CN103467117B - Anhydrous press-in mud of a kind of aluminium silicon carbide matter and preparation method thereof - Google Patents
Anhydrous press-in mud of a kind of aluminium silicon carbide matter and preparation method thereof Download PDFInfo
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- CN103467117B CN103467117B CN201310383716.XA CN201310383716A CN103467117B CN 103467117 B CN103467117 B CN 103467117B CN 201310383716 A CN201310383716 A CN 201310383716A CN 103467117 B CN103467117 B CN 103467117B
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Abstract
The present invention relates to the siliceous anhydrous press-in mud of a kind of aluminium charing, be made up of aggregate, matrix, metallic aluminium powder, bonding agent and additive, aggregate: cement 30-50 part, particulate material 30-50 part, matrix: silicon powder and/or bonding clay fine powder 5-10 part, silicon carbide 10-20 part, metallic aluminium powder: 1-5 part, additive: 0.5-1 part, bonding agent: liquid resin 35-45 part.By aggregate, substrate material, metallic aluminium powder Homogeneous phase mixing, during construction, in stirrer, add bonding agent and additive, mix, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.Utilize liquid phenolic resin as bonding agent, its technical characteristics is that carbon residue is high, and its press-in mud combined has anhydrous performance, can at high temperature construct, meet quick baking, form carbochain after being heated simultaneously, make material form an entirety, shrink little, space can not be formed between cooling stave and carbon brick, due to the introducing of carbon, improve the thermal conductivity of material, effectively can reduce the temperature of carbon brick.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to anhydrous press-in mud of a kind of aluminium silicon carbide matter and preparation method thereof.
Background technology
Along with the sustainable development of BF Technology in Bao Steel, improving constantly of furnace service life, the maintenance of blast furnace, especially the maintenance of middle and later periods seems and becomes more and more important.Traditional contains free-water and crystal water containing water system press-in material, and after baking, moisture content can not be discharged, and causes and forms steam at high operating temperatures, produces larger chemical erosion effect to carbon brick and SiC brick.In order to prevent chemical erosion and the high-temperature furnace body such as blast furnace, process furnace runout leakage coal gas, being sealed by non-water system press-in mud, preventing gas leak.
The present invention is in order to solve water system press-in material Problems existing, invent one with high-temperature electric calcined anthracite, silicon carbide, high alumina fine powder for main raw material(s), compound resin the anhydrous press-in mud that admixture multiple additives micro mist is consolidating material to be made, for filling between furnace shell and cooling stave and furnace bottom shrouding underclearance, form solid, fine and close entirety after solidification, stopped blast furnace and adopted the destruction of water quality grouting material to carbonaceous furnace lining after blast furnace is gone into operation.
Summary of the invention
Goal of the invention contains free-water and crystal water in order to solve containing water system press-in material, after baking, moisture content can not be discharged, cause and form steam at high operating temperatures, carbon brick and SiC brick are produced to the defect of larger chemical erosion effect, invent anhydrous press-in mud of a kind of aluminium carbon (silicon carbide) matter and preparation method thereof.
realize technical scheme of the present invention
The anhydrous press-in mud of a kind of aluminium silicon carbide matter, be made up of aggregate, matrix, metallic aluminium powder, bonding agent and additive, weight consists of:
Aggregate: cement 30-50 part, particulate material 30-50 part,
Matrix: silicon powder and/or bonding clay fine powder 5-10 part, silicon carbide 10-20 part,
Metallic aluminium powder: 1-5 part,
Additive: 0.5-1 part,
Bonding agent: liquid resin 35-45 part.
Particulate material of the present invention is selected from the mixture of one or more in the alumina of 85% grade, the alumina of 88% grade, the Brown Alundum of 95% grade, and granularity is at below 0.5mm;
Matrix of the present invention selects silicon powder and bonding clay fine powder weight ratio to be 5-95:95-5;
Bonding agent of the present invention is liquid phenolic resin, is yellow liquid, so its press-in mud combined has anhydrous performance, there is certain carbon residue simultaneously, additionally by silicon carbide and carbon containing class material, improve the thermal conductivity of anhydrous press-in mud, improve the thermo-efficiency of carbon brick and cooling stave;
Additive of the present invention is dispersion agent, solidifying agent etc., and dispersion agent is tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, and solidifying agent is hexamethylenetetramine etc., and wherein dispersion agent add-on 0.3-0.8 part, solidifying agent add-on is 0.2-0.7 part.
