CN105948782B - A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball - Google Patents
A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball Download PDFInfo
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- CN105948782B CN105948782B CN201610283625.2A CN201610283625A CN105948782B CN 105948782 B CN105948782 B CN 105948782B CN 201610283625 A CN201610283625 A CN 201610283625A CN 105948782 B CN105948782 B CN 105948782B
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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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0022—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof obtained by a chemical conversion or reaction other than those relating to the setting or hardening of cement-like material or to the formation of a sol or a gel, e.g. by carbonising or pyrolysing preformed cellular materials based on polymers, organo-metallic or organo-silicon precursors
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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
- C04B35/44—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 aluminates
- C04B35/443—Magnesium aluminate spinel
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- C—CHEMISTRY; METALLURGY
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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
- 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
- C04B35/447—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 phosphates, e.g. hydroxyapatite
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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
- C04B2235/32—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
Abstract
A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, it is characterised in that use following steps：（1）Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder carries out dry-mixed in proportion；（2）It is granulated, molding, cylindric green body is made；（3）After 70 DEG C of dry base substrates 5 hours, green body is put into the alumina crucible that interior bottom is semicircle spherical shape, 150 DEG C are heated to the speed of 5 DEG C/min and keep the temperature 2 hours under air atmosphere, 380 DEG C are heated to the speed of 10 20 DEG C/min and keep the temperature 1 hour again, then 680 DEG C are heated to the speed of 1 DEG C/min and keeps the temperature 2 hours, finally 1150 DEG C are heated to the speed of 5 DEG C/min and keep the temperature 2 hours, room temperature then is naturally cooled to, obtains light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball.
Description
Technical field
The present invention is to provide a kind of preparation methods of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, belong to extraordinary
Ceramic materials preparation technology field.
Background technology
Porous alumionphosphate（AlPO4）- magnesium aluminate spinel（MgAl2O4) Ceramic Balls being widely used in the industrial production
It is general, catalyst carrier, high-temperature filter, chemical filler, heat preservation and refractory material etc. can be used as.As carrier of photocatalyst
With other liquid phase reactor catalyst carriers, and as in water when the adsorbent of noxious material, efficiently urged to ensure to have
Change effect and（Or）Adsorption efficiency often requires that porous ceramic ball is in suspended state in water, this just needs to prepare a kind of light
Matter porous ceramic ball.Currently, " core " of the sphere as spherical green body made of the organic matter that easily burning is lost mainly is used both at home and abroad,
Then spherical organic " core " is removed by being burnt into, to prepare a kind of suspensible porous ceramics hollow ball.The disadvantages of this method
It is：Molding is more difficult, and during organic matter burns and loses, and easily leads to ceramics cracking or destroys, reduces the yield rate of product；This
Outside, this technical process is more complex, and cost is higher, deficiency in economic performance, environment easy to pollute.In order to overcome above-mentioned problem, the present invention
Provide a kind of efficient, simple, safe and reliable, easily operated, low-cost light porous aluminum phosphate-magnesium aluminate spinel
The preparation method of Ceramic Balls.
Invention content
The technology of the present invention provides a kind of efficient, simple, safe and reliable, easily operated, low-cost light porous phosphoric acid
The preparation method of aluminium-magnesium-aluminum spinel ceramic ball, technical solution are：
A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, it is characterised in that use following step
Suddenly：（1）Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder is 2 according to mass ratio：1：
3.11：0.03 ratio carries out dry-mixed；Wherein, 50 wt% lithias, the sodium oxide molybdena of 30 wt% and 20 wt% are contained in frit
Silica；（2）The poly-vinyl alcohol solution of a concentration of 8 wt% is added as binder, the additive amount of binder is the total matter of blank
The 5% of amount；Then it is granulated, is molded, cylindric green body is made；（3）After 70 DEG C of dry base substrates 5 hours, green body is put into interior bottom
Portion is to heat to 150 DEG C in the alumina crucible of semicircle spherical shape with the speed of 5 DEG C/min under air atmosphere and keep the temperature
2 hours, then heat to 380 DEG C with the speed of 10-20 DEG C/min and keep the temperature 1 hour, then with the speed of 1 DEG C/min
Degree heats to 680 DEG C and keeps the temperature 2 hours, finally heats to 1150 DEG C with the speed of 5 DEG C/min and keeps the temperature 2
Hour, room temperature is then naturally cooled to, light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball is obtained.
A kind of preparation method of the light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, it is characterised in that：Step
（1）In magnesium aluminate spinel powder and the average grain diameter of oxide powder be all 0.6 micron, aluminium dihydrogen phosphate powder average particle size is
0.5 micron, the average grain diameter of frit powder is 0.7 micron.
A kind of preparation method of the light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, it is characterised in that：Step
（2）In molding refer to powder carry out dry-pressing formed, briquetting pressure 10-25MPa.
Description of the drawings
Fig. 1 is the photograph that light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball prepared by the technology of the present invention floats in water
Piece；As we can see from the figure：Aluminum phosphate-magnesium-aluminum spinel ceramic ball floats in water, illustrates aluminum phosphate-magnesium aluminate spinel pottery
The bulk density of porcelain ball is less than the density of water, i.e., the material that prepared by the technology of the present invention belongs to light porous ceramic material.
The principle of this technology invention is as follows：
Using aluminium dihydrogen phosphate it is fusible at a lower temperature be liquid, then at relatively high temperatures again solidifiable property
It can so that green body is spontaneously formed in sintering process as sphere, and concrete principle is as follows：Aluminium dihydrogen phosphate be heated to 150 DEG C,
After heat preservation 2 hours, aluminium dihydrogen phosphate is changed into as liquid, is then heated rapidly to 380 DEG C and keeps the temperature 1 hour, the purpose is to make
Various raw materials form a kind of prodigious viscous body of viscosity at such a temperature.The effect that frit is added is on the one hand can to promote raw material
Melting be a kind of prodigious viscous body of viscosity, on the other hand can also increase surface tension so that viscous physical efficiency spontaneously form for
Sphere.It is heated slowly to during 680 DEG C, aluminium dihydrogen phosphate is gradually solidified as solid；In temperature-rise period, aluminium dihydrogen phosphate meeting
It is decomposed into aluminum phosphate, vapor and phosphoric acid, the phosphoric acid of generation can be reacted with magnesium carbonate generates aluminum phosphate-magnesium aluminate spinel, and water
Steam and carbon dioxide etc. have the function of pore-forming, can thus prepare light porous aluminum phosphate-magnesium-aluminum spinel ceramic.
Specific implementation mode
Embodiment 1
Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder is 2 according to mass ratio：1：
3.11：0.03 ratio carries out dry-mixed；Wherein, 50 wt% lithias, the sodium oxide molybdena of 30 wt% and 20 wt% are contained in frit
Silica；The average grain diameter for controlling magnesium aluminate spinel powder and oxide powder is 0.6 micron, and biphosphate aluminium powder is averaged grain
Diameter is 0.5 micron, and the average grain diameter of frit powder is 0.7 micron；The poly-vinyl alcohol solution of a concentration of 8 wt% is added as bonding
Agent, the additive amount of binder are the 5% of blank gross mass；Then it is granulated, is dry-pressing formed with 10MPa pressure, cylindric base is made
Body；After 70 DEG C of dry base substrates 5 hours, green body is put into the alumina crucible that interior bottom is semicircle spherical shape, in air atmosphere
Under heat to 150 DEG C with the speed of 5 DEG C/min and keep the temperature 2 hours, then heated to the speed of 10 DEG C/min
Then 380 DEG C and 1 hour of heat preservation heat to 680 DEG C with the speed of 1 DEG C/min and keep the temperature 2 hours, finally with 5
DEG C/speed of min heats to 1150 DEG C and keeps the temperature 2 hours, room temperature is then naturally cooled to, is obtained light porous
Aluminum phosphate-magnesium-aluminum spinel ceramic ball.The bulk density that porous ceramic ball is measured with Archimedes method is 0.92 g/cm3, open
The porosity is 37%.The crystalline phase that Ceramic Balls are measured with XRD analysis is aluminum phosphate-magnesium aluminate spinel.
Embodiment 2
Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder are 2 according to mass ratio：1：
3.11：0.03 ratio carries out dry-mixed；Wherein, 50 wt% lithias, the sodium oxide molybdena of 30 wt% and 20 wt% are contained in frit
Silica；The average grain diameter for controlling magnesium aluminate spinel powder and oxide powder is 0.6 micron, and biphosphate aluminium powder is averaged grain
Diameter is 0.5 micron, and the average grain diameter of frit powder is 0.7 micron；The poly-vinyl alcohol solution of a concentration of 8 wt% is added as bonding
Agent, the additive amount of binder are the 5% of blank gross mass；Then it is granulated, is dry-pressing formed with 20MPa pressure, cylindric base is made
Body；After 70 DEG C of dry base substrates 5 hours, green body is put into the alumina crucible that interior bottom is semicircle spherical shape, in air atmosphere
Under heat to 150 DEG C with the speed of 5 DEG C/min and keep the temperature 2 hours, then heated to the speed of 15 DEG C/min
Then 380 DEG C and 1 hour of heat preservation heat to 680 DEG C with the speed of 1 DEG C/min and keep the temperature 2 hours, finally with 5
DEG C/speed of min heats to 1150 DEG C and keeps the temperature 2 hours, room temperature is then naturally cooled to, is obtained light porous
Aluminum phosphate-magnesium-aluminum spinel ceramic ball.The bulk density that porous ceramic ball is measured with Archimedes method is 0.93 g/cm3, open
The porosity is 38%.The crystalline phase that Ceramic Balls are measured with XRD analysis is aluminum phosphate-magnesium aluminate spinel.
