CN104045362B - A kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting - Google Patents
A kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting Download PDFInfo
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- CN104045362B CN104045362B CN201410323748.5A CN201410323748A CN104045362B CN 104045362 B CN104045362 B CN 104045362B CN 201410323748 A CN201410323748 A CN 201410323748A CN 104045362 B CN104045362 B CN 104045362B
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- aluminum
- liquid wetting
- wetting resisting
- liquid
- raw material
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- 239000007788 liquid Substances 0.000 title claims abstract description 55
- 238000009736 wetting Methods 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 40
- 229910017083 AlN Inorganic materials 0.000 title claims abstract description 28
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011734 sodium Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 12
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 11
- 229910002367 SrTiO Inorganic materials 0.000 claims abstract description 10
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 239000004568 cement Substances 0.000 claims abstract description 7
- 238000010276 construction Methods 0.000 claims abstract description 7
- 239000006185 dispersion Substances 0.000 claims abstract description 7
- 101710194948 Protein phosphatase PhpP Proteins 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims abstract description 6
- 102220042174 rs141655687 Human genes 0.000 claims abstract description 6
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims abstract description 6
- 229920005646 polycarboxylate Polymers 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 24
- 239000004411 aluminium Substances 0.000 abstract description 19
- 230000035939 shock Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 abstract 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 abstract 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Abstract
The invention belongs to fire resisting material field, relate to a kind of preparation method of silicon carbide castable of aluminum-liquid wetting resisting, its raw material composition and proportioning: the fine silica powder 5wt%% ~ 6wt% of 8mm-0mm aluminum nitride particle 63wt% ~ 69wt% ﹑ < 0.044mm aluminium nitride fine powder 18wt% ~ 21wt% ﹑ < 0.074mm pure calcium aluminate cement 4wt%% ~ 7wt% ﹑ D90=0.1 μm, adopt BaSO
4, TiB
2, SrTiO
3, Na
3alF
6compound is as aluminum-liquid wetting resisting agent, and its add-on is 1wt% ~ 6wt%, and 0.12% tripoly phosphate sodium STPP and 0.03% Sodium hexametaphosphate 99 are as dispersion agent, and Alumina gel is as construction liquid.Mould material prepared by the present invention has that enough Hao ﹑ chemical stabilities of Qiang Du ﹑ thermal shock resistance You Liang ﹑ volume stability are good, and key is aluminum-liquid wetting resisting, Heat stability is good, and aluminum-resistant liquid corrodes, and does not affect aluminium liquid composition, long service life.
Description
Technical field
The invention belongs to fire resisting material field, relate generally to a kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting.
Background technology
Coloured industry production large aluminum alloy plate ingot, and further the product such as deep processing Lv Ban Dai ﹑ aluminium foil requires high to the control accuracy of al alloy component.As the Large size Aluminium smelting furnace inner lining material of aluminium alloy deep processing project key equipment, especially the control of inner lining material to al alloy component that the throat such as Bu ﹑ sidewall and stream aluminium groove adopts Di aluminium mouth valley of entering of aluminium melting furnace plays an important role.Aluminium liquid is not only containing the element such as chemically reactive height Mei ﹑ silicon and zinc, and mobility is fabulous, and 750 DEG C time, its viscosity is only 0.104Pas, close with the viscosity (0.1Pas) of water when 20 DEG C, easily to furnace lining internal penetration.Large size Aluminium smelting furnace enters periodicity that Bu ﹑ sidewall and stream aluminium Pot Lining material Di aluminium mouth valley not only will resist aluminium liquid and washes away the physical damnification that causes and thermal shock is impacted, the more important thing is and will cheat aluminium liquid wetting, do not react with the alloying constituent in aluminium liquid, and then affect the composition of alloy product.This position current material aluminum-liquid wetting resisting is poor, easily pollutes aluminium liquid composition, causes alloy product off analysis.