A kind of aluminium silicon carbide matter anhydrous press-in mud making method, by aggregate, substrate material Homogeneous phase mixing, during construction, bonding agent and additive is added in stirrer, mix, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
The technological process of preparation: raw material enters high temperature when factory-inspection-broken pulverizings-screening-inspection-batching-spice-pneumatic mortar machine is pressed into conveying-seasoning-subzero treatment-use to carry out certainly sintering.
Subzero treatment temperature of the present invention is 180 DEG C-200 DEG C.
Pneumatic mortar machine of the present invention is the pressure-feed stirrer of band.
the creativeness of invention
1. anhydrous press-in mud is as a technology of repairing blast furnace cooling stave gap prolongation blast furnace campaign, can carry out when blast furnace light maintenance, shorten servicing time, reduce the maintenance frequency, to the stably manufactured of blast furnace, increase yield then can play promotion and guaranteeing role;
2. metallic aluminium powder add the plasticity adding anhydrous press-in mud, improve the mobility of anhydrous press-in mud.
3. utilize liquid phenolic resin as bonding agent, its technical characteristics is that carbon residue is high, so the press-in mud making it combine has anhydrous performance, can at high temperature construct, meet quick baking, form carbochain after being heated simultaneously, make material form an entirety, shrink little, space can not be formed between cooling stave and carbon brick, due to the introducing of carbon, improve the thermal conductivity of material, effectively can reduce the temperature of carbon brick.
the effect of invention
The anhydrous press-in mud of aluminium silicon carbide matter: Al
2o
3:>=45(wt) %; C+SiC>=1.6(wt) %; Cold conditions compressive strength (110 DEG C/24h)>=2.5MPa.
The present invention adds dispersion agent, and anhydrous press-in slip fluidity is good, slowly can wriggle in less space, and in more than 2 hours presetting period, reach the object of infiltration completely, application property is good;
The present invention adds solidifying agent, and product setting time is short, and intensity is large, and after sclerosis, product is flexible and do not have firmly crisp, fracture, more can not produce space;
Take resol as bonding agent, the cure shrinkage of press-in material is little, has more excellent bonding strength;
Product has good affinity, coheres firmly with iron-clad and furnace lining, forms an entirety, is filled in densely between iron-clad and furnace lining;
To carbonaceous furnace lining and SiC brick without chemical erosion destruction.
The present invention adopts subzero treatment, makes it carry out under the high temperature used from sintering, reduces energy consumption.
Embodiment
The preparation technology of anhydrous press-in mud is different from traditional technique, and the technique of being burnt till by high temperature becomes the subzero treatment of low temperature 180 DEG C-200 DEG C.Save energy, makes it carry out from sintering under the high temperature used.
The technological process of preparation: raw material enters high temperature when factory-inspection-broken pulverizings-screening-inspection-batching-spice-pneumatic mortar machine is pressed into conveying-seasoning-subzero treatment-use to carry out certainly sintering.
embodiment 1
By aggregate: cement 40 parts, 40 parts, the alumina of 85% grade, matrix: silicon powder 8 parts, 20 parts, silicon carbide, metallic aluminium powder 1 part, Homogeneous phase mixing, during construction, bonding agent liquid phenolic resin 40 parts is added in special stirrer, pentasodium triphosphate of dispersing agent 0.4 part, solidifying agent hexamethylenetetramine 0.2 part, mixes, the anhydrous press-in mud of preparation possesses good flowing property, Al
2o
3:>=50(wt) %; C+SiC>=1.6(wt) %, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
embodiment 2
By aggregate: cement 40 parts, the Brown Alundum 50 parts of 95% grade, matrix: bonding clay fine powder 8 parts, 10 parts, silicon carbide, metallic aluminium powder 2 parts, Homogeneous phase mixing, during construction, bonding agent liquid phenolic resin 40 parts is added in special stirrer, pentasodium triphosphate of dispersing agent 0.5 part, solidifying agent hexamethylenetetramine 0.3 part, mixes, the anhydrous press-in mud of preparation possesses good flowing property, Al
2o
3:>=50(wt) %; C+SiC>=1.6(wt) %, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
embodiment 3
By aggregate: cement 30 parts, 50 parts, the alumina of 85% grade, matrix: silicon powder 4 parts, metallic aluminium powder 5 parts, bonding clay fine powder 4 parts, 15 parts, silicon carbide, metallic aluminium powder 5 parts, Homogeneous phase mixing, during construction, in special stirrer, add bonding agent liquid phenolic resin 45 parts, pentasodium triphosphate of dispersing agent 0.5 part, solidifying agent hexamethylenetetramine 0.3 part, mix, the anhydrous press-in mud of preparation possesses good flowing property, Al
