CN106977183A - The magnesia soldering material of high temperature kiln hot repair - Google Patents
The magnesia soldering material of high temperature kiln hot repair Download PDFInfo
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- CN106977183A CN106977183A CN201710302774.3A CN201710302774A CN106977183A CN 106977183 A CN106977183 A CN 106977183A CN 201710302774 A CN201710302774 A CN 201710302774A CN 106977183 A CN106977183 A CN 106977183A
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- magnesia
- kiln
- soldering material
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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
- C04B35/01—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
- C04B2235/34—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
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3445—Magnesium silicates, e.g. forsterite
-
- 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
- C04B2235/428—Silicon
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
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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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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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)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The present invention discloses a kind of magnesia soldering material of high temperature kiln hot repair, is related to fire resisting material field, includes the MgO and the SiO of 15~35% mass percents of 65~85% mass percents2, the MgO comes from two kinds of raw materials of magnesia and synthetic forsterite, the SiO2Come from two kinds of raw materials of metallic silicon power and synthetic forsterite.At high operating temperatures, containing the higher refractory material of magnesia in this soldering material and kiln, there is fabulous compatibility such as magnesia or magnesian-chrome efractoy, good adhesion and can persistently be present in above-mentioned refractory surface, play a part of repairing kiln lining defect, extend life-span of kiln liner.For example, magnesia soldering material of the present invention is in the hot lower local soldering of regenerator chamber of glass kiln wall progress being used for damage, both the hot repair effect of regenerator had greatly improved, the risk and cost of hot repair are significantly reduced again, significantly extension glass melter service life is achieved, high yield, high-quality, low consumption, environment-friendly and long-term safety target effect has been reached.
Description
Technical field
The present invention relates to fire resisting material field, more particularly to a kind of magnesia soldering material of high temperature kiln hot repair.
Background technology
In recent years, China's glass, the progress of nonferrous industry refractory technology and kiln technological level are lifted quickly.For example,
The operation of glass furnace is received a mandate and stepped up 6-8 by 5 years.But due to fuel price lifting, glass industry, which begins to use, to be contained
The higher alternative fuel of sulphur is burnt, and the erosion for regenerator wall magnesia refractories aggravates, and influences it normally to make
With performance, cause the regenerator lost of life, or even be forced hot repair or in advance cold repair, cause damage.Solve the optimal of problem above
Scheme is exactly not stopped the hot lower local soldering of progress of kiln for regenerator wall.For using magnesia, magnesium chromium matter fire proofed wood
The coloured kiln of material, similarly needs to carry out hot patching.
Although being used in the soldering material comparative maturity of the big arch of glass melter or regenerator crown, the soldering material is with titanium dioxide
Silicon is the siliceous soldering material of principal component, and this material can be used for repairing siliceous kiln lining but should not be used in the alkaline kiln lining of repairing.Such as
Fruit repairs alkaline (i.e. magnesia or magnesium chromium matter) kiln lining with siliceous material for repairing.Under hot, the silica in material for repairing can be with block
The magnesia refractories reaction in regenerator wall is built, wall is suffered erosion, so as to can not only reach repair efficiency, on the contrary
Shorten life-span of kiln liner.
Existing patent of invention (CN103951447A) discloses a kind of MgO-MgOAl2O3It is high-temperature ceramic soldering material and its makes
Use method；Existing patent of invention (CN104788103A) discloses a kind of industrial furnace repairing magnesia porcelain soldering material and repairing
Method, technical characteristics are combined in hot lower formation magnesium aluminate spinel, although have good bond strength initial stage, but should
Plant material and contain substantial amounts of Al2O3, for SiO2To contain a large amount of iron in the glass melter regenerator or clinker of main corrosive substance
Olivine 2FeOSiO2Coloured kiln, can form low melting point, shorten life-span of kiln liner, what magnesia porcelain soldering material was present
Problem cannot be solved for a long time.
The content of the invention
Present invention aims to overcome that there is provided a kind of magnesia soldering material of high temperature kiln hot repair for deficiency of the prior art.
The present invention is achieved by the following technical solutions：MgO and 15 including 65~85% mass percents~
The SiO of 35% mass percent2, the MgO comes from two kinds of raw materials of magnesia and synthetic forsterite, the SiO2Come from gold
Belong to two kinds of raw materials of silica flour and synthetic forsterite.
The magnesia mass percent is 60~80%, and the synthetic forsterite mass percent is 10~35%, institute
It is 5~10% to state metallic silicon power mass percent, magnesia content of MgO >=95%, the synthetic forsterite content of MgO >=
60%th, SiO2Content >=30%, metallic silicon power Si content >=99.0%.
