was 180 mesh sieves；
Al content >=the 98wt% of described metallic aluminium powder, granularity≤1mm.
9. the large face of converter artesian repairing preparation method for material described in any one of Claims 1 to 5, it is characterised in that including following
Step：
The selected and processing of a, waste magnesia carbon brick
The waste magnesia carbon brick of recovery is carried out selected, go the removal of impurity and peel the sinter layer on top layer off, then it is 1 to crush, be sieved into granularity
The waste magnesia carbon brick of~5mm and 5~10mm；
B, prepare bonding agent
By 78~90% pitch, 3~6% brown iron oxide, 2~4% metallic aluminium powder, 2~4% caprolactam, 3~
8% powdered phenol-formaldehyde resin is mixed, and bonding agent is obtained；
The preparation of c, large face of converter artesian repairing material
30~35 parts of waste magnesia carbon bricks and 30~35 parts of waste magnesia carbon bricks of 1~5mm of 5~10mm are first added, after stirring and evenly mixing, then is added
Enter to account for waste magnesia carbon brick, sintering magnesium powder, the diesel oil of 1~3wt% of bonding agent gross weight, stir and evenly mix, it is ensured that diesel oil is by waste magnesia carbon brick
Fully wetting, sequentially add 15~20 parts sintering magnesium powder and 15~20 parts of bonding agents, stir and evenly mix, be obtained large face of converter from
Stream material for repairing.
10. the preparation method of large face of converter artesian repairing material according to claim 9, it is characterised in that：Described in step b
Mixing time be 5~8min, the time that stirs and evenly mixs described in step c is respectively 2~5min, 5~8min and 5~8min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114272.XA CN106747500A (en) | 2016-12-07 | 2016-12-07 | Large face of converter artesian repairing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611114272.XA CN106747500A (en) | 2016-12-07 | 2016-12-07 | Large face of converter artesian repairing material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106747500A true CN106747500A (en) | 2017-05-31 |
Family
ID=58874563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611114272.XA Pending CN106747500A (en) | 2016-12-07 | 2016-12-07 | Large face of converter artesian repairing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106747500A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850229A (en) * | 2020-06-29 | 2020-10-30 | 湖南华菱湘潭钢铁有限公司 | Maintenance method for charging side of converter lining |
| CN111960835A (en) * | 2020-08-28 | 2020-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Pointing material for reducing oxidation of electric furnace magnesia carbon brick and preparation and use methods thereof |
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
| CN112707720A (en) * | 2021-01-31 | 2021-04-27 | 鞍山赛诺新材料有限公司 | Anhydrous converter large fabric with self-flowing effect |
| CN115947589A (en) * | 2022-07-27 | 2023-04-11 | 江西联达冶金有限公司 | Converter lining gunning mix with strong adhesive force |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550016A (en) * | 2009-04-28 | 2009-10-07 | 莱芜钢铁集团有限公司 | Magnesia chrome carbon coating and preparation method thereof |
| CN101973775A (en) * | 2010-11-09 | 2011-02-16 | 攀枝花钢城集团有限公司 | Repairing mass and preparation method thereof |
| CN102115334A (en) * | 2009-12-31 | 2011-07-06 | 鞍钢实业集团有限公司一钢分公司 | Low-cost magnesia converter lining patching material and preparation method thereof |
| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
| CN102603342A (en) * | 2012-04-10 | 2012-07-25 | 辽宁富城特种耐火材料有限公司 | Novel MaO-CaO-C dry type gunning material |
| CN105801136A (en) * | 2016-02-04 | 2016-07-27 | 北京利尔高温材料股份有限公司 | Converter repairing mass and preparation method thereof |
-
2016
- 2016-12-07 CN CN201611114272.XA patent/CN106747500A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550016A (en) * | 2009-04-28 | 2009-10-07 | 莱芜钢铁集团有限公司 | Magnesia chrome carbon coating and preparation method thereof |
| CN102115334A (en) * | 2009-12-31 | 2011-07-06 | 鞍钢实业集团有限公司一钢分公司 | Low-cost magnesia converter lining patching material and preparation method thereof |
| CN101973775A (en) * | 2010-11-09 | 2011-02-16 | 攀枝花钢城集团有限公司 | Repairing mass and preparation method thereof |
| CN102503496A (en) * | 2011-11-17 | 2012-06-20 | 江苏苏嘉集团新材料有限公司 | Magnesium carbon pouring material |
| CN102603342A (en) * | 2012-04-10 | 2012-07-25 | 辽宁富城特种耐火材料有限公司 | Novel MaO-CaO-C dry type gunning material |
| CN105801136A (en) * | 2016-02-04 | 2016-07-27 | 北京利尔高温材料股份有限公司 | Converter repairing mass and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111850229A (en) * | 2020-06-29 | 2020-10-30 | 湖南华菱湘潭钢铁有限公司 | Maintenance method for charging side of converter lining |
| CN111960835A (en) * | 2020-08-28 | 2020-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Pointing material for reducing oxidation of electric furnace magnesia carbon brick and preparation and use methods thereof |
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
| CN112707720A (en) * | 2021-01-31 | 2021-04-27 | 鞍山赛诺新材料有限公司 | Anhydrous converter large fabric with self-flowing effect |
| CN115947589A (en) * | 2022-07-27 | 2023-04-11 | 江西联达冶金有限公司 | Converter lining gunning mix with strong adhesive force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106747500A (en) | Large face of converter artesian repairing material and preparation method thereof | |
| CN107673756B (en) | Mineral hot furnace magnesia anhydrous stemming and preparation method thereof | |
| CN103626506B (en) | Environment-friendly hot patching material for converter | |
| CN107354358A (en) | The method for preparing high carbon ferro-chrome | |
| CN102898170A (en) | Anhydrous stemming for blast furnace tapping hole | |
| CN107793163A (en) | A kind of coverter pig mending material and its preparation and application | |
| CN103468840A (en) | Furnace-protecting material for blast furnaces and preparation and application methods thereof | |
| CN112358302B (en) | Self-repairing anhydrous stemming | |
| CN101775492A (en) | Method for producing ferrum-silicon-aluminium alloy by aluminium ashes and copper slag | |
| CN101831541B (en) | Method for comprehensively utilizing molten slag and carbonitriding slag | |
| CN103449828A (en) | Repairing mass based on used magnesia carbon refractory and preparation method of repairing mass | |
| CN110372341A (en) | A kind of ramming mass type slag runner dam | |
| CN105645970B (en) | The fettling sand and its production method of a kind of environment-friendly type high life | |
| CN111606694B (en) | Converter carbon repairing material and preparation method thereof | |
| CN108911709A (en) | A kind of mending material for converter | |
| CN106939368B (en) | A kind of ladle carburant and preparation method thereof | |
| CN107189800A (en) | A kind of coking process and products thereof and application | |
| CN107793161A (en) | A kind of magnesia carbon brick refractory material and preparation method thereof | |
| CN101823894A (en) | Baking-free carbon rammed mass and preparation method thereof | |
| CN106915951A (en) | A kind of environment-friendly composite mending material and preparation method thereof | |
| CN101967530B (en) | Method for reducing iron by smelting reduction in electrometallurgy | |
| CN107142120A (en) | A kind of high response coke and preparation method thereof | |
| CN102424586A (en) | Preparation method of SiC fireproof raw material powder | |
| CN107759203A (en) | A kind of environmentally-friendly water-based gravity flow mending material and preparation method thereof | |
| CN103819205A (en) | Quick fettling material of induction furnace and fettling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |