CN106348769A - Silicon carbide buffer mud for blast furnace buffer seams - Google Patents
Silicon carbide buffer mud for blast furnace buffer seams Download PDFInfo
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- CN106348769A CN106348769A CN201610742340.0A CN201610742340A CN106348769A CN 106348769 A CN106348769 A CN 106348769A CN 201610742340 A CN201610742340 A CN 201610742340A CN 106348769 A CN106348769 A CN 106348769A
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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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- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- 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
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- 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
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- 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
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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
- C04B2235/50—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
- C04B2235/528—Spheres
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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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Abstract
The invention belongs to the field of refractory materials, and particularly relates to silicon carbide buffer mud for blast furnace buffer seams. The silicon carbide buffer mud comprises, by weight, 10-40 parts of silicon carbide, 0-7 parts of alumina micro powder, 1-10 parts of refractory clay, 5-30 parts of refractory fiber balls and 1-5 parts of active silica micropowder. The buffer mud has the advantages of high hot compression ratio and good construction performance, convenience in field use is achieved, technical guarantee is provided for expansion seams of a refractory brickwork, completeness and leakproofness can be effectively sustained, and serve life of a blast furnace lining is effectively prolonged.
Description
Technical field
The invention belongs to fire resisting material field is and in particular to a kind of silicon carbide for blast furnace buffering seam buffers mud.
Background technology
For a long time, staying of refractory expansion seam sets, and annoyings furnace design worker and construction work personnel always,
Trace it to its cause: the refractory lining that Inorganic Non-metallic Materials are made, the cooling wall made with metal material, air port, because of its material not
Same, lead to its expanded by heating rate different.In order to offset dilation amount in the case of expanding with heat and contract with cold for the bi-material, keep body of heater
The stability of structure and globality.Therefore it is also easy to produce breathing space in body of heater air port, cooling wall eave tile etc. and tuyere combined brick, furnace lining
Domain, filling counteracting is expanded with heat and contract with cold and is buffered mud with fire resisting.Fire resisting buffering mud has certain compressibility under high-temperature load, thus
The thermal expansion stress of masonry can be alleviated, thus keeping globality and the sealing of masonry；Build temperature reduction simultaneously and produce receipts
During contracting, also there is certain resilience force, decrease between masonry because non-homogeneous expansion produces ventilative phenomenon.But in actual applications, because
Expansion is tight or brick body stress is excessive, and the example of impact kiln service life is a lot.
Content of the invention
The present invention is directed to the deficiencies in the prior art it is therefore intended that providing a kind of carborundum for blast furnace buffering seam
Matter buffers mud.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of for blast furnace buffering seam silicon carbide buffering mud, including carborundum, alumina powder, fire clay,
Refractory fibre ball and active silica fume, each component is calculated by weight as: 10～40 parts of carborundum, alumina powder 0
～7 parts, 1～10 part of fire clay, 5～30 parts of refractory fibre ball, 1～5 part of active silica fume.
In such scheme, described refractory fibre ball is the loose type fibrous nodules being formed by the polymerization of the electrostatic method of forming, its diameter
For 3～8mm.
In such scheme, described silicon carbide buffering mud also includes compound additive, and described compound additive is by dextrin
With carboxymethyl cellulose composition.
In such scheme, each component of described compound additive is calculated by weight as: 0.5～5 part of dextrin, and carboxymethyl is fine
0.1～5 part of dimension element.
In such scheme, described silicon carbide buffering mud also includes combined binder, and described combined binder is by thermosetting
Resin, ethylene glycol and ethanol composition.
In such scheme, the addition of described combined binder is 10～50 weight portions.
In such scheme, each component of described combined binder is calculated by weight as: 1～10 part of thermosetting resin, second two
5～30 parts of alcohol, 5～20 parts of ethanol.
Above-mentioned silicon carbide buffers the preparation method of mud, after comprising the steps: each component is weighed by weight, stirs
Mix mix homogeneously, that is, obtain described silicon carbide buffering mud.By described silicon carbide buffering mud powder part using compound
Woven bag is packed, and liquid binder part using being packed with Plastic Drum, is transported powder part and bonding agent portion to job site
Divide and put into forced mixer stirring 3min according to a certain percentage, can come into operation after stirring.
Refractory fibre ball is introduced silicon carbide buffering mud by the present invention, and refractory fibre ball has excellent compressibility and answers
Originality, described refractory fibre ball is formed by electrostatical binding for loose type, and refractory fibre bulb diameter, in the range of 3～8mm, is not mark
Accurate is spherical, and the fiber decentralization that refractory fibre set of balls becomes is especially good, is condensed together by the electrostatic method of forming.In use,
Refractory fibre ball in buffering mud becomes more open, but also maintains polymerization state, empty in refractory fibre ball at this moment
Pore oneself be filled with moisture and slurry fluid, can be in suspended state, refractory fibre ball is uniformly dispersed, not exist subregional poly-
Collection or one-tenth agglomerate are cotton-shaped, it may therefore be assured that the entirety of buffering mud is homogeneous.The present invention passes through to control the dispersion of refractory fibre ball
Degree, the addition of adjustment refractory fibre ball, and then adjust the size of the hot compression rate of buffering mud, therefore can be according to client's
Different require to make corresponding adjustment it is ensured that the globality of refractory masonry and sealing.
