CN103467114A - Silica sol compound castable - Google Patents
Silica sol compound castable Download PDFInfo
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- CN103467114A CN103467114A CN201310370412XA CN201310370412A CN103467114A CN 103467114 A CN103467114 A CN 103467114A CN 201310370412X A CN201310370412X A CN 201310370412XA CN 201310370412 A CN201310370412 A CN 201310370412A CN 103467114 A CN103467114 A CN 103467114A
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- particle diameter
- alumina
- silica sol
- silicon sol
- micro mist
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Abstract
The invention discloses a silica sol compound castable, which adopts flint clay and alumina as aggregate, kyanite powder, alumina fine powder, SiO2 micro powder, a-Al203 micro powder and SiC micro powder as fine powder, and silica sol as a binding agent. Silica sol is a polysilicic acid disperse system with the particle size from several nanometers to tens of nanometers; when the silica sol is mixed with activated a-Al203 micro powder, colloid particles can be adsorbed on the surface of a-Al203 particles to form single-layered saturated distribution and filled into clearances of a-Al203 particles. Therefore, the dispersity and permeability are better, after the curing agent is hydrated and forms ions to facilitate gelling the silica sol, silanol genes on the surfaces of nano particles condense and react, after drying, the colloid particles are combined via the chemical bond of Si-O-Si to form a stable spatial network structure, so that Al203 particles are firmly combined, at the same time, the silica sol is covered on the surface of a solid to form a firm silica sol film, as a result, the breaking strength and compression strength of a pouring body are higher.
Description
Technical field
The present invention relates to silicon sol in conjunction with mould material.
Background technology
At present, cement and non-cement high alumina castable are hanged down in mostly being that the tundish permanent layer is used, after low cement high alumina castable moulding because the grain growth after hydrated cementitious causes material relatively closely knit, moisture is difficult to discharge, generally also need maintenance 6d after solidifying, while being toasted after the folding mould, baking is unsuitable too fast, generally need baker 8d, and cement-free castable is lower because of normal temperature strength, need seasoning 8d after cast, then the baking time that also needs the 8d left and right, not only furnace drying time is long to adopt these two kinds of mould material, and bake process is difficult to control, heat-up rate is slightly fast, pour mass changes under high temperature action, form local internal stress, when internal stress reaches certain limit, will produce rapid expansion, cause partial fracture, even occur caving in.The shakiness of control is slightly arranged in bake process, must cause the materials'use performance to reduce, accelerate the speed that it is etched, finally affect its work-ing life.
Summary of the invention
Technical problem to be solved by this invention just is to provide a kind of silicon sol in conjunction with mould material, can use extremely short time demoulding, and maintenance and baking improve permanent layer work-ing life.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: a kind of silicon sol, in conjunction with mould material, be take flint clay and alumina as aggregate, with aquamaine stone flour, alumina fine powder, SiO
2micro mist, a-Al
2o
3micro mist and SiC micro mist are fine powder, adopt silicon sol as wedding agent.
Preferably, this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: flint clay 16～18wt% that particle diameter is 5～8mm; Alumina aggregate 47～53wt% that particle diameter is 0.088mm～5mm; Alumina fine powder 10～15wt% that particle diameter is 0.088mm; Kyanite fine powder 2～3wt% that particle diameter is 0.074mm; SiO
2micro mist 3～5wt%; A-Al
2o
32～3%; SiC micro mist 2～4wt%; Silicon sol 2～5wt%.
Preferably, in described alumina aggregate, particle diameter and the weight percent of each component is: alumina aggregate 14～15wt% that particle diameter is 3～5mm; Alumina aggregate 8～10wt% that particle diameter is 1～3mm; Alumina aggregate 28～35wt% that particle diameter is 0.088mm～1mm.
Preferably, this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 17wt% that particle diameter is 5～8mm; The alumina aggregate 15wt% that particle diameter is 3～5mm; The alumina aggregate 8wt% that particle diameter is 1～3mm; The alumina aggregate 30wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 13wt% that particle diameter is 0.088mm; The kyanite fine powder 2.5wt% that particle diameter is 0.074mm; SiO
2micro mist: 5wt%; A-Al
2o
3micro mist 2.5%; SiC micro mist 3wt%; Silicon sol 4wt%.
