CN1048236C - Method for manufacture of high-temp ceramic filter - Google Patents

Method for manufacture of high-temp ceramic filter Download PDF

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Publication number
CN1048236C
CN1048236C CN92109540A CN92109540A CN1048236C CN 1048236 C CN1048236 C CN 1048236C CN 92109540 A CN92109540 A CN 92109540A CN 92109540 A CN92109540 A CN 92109540A CN 1048236 C CN1048236 C CN 1048236C
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China
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hour
rates
water
heat
raised
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Expired - Fee Related
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CN92109540A
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Chinese (zh)
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CN1083032A (en
Inventor
胡小弟
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Individual
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Priority to CN92109540A priority Critical patent/CN1048236C/en
Publication of CN1083032A publication Critical patent/CN1083032A/en
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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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
    • 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
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms

Abstract

Mullite is used as a base, and main materials of aluminum oxide, zircon sand, aluminum phosphate, etc. are mixed; all the materials are processed in a superfine mode. An auxiliary material and water are added, mixed and ground into material slurry, and the material slurry is defoamed. Open hole soft foam plastics are used as mould materials and are dipped into slurry, extruded, dried, and put into a furnace, and the furnace is sintered into a high temperature filter. The high temperature filter can be used at 1620 DEG C, and can be used for the filtration of molten metal, high temperature gas and various kinds of corrosion liquid. The formulation components of the high temperature filter can be changed according to the characteristics of a filtering substance to enhance corrosion resistance.

Description

The manufacture method of high-temp ceramic filter
The present invention relates to a kind of manufacture method of high-temp ceramic filter, belong to the industrial ceramics field.
About porcelain filter, the foreign literature report is more, has been applied to industrial circle in Japan and the United States two countries, and use temperature is in 1500 ℃; Still be in the development stage at home, not seeing has use temperature to be higher than more than 1600 ℃, the similar preferably technology of technical and economic performance.Industrial castability for the raising metal need be filtered metal melting, casts again, as temperature of melt metal above 1500 ℃, the strainer of generally selecting for use silicon carbide, silicon nitride to make because of these two kinds of material value costlinesses, causes the use of high-temperature filter to be restricted.
Task of the present invention is that a kind of heatproof of development is more than 1600 ℃, the porcelain filter of inexpensive practicality, adopt mullite to make base mateiral, add main raw material(s)s such as aluminum oxide, zircon sand, aluminum phosphate, other adds other subsidiary material, through super-fine processing, make slurry, with the perforate flexible foam plastic is mould, by effective process means control, makes the high-temp ceramic filter that conforms with such use.
Below be content of the present invention:
1, cooperation ratio and proportioning process:
Mullite 67.5%
Aluminum oxide 14.25-15.27%
Zircon sand 11.87-13.13%
Aluminum phosphate 4.75-5.25%
More than four kinds of main raw material sums be 100%, based on main raw material, add five kinds of auxiliary materials again.
Water reducer: 0.2-0.3%
Soda ash: 0.1-0.2%
Methylcellulose gum: 1.0-2.0%
Water glass: 0.05-0.1%
Water: 45-60%
