CN107311673A - A kind of ladle magnesia carbon brick protection materials and its preparation method and application - Google Patents
A kind of ladle magnesia carbon brick protection materials and its preparation method and application Download PDFInfo
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- CN107311673A CN107311673A CN201710537632.5A CN201710537632A CN107311673A CN 107311673 A CN107311673 A CN 107311673A CN 201710537632 A CN201710537632 A CN 201710537632A CN 107311673 A CN107311673 A CN 107311673A
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- carbon brick
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
- C04B2235/365—Borosilicate glass
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
- C04B2235/424—Carbon black
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to a kind of ladle magnesia carbon brick protection materials and its preparation method and application, the material contains following components based on weight/mass percentage composition：Kaolin 25 40%；Boron glass powder 20 30%；Titanium dioxide 10 20%；Sodium metasilicate 5 12%；Polyvinyl alcohol 2 10%；Carbon black 2 5%.Protection materials prepared by the present invention are molten into the diaphragm of glassy state during heating, have completely cut off air, and then the carbon in magnesia carbon brick can be prevented to be oxidized during ladle baking, suppress the generation of decarburized layer, greatly improve the service life of magnesia carbon brick.And the protection materials raw material of gained is cheap and easy to get, carbon black loading is few, reduces production cost.The ladle magnesia carbon brick protection materials that the present invention is obtained are applied to industrialized production, have broad application prospects and good economic benefit.
Description
Technical field
The present invention relates to metallurgical material technical field, and in particular to a kind of ladle magnesia carbon brick protection materials and its preparation side
Method and application.
Background technology
Magnesia carbon brick is with the alkaline oxides magnesium (2800 DEG C of fusing point) of high-melting-point and is difficult to high-melting-point that profit is invaded by clinker
Carbon materials adds various non-oxidized substance additives as raw material.The composite fire of not making charcoal being combined into carbonaceous bonding agent
Material.Magnesia carbon brick is mainly used in converter, ac arc furnace, the liner of direct current electric arc furnace, the position such as slag line of ladle.
In smelting process, need to toast ladle liner before molten steel is loaded, baking temperature is probably on 1200 DEG C of left sides
It is right.Due to containing carbon materials in magnesia carbon brick, it can react in baking process with the oxygen in air, form thickness about
For 10-30mm decarburized layer, the decarburized layer is loose, easily falls into molten steel or slag.The presence of decarburized layer, is on the one hand reduced
The thickness of magnesia carbon brick, shortens the service life of ladle；On the other hand, the decarburized layer fallen into molten steel is come off as impurity,
The composition of molten steel can be influenceed, and then reduces the quality of steel.
A kind of ladle magnesia carbon brick protection materials and its application process, the protection materials are provided in the A of CN 105000897
Form protection film on alumina-magnesia brick surface, the protection film room temperature within the temperature range of 500 DEG C because of the oxygen of carbon black in film
Change and reduce the oxygen in atmosphere and carbon dioxide and transmitted to magnesia carbon brick surface, the oxidation of carbon in magnesia carbon brick is greatly reduced.Reduction
The consumption of magnesia carbon brick, extends the service life of ladle, reduces production cost, and very easy to use.This method carbon black
Consumption it is very big, and the price of carbon black is higher, and the problem of cost is high is there is in use, unfavorable to be pushed away with industrialization
Extensively.
The content of the invention
In view of problems of the prior art, the invention provides a kind of ladle magnesia carbon brick protection materials and its preparation
Methods and applications, the material can prevent the carbon in magnesia carbon brick to be oxidized during ladle baking, suppress the formation of decarburized layer,
And then improve the service life of magnesia carbon brick.
In a first aspect, the invention provides a kind of ladle magnesia carbon brick protection materials, the material presses weight/mass percentage composition
Meter contains following components：
Each component of the present invention cooperates, with the rise of temperature, and it is glassy state that the protection materials, which gradually melt cohesion, tightly
The tight surface for sticking to alumina-magnesia brick, has completely cut off contact of the alumina-magnesia brick with air, and then effectively suppresses the formation of decarburized layer.The present invention
Add a small amount of carbon black, its can by with the preferential association reaction of oxygen, and then the protection materials can be prevented in complete glass
Carbon before change in oxygen and alumina-magnesia brick reacts and forms decarburized layer.