Granularity≤1mm of the magnesia；Granularity≤1mm of the synthetic forsterite；The granularity of the metallic silicon power≤
0.425mm。
Preferably, the magnesia mass percent is 60%, and the synthetic forsterite mass percent is 35%, described
Metallic silicon power mass percent is 5%.
Preferably, the magnesia mass percent is 65%, and the synthetic forsterite mass percent is 26%, described
Metallic silicon power mass percent is 9%.
Preferably, the magnesia mass percent is 70%, and the synthetic forsterite mass percent is 23%, described
Metallic silicon power mass percent is 7%.
Preferably, the magnesia mass percent is 80%, and the synthetic forsterite mass percent is 10%, described
Metallic silicon power mass percent is 10%.
The preparation method of the magnesia soldering material of high temperature kiln hot repair, the raw material of the mass percent is mixed equal
It is even, both the magnesia soldering material of high temperature kiln hot repair.
The beneficial effects of the present invention are：
1st, this kind of material and magnesia refractories have more preferable compatibility at high operating temperatures, it is adaptable to regenerator wall heat
Local soldering under state.
2nd, first, above-mentioned soldering material is sent into after high temperature kiln with oxygen, silica flour ignition, flame has not only melted thing
Forsterite in material, and magnesia in material has been melted in part, and further increase the temperature of refractory surface,
Just soldering material is made to stick on kiln lining surface.
3rd, secondly, the temperature at soldering is gradually reduced, and soldering material changes into solid-state and is welded into one with kiln lining.
4th, then, magnesia aoxidizes the silicon dioxde reaction produced formation forsterite with silica flour, improves the height of soldering layer
Warm intensity.Because soldering layer with original basic refractory has an excellent compatibility, soldering layer just can long-term existence in fire proofed wood
Expect surface, play a part of extending refractory life.
5th, due to realize it is viscous must go up, stay, the target that use must be grown, with magnesia soldering material of the present invention under hot
Soldering is carried out, regenerator hot repair risk and expense had both been reduced, the effect of hot repair is improved again, and solved magnesia porcelain soldering material
The problem of existing for a long time in use, has reached extension regenerator service life, has met glass melter high yield, high-quality, low consumption, environment
The target that friendly and long-term safety is operated, achieves significant economic benefit.
Embodiment：
In order to be more clearly understood that the technology of the present invention content, described in detail especially exemplified by embodiment once.The following example
The middle material composition used is commercially available magnesia：MgO >=95%；Commercially available synthetic forsterite：MgO >=60%, SiO2>=30%；City
Sell metallic silicon power：Si >=99%.Granularity≤1mm of the magnesia；Granularity≤1mm of the synthetic forsterite；The metal
Granularity≤0.425mm of silica flour.Detect that accepted standard is：Strength at normal temperature uses GB/T3001-2007, the resistance to pressure of normal temperature
Degree uses GB/T5072-2008, and refractoriness uses GB/T7322-2007
Embodiment 1
Magnesia 60Kg, synthetic forsterite 35Kg, metallic silicon power 5Kg are weighed, three kinds of raw materials are inserted in sealing mixer,
After stirring 20 minutes, load welding repair machine, hot kiln wall breakage, magnesia soldering material are delivered to by welding gun by oxygen current-carrying
Occur oxidation reaction in breakage and produce high temperature, soldering material is adhered in semi-molten state on kiln lining, subsequent magnesia soldering material
It is connected as a single entity with magnesia refractories wall, produces strong bonded, has been reached hot for the progress of breakage magnesia refractories
Repair purpose.24 hours after the completion of repairing, gained testing result, which is, to be detected to sampling at soldering：Bonding part rupture strength
8.05MPa；Compressive resistance 45.17MPa, 1798 DEG C of refractoriness.
From the above it can be seen that welding effect is good, the imagination of research and development is realized：At high temperature, oxidation reaction occurs for metallic silicon power
The SiO of generation2Generation high-melting-point forsterite is further reacted with MgO, the tissue of forsterite combination periclase is ultimately formed
Structure, makes soldering material be adhered firmly to former refractory material kiln lining.In this way, not only improving invading for high silicon dioxide content kiln material
Erosion, ensures the high-temperature behavior of soldering material again, while having excellent compatibility with regenerator magnesia refractories kiln lining wall, is formed
Strong bonded, reaches effectively protection regenerator wall, extends the effect in regenerator life-span.