2o
3:>=55(wt) %; C+SiC>=1.6(wt) %, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
embodiment 4
By aggregate: cement 50 parts, 10 parts, the alumina of 85% grade, 10 parts, the alumina of 88% grade, the Brown Alundum 10 parts of 95% grade, matrix: silicon powder 4 parts, bonding clay fine powder 4 parts, 15 parts, silicon carbide, metallic aluminium powder 5 parts, Homogeneous phase mixing, during construction, bonding agent liquid phenolic resin 45 parts is added in special stirrer, sodium hexametaphosphate dispersant 0.5 part, solidifying agent 0.3 hexamethylenetetramine part, mixes, the anhydrous press-in mud of preparation possesses good flowing property, Al
2o
3:>=45(wt) %; C+SiC>=1.6(wt) %, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
Claims (2)
1. the siliceous anhydrous press-in mud of aluminium charing, be made up of aggregate, matrix, metallic aluminium powder, bonding agent and additive, weight consists of:
Aggregate: cement 30-50 part and particulate material 30-50 part, particulate material is the mixture of one or more in the alumina of 85% grade, the alumina of 88% grade, the Brown Alundum of 95% grade, and granularity is at below 0.5mm;
Matrix: silicon carbide 10-20 part, silicon powder and/or bonding clay fine powder 5-10 part,
Metallic aluminium powder: 1-5 part;
Additive: 0.5-1 part, additive is dispersion agent and solidifying agent, and dispersion agent is tripoly phosphate sodium STPP or Sodium hexametaphosphate 99, and solidifying agent is hexamethylenetetramine, wherein dispersion agent add-on 0.3-0.8 part, and solidifying agent add-on is 0.2-0.7 part;
Bonding agent: liquid phenolic resin 35-45 part;
By aggregate, substrate material, metallic aluminium powder Homogeneous phase mixing, during construction, in stirrer, add bonding agent and additive, mix, utilize pneumatic mortar machine by mud under pressure, be transported to maintenance area, and be constantly pressed into, reach the effect of sealing.
2. the siliceous anhydrous press-in mud of aluminium charing according to claim 1, when it is characterized in that described matrix selects silicon powder and bonding clay fine powder to mix, weight ratio is 5-95:95-5.
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| CN201310383716.XA CN103467117B (en) | 2013-08-29 | 2013-08-29 | Anhydrous press-in mud of a kind of aluminium silicon carbide matter and preparation method thereof |
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| CN201310383716.XA CN103467117B (en) | 2013-08-29 | 2013-08-29 | Anhydrous press-in mud of a kind of aluminium silicon carbide matter and preparation method thereof |
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| CN103467117B true CN103467117B (en) | 2015-10-28 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103833393B (en) * | 2014-01-08 | 2015-08-19 | 长兴明晟冶金炉料有限公司 | Anhydrous press-in mud |
| CN107434418A (en) * | 2017-07-26 | 2017-12-05 | 武汉科技大学 | A kind of carbonaceous mud and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512523A (en) * | 1993-02-03 | 1996-04-30 | Asahi Glass Company Ltd. | Monolithic refractory powder mixture |
| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| CN101367667A (en) * | 2008-09-25 | 2009-02-18 | 武汉钢铁(集团)公司 | Flame-proof mending material for foundry ladle and manufacturing method thereof |
| CN103242049A (en) * | 2013-05-08 | 2013-08-14 | 绵阳汇丰炉窑材料有限公司 | Foam light refractory casting material and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000203954A (en) * | 1999-01-19 | 2000-07-25 | Taiko Rozai Kk | Slip casting refractory composition for tapping spout cover and its lining of blast furnace, and production of tapping spout cover of blast furnace using the same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512523A (en) * | 1993-02-03 | 1996-04-30 | Asahi Glass Company Ltd. | Monolithic refractory powder mixture |
| CN1994958A (en) * | 2006-12-19 | 2007-07-11 | 安徽省宁国市耐火材料有限责任公司 | Super intensified abrasion-proof pouring material |
| CN101367667A (en) * | 2008-09-25 | 2009-02-18 | 武汉钢铁(集团)公司 | Flame-proof mending material for foundry ladle and manufacturing method thereof |
| CN103242049A (en) * | 2013-05-08 | 2013-08-14 | 绵阳汇丰炉窑材料有限公司 | Foam light refractory casting material and preparation method thereof |
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Effective date of registration: 20190117 Address after: 313000 Industrial Concentration Zone of Lijiaxiang Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Changxing Nanye Metallurgical Materials Co., Ltd. Address before: 313000 Industrial Concentration Zone of Lijiaxiang Town, Changxing County, Huzhou City, Zhejiang Province Patentee before: Zhejiang Changxing Qiangli Refractories Co., Ltd. |