According to the present invention, based on weight/mass percentage composition, the ladle magnesia carbon brick is with kaolinic content in protection materials
25-40%, for example, can be specific between 25%, 27%, 30%, 32%, 35%, 37% or 40%, and above-mentioned numerical value
Point value, as space is limited and for concise consideration, the present invention no longer exclusive list.
According to the present invention, based on weight/mass percentage composition, the content of boron glass powder in the ladle magnesia carbon brick protection materials
For 20-30%, for example, can be 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29% or 30%,
And the specific point value between above-mentioned numerical value, as space is limited and for concise consideration, the present invention no longer exclusive list.
According to the present invention, based on weight/mass percentage composition, the content of titanium dioxide in the ladle magnesia carbon brick protection materials
For 10-20%, for example, can be 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20%,
And the specific point value between above-mentioned numerical value, as space is limited and for concise consideration, the present invention no longer exclusive list.
According to the present invention, based on weight/mass percentage composition, the ladle magnesia carbon brick is with the content of sodium metasilicate in protection materials
5-12%, for example, can be specific between 5%, 6%, 7%, 8%, 9%, 10%, 11% or 12%, and above-mentioned numerical value
Value, as space is limited and for concise consideration, the present invention no longer exclusive list.
According to the present invention, based on weight/mass percentage composition, the content of polyvinyl alcohol in the ladle magnesia carbon brick protection materials
For 2-10%, for example, it can be the tool between 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% or 10%, and above-mentioned numerical value
Body point value, as space is limited and for concise consideration, the present invention no longer exclusive list.
According to the present invention, based on weight/mass percentage composition, the ladle magnesia carbon brick is 2- with the content of carbon black in protection materials
5%, for example can be the specific point value between 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, and above-mentioned numerical value,
As space is limited and for concise consideration, the present invention no longer exclusive list.
Each component sum is 100% in ladle magnesia carbon brick protection materials of the present invention.
As preferred technical scheme, material of the present invention contains following components based on weight/mass percentage composition：
As preferred technical scheme, material of the present invention contains following components based on weight/mass percentage composition：
According to the present invention, the kaolinite soil granularity is less than 2 μm of content and accounts for 90-95%, for example can be 90%, 91%,
92%th, the specific point value between 93%, 94% or 95%, and above-mentioned numerical value, as space is limited and for concise consideration, this hair
Bright no longer exclusive list.
According to the present invention, the granularity of the titanium dioxide is 0.5-2 μm, for example, can be 0.5 μm, 0.8 μm, 1 μm, 1.2 μ
Specific point value between m, 1.5 μm, 1.8 μm or 2 μm, and above-mentioned numerical value, as space is limited and for concise consideration, the present invention
No longer exclusive list.
According to the present invention, granularity≤10 μm of the carbon black for example can be 0.1 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6
μm, 7 μm, 8 μm, 9 μm or 10 μm, and other are less than 10 μm specific point values, as space is limited and for concise consideration, this hair
Bright no longer exclusive list.
According to the present invention, the material is the solid-liquid mixed slurry of each raw material components and water.
Second aspect, the present invention provides a kind of preparation side of ladle magnesia carbon brick protection materials as described in relation to the first aspect
Method, methods described is：Mixer is added after each raw material components of formula ratio are mixed, by (3-5):1 liquid-solid ratio is to mixer
In add water, 10-15min is then stirred with 200-1500r/min speed, solid-liquid mixed slurry is obtained, i.e., described in ladle magnesium
Carbon brick protection materials.
Above-mentioned each raw material components are the concrete component of the ladle magnesia carbon brick protection materials described in first aspect, and prepare
Journey is carried out at room temperature.
According to the present invention, the liquid-solid ratio of water and the component in above-mentioned ladle magnesia carbon brick protection materials is (3-5):1, for example
Can be 3:1、3.5:1、4:1、4.5:1 or 5:Specific point value between 1, and above-mentioned numerical value, as space is limited and for simplicity
Consideration, the present invention no longer exclusive list.The unit of the liquid-solid ratio is ml/g.
The third aspect, the present invention provides a kind of application of ladle magnesia carbon brick protection materials as described in relation to the first aspect, institute
The operation for stating application is：The ladle magnesia carbon brick is coated in the surface of magnesia carbon brick with protection materials, after spontaneously drying or toasting,
Protective coating is formed on the surface of magnesia carbon brick.