Embodiment 2
Magnesia 65Kg, synthetic forsterite 26Kg, metallic silicon power 9Kg are weighed, three kinds of raw materials are inserted in sealing mixer,
After stirring 20 minutes, load welding repair machine, hot kiln wall breakage, magnesia soldering material are delivered to by welding gun by oxygen current-carrying
Occur oxidation reaction in breakage and produce high temperature, soldering material is adhered in semi-molten state on kiln lining, subsequent magnesia soldering material
It is connected as a single entity with magnesia refractories wall, produces strong bonded, has been reached hot for the progress of breakage magnesia refractories
Repair purpose.24 hours after the completion of repairing, gained testing result, which is, to be detected to sampling at soldering：Bonding part rupture strength
8.01MPa；Compressive resistance 45.19MPa；1802 DEG C of refractoriness.
From the above it can be seen that welding effect is good, the imagination of research and development is realized：At high temperature, oxidation reaction occurs for metallic silicon power
The SiO of generation2Generation high-melting-point forsterite is further reacted with MgO, the tissue of forsterite combination periclase is ultimately formed
Structure, makes soldering material be adhered firmly to former refractory material kiln lining.In this way, not only improving invading for high silicon dioxide content kiln material
Erosion, ensures the high-temperature behavior of soldering material again, while having excellent compatibility with regenerator magnesia refractories kiln lining wall, is formed
Strong bonded, reaches effectively protection regenerator wall, extends the effect in regenerator life-span.
Embodiment 3
Magnesia 70Kg, synthetic forsterite 23Kg, metallic silicon power 7Kg are weighed, three kinds of raw materials are inserted in sealing mixer,
After stirring 20 minutes, load welding repair machine, hot kiln wall breakage, magnesia soldering material are delivered to by welding gun by oxygen current-carrying
Occur oxidation reaction in breakage and produce high temperature, soldering material is adhered in semi-molten state on kiln lining, subsequent magnesia soldering material
It is connected as a single entity with magnesia refractories wall, produces strong bonded, has been reached hot for the progress of breakage magnesia refractories
Repair purpose.24 hours after the completion of repairing, gained testing result, which is, to be detected to sampling at soldering：Bonding part rupture strength
7.93MPa；Compressive resistance 45.25MPa；1810 DEG C of refractoriness.
From the above it can be seen that welding effect is good, the imagination of research and development is realized：At high temperature, oxidation reaction occurs for metallic silicon power
The SiO of generation2Generation high-melting-point forsterite is further reacted with MgO, the tissue of forsterite combination periclase is ultimately formed
Structure, makes soldering material be adhered firmly to former refractory material kiln lining.In this way, not only improving invading for high silicon dioxide content kiln material
Erosion, ensures the high-temperature behavior of soldering material again, while having excellent compatibility with regenerator magnesia refractories wall, forms firm
With reference to so as to reach effectively protection regenerator wall, the effect in extension regenerator life-span.
Embodiment 4
Magnesia 80Kg, synthetic forsterite 10Kg, metallic silicon power 10Kg are weighed, three kinds of raw materials are inserted into sealing mixer
It is interior, after stirring 20 minutes, load welding repair machine, hot kiln wall breakage, magnesia weldering are delivered to by welding gun by oxygen current-carrying
Feed supplement occurs oxidation reaction in breakage and produces high temperature, soldering material is adhered in semi-molten state on kiln lining, subsequent magnesia weldering
Feed supplement is connected as a single entity with magnesia refractories wall, produces strong bonded, has reached and has been carried out for breakage magnesia refractories
Hot patching purpose.24 hours after the completion of repairing, gained testing result, which is, to be detected to sampling at soldering：The anti-folding in bonding part
Intensity 7.82MPa；Compressive resistance 45.55MPa；1823 DEG C of refractoriness.
From the above it can be seen that welding effect is good, the imagination of research and development is realized：At high temperature, oxidation reaction occurs for metallic silicon power
The SiO of generation2Generation high-melting-point forsterite is further reacted with MgO, the tissue of forsterite combination periclase is ultimately formed
Structure, makes soldering material be adhered firmly to former refractory material kiln lining.In this way, not only improving invading for high silicon dioxide content kiln material
Erosion, ensures the high-temperature behavior of soldering material again, while having excellent compatibility with regenerator magnesia refractories kiln lining wall, is formed
Strong bonded, reaches effectively protection regenerator wall, extends the effect in regenerator life-span.
In summary, high temperature kiln hot repair of the invention more adapts to glass with magnesia soldering material than existing welding repair material
Melting furnaces regenerator working condition demand, in addition to it can adhere to very well on basic refractory kiln lining, both resistance to glass melter stored
The siliceous flying dust in hot cell or nonferrous industry fayalite slag action are washed away, and have preferably compatible with basic refractory liner body
Property, the problem of existing for a long time in magnesia porcelain soldering material use is solved, hot patching efficiency and quality can be improved, effectively prolonged
The running life of long kiln, have broad application prospects.