Summary of the invention
For solving the problems of the technologies described above, object of the present invention proposes a kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting, makes it have aluminum-liquid wetting resisting, does not affect aluminium liquid composition, the feature of long service life.
Object of the present invention adopts following technical scheme to realize:
A kind of aluminium nitride mould material of aluminum-liquid wetting resisting, the raw material composition of described mould material and proportioning are: the fine silica powder 5wt% ~ 6wt% of 8mm-0mm aluminum nitride particle 63wt% ~ 69wt% ﹑ < 0.044mm aluminium nitride fine powder 18wt% ~ 21wt% ﹑ < 0.074mm pure calcium aluminate cement 4wt% ~ 7wt% ﹑ D90=0.1 μm, adopt BaSO
4, TiB
2, SrTiO
3, Na
3alF
6compound is as aluminum-liquid wetting resisting additive, and its add-on is 1wt% ~ 6wt%, and account for raw material gross weight 0.12% tripoly phosphate sodium STPP and 0.03% polycarboxylate as dispersion agent; During preparation, first the aluminum nitride powder raw material of aluminum-liquid wetting resisting agent and granularity < 0.044mm is ground 30mins altogether in vibration mill; Make aluminum-liquid wetting resisting agent and aluminum nitride powder abundant homogenizing in advance, make homogenizing powder, then homogenizing powder is mixed with other component in proportion, the additional Alumina gel accounting for weight 4% ~ 8% in raw material when construction is stirred, mix evenly; Then for cast-in-site, the aluminium nitride mould material of aluminum-liquid wetting resisting is prepared.
BaSO in described aluminum-liquid wetting resisting agent
4, TiB
2, SrTiO
3, Na
3alF
6weight ratio be 2:1:1:1.
In described aln raw material, aluminium nitride content >=98.5wt% in described aln raw material.
Described pure calcium aluminate cement granularity < 0.074mm, Al in raw material
2o
3the large 71wt% of content.
SiO in described fine silica powder raw material
2content be 91wt% ~ 97wt%.
In the present invention: select BaSO
4, TiB
2, SrTiO
3, Na
3alF
6compound aluminum-liquid wetting resisting agent has following characteristics, and (1) aluminium nitride thing material itself is not easily wetted by aluminum, and its wetting angle is 138 °, and therefore by its main component as refractory castable, aluminum-liquid wetting resisting is good.(2) BaSO
4the free SiO of mould material can be caught
2, improve not being wetted by aluminum and aggressiveness of mould material, but when adding separately, effect is bad, by selecting the BaSO of compound
4, TiB
2, SrTiO
3, Na
3alF
6aluminum-liquid wetting resisting agent, significantly improves not the being wetted by aluminum property of mould material, the resistance to fouling of thermostability, mould material.(3) improve the intensity of mould material with Alumina gel and pure calcium aluminate as combined binder; In addition, Alumina gel can be well dispersed in inside mould material, and aluminum-resistant liquid erosion performance is good, is easy to the overall performance improving mould material.
In the present invention: adopt the aluminium nitride fine powder of aluminum-liquid wetting resisting agent and mould material to carry out common mill: aluminum-liquid wetting resisting agent is most important for this kind of mould material, but action of forced stirring and dispersion agent is only adopted to be not enough to aluminum-liquid wetting resisting agent is disperseed in the matrix of mould material effectively equably due to the production method of add-on Shao ﹑ surfactivity also Bu Gao ﹑ tradition mould material; Adopt and aluminum-liquid wetting resisting agent and aluminium nitride fine powder are first carried out common mill, and then mix with other components of mould material, make a small amount of aluminum-liquid wetting resisting agent abundant homogenizing in mould material matrix, reach the object that whole mould material matrix is not wetted by aluminum.Experiment proves, aluminum-liquid wetting resisting agent add-on is less than the object that 1% tentatively can play anti-aluminium liquid wetting, is greater than construction and high-temperature behavior that 6% will have a strong impact on mould material.
