CN108911709A - A kind of mending material for converter - Google Patents
A kind of mending material for converter Download PDFInfo
- Publication number
- CN108911709A CN108911709A CN201811181394.XA CN201811181394A CN108911709A CN 108911709 A CN108911709 A CN 108911709A CN 201811181394 A CN201811181394 A CN 201811181394A CN 108911709 A CN108911709 A CN 108911709A
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- China
- Prior art keywords
- parts
- mending material
- converter
- mixed powder
- converter according
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- 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.)
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
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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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
- C04B2235/321—Dolomites, i.e. mixed calcium magnesium carbonates
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
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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)
- Ceramic Products (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to a kind of mending materials for converter, including following raw material：60-85 parts of mixed powder of dolomite and magnesite clinker, 10-20 parts of modified pitch, 2-5 parts of additive, 6-10 parts of wetting agent, the proportion of dolomite and magnesite clinker is 1 in the mixed powder：(1-2).Advantage is：In addition to good self drainage, hot strength, corrosion resistance and thermal shock, firm time is short, to reduce converter blowing out maintenance time, its operating efficiency is improved, while mending material and converter working lining bonding are good, to prevent it from peeling off in use.
Description
Technical field
The invention belongs to fire resisting material field more particularly to a kind of mending materials for converter.
Background technique
With increasing substantially for converter smelting intensity and rhythm of production, to the quality requirement of maintenance coverter pig mending material
It is increasingly harsher, at present to furnace lining safeguard used in mending material mainly using magnesia as major ingredient, pitch etc. is bonding agent, when fettling
Mending material is added in funnel investment furnace and be used, the mending material often occur collapsing material, stirring, mends not Shang or corrodes the exception such as fastly and damage
Situation is ruined, also causes the safety accidents such as splash sometimes, seriously affects the normal production of converter.It is novel to be thus badly in need of a kind of coverter pig
Mending material improves maintaining converter status.
Summary of the invention
In order to overcome the deficiencies of the prior art, that the object of the present invention is to provide a kind of is good with furnace lining magnesia carbon brick caking property, resists and invades
Corrosion is good, the material that do not collapse (or seldom collapse material), sintering time are shorter, the stronger mending material for converter of hydration resistance.
To achieve the above object, the invention is realized by the following technical scheme：
A kind of mending material for converter, including following raw material：
60-85 parts of mixed powder of dolomite and magnesite clinker, 10-20 parts of modified pitch, 2-5 parts of additive, wetting agent 6-
10 parts, the proportion of dolomite and magnesite clinker is 1 in the mixed powder：(1-2).
Content of MgO >=70% in the mixed powder, CaO content >=20%, SiO2Content<4%.
The grain composition of the mixed powder is：3mm≤granularity < 8mm is 20-30 parts；1mm≤granularity < 3mm is 20-
30 parts；Granularity < 1mm is 10-20 parts；10-15 parts of fine powder, granularity is less than 0.088mm.
110 DEG C of the softening point of the modified pitch, residual C >=46.
The additive is SiC or one or more kinds of mixtures of explosion-proof fiber.
The wetting agent is one or more kinds of mixtures of kerosene, diesel oil or used oil.
The modified pitch is made of mixing by modifying agent and mid temperature pitch, and mid temperature pitch is by weight percentage
0.5%-1%, the modifying agent are alkylbenzene sulfonate, and the zwitterion ratio of alkylbenzene sulfonate is 5：1.
Compared with prior art, the beneficial effects of the invention are as follows：
Mending material for converter is in addition to good self drainage, hot strength, corrosion resistance and thermal shock, firm time
It is short, to reduce converter blowing out maintenance time, its operating efficiency is improved, while mending material and converter working lining bonding are good, to prevent
Only it is peeled off in use.The hydration resistance and anti-erosion of product can be improved using compound conite material
Property.The clinker that converter smelting early period is formed is with SiO2Based on acid slag, it is high that the CaO in product reacts generation with clinker first
Fusing point C2S and C3S makes product working face form a high viscosity protective layer, improves product life, i.e. it is good to assign product for dolomite
The ability of good resistance scouring early period；The later period is being smelted, clinker is changed into the basic slag containing a large amount of FeO, because of MgO in product
Continuous solid solution and Fe can be formed with FeO2O3Limit solid solution is formed, therefore the erosion of ferriferous oxide can be resisted, i.e., magnesia is assigned
Give the very high ability for resisting later period scouring of product.As it can be seen that both advantages can be integrated using composite, make product is anti-to invade
Corrosion can greatly improve.Using modified pitch bonding agent, can overcome using existing for single mid temperature pitch bonding agent it is many not
Foot improves bonding agent quality comprehensively.It is mainly manifested in and improves bonding agent softening point, residual C content and toluene insolubles content, reduce
Its volatile matter content etc. makes the adhesion strength of mending material and magnesia carbon brick, expects that bond strength itself and corrosion resistance greatly improve,
And sintering time can be shortened.