According to the present invention, the thickness of the protective coating is 0.5-2mm, for example can be 0.5mm, 0.7mm, 1mm,
Specific point value between 1.2mm, 1.5mm, 1.8mm or 2mm, and above-mentioned numerical value, as space is limited and for concise consideration, sheet
Invention no longer exclusive list.
Compared with prior art, the present invention at least has the advantages that：
(1) present invention can prevent the carbon in magnesia carbon brick to be oxidized during ladle baking, suppress the generation of decarburized layer,
And then greatly improve the service life of magnesia carbon brick,
(2) the protection materials raw material obtained by the present invention is cheap and easy to get, and carbon black loading is few, reduces production cost, with good
Good economic benefit.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is only to aid in understanding the present invention, is not construed as the concrete restriction to the present invention.
The present invention provides a kind of ladle magnesia carbon brick protection materials in embodiment part, and the material presses quality
Percentage composition meter contains following components：
The present invention additionally provides a kind of preparation method of ladle magnesia carbon brick protection materials, institute in embodiment part
The method of stating is：Mixer is added after each raw material components of formula ratio are mixed, by (3-5):1 liquid-solid ratio adds into mixer
Water, then stirs 10-15min with 200-1500r/min speed, obtains the ladle magnesia carbon brick protection materials.
It is below the typical but non-limiting embodiment of this hair：
Each raw material is commercially available prod used in specific embodiment of the invention part, can directly be bought.
Embodiment 1
A kind of ladle magnesia carbon brick protection materials, contain following components based on weight/mass percentage composition：
Prepared in accordance with the following methods：
Mixer is added after each component of above-mentioned formula ratio is mixed, by 3:1 liquid-solid ratio adds water into mixer, then
10min is stirred with 1500r/min speed, solid-liquid mixed slurry, i.e. described ladle magnesia carbon brick protection materials is obtained.
Embodiment 2
A kind of ladle magnesia carbon brick protection materials, contain following components based on weight/mass percentage composition：
Prepared in accordance with the following methods：
Mixer is added after each component of above-mentioned formula ratio is mixed, by 5:1 liquid-solid ratio adds water into mixer, then
12min is stirred with 1200r/min speed, solid-liquid mixed slurry, i.e. described ladle magnesia carbon brick protection materials is obtained.
Embodiment 3
A kind of ladle magnesia carbon brick protection materials, contain following components based on weight/mass percentage composition：
Prepared in accordance with the following methods：
Mixer is added after each component of above-mentioned formula ratio is mixed, by 4:1 liquid-solid ratio adds water into mixer, then
15min is stirred with 500r/min speed, solid-liquid mixed slurry, i.e. described ladle magnesia carbon brick protection materials is obtained.
Embodiment 4
A kind of ladle magnesia carbon brick protection materials, contain following components based on weight/mass percentage composition：
Prepared in accordance with the following methods：
Mixer is added after each component of above-mentioned formula ratio is mixed, by 4:1 liquid-solid ratio adds water into mixer, then
15min is stirred with 1000r/min speed, solid-liquid mixed slurry, i.e. described ladle magnesia carbon brick protection materials is obtained.
Performance test：
Five pieces of same batches are taken to prepare, specification is identical, and the non-50mm of original thickness magnesia carbon brick, numbering is 1,2,3,4,5,
The mixed slurry obtained in embodiment 1-4 is coated in 1 respectively, the surface of 2,3, No. 4 bricks, coating layer thickness is 1.5mm, No. 5 bricks
Surface is not coated by, and is blank group.Above-mentioned magnesia carbon brick is spontaneously dried after 3h, is placed in Muffle furnace.By Muffle furnace with 5 DEG C/min's
Speed is warming up to 500 DEG C, is incubated 8h；Then 1200 DEG C are warming up to 10 DEG C/min speed, are incubated 4h.Insulation is opened after terminating
Fire door, naturally cools to room temperature, takes out 1-5 magnesia carbon bricks, by tapping, and the decarburized layer of specimen surface is removed completely, measures magnesium
The thickness of carbon brick residual, and compared with the magnesia carbon brick of processing, obtain the thickness of decarburized layer.Experimental result is as shown in table 1.
Table 1
Found by contrast, the magnesia carbon brick of ladle magnesia carbon brick protection materials prepared by the coating embodiment of the present invention, it takes off
The average thickness of carbon-coating is about 1.8mm, far below the magnesia carbon brick for not applying protection materials, illustrates the ladle magnesia carbon brick that the present invention is provided
It can effectively prevent the carbon in magnesia carbon brick to be oxidized during ladle baking with protection materials, reduce the thickness of decarburized layer,
And then improve the service life of magnesia carbon brick.