Mould material of the present invention is through test, for positions such as Bu ﹑ sidewall Di Large size Aluminium smelting furnace (maximum capacity 100 tons) enterprising aluminium mouth valley and stream aluminium grooves, there is enough Hao ﹑ chemical stabilities of Qiang Du ﹑ thermal shock resistance You Liang ﹑ volume stability good, key is aluminum-liquid wetting resisting, do not affect aluminium liquid composition, long service life.
Embodiment
Embodiment 1: aluminum-liquid wetting resisting aluminium nitride mould material is by the fine silica powder 5wt% ﹑ compound aluminum-liquid wetting resisting additive 1wt%(BaSO of 8mm-0mm aluminum nitride particle 69wt% ﹑ < 0.044mm aluminium nitride fine powder 21wt% ﹑ < 0.074mm pure calcium aluminate water 4wt% ﹑ D90=0.1 μm
40.4wt%, TiB
20.2wt%, SrTiO
30.2wt%, Na
3alF
60.2wt%); And account for raw material gross weight 0.12% tripoly phosphate sodium STPP and 0.03% polycarboxylate as dispersion agent; During preparation, first the aluminium nitride fine powder raw material of aluminum-liquid wetting resisting agent and granularity < 0.044mm is ground 30mins altogether in vibration mill; Make aluminum-liquid wetting resisting agent and aluminium nitride fine powder abundant homogenizing in advance, make homogenizing powder, the ratio accounted for altogether at aluminium nitride refractory castable in aluminum-liquid wetting resisting agent and aluminium nitride fine powder by homogenizing powder again and 22wt% and other component mix, additional about 5wt% Alumina gel when construction is stirred, mix evenly, at the on-the-spot vibrating casting of block stove, use after conventional maintenance baking.
Embodiment 2: aluminum-liquid wetting resisting aluminium nitride mould material is by the fine silica powder 6wt% ﹑ compound aluminum-liquid wetting resisting additive 4wt%(BaSO of 8mm-0mm aluminum nitride particle 66wt% ﹑ < 0.044mm aluminium nitride fine powder 18wt% ﹑ < 0.074mm pure calcium aluminate cement 6wt% ﹑ D90=0.1 μm
41.6wt%, TiB
20.8wt%, SrTiO
30.8wt%, Na
3alF
60.8wt%); And account for raw material gross weight 0.12% tripoly phosphate sodium STPP and 0.03% polycarboxylate as dispersion agent; Preparation process is with embodiment 1, and additional about 6wt% Alumina gel when construction is stirred, mixes evenly, at the on-the-spot vibrating casting of block stove, uses after conventional maintenance baking.
Embodiment 3: aluminum-liquid wetting resisting aluminium nitride mould material is by the fine silica powder 6wt% ﹑ compound aluminum-liquid wetting resisting additive 4wt%(BaSO of 8mm-0mm aluminum nitride particle 65wt% ﹑ < 0.044mm aluminium nitride fine powder 18wt% ﹑ < 0.074mm pure calcium aluminate cement 7wt% ﹑ D90=0.1 μm
41.6wt%, TiB
20.8wt%, SrTiO
30.8wt%, Na
3alF
60.8wt%); And account for raw material gross weight 0.12% tripoly phosphate sodium STPP and 0.03% polycarboxylate as dispersion agent; Preparation process is with embodiment 1, and additional about 8wt% Alumina gel when construction is stirred, mixes evenly, at the on-the-spot vibrating casting of block stove, uses after conventional maintenance baking.