Claims (7)
1. a kind of magnesia soldering material of high temperature kiln hot repair, it is characterised in that：MgO including 65~85% mass percents and
The SiO of 15~35% mass percents2, the MgO comes from two kinds of raw materials of magnesia and synthetic forsterite, the SiO2Come from
In two kinds of raw materials of metallic silicon power and synthetic forsterite.
2. the magnesia soldering material of high temperature kiln hot repair according to claim 1, it is characterised in that：The magnesia mass percent
For 60~80%, the synthetic forsterite mass percent is 10~35%, the metallic silicon power mass percent is 5~
10%, magnesia content of MgO >=95%, synthetic forsterite content of MgO >=60%, SiO2Content >=30%, it is described
Metallic silicon power Si content >=99.0%.
3. the magnesia soldering material of high temperature kiln hot repair according to claim 2, it is characterised in that：The granularity of the magnesia≤
1mm；Granularity≤1mm of the synthetic forsterite；Granularity≤0.425mm of the metallic silicon power.
4. the magnesia soldering material of high temperature kiln hot repair according to claim 2, it is characterised in that：The magnesia mass percent
For 60%, the synthetic forsterite mass percent is 35%, and the metallic silicon power mass percent is 5%.
5. the magnesia soldering material of high temperature kiln hot repair according to claim 2, it is characterised in that：The magnesia mass percent
For 70%, the synthetic forsterite mass percent is 23%, and the metallic silicon power mass percent is 7%.
6. the magnesia soldering material of high temperature kiln hot repair according to claim 2, it is characterised in that：The magnesia mass percent
For 80%, the synthetic forsterite mass percent is 10%, and the metallic silicon power mass percent is 10%.
7. according to the preparation method of any one of the claim 1-6 magnesia soldering materials of high temperature kiln hot repair, it is characterised in that：
The raw material of the mass percent is mixed evenly, both the magnesia soldering material of high temperature kiln hot repair.
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| CN201710302774.3A CN106977183A (en) | 2017-05-03 | 2017-05-03 | The magnesia soldering material of high temperature kiln hot repair |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317046A (en) * | 2019-07-11 | 2019-10-11 | 武汉重远炉窑工程技术服务有限公司 | A kind of magnesia high-temperature ceramic soldering material |
| CN113845364A (en) * | 2021-11-05 | 2021-12-28 | 瑞泰科技股份有限公司 | Periclase-forsterite high-temperature spray coating |
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| CN102086128A (en) * | 2010-12-10 | 2011-06-08 | 山西高科耐火材料股份有限公司 | Ceramic welding materials for high temperature kiln and a method |
| CN102140035A (en) * | 2011-05-04 | 2011-08-03 | 上海杰汇炉窑新技术有限公司 | Magnesium-chromium high-temperature ceramic soldering material and preparation method thereof |
| CN102249706A (en) * | 2011-05-04 | 2011-11-23 | 上海杰汇炉窑新技术有限公司 | Application method of high-temperature ceramic soldering material in the nature of magnesium and chromium |
| CN103951447A (en) * | 2014-04-21 | 2014-07-30 | 上海杰汇炉窑新技术有限公司 | MgO-MgO.Al2O3 high-temperature ceramic filler material and application method thereof |
| CN104788103A (en) * | 2014-01-21 | 2015-07-22 | 上海宝冶建设工业炉工程技术有限公司 | Magnesia ceramic welding material for industrial kiln and furnace repairing, and repairing method thereof |
-
2017
- 2017-05-03 CN CN201710302774.3A patent/CN106977183A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086128A (en) * | 2010-12-10 | 2011-06-08 | 山西高科耐火材料股份有限公司 | Ceramic welding materials for high temperature kiln and a method |
| CN102140035A (en) * | 2011-05-04 | 2011-08-03 | 上海杰汇炉窑新技术有限公司 | Magnesium-chromium high-temperature ceramic soldering material and preparation method thereof |
| CN102249706A (en) * | 2011-05-04 | 2011-11-23 | 上海杰汇炉窑新技术有限公司 | Application method of high-temperature ceramic soldering material in the nature of magnesium and chromium |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317046A (en) * | 2019-07-11 | 2019-10-11 | 武汉重远炉窑工程技术服务有限公司 | A kind of magnesia high-temperature ceramic soldering material |
| CN110317046B (en) * | 2019-07-11 | 2021-12-24 | 武汉重远炉窑工程技术服务有限公司 | Magnesia high-temperature ceramic welding material |
| CN113845364A (en) * | 2021-11-05 | 2021-12-28 | 瑞泰科技股份有限公司 | Periclase-forsterite high-temperature spray coating |
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