Applicant states that the present invention illustrates detailed process equipment and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed process equipment and technological process, that is, do not mean that the present invention has to rely on above-mentioned detailed
Process equipment and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
Addition, selection of concrete mode of equivalence replacement and auxiliary element to each raw material of product of the present invention etc., all fall within the present invention's
Within the scope of protection domain and disclosure.
Claims (10)
1. a kind of ladle magnesia carbon brick protection materials, it is characterised in that the material contains with the following group based on weight/mass percentage composition
Point：
2. ladle magnesia carbon brick protection materials as claimed in claim 1, it is characterised in that the material presses weight/mass percentage composition
Meter contains following components：
3. ladle magnesia carbon brick protection materials as claimed in claim 1, it is characterised in that the material presses weight/mass percentage composition
Meter contains following components：
4. the ladle magnesia carbon brick protection materials as described in claim any one of 1-3, it is characterised in that the kaolinite soil granularity
Content less than 2 μm accounts for 90-95%.
5. the ladle magnesia carbon brick protection materials as described in claim any one of 1-3, it is characterised in that the titanium dioxide
Granularity is 0.5-2 μm.
6. the ladle magnesia carbon brick protection materials as described in claim any one of 1-3, it is characterised in that the granularity of the carbon black
≤10μm。
7. the ladle magnesia carbon brick protection materials as described in claim any one of 1-3, it is characterised in that the material is each original
Expect the solid-liquid mixed slurry of component and water.
8. the preparation method of the ladle magnesia carbon brick protection materials as described in claim any one of 1-7, it is characterised in that described
Method is：Mixer is added after each raw material components of formula ratio are mixed, by (3-5):1 liquid-solid ratio adds water into mixer,
Then 10-15min is stirred with 200-1500r/min speed, obtains ladle magnesia carbon brick protection materials.
9. the application of the ladle magnesia carbon brick protection materials as described in claim any one of 1-7, it is characterised in that the application
Operation be：The ladle magnesia carbon brick is coated in the surface of magnesia carbon brick with protection materials, after spontaneously drying or toasting, in magnesium carbon
The surface of brick forms protective coating.
10. application as claimed in claim 9, it is characterised in that the thickness of the protective coating is 0.5-2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710537632.5A CN107311673B (en) | 2017-07-04 | 2017-07-04 | Protective material for ladle magnesia carbon brick and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710537632.5A CN107311673B (en) | 2017-07-04 | 2017-07-04 | Protective material for ladle magnesia carbon brick and preparation method and application thereof |
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| CN107311673B CN107311673B (en) | 2020-05-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07187757A (en) * | 1993-12-27 | 1995-07-25 | Mitsubishi Materials Corp | Fired refractory bricks of magnesia-chromia excellent in slag erosion resistance |
| CN101007920A (en) * | 2007-01-22 | 2007-08-01 | 陈东阜 | Inorganic corrosion-proof fire-resistant abrasive-proof nano cementing agent |
| CN105152665A (en) * | 2015-09-29 | 2015-12-16 | 攀枝花钢城集团有限公司 | Steel ladle antioxidant and preparation and use method thereof |
| CN106380075A (en) * | 2016-08-26 | 2017-02-08 | 浙江长兴强立耐火材料有限公司 | Coating for steel ladle magnesia carbon brick and application method thereof |
-
2017
- 2017-07-04 CN CN201710537632.5A patent/CN107311673B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07187757A (en) * | 1993-12-27 | 1995-07-25 | Mitsubishi Materials Corp | Fired refractory bricks of magnesia-chromia excellent in slag erosion resistance |
| CN101007920A (en) * | 2007-01-22 | 2007-08-01 | 陈东阜 | Inorganic corrosion-proof fire-resistant abrasive-proof nano cementing agent |
| CN105152665A (en) * | 2015-09-29 | 2015-12-16 | 攀枝花钢城集团有限公司 | Steel ladle antioxidant and preparation and use method thereof |
| CN106380075A (en) * | 2016-08-26 | 2017-02-08 | 浙江长兴强立耐火材料有限公司 | Coating for steel ladle magnesia carbon brick and application method thereof |
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| CN107311673B (en) | 2020-05-29 |
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