Claims (4)
1. the preparation method of the aluminium nitride mould material of an aluminum-liquid wetting resisting, it is characterized in that: the raw material composition of described mould material and proportioning are: the fine silica powder 5wt% ~ 6wt% of 8mm-0mm aluminum nitride particle 63wt% ~ 69wt% ﹑ < 0.044mm aluminum nitride powder 18wt% ~ 21wt% ﹑ < 0.074mm pure calcium aluminate cement 4wt% ~ 7wt% ﹑ D90=0.1 μm, adopt BaSO
4, TiB
2, SrTiO
3, Na
3alF
6compound is as aluminum-liquid wetting resisting agent, and its add-on is 1wt% ~ 6wt%, and account for raw material gross weight 0.12% tripoly phosphate sodium STPP and 0.03% polycarboxylate as dispersion agent; During preparation, first the aluminum nitride powder raw material of aluminum-liquid wetting resisting agent and granularity < 0.044mm is ground 30min altogether in vibration mill; Make aluminum-liquid wetting resisting agent and aluminum nitride powder abundant homogenizing in advance, make homogenizing powder, then homogenizing powder is mixed with other component in proportion, the additional Alumina gel accounting for raw material gross weight 4% ~ 8% when construction is stirred, mix evenly; Then for cast-in-site, the aluminium nitride mould material of aluminum-liquid wetting resisting is prepared; BaSO in described aluminum-liquid wetting resisting agent
4and TiB
2and SrTiO
3and Na
3alF
6weight ratio 2:1:1:1.
2. the preparation method of the aluminium nitride mould material of a kind of aluminum-liquid wetting resisting according to claim 1, is characterized in that: aluminium nitride content >=98.5wt% in aln raw material.
3. the preparation method of the aluminium nitride mould material of a kind of aluminum-liquid wetting resisting according to claim 1, is characterized in that: described pure calcium aluminate cement granularity < 0.074mm, Al in raw material
2o
3content is greater than 71wt%.
4. the preparation method of the aluminium nitride mould material of a kind of aluminum-liquid wetting resisting according to claim 1, is characterized in that: SiO in described fine silica powder raw material
2content be 91wt% ~ 97wt%.
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|---|---|---|---|
| CN201410323748.5A CN104045362B (en) | 2014-07-09 | 2014-07-09 | A kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting |
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|---|---|---|---|
| CN201410323748.5A CN104045362B (en) | 2014-07-09 | 2014-07-09 | A kind of preparation method of aluminium nitride mould material of aluminum-liquid wetting resisting |
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| CN104045362B true CN104045362B (en) | 2015-12-09 |
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| CN101717246B (en) * | 2009-12-24 | 2012-03-28 | 中钢集团洛阳耐火材料研究院有限公司 | Method for preparing high alumina castable without being moistened by aluminum liquid |
| CN101734935B (en) * | 2009-12-24 | 2012-07-11 | 中钢集团洛阳耐火材料研究院有限公司 | Aluminium liquid infiltration-resistant high-aluminum plastic material and preparation method |
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Inventor after: Shi Lina Inventor before: Tang Lianfang |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20151105 Address after: 362241, No. 4, West foot mountain village, Xiu village, Longhu Town, Fujian, Jinjiang Applicant after: Shi Lina Address before: 13 No. 313117 Zhejiang city of Huzhou province Changxing County Coal Town Industrial Park, Eagle Road Applicant before: Tang Lianfang |
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Inventor after: Zhang Lianjin Inventor before: Shi Lina |
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Effective date of registration: 20161031 Address after: 362000 Anxi County, Quanzhou Province peach boat Township, South pit village Patentee after: Anxi County Taozhou Township Tongsheng Tea Professional Cooperatives Address before: 362241, No. 4, West foot mountain village, Xiu village, Longhu Town, Fujian, Jinjiang Patentee before: Shi Lina |
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Inventor after: Lu Shaokeng Inventor before: Zhang Lianjin |
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Effective date of registration: 20170424 Address after: 526108 Zhaoqing Province, Gaoyao City, Jinshan Town, Century Avenue, No. Jin Du Industrial Park, No. 116 Patentee after: Guangdong Hong Jin Aluminum Industry Co., Ltd. Address before: 362000 Anxi County, Quanzhou Province peach boat Township, South pit village Patentee before: Anxi County Taozhou Township Tongsheng Tea Professional Cooperatives |