CN104557061A - Straight hole ceramic filter - Google Patents
Straight hole ceramic filter Download PDFInfo
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- CN104557061A CN104557061A CN201310480233.1A CN201310480233A CN104557061A CN 104557061 A CN104557061 A CN 104557061A CN 201310480233 A CN201310480233 A CN 201310480233A CN 104557061 A CN104557061 A CN 104557061A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to a straight hole ceramic filter for cast steel. The straight hole ceramic filter for cast steel comprises 60 percent to 80 percent of Al2O3, 10 percent to 25 percent of SiO2, 5 to 15 percent of ZrO2 and less than or equal to 1.0 percent of other alkali metal oxide. Preferably, the crystal phase composition of the straight hole ceramic filter adopts zirconium mullite corundum, a principal crystalline phase is formed of mullite and a minor crystalline phase is made of tetragonal phase zirconia, a corundum phase and a small quantity of monoclinic phase zirconium oxide, wherein the content of the zirconium oxide is 5 to 15 percent; the content of the mullite is 40 percent to 75 percent; the content of corundum is 5 percent to 50 percent; the content of a glass phase is less than or equal to 5 percent. The straight hole ceramic filter can resist to fast (straight) rushing of liquid steel with a high temperature of 1,700 DEG C without being broken and achieves an effect of purifying the liquid steel.
Description
Technical field
The bright belonging silicate material of this law, industrial ceramics field, the particularly straight-bore ceramic filter of filtrate steel impurities in water in a kind of casting technique.
Background technology
The purification of molten metal plays an important role to the mechanical property improving foundry goods, and therefore, filtering technique is particularly important in molten metal purification.Filtration unit at present for molten metal purification is porcelain filter, can effectively intercept and capture the detrimental impurity in molten metal and make molten metal become laminar flow from turbulent flow, plays purification and homogeneous effect.Porcelain filter can be divided into ceramic foam filter and straight-bore ceramic filter according to structure.The current strainer for cast steel is all ceramic foam filter, and all depends on zirconium white for the preparation of the foam filter of cast steel.Because zirconium white is a kind of rare metal oxide, although good filtration effect, fancy price seriously limits its widespread use in cast steel filtration art, just for special steel or the steel of high added value or the casting of alloy.
The research of the foam filter of the other materials outside zirconium white is had to report successively, ceramic foam filter as ZTM system, Zirconium oxide plasticizing corundum system and corundum system is applied to the research report of cast steel and superalloy, but up to now, cast steel and superalloy be current or zirconia base ceramic foam filter with strainer, and all unsuccessful batch production of other material system is used for the filtration of cast steel and superalloy.Selee company of the U.S. successively reports ZTM system (75Al
2o
317ZrO
28SiO
2) and Zirconium oxide plasticizing corundum system (65PSZ35Al
2o
3) ceramic foam filter be used for the filtration, purification of molten steel; U.S. Hi ?Tech company report Zirconium oxide plasticizing corundum system (79Al
2o
321ZrO
2) and corundum system (98Al
2o
32SiO
2) ceramic foam filter be used for the filtration, purification of molten steel; Foseco company of Britain releases the filtration, purification that Zirconium oxide plasticizing corundum (ZTA) system ceramic foam filter is used for molten steel.Moulding used foam ceramic filter development at home starts from the beginning of the eighties, Harbin University of Science and Technology in the eighties tail period go out the ceramic foam filter that molten steel within for 1650 DEG C filters, its system is Zirconium oxide plasticizing corundum system (60Al
2o
311ZrO
228SiO
20.8TiO
2), wherein Zirconium powder is toughner, and titanium dioxide agent fireclay is sintering agent, and aluminium dihydrogen phosphate is binding agent; The later stage eighties, electromechanical research designing institute in Hubei was successively proposed ZMF(ZTM system) and ZAF(Zirconium oxide plasticizing corundum system) ceramic foam filter be used for lower than the molten steel filtration within 1650 DEG C.In sum, the ceramic foam filter filtered for molten steel is containing zirconium system, and zirconia content is mostly at more than 15wt%, and zirconium white is introduced with pure zirconia powder, expensive, and use temperature is mostly lower than 1650 DEG C.Up to now, there is no the relevant report of the straight-bore ceramic filter that cast steel molten metal filters.
Straight-bore ceramic filter is the new ceramics strainer developed in recent years, there is the features such as outward appearance regularity is good, cold and hot intensity is high, thermal shock resistance good, production cost is lower, but straight-bore ceramic filter is mainly used in the contaminant filter of the low melting point metal liquid such as molten iron, aluminium alloy, copper and alloy thereof at present, not yet has related products to come out in the filtration application of the high-temperature liquid metals such as cast steel.A kind of manufacture method and manufacturing system of straight-bore ceramic filter is disclosed in Chinese patent 200810182753.3.This straight-bore ceramic filter adopts mould pressing method shaping, is only limitted to filter the low-temperature metal liquid such as cast iron.Chinese Patent Application No. 201110271813.0 describes cast iron straight-bore ceramic filter prepared by a kind of ceramic honey comb forming technique.