Preferably, this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 16wt% that particle diameter is 5～8mm; The alumina aggregate 14wt% that particle diameter is 3～5mm; The alumina aggregate 10wt% that particle diameter is 1～3mm; The alumina aggregate 34wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 10wt% that particle diameter is 0.088mm; The kyanite fine powder 3wt% that particle diameter is 0.074mm; SiO
2micro mist 3wt%; A-Al
2o
3micro mist 3%; SiC micro mist 4wt%; Silicon sol 3wt%.
Silicon sol of the present invention has following characteristics and advantage in conjunction with mould material:
1, take flint clay, alumina is aggregate, aquamaine stone flour, alumina fine powder, SiO
2micro mist, a-Al
2o
3micro mist, SiC micro mist are fine powder, adopt silicon sol to make wedding agent.Silicon sol is the poly silicic acid dispersion system of particle diameter from several nanometers to tens nanometer, as silicon sol and active a-Al
2o
3when micro mist mixes, colloidal particle can be adsorbed on a-Al
2o
3particle surface, form the saturated distribution of individual layer, is filled in a-Al simultaneously
2o
3the particle gap, therefore, it is dispersed and perviousness is better, while forming ion promotion silicon melten gel gel after the solidifying agent aquation, after causing the nanoparticle surface silanol group because of the generation condensation, react, after drying, colloidal particle combines with chemical bond (Si-O-Si), form stable spacial framework, by Al
2o
3particle combines firmly, simultaneously, silicon sol covers solid surface and forms firm silicon sol film, therefore folding strength, the compressive strength of pour mass are higher, can match in excellence or beauty in the low cement deposit material of nothing, but its folding strength and compressive strength increase with the rising of thermal treatment temp, this is a breakthrough improvement to cement in conjunction with the decline of mould material medium temperature intensity.
2, improve permanent layer work-ing life more than one times.Common cement is 60～80 times in conjunction with mould material general work-ing life, in test, cement deposit material almost completely ftractures after 60 thermal shocks circulation, examine under a microscope, its weave construction is comprised of separated from one another, the close block of size, and this is not form sintering when the middle temperature due to the Portland cement mould material, the discharge of a large amount of free-waters during simultaneously due to drying, void content is increased, and thermal conductivity reduces, and heat-shock resistance is poor; Silicon sol, in conjunction with mould material, crackle do not occurring after 140 thermal shocks circulation, and after 110 ℃ of 24H are dried, its compressive strength is 106MPa, compressive strength conservation rate nearly 95%.This is mainly due to nanometer SiO in colloidal sol
2be introduced in to water in material material and produce reaction, improved the anti-thermal shock of product, thereby guaranteed that permanent layer reaches more than 120～160 times work-ing life.
3, this mould material can be used extremely short time demoulding, and maintenance and baking, for the time has been won in the normal operation of body of heater, improved economic benefit, silicon sol is in conjunction with mould material, and construction molding 12h can toast by demoulding, and from room temperature～1300, a ℃ baking just can drop into normal production in 8～10 hours in baking, material demoulding half a day, 1d baker have really been realized, and the Portland cement mould material, more than maintenance and baking time are wanted 15d, therefore, with the Portland cement mould material, compare, baking time has shortened.So both increased the active time of tundish, improved the utilization ratio of equipment, saved again fuel and the expense of baker, also can not exhale pernicious gases when baker, this is on all four with the requirement that country will be based upon energy-saving and emission-reduction and synergy to novel material exploitation at present simultaneously.