Silicon powder is also introduced silicon carbide buffering mud by the present invention, and in general, powder body is mainly used in castable
In system, introducing micropowder concept in refractory wass system does not almost have, and demonstrates in the present invention and introduces in refractory wass
The reasonability of micropowder, its mechanism is mainly: active silica fume has great surface activity, and after its aquation, surface is formed
The si-oh key of similar silica gel structure, at 40 DEG C about, si-oh key starts to be dehydrated, and aggregates into si-o-si key, and composition is firm
Micropowder long-chain, when 80 DEG C, this polymerization is the most violent, and tends to completing, and this long chain formation network structure is always maintained at
Also unchanged when 250 DEG C, and crystalline state sio2Then no this network is formed micropowder.Exactly because this network structure is lived so that containing
Property fine silica powder silicon carbide buffering mud there is high withstand voltage intensity.Simultaneously as the presence of alumina powder, this kind of
The typically anhydrous reaction of fine powder, at low temperature, these fine powders are attached in the network structure that active silica fume is formed, tool
There is higher low temperature intensity；After 700 DEG C, in the range of chain, alumina powder and active silica fume react formation chemical combination
Thing, at a temperature of 800～1000 DEG C, forms acicular mullite crystal, this acicular mullite crystal is double with former lattice chain
Recast is used, and makes silicon carbide buffer mud and has intensity after excellent high temperature burns.
Beneficial effects of the present invention: hot compression rate is the important indicator that examination silicon carbide buffers mud property, its table
Levy the ability absorbing refractory masonry thermal expansion stress, buffering mud of the present invention has hot compression rate height, workability
Good advantage, and onsite application is convenient, is staying to set and providing technical guarantee, using this of refractory masonry dilatation joint
Bright described buffering mud can effectively keep globality and the sealing of masonry, thus effectively extending blast furnace lining service life.
Specific embodiment
For a better understanding of the present invention, it is further elucidated with present disclosure with reference to embodiment, but the present invention
Content is not limited solely to the following examples.
Embodiment 1～3
Each component proportion that silicon carbide described in embodiment 1～3 buffers mud is shown in Table 1.
The each component proportion of table 1
In table 1, in embodiment 1, described compound additive is: dextrin 1.5 weight portion, carboxymethyl cellulose 0.5 weight portion,
Described combined binder is: 4 parts of thermosetting resin, 23 parts of ethylene glycol, 13 parts of ethanol；In embodiment 2, institute's compound additive is: paste
Smart 1 weight portion, carboxymethyl cellulose 0.5 weight portion, described combined binder is: 5 parts of thermosetting resin, 25 parts of ethylene glycol, ethanol
15 parts；In embodiment 3, described compound additive is: dextrin 0.6 weight portion, carboxymethyl cellulose 0.4 weight portion, described compound
Bonding agent is: 6 parts of thermosetting resin, 27 parts of ethylene glycol, 15 parts of ethanol.
After each component is weighed by weight, it is uniformly mixed, that is, obtain described silicon carbide buffering mud.Will be described
Silicon carbide buffering mud is packed with Plastic Drum, transports and can directly use to job site.Carborundum described in embodiment 1～3
The performance test results that matter buffers mud are shown in Table 2.
Table 2 silicon carbide buffers the performance test results of mud
Further, the present invention passes through to adjust the addition of refractory fibre ball, and then adjusts silicon carbide buffering mud heat
State compression ratio.Only change the addition of refractory fibre ball, other each component proportions are same as Example 2, and contrast and experiment is such as
Shown in table 3.
The different impact to hot compression rate of table 3 refractory fibre ball addition
Further, the present invention passes through to change the addition of active silica fume, and then changes cold crushing strength,
Only change the addition of active silica fume, other each component proportions are constant same as Example 2, and contrast and experiment is such as
Shown in table 4.
The different impact to cold crushing strength of the addition of table 4 active silica fume
From table 3, table 4 it can be seen that by adjusting the addition of refractory fibre ball, and then the heat of buffering mud can be adjusted
The size of state compression ratio, by adjusting the addition of active silica fume, and then can adjust cold crushing strength, therefore
Can require to make corresponding adjustment it is ensured that the globality of refractory masonry and sealing according to the different of client.
Obviously, above-described embodiment is only intended to clearly illustrate made example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change therefore amplified or change
Move within still in the protection domain of the invention.
Claims (8)
1. a kind of silicon carbide buffering mud for blast furnace buffering seam is it is characterised in that inclusion sub-white corundum, aluminium oxide are micro-
Powder, fire clay, refractory fibre ball and active silica fume, each component is calculated by weight as: 10 ~ 40 parts of carborundum,
0 ~ 7 part of alumina powder, 1 ~ 10 part of fire clay, 5 ~ 30 parts of refractory fibre ball, 1 ~ 5 part of active silica fume.