This area needs a kind of straight-bore ceramic filter that effectively can filter the industrial applications of cast steel liquid with low cost.
Summary of the invention
The object of the present invention is to provide a kind of ZTM corundum system straight-bore ceramic filter of low cost.This straight-bore ceramic filter is with low cost, the zirconic form being introduced through zircon corundum brick polishing tankage is introduced, material cost is cheap, by compression molding technology or utilize ceramic honey comb extrusion technology shaping, through high temperature single sintering, can to rush and not broken by resistance to 1700 DEG C of high-temperature molten steels anxious (directly), reach purification of molten steel effect.
Cast steel of the present invention and superalloy straight-bore ceramic filter have following chemical composition:
In a kind of embodiment, the crystalline phase of this straight-bore ceramic filter is composed as follows:
In further embodiment, the raw material quality per-cent that strainer adopts is:
ZrO
2the zircon corundum brick polishing tankage 45% of content>=5% ?100%
Al
2o
3the lapis amiridis 0% of content>=98% ?50%
Al
2o
3the kaolin 0% of content>=30% ?10%
Wherein at least comprise in zircon corundum brick polishing tankage, kaolin, lapis amiridis two or more, and each material composition sum is 100%.
As the improvement to aforementioned various scheme, in raw materials used, the particle diameter of zircon corundum brick polishing tankage is greater than 1000 orders; Kaolinic particle diameter is greater than 500 orders; The particle diameter of aluminum oxide is greater than 325 orders.
As the improvement to aforementioned various scheme, straight-bore ceramic filter base substrate thickness according to physical dimension size variation scope be 15 ?25mm.
As the improvement to aforementioned various scheme, the muscle of strainer is thick be 0.8 ?1.3mm, be more preferably 0.9 ?between 1.2mm.
The present invention obtains the straight-bore ceramic filter of ZTM corundum first, the molten steel that this strainer can tolerate 1700 DEG C or higher temperature impacts and not broken, there is good heat-shock resistance, and, this strainer has good filtering function, can in filtering molten steel more than 70% impurity.
Embodiment
Unless otherwise stated, term used in context of the present invention has implication given below.Other terms specifically not providing implication herein have its common implication in the art.Raw material alleged in the present invention is the general name of inorganic materials, does not comprise the organic additive added in manufacture craft.Consist of the following composition by weight according to straight hole strainer provided by the invention:
Other alkalimetal oxide above-mentioned is not introduced for specific purpose, is due to the reason containing a small amount of alkalimetal oxide in main raw material.Present invention eliminates the technical scheme containing other compositions.Contriver finds, there is its refractoriness of straight-bore ceramic filter of above-mentioned composition far above 1750 DEG C, and there is lower thermal expansivity, high-heat resistance shock resistant and stronger normal temperature, high temperature mechanical strength, 1700 DEG C of high-temperature molten steel liquid anxious (directly) punching can be tolerated and do not break.A feature of the present invention is to comprise the aluminum oxide being not less than 60%, and too low alumina content can make product glassy phase more, causes product refractoriness to decline; Too high alumina content will affect the conversion of mullite, and thermal expansivity raises, and thermal shock resistance reduces, applied at elevated temperature degradation.In addition, the straight hole strainer with this formula has acceptable cost, and the cast steel enterprise be conducive at home uses on a large scale.
As a kind of preferred implementation, straight-bore ceramic filter of the present invention has following phase composite:
In the present invention, glassy phase always exists, and because raw material is always containing alkaline metal oxide, their meetings and unsetting silicon-dioxide form eutectic compound and exists with the form of glassy phase, but amount of glassy phase is no more than 5%.
In product of the present invention, principal crystalline phase is mullite, and mullite has good high-temperature mechanics and high-temperature thermodynamics performance, has that hot strength is high, high temperature creep rate is low, thermal expansivity is low, resistance to chemical attack is strong, thermal shock resistance high; Paracrystalline phase is tetragonal phase zirconium oxide, corundum phase and a small amount of monoclinic phase zirconium white.Wherein, corundum has the features such as cold and hot intensity is high, resistance to chemical attack is strong; Along with the change of volume and shape during zirconium white generation martensitic transformation, absorb energy, slow down crack tip stress concentration, stop the expansion of crackle, thus improve the toughness of product.
In further preferred embodiment, zirconium white is introduced with the form of zircon corundum brick polishing tankage.In fields such as sheet glass, need effects on surface polished finish time prepared by zircon corundum brick, mix part abrasive substance, produce a large amount of ultrafine powder thus and form tankage, its particle diameter is often more than 1000 orders, and this patent does not get rid of other powders formed by defectiveness and the fragmentation of discarded zircon corundum brick.These tankage are used for the present invention and have following advantage, because diameter of particle is tiny, silicon oxide wherein easily reacts with aluminum oxide, mullite synthesizing at low temperatures, while inhibit abnormal grain growth due to the existence of zirconia particles.With this zircon corundum brick polishing tankage, lapis amiridis and fireclay for raw material, base substrate is prepared by compression molding or extrusion moulding mode, through the straight-bore ceramic filter of high temperature sintering synthesis ZTM corundum, this straight-bore ceramic filter consists of ZTM (ZTM) and ZTA(Zirconium oxide plasticizing corundum).Have resistance to suddenly cold and hot, cold and hot physical strength is high, and heat shock resistance power is strong, and slag resistance is strong, and loading point of inversion is high, and has the feature such as high chemical stability and extremely strong resistance to chemical corrosion.
In other embodiments, the raw material preparing straight hole strainer is except zircon corundum brick polishing tankage, and the zircon corundum of other form can also be used to give up the ball milling powder of brick, and its zirconia content and purity are far above polishing tankage; Or be made up of zircon sand, silicon-dioxide, kaolin, lapis amiridis, mullite powder etc., can according to component content need assembly is carried out to above-mentioned raw materials.
In a preferred embodiment of the invention, zircon corundum brick polishing tankage are ZrO
2the mud sediment thing of content>=5%; Aluminum oxide is Al
2o
3the high-temperature calcination aluminum oxide of content>=98%, corundum phase content>=95%; Kaolin is Al
2o
3the clay mineral of content>=30%, as purple order joint, kaolin etc., can select arbitrarily wherein one or both.
In the typical embodiment of the present invention, raw materials usedly comprise following ingredients, wherein at least comprise two or more in zircon corundum brick polishing tankage, kaolin and lapis amiridis, and each material composition sum be 100%:
ZrO
2content>=15 ?17%% zircon corundum brick polishing tankage 45% ?100%
Al
2o
3the lapis amiridis 0% of content>=98% ?50%
Al
2o
3the kaolin 0% of content>=30% ?10%.
In another exemplary embodiments of the present invention, with zircon corundum brick polishing tankage, aluminum oxide, clay main raw material, wherein provide the source of the zirconium needed for composition with zircon corundum polishing tankage, and corresponding aluminum oxide and silicon-dioxide are provided, clay provides aluminum oxide and silicon-dioxide, synthesizes zirconium oxide plasticizing mullite ceramic and Zirconium oxide plasticizing corundum ceramic in sintering process.
Preferably the particle diameter of above-mentioned raw materials is selected, such as: the particle diameter of zircon corundum brick polishing tankage is greater than 1000 orders; Kaolinic particle diameter is greater than 500 orders; The particle diameter of aluminum oxide is greater than 325 orders.Adopt the material of above-mentioned particle diameter to carry out proportioning, the mullitization in product sintering process can be promoted, improve the applied at elevated temperature performance of product.
The die press technology for forming disclosed in Chinese invention patent 200810182753.3 can be adopted to prepare strainer of the present invention, in raw materials, can also comprise appropriate water reducer, binding agent and releasing agent etc.Water reducer is one or more in sodium humate, tripoly phosphate sodium STPP, Sodium hexametaphosphate 99; Binding agent is one or more in polyvinyl alcohol, methylcellulose gum; Releasing agent is one or more in hard hydrochlorate, oil in water emulsion, emulsified olefin.Raw mineral materials and additive are invested in proportion granulation in mist projection granulating tower after wet ball grinding in ball mill, sinter at a certain temperature after adopting the formation system introduced in patent 200810182753.3 shaping and obtain straight-bore ceramic filter.
The ceramic honey comb extruding-out process that Chinese invention patent application 201110271813.0 can also be adopted to disclose prepares strainer of the present invention, also should comprise appropriate binding agent, softening agent, lubricant etc. in raw materials.Conventional binding agent comprise in Vltra tears, methylcellulose gum or tung oil one or more, but the present invention is not limited thereto, the introduction volume of binding agent be generally raw material 3% ?between 11%; Conventional softening agent comprise in PVA, tung oil, soybean oil, hydraulic efficiency oil one or more, but the present invention is not limited thereto, add-on be generally raw material 3% ?8%; Conventional lubricant comprise in soybean oil, rape oil, hydraulic efficiency oil one or more, but the present invention is not limited thereto, introduction volume be 3% ?8%.In order to prepare product of the present invention, according to known method, by each mineral by required requirement respectively ball milling sieve, then by certain predetermined proportion and appropriate binder formulation, after batch mixing, add moderate lubrication agent and 14% ?22% water mediate.Pug after kneading is shaped through thick experienceds, old, concise, shaping, box microwave, box drying room circulation warming air-dry dry, cut, blow ash, burn till and get final product.