4, remarkable in economical benefits: it is limit of age that the Portland cement mould material makes 80 heats, permanent layer completely newly is bundled into originally and is about: 108560 yuan/only, approximately 1800 yuan (2800.00 yuan=39200.00 yuan of 14 tons of * unit prices of materials of single cast cost, 80 yuan of/day * 3 people of 192 hours=53760.00 yuan baking 15 days * of wage for workmen of 280 yuan of/hour * of 12000.00 yuan of baking media of thermofin=3600 yuan) with silicon sol, in conjunction with mould material average 140 heats in work-ing life, adjust, completely newly be bundled into originally and be about: 54800 yuan/only, approximately 391.00 yuan (2800.00 yuan=39200.00 yuan of 14 tons of * unit prices of materials of single cast cost, 80 yuan of/day * 3 people of 12 hours=3360 yuan baking 1 day * of wage for workmen of 280 yuan of/hour * of 12000.00 yuan of baking media of thermofin=240 yuan) to pour into a mould 8 heats 120t converter day, adjust, steel mill's year is saved steel-making cost 360*8*(1800-391)=405.79 ten thousand yuan.
Embodiment
It is aggregate that silicon sol of the present invention be take flint clay and alumina in conjunction with mould material, with aquamaine stone flour, alumina fine powder, SiO
2micro mist, a-Al
2o
3micro mist and SiC micro mist are fine powder, adopt silicon sol as wedding agent.This silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: flint clay 16～18wt% that particle diameter is 5～8mm; Alumina aggregate 47～53wt% that particle diameter is 0.088mm～5mm; Alumina fine powder 10～15wt% that particle diameter is 0.088mm; Kyanite fine powder 2～3wt% that particle diameter is 0.074mm; SiO
2micro mist 3～5wt%; A-Al
2o
32～3%; SiC micro mist 2～4wt%; Silicon sol 2～5wt%.In described alumina aggregate, the particle diameter of each component and weight percent are: alumina aggregate 14～15wt% that particle diameter is 3～5mm; Alumina aggregate 8～10wt% that particle diameter is 1～3mm; Alumina aggregate 28～35wt% that particle diameter is 0.088mm～1mm.
Specific embodiment 1, this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 17wt% that particle diameter is 5～8mm; The alumina aggregate 15wt% that particle diameter is 3～5mm; The alumina aggregate 8wt% that particle diameter is 1～3mm; The alumina aggregate 30wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 13wt% that particle diameter is 0.088mm; The kyanite fine powder 2.5wt% that particle diameter is 0.074mm; SiO
2micro mist: 5wt%; A-Al
2o
3micro mist 2.5%; SiC micro mist 3wt%; Silicon sol 4wt%.
Above-mentioned silicon sol comprises the following steps successively in conjunction with the preparation method of mould material:
A), after the flint clay particle is sieved by diameter, the flint clay 17wt% that to get particle diameter be 5～8mm puts to the Preblend system PBS head tank;
B) after alumina particle is sieved by diameter, the alumina aggregate 15wt% that to get particle diameter be 3～5mm; The alumina aggregate 30wt% that particle diameter is 0.088～1mm; The alumina aggregate 8wt% that particle diameter is 1～3mm puts to the Preblend system PBS head tank;
C) get the alumina particle that particle diameter is 0.088～1mm and be finely ground into ball mill the alumina fine powder that particle diameter is 0.088mm;
D) taking the kyanite fine powder 2.5wt% that particle diameter is 0.074mm puts to forced stirrer;
E) taking the alumina fine powder 13wt% that particle diameter is 0.088mm puts to forced stirrer;
F) take SiO
2micro mist 5wt% puts to forced stirrer;
G) take a-Al
2o
32.5wt% puts to forced stirrer;
H) taking SiC micro mist 3wt% puts to forced stirrer
I) taking silicon sol 4wt% puts to forced stirrer;
J) steps d), step e), step f), step g), step h), step I) batching puts to forced stirrer, starts forced stirrer and stirs and within 8～10 minutes, carry out pre-mixing, the pre-mixing postposition is to mixing system;
K) will walk poly-flint clay and step b in a)) in alumina particle be filled in the Preblend system PBS tank, batch mixing was delivered to mixing system after 6～8 minutes;
L) in mixing system by j) batching and the k that carry) raw material carried of step stirs together and carries out packing after 8～12 minutes and obtain silicon sol in conjunction with mould material.