To starting material used in the above prescription, require as follows: mullite can be the goods of sintering or electric smelting, wherein impurity Na 2, K 2O and Fe 2O 3Total amount must not surpass 1.5%, carries out superfine grinding, and is levigate to particle diameter Φ 1-15 μ m; The commercial product of methylcellulose gum is a solid, is mixed with to leave standstill more than 4 hours after 20% the aqueous solution stirs to use again; The PH of water＞7.5.
Take by weighing raw material by above formula range and requirement, mix, grind, slip is made in vacuum-treat.
2, mould is prepared and moulding
The perforate flex foam is cut into suitable size with product, is that the basic solution of 7.5-8.5 soaked 20-30 minute at 50-60 ℃ with PH, cleans with clear water, and the exsiccant porous plastics is flooded in slip, and extruding blows off unnecessary slip with pressurized air repeatedly;
(3) oven dry, shove charge and sintering
Put work in-process into the thermostatic drying chamber oven dry, bake out temperature is 110 ℃-130 ℃, by products thickness, and each cm thick oven dry 20-30 minute, after the oven dry, shove charge sintering, control heat-up rate, the highest sintering temperature is 1620 ℃, this temperature insulation 4 hours, reduces to room temperature then.
Below be the embodiment of the invention:
The invention process repeatedly through selecting optimum formula is:
(1) mullite: 67.5%
(2) aluminum oxide: 15%
(3) zirconium English sand: 12.5%
(4) aluminum phosphate: 5%
Add following auxiliary material again by above-mentioned four kinds of raw material total amounts
(5) water reducer: 0.3%
(6) soda ash: 0.2%
(7) methylcellulose gum: 1.0-2.0%
(8) water glass: 0.05%
(9) water: 50%
The admixtion addition sequence is followed successively by (9) the seven kinds of raw materials in (1) (2) (3) (4) (5) (6), adds simultaneously, starts ball mill grinding, when total milling time is more than half, adds (7) (8) again and together grinds, and mill efficiency is the highest like this.
Soft foam is moulded mould of plastics and can be adopted urethane foam to make, and the soaking paste extruding back rate of interspacing is 80-90%, and is best in quality.
The sintering shove charge is that 1-1.5cm is thick in every goods, and piling is no more than 6 layers, and it is rebasing that lowermost layer is put a burned finished product, inhomogeneous because bottom is heated, the most easy to crack, and bottom becomes waste product in case cracking with regard to overbalance, causes whole buttress distortion.
Sintering process system most preferred embodiment is as follows:
The room temperature shove charge
Be raised to 60 ℃/hour of 500 ℃ of heat-up rates from room temperature
Be raised to 120 ℃/hour of 1100 ℃ of heat-up rates from 500 ℃
Be raised to 60 ℃/hour of 1300 ℃ of heat-up rates from 1100 ℃
Be raised to 1620 ℃ from 1300 ℃, 120 ℃/hour of heat-up rates,
1620 ℃ of insulations 4 hours
Drop to 150 ℃/hour of 1100 ℃ of cooling rates from 1620 ℃,
Drop to 60 ℃/hour of room temperature cooling rates from 1100 ℃.
Advantage of the present invention and effect are as follows:
(1) filter of producing with above-mentioned process can bear 1620 ℃ high temperature, can Be used for the filtration of motlten metal, can eliminate or reduce being mingled with of foundry goods, pore, thereby improve Product quality and qualification rate. Can be used for automobile engine cylinder body and various precision casting.
(2) for the filtration of various high-temperature gases, can improve the thermal efficiency of working machine, reduce The discharging of solids is conducive to protection of the environment, as being used for the unpowered of boiler and reducing power and remove Dirt.
(3) be used for the filtration of multiple corrosive liquids, and can be according to the character that is filtered thing, Improve prescription, to improve corrosion resistance.
(4) calculate from economic indicator, the per kilogram mullite is worth ten yuan, and the per kilogram carbonization Silicon or silicon nitride are worth 400 yuan, and 1 kilogram of goods cost differs from 390 yuan.