In the present invention, base substrate thickness 15 ?25mm, preferred thickness 20 ?25mm, typical thickness is 22 and 25mm.The preferred muscle of strainer of the present invention thick 0.8 ?1.3mm, more preferably 0.9 ?between 1.2mm.Enough thickness makes product can bear 1700 DEG C of high-temperature molten steels to fling and not broken.
Base substrate after shaping is piled up in high-temperature fuel gas formula tunnel furnace, 1450 ?fire at the temperature of 1550 DEG C.
The pass of molding type straight-bore ceramic filter is circular hole, and the pass of extrusion-type straight-bore ceramic filter is circular hole, square hole, hexagonal hole.Filter cross-section shape, pass, aperture (wide), muscle are thick etc., and parameter can need unitized design according to client.
Embodiment 1:
Get the raw materials ready: zircon corundum brick polishing tankage (1000 orders, zirconia content >=12%, alumina content >=60%) 170 kilograms, lapis amiridis (325 orders, alumina content >=99%, corundum phase content >=95%) 20 kilograms, Kaolin of Suzhou (500 orders, alumina content >=30%, dioxide-containing silica >=45%) 10 kilograms, polyvinyl alcohol (PVA content >=6%) aqueous solution 10 kilograms, emulsified olefin (commercially available technical grade) 1.5 kilograms, tripoly phosphate sodium STPP (commercially available technical grade) 0.7 kilogram, add water 120 kg, ball milling 6 hours, is prepared into slip;
Press atomization granulation: adopt the press atomization granulating equipment that patent 200810182753.3 is introduced, spray press control is at 1.2MPa, and nozzle diameter 1.2mm, gained granulation material moisture controlled is 2 ~ 4%, and the tap density of granulation material is at 0.95 ~ 1.1g/cm
3;
Compression molding: above-mentioned powder is loaded Φ 50mm, and pass circular hole, in the mold cavity of aperture 2.8mm, with the compression moulding of JT-5 type hydraulic forming machine, forming pressure 4 tons, the work in-process blank density after compacting reaches 1.55g/cm
3above;
Sintering: adopt intermittent type combustion gas shuttle kiln to burn till, the highest temperature 1450 DEG C/2h burns till and obtain zirconium mullite corundum straight-bore ceramic filter;
Checking: this strainer filters test by 500mm pouring head 1650 DEG C of pyrocarbon molten steel 100Kg, and strainer is not damaged.By to molten steel composition analysis and Micro-Structure Analysis before and after cast, foreign matter content reduce 70 ?80%.The competing scanned photograph of electricity of this sample is shown in Fig. 1.
Embodiment 2:
Straight-bore ceramic filter is for being of a size of 75mm*75mm*20mm, and pass is 3.0mm*3.0mm square hole, the thick 1.0mm of muscle.Zircon corundum brick polishing tankage (particle diameter is less than 1000 orders) after ball milling is sieved, aluminum oxide (particle diameter is less than 325 orders), Kaolin of Suzhou (particle diameter is less than 500 orders) weight proportion is that the raw material of 85:10:5 is mixed into 200Kg, the Vltra tears of additional raw material weight 4%, batch mixing 2 hours, after crossing 100 mesh sieves, add the water of raw material gross weight 18%, the tung oil of 3% and the rape oil of 3%, 20min is mediated in kneader, seal after pug mill pugging 3 times old 18 ?24 hours, pug after old is after vacuum pugging, select the extrusion moulding of above-mentioned strainer corresponding mould.Extrude base substrate after box type microwave oven sizing 60 DEG C ?to carry out circulation warming in 120 DEG C of box drying rooms air-dry dry, dried base substrate cuts into respective thickness, and after blowing ash, in pushed bat kiln, 1480 DEG C/2h burns till and obtains 75mm*75mm*20mm(3.0mm*3.0mm) zirconium mullite corundum straight-bore ceramic filter.This strainer filters test by 500mm pouring head 1650 DEG C of pyrocarbon molten steel 300Kg, and strainer is not damaged.By to molten steel composition analysis and Micro-Structure Analysis before and after cast, foreign matter content reduce 70 ?80%.The competing scanned photograph of electricity of this sample is shown in Fig. 2.
Embodiment 3:
Get the raw materials ready: zircon corundum brick polishing tankage (1000 orders, zirconia content >=12%, alumina content >=60%) 190 kilograms, Kaolin of Suzhou (500 orders, alumina content >=30%, dioxide-containing silica >=45%) 10 kilograms, polyvinyl alcohol (PVA content >