In above-mentioned steps, the weight percent of each component is the ratio of silicon sol in conjunction with the mould material gross weight that account for.
The key technical indexes of the said products is:
1、Al
2O
3%≥60
2, ℃ * 3h >=9.0,110 ℃ of * 24h >=5.2 1400 of folding strength/MPa
3, ℃ * 3h >=80,110 ℃ of * 24h >=35 1400 of compressive strength/MPa
4, volume density g/cm
3℃ * 3h>=2.53,110 ℃ of * 24h>=2.54 1400
5,1400 ℃ of * 3h ± 0.5 of heater wire velocity of variation %.
Specific embodiment 2, this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 16wt% that particle diameter is 5～8mm; The alumina aggregate 14wt% that particle diameter is 3～5mm; The alumina aggregate 10wt% that particle diameter is 1～3mm; The alumina aggregate 34wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 10wt% that particle diameter is 0.088mm; The kyanite fine powder 3wt% that particle diameter is 0.074mm; SiO
2micro mist 3wt%; A-Al
2o
3micro mist 3%; SiC micro mist 4wt%; Silicon sol 3wt%.
Silicon sol mould material folding strength and compressive strength but increase with the rising of thermal treatment temp, this is a breakthrough improvement to cement in conjunction with the decline of mould material medium temperature intensity, improve work-ing life more than one times, reduce the single stove cost 79% of cast, existing oneself at the water steel, climb steel, elder brother's steel drops into test, product all obtains unit on probation certainly, in the pouring box integral turn-key projects, uses oneself through for enterprise, having obtained considerable economic benefit.
Claims (5)
1. a silicon sol, in conjunction with mould material, is characterized in that: take flint clay and alumina as aggregate, with aquamaine stone flour, alumina fine powder, SiO
2micro mist, a-Al
2o
3micro mist and SiC micro mist are fine powder, adopt silicon sol as wedding agent.
2. silicon sol according to claim 1, in conjunction with mould material, is characterized in that: this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: flint clay 16～18wt% that particle diameter is 5～8mm; Alumina aggregate 47～53wt% that particle diameter is 0.088mm～5mm; Alumina fine powder 10～15wt% that particle diameter is 0.088mm; Kyanite fine powder 2～3wt% that particle diameter is 0.074mm; SiO
2micro mist 3～5wt%; A-Al
2o
32～3%; SiC micro mist 2～4wt%; Silicon sol 2～5wt%.
3. silicon sol according to claim 2, in conjunction with mould material, is characterized in that: in described alumina aggregate, the particle diameter of each component and weight percent are: alumina aggregate 14～15wt% that particle diameter is 3～5mm; Alumina aggregate 8～10wt% that particle diameter is 1～3mm; Alumina aggregate 28～35wt% that particle diameter is 0.088mm～1mm.
4. silicon sol according to claim 3, in conjunction with mould material, is characterized in that: this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 17wt% that particle diameter is 5～8mm; The alumina aggregate 15wt% that particle diameter is 3～5mm; The alumina aggregate 8wt% that particle diameter is 1～3mm; The alumina aggregate 30wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 13wt% that particle diameter is 0.088mm; The kyanite fine powder 2.5wt% that particle diameter is 0.074mm; SiO
2micro mist: 5wt%; A-Al
2o
3micro mist 2.5%; SiC micro mist 3wt%; Silicon sol 4wt%.