Specific embodiment
The present invention is described in detail below, it should be noted that implementation of the invention embodiment party not limited to the following
Formula.
For the mending material of converter, including following raw material：
60-85 parts of mixed powder of dolomite and magnesite clinker, 10-20 parts of modified pitch, 2-5 parts of additive, wetting agent 6-
10 parts, the proportion of dolomite and magnesite clinker is 1 in the mixed powder：(1-2), preferably 1：2.By mixed powder, modified pitch,
Additive, wetting agent stirring at normal temperature are uniform, that is, can be made into mending material.
Content of MgO >=70% in mixed powder, CaO content >=20%, SiO2Content<4%.The grain composition of mixed powder is：
3mm≤granularity < 8mm is 20-30 parts；1mm≤granularity < 3mm is 20-30 parts；Granularity < 1mm is 10-20 parts；Fine powder 10-15
Part, granularity is less than 0.088mm.Additive is SiC or one or more kinds of mixtures of explosion-proof fiber.Wetting agent is coal
One or more kinds of mixtures of oil, diesel oil or used oil.110 DEG C of the softening point of modified pitch, residual C >=46, modified drip
Blueness is to be kneaded to obtain in 0.5%-1% ratio using alkylbenzene sulfonate as modifying agent and mid temperature pitch, alkylbenzene sulfonate
It is 5：1 cationic and anionic surfactant.
Embodiment：
The present invention is to use compound conite material that the hydration resistance and corrosion resistance of product can be improved.Using
Modified pitch bonding agent can overcome using many deficiencies existing for single mid temperature pitch bonding agent, improve bonding agent product comprehensively
Matter.The present invention is that coverter pig mending material proposes a kind of new approach, for energy-saving, environmental protection, increases economic benefit
There is important meaning.After certain steel mill's use, up to 30 heats, the present invention is that coverter pig mending material proposes one kind newly for average life span
Approach, for energy-saving, environmental protection, increase economic benefit have important meaning.
Claims (7)
1. a kind of mending material for converter, which is characterized in that including following raw material：
60-85 parts of mixed powder of dolomite and magnesite clinker, 10-20 parts of modified pitch, 2-5 parts of additive, 6-10 parts of wetting agent,
The proportion of dolomite and magnesite clinker is 1 in the mixed powder：(1-2).
2. a kind of mending material for converter according to claim 1, which is characterized in that MgO contains in the mixed powder
Amount >=70%, CaO content >=20%, SiO2Content<4%.
3. a kind of mending material for converter according to claim 1, which is characterized in that the granular-grade of the mixed powder
With being：3mm≤granularity < 8mm is 20-30 parts；1mm≤granularity < 3mm is 20-30 parts；Granularity < 1mm is 10-20 parts；Fine powder
10-15 parts, granularity is less than 0.088mm.
4. a kind of mending material for converter according to claim 1, which is characterized in that the softening of the modified pitch
Point 110 DEG C, residual C >=46.
5. a kind of mending material for converter according to claim 1, which is characterized in that the additive be SiC or
One or more kinds of mixtures of explosion-proof fiber.
6. a kind of mending material for converter according to claim 1, which is characterized in that the wetting agent be kerosene,
One or more kinds of mixtures of diesel oil or used oil.
7. a kind of mending material for converter according to claim 1, which is characterized in that the modified pitch is by being modified
Agent is made of mixing with mid temperature pitch, and mid temperature pitch is 0.5%-1% by weight percentage, and the modifying agent is benzene sulfonamide
Hydrochlorate, the zwitterion ratio of alkylbenzene sulfonate are 5：1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181394.XA CN108911709A (en) | 2018-10-11 | 2018-10-11 | A kind of mending material for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181394.XA CN108911709A (en) | 2018-10-11 | 2018-10-11 | A kind of mending material for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108911709A true CN108911709A (en) | 2018-11-30 |
Family
ID=64407936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811181394.XA Withdrawn CN108911709A (en) | 2018-10-11 | 2018-10-11 | A kind of mending material for converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108911709A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642604A (en) * | 2019-11-07 | 2020-01-03 | 湖北安耐捷炉衬材料有限公司 | Ladle slag-proof coating material for casting and preparation method thereof |
| CN111439991A (en) * | 2020-04-23 | 2020-07-24 | 北京利尔高温材料股份有限公司 | Novel repairing mass for converter, preparation method and construction method |
| 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 |
-
2018
- 2018-10-11 CN CN201811181394.XA patent/CN108911709A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642604A (en) * | 2019-11-07 | 2020-01-03 | 湖北安耐捷炉衬材料有限公司 | Ladle slag-proof coating material for casting and preparation method thereof |
| CN111439991A (en) * | 2020-04-23 | 2020-07-24 | 北京利尔高温材料股份有限公司 | Novel repairing mass for converter, preparation method and construction method |
| CN111439991B (en) * | 2020-04-23 | 2022-07-12 | 北京利尔高温材料股份有限公司 | Repairing mass for converter, preparation method and construction method |
| 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 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181130 |