Embodiment 3
Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder are 2 according to mass ratio：1：
3.11：0.03 ratio carries out dry-mixed；Wherein, 50 wt% lithias, the sodium oxide molybdena of 30 wt% and 20 wt% are contained in frit
Silica；The average grain diameter for controlling magnesium aluminate spinel powder and oxide powder is all 0.6 micron, and biphosphate aluminium powder is average
Grain size is 0.5 micron, and the average grain diameter of frit powder is 0.7 micron；The poly-vinyl alcohol solution of a concentration of 8 wt% is added as viscous
Agent is tied, the additive amount of binder is the 5% of blank gross mass；Then it is granulated, is dry-pressing formed with 25 MPa pressure, being made cylindric
Green body；After 70 DEG C of dry base substrates 5 hours, green body is put into the alumina crucible that interior bottom is semicircle spherical shape, in air gas
150 DEG C are heated to the speed of 5 DEG C/min under atmosphere and keep the temperature 2 hours, then heated to the speed of 20 DEG C/min
Then 380 DEG C and 1 hour of heat preservation heat to 680 DEG C with the speed of 1 DEG C/min and keep the temperature 2 hours, finally with 5
DEG C/speed of min heats to 1150 DEG C and keeps the temperature 2 hours, room temperature is then naturally cooled to, is obtained light porous
Aluminum phosphate-magnesium-aluminum spinel ceramic ball.The bulk density that porous ceramic ball is measured with Archimedes method is 0.94g/cm3, open gas
Porosity is 33 %.The crystalline phase that Ceramic Balls are measured with XRD analysis is aluminum phosphate-magnesium aluminate spinel.
Claims (2)
1. a kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball, it is characterised in that use following steps：
（1）Magnesium aluminate spinel powder, alumina powder, biphosphate aluminium powder, frit powder is 2 according to mass ratio：1：3.11：
0.03 ratio carries out dry-mixed；Wherein, the titanium dioxide containing 50 wt% lithias, the sodium oxide molybdena and 20 wt% of 30 wt% in frit
Silicon；The average grain diameter for controlling magnesium aluminate spinel powder and alumina powder is 0.6 micron, and aluminium dihydrogen phosphate powder average particle size is
0.5 micron, the average grain diameter of frit powder is 0.7 micron；（2）The poly-vinyl alcohol solution of a concentration of 8 wt% is added as bonding
Agent, the additive amount of binder are the 5% of blank gross mass；Then it is granulated, is molded, cylindric green body is made；（3）In 70 DEG C of dryings
After green body 5 hours, green body is put into the alumina crucible that interior bottom is semicircle spherical shape, with 5 DEG C/min's under air atmosphere
Speed heats to 150 DEG C and keeps the temperature 2 hours, then heats to 380 DEG C with the speed of 10-20 DEG C/min and keep the temperature 1
Then a hour is heated to 680 DEG C with the speed of 1 DEG C/min and keeps the temperature 2 hours, finally added with the speed of 5 DEG C/min
Heat is warming up to 1150 DEG C and keeps the temperature 2 hours, then naturally cools to room temperature, obtains light porous aluminum phosphate-magnalium point
Spinel ceramics ball.
2. a kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball as described in claim 1, feature
It is：Step（2）In molding refer to powder carry out dry-pressing formed, briquetting pressure 10-25MPa.
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| CN201610283625.2A CN105948782B (en) | 2016-05-04 | 2016-05-04 | A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball |
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| CN201610283625.2A CN105948782B (en) | 2016-05-04 | 2016-05-04 | A kind of preparation method of light porous aluminum phosphate-magnesium-aluminum spinel ceramic ball |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091764A (en) * | 1993-02-19 | 1994-09-07 | 胡小弟 | The high temperature compound binding agent |
| CN1210839A (en) * | 1997-09-05 | 1999-03-17 | 中国科学院新疆物理研究所 | Microwave sintering insulator for electronic oxide ceramic |
| CN102503510A (en) * | 2011-11-03 | 2012-06-20 | 杭州中亚新材料科技有限公司 | Production process for firing alumina foamed ceramic filter board in roller kiln |
| CN105481464A (en) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | Porous refractory material and preparation method thereof |
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- 2016-05-04 CN CN201610283625.2A patent/CN105948782B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091764A (en) * | 1993-02-19 | 1994-09-07 | 胡小弟 | The high temperature compound binding agent |
| CN1210839A (en) * | 1997-09-05 | 1999-03-17 | 中国科学院新疆物理研究所 | Microwave sintering insulator for electronic oxide ceramic |
| CN102503510A (en) * | 2011-11-03 | 2012-06-20 | 杭州中亚新材料科技有限公司 | Production process for firing alumina foamed ceramic filter board in roller kiln |
| CN105481464A (en) * | 2014-09-19 | 2016-04-13 | 青岛百键城环保科技有限公司 | Porous refractory material and preparation method thereof |
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