5. silicon sol according to claim 3, in conjunction with mould material, is characterized in that: this silicon sol in conjunction with particle diameter and the weight percent of each component in mould material is: the flint clay 16wt% that particle diameter is 5～8mm; The alumina aggregate 14wt% that particle diameter is 3～5mm; The alumina aggregate 10wt% that particle diameter is 1～3mm; The alumina aggregate 34wt% that particle diameter is 0.088mm～1mm; The alumina fine powder 10wt% that particle diameter is 0.088mm; The kyanite fine powder 3wt% that particle diameter is 0.074mm; SiO
2micro mist 3wt%; A-Al
2o
3micro mist 3%; SiC micro mist 4wt%; Silicon sol 3wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310370412XA CN103467114A (en) | 2013-08-22 | 2013-08-22 | Silica sol compound castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310370412XA CN103467114A (en) | 2013-08-22 | 2013-08-22 | Silica sol compound castable |
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|---|---|
| CN103467114A true CN103467114A (en) | 2013-12-25 |
Family
ID=49792197
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|---|---|---|---|
| CN201310370412XA Pending CN103467114A (en) | 2013-08-22 | 2013-08-22 | Silica sol compound castable |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272301A (en) * | 2015-11-02 | 2016-01-27 | 武汉科技大学 | Torpedo ladle lid lining and preparation method thereof |
| CN109574690A (en) * | 2019-01-24 | 2019-04-05 | 北京利尔高温材料股份有限公司 | Energy-saving new articulated system castable of one kind and preparation method thereof |
| CN111253156A (en) * | 2020-01-20 | 2020-06-09 | 武汉重远炉窑工程技术服务有限公司 | Zirconium-aluminum amorphous pouring hot-patch refractory material |
| CN114085557A (en) * | 2021-12-24 | 2022-02-25 | 河北欧禹科技有限公司 | Water-based inorganic coating and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785908A (en) * | 2005-11-03 | 2006-06-14 | 武汉钢铁(集团)公司 | Refractory pouring material used for melten iron desulfur agitator |
| CN101602595A (en) * | 2009-06-30 | 2009-12-16 | 河南省耕生耐火材料有限公司 | Silicasol-combined corundum castable and prepare the method for abrasion-proof prefabricated component |
| CN101941845A (en) * | 2010-08-26 | 2011-01-12 | 通化耐博耐火材料有限责任公司 | Iron-runner quick-drying casting material combined with silica sol |
| CN102381881A (en) * | 2011-07-25 | 2012-03-21 | 郑州京华耐火材料实业有限公司 | High-aluminum silicon carbide casting material combined with silica sol |
-
2013
- 2013-08-22 CN CN201310370412XA patent/CN103467114A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785908A (en) * | 2005-11-03 | 2006-06-14 | 武汉钢铁(集团)公司 | Refractory pouring material used for melten iron desulfur agitator |
| CN101602595A (en) * | 2009-06-30 | 2009-12-16 | 河南省耕生耐火材料有限公司 | Silicasol-combined corundum castable and prepare the method for abrasion-proof prefabricated component |
| CN101941845A (en) * | 2010-08-26 | 2011-01-12 | 通化耐博耐火材料有限责任公司 | Iron-runner quick-drying casting material combined with silica sol |
| CN102381881A (en) * | 2011-07-25 | 2012-03-21 | 郑州京华耐火材料实业有限公司 | High-aluminum silicon carbide casting material combined with silica sol |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272301A (en) * | 2015-11-02 | 2016-01-27 | 武汉科技大学 | Torpedo ladle lid lining and preparation method thereof |
| CN105272301B (en) * | 2015-11-02 | 2017-08-08 | 武汉科技大学 | A kind of fish torpedo ladle cover liner and preparation method thereof |
| CN109574690A (en) * | 2019-01-24 | 2019-04-05 | 北京利尔高温材料股份有限公司 | Energy-saving new articulated system castable of one kind and preparation method thereof |
| CN111253156A (en) * | 2020-01-20 | 2020-06-09 | 武汉重远炉窑工程技术服务有限公司 | Zirconium-aluminum amorphous pouring hot-patch refractory material |
| CN111253156B (en) * | 2020-01-20 | 2022-06-14 | 武汉重远炉窑工程技术服务有限公司 | Zirconium-aluminum amorphous pouring hot-patch refractory material |
| CN114085557A (en) * | 2021-12-24 | 2022-02-25 | 河北欧禹科技有限公司 | Water-based inorganic coating and preparation method thereof |
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Application publication date: 20131225 |