2. silicon carbide buffering mud according to claim 1 is it is characterised in that described refractory fibre ball is to become by electrostatic
The loose type fibrous nodules that the polymerization of type method is formed, its a diameter of 3 ~ 8mm.
3. silicon carbide buffering mud according to claim 1 is it is characterised in that described silicon carbide buffering mud also wraps
Include compound additive, described compound additive is made up of dextrin and carboxymethyl cellulose.
4. silicon carbide buffering mud according to claim 3 is it is characterised in that each component of described compound additive is pressed
Parts by weight are calculated as: 0.5 ~ 5 part of dextrin, 0.1 ~ 5 part of carboxymethyl cellulose.
5. silicon carbide buffering mud according to claim 1 is it is characterised in that described silicon carbide buffering mud also wraps
Include combined binder, described combined binder is made up of thermosetting resin, ethylene glycol and ethanol.
6. silicon carbide buffering mud according to claim 5 is it is characterised in that the addition of described combined binder is
10 ~ 50 weight portions.
7. silicon carbide buffering mud according to claim 5 is it is characterised in that each component of described combined binder is pressed
Parts by weight are calculated as: 1 ~ 10 part of thermosetting resin, 5 ~ 30 parts of ethylene glycol, 5 ~ 20 parts of ethanol.
8. the arbitrary described silicon carbide of claim 1 ~ 7 buffers the preparation method of mud it is characterised in that comprising the steps:
After each component is weighed by weight, it is uniformly mixed, that is, obtain described silicon carbide buffering mud.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610742340.0A CN106348769B (en) | 2016-08-27 | 2016-08-27 | A kind of silicon carbide buffering mud for blast furnace buffering seam |
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| CN201610742340.0A CN106348769B (en) | 2016-08-27 | 2016-08-27 | A kind of silicon carbide buffering mud for blast furnace buffering seam |
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| CN106348769B CN106348769B (en) | 2019-07-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608214A (en) * | 2019-01-31 | 2019-04-12 | 中冶武汉冶金建筑研究院有限公司 | A kind of non-cement slurry |
| CN111689781A (en) * | 2020-06-09 | 2020-09-22 | 中冶武汉冶金建筑研究院有限公司 | Siliceous buffering slurry for hot-blast stove buffering seam |
Citations (6)
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|---|---|---|---|---|
| CN1094384A (en) * | 1994-05-03 | 1994-11-02 | 冶金工业部钢铁研究总院 | Non-aqueous thermosetting refractory mortar |
| CN101269983A (en) * | 2008-04-23 | 2008-09-24 | 宜兴市丁山耐火器材有限公司 | Stress buffering type fire resistive material for dry coke quenching equipment and method for manufacturing same |
| CN102020473A (en) * | 2009-09-23 | 2011-04-20 | 洛阳利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN102910916A (en) * | 2012-09-18 | 2013-02-06 | 通达耐火技术股份有限公司 | Anhydrous press-in slurry used for blast furnace |
| CN103553677A (en) * | 2013-10-31 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Anhydrous pressed-in mud for blast furnace |
| CN104058756A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Buffering filler fed by pump and used for thermal-state maintenance of hot-blast stove system |
-
2016
- 2016-08-27 CN CN201610742340.0A patent/CN106348769B/en active Active
Patent Citations (6)
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| CN1094384A (en) * | 1994-05-03 | 1994-11-02 | 冶金工业部钢铁研究总院 | Non-aqueous thermosetting refractory mortar |
| CN101269983A (en) * | 2008-04-23 | 2008-09-24 | 宜兴市丁山耐火器材有限公司 | Stress buffering type fire resistive material for dry coke quenching equipment and method for manufacturing same |
| CN102020473A (en) * | 2009-09-23 | 2011-04-20 | 洛阳利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN102910916A (en) * | 2012-09-18 | 2013-02-06 | 通达耐火技术股份有限公司 | Anhydrous press-in slurry used for blast furnace |
| CN103553677A (en) * | 2013-10-31 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Anhydrous pressed-in mud for blast furnace |
| CN104058756A (en) * | 2014-06-16 | 2014-09-24 | 北京首钢股份有限公司 | Buffering filler fed by pump and used for thermal-state maintenance of hot-blast stove system |
Non-Patent Citations (2)
| Title |
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| 张克铭等: "《耐火纤维应用技术》", 31 January 2007, 冶金工业出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109608214A (en) * | 2019-01-31 | 2019-04-12 | 中冶武汉冶金建筑研究院有限公司 | A kind of non-cement slurry |
| CN111689781A (en) * | 2020-06-09 | 2020-09-22 | 中冶武汉冶金建筑研究院有限公司 | Siliceous buffering slurry for hot-blast stove buffering seam |
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| CN106348769B (en) | 2019-07-12 |
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