Claims (3)

1, a kind of manufacture method of high-temp ceramic filter is characterized in that may further comprise the steps:
(1) formula range and proportioning process (by weight)
Mullite: 67.5%
Aluminum oxide: 14.25-15.75%
Zirconium English sand: 11.87-13.13%
Aluminum phosphate: 4.75-5.25%
More than four kinds of raw material sums be 100%, be that the basis adds 5 kinds of auxiliary materials again with the main raw material,
Water reducer: 0.2-0.3%
Soda ash: 0.1-0.2%
Methylcellulose gum: 1.0-2.0%
Water glass: 0.05-0.1%
Water: 45-60%
Take by weighing raw material by above formula range, slip is made in mixing, grinding, vacuum-treat;
(2) mould is prepared and moulding
The perforate flex foam is cut into suitable size with product, is that the basic solution of 7.5-8.5 soaked 20-30 minute at 50-60 ℃ with PH, cleans with clear water, and the exsiccant porous plastics is flooded in slip, and extruding blows off unnecessary slip with pressurized air repeatedly;
(3) oven dry, shove charge and sintering
Put work in-process into the thermostatic drying chamber oven dry, bake out temperature is 110 ℃-130 ℃, by products thickness, and each cm thick oven dry 20-30 minute, after the oven dry, shove charge sintering, control heat-up rate, the highest sintering temperature is 1620 ℃, this temperature insulation 4 hours, reduces to room temperature then.
2, the manufacture method of pyroceramic strainer according to claim 1 is characterized in that described prescription (by weight) is
(1) mullite: 67.5%
(2) aluminum oxide: 15%
(3) zirconium English sand: 12.5%
(4) aluminum phosphate: 5% adds following auxiliary material again by above-mentioned four kinds of raw material total amounts
(5) water reducer: 0.3%
(6) soda ash: 0.2%
(7) methylcellulose gum: 1.0-2.0%
(8) water glass: 0.05%
(9) water: 50%
3, the manufacture method of pyroceramic strainer according to claim 1 is characterized in that described sintering process system is:
The room temperature shove charge
Be raised to 60 ℃/hour of 500 ℃ of heat-up rates from room temperature
Be raised to 120 ℃/hour of 1100 ℃ of heat-up rates from 500 ℃
Be raised to 60 ℃/hour of 1300 ℃ of heat-up rates from 1100 ℃
Be raised to 1620 ℃ from 1300 ℃, 120 ℃/hour of heat-up rates,
1620 ℃ of insulations 4 hours
Drop to 150 ℃/hour of 1100 ℃ of cooling rates from 1620 ℃,
Drop to 60 ℃/hour of room temperature cooling rates from 1100 ℃.
CN92109540A 1992-08-21 1992-08-21 Method for manufacture of high-temp ceramic filter Expired - Fee Related CN1048236C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN92109540A CN1048236C (en) 1992-08-21 1992-08-21 Method for manufacture of high-temp ceramic filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN92109540A CN1048236C (en) 1992-08-21 1992-08-21 Method for manufacture of high-temp ceramic filter

Publications (2)

Publication Number Publication Date
CN1083032A CN1083032A (en) 1994-03-02
CN1048236C true CN1048236C (en) 2000-01-12

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Application Number Title Priority Date Filing Date
CN92109540A Expired - Fee Related CN1048236C (en) 1992-08-21 1992-08-21 Method for manufacture of high-temp ceramic filter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1662286B (en) * 2002-05-31 2010-04-28 南方化学高科陶瓷美国公司 Fiber reinforced filter for molten metal filtration and method for producing such filters

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101186514B (en) * 2006-11-17 2011-06-08 鞍钢集团耐火材料公司 Internal combustion type infrared radiation refractory material and producing method thereof
CN101927105B (en) * 2010-01-28 2012-06-27 湖南金联星特种材料股份有限公司 Foamed ceramic aluminum melt filter tube, manufacturing method and filtering device
CN102173856A (en) * 2010-12-20 2011-09-07 中钢集团洛阳耐火材料研究院有限公司 Mullite ceramic foam filter for casting and preparation method thereof
CN102173857A (en) * 2010-12-20 2011-09-07 中钢集团洛阳耐火材料研究院有限公司 Preparation method of mullite mesh ceramic foam filter
DE102012113073A1 (en) * 2012-12-22 2014-07-10 Ask Chemicals Gmbh Molding mixtures containing aluminum oxides and / or aluminum / silicon mixed oxides in particulate form
CN104211379A (en) * 2013-05-29 2014-12-17 贵阳市新航铸造材料科技开发有限公司 Manufacturing method of high temperature ceramic filter
CN114262237B (en) * 2022-02-28 2022-05-10 北京市一滴水环保科技有限公司 Light microporous ceramic filter material and preparation method thereof, and ceramic particles for water treatment and filtration and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1003227B (en) * 1985-10-14 1989-02-08 任守信 The driving device of walking machine and steering unit
CN1032932A (en) * 1987-11-03 1989-05-17 艾尔坎国际有限公司 But the porous-film of sintering refractory metal oxides or silica and its method for making
CN1017607B (en) * 1988-06-22 1992-07-29 帝国化学工业公司 Polymeric films and its preparation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1003227B (en) * 1985-10-14 1989-02-08 任守信 The driving device of walking machine and steering unit
CN1032932A (en) * 1987-11-03 1989-05-17 艾尔坎国际有限公司 But the porous-film of sintering refractory metal oxides or silica and its method for making
CN1017607B (en) * 1988-06-22 1992-07-29 帝国化学工业公司 Polymeric films and its preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1662286B (en) * 2002-05-31 2010-04-28 南方化学高科陶瓷美国公司 Fiber reinforced filter for molten metal filtration and method for producing such filters

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Publication number Publication date
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C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
OR01 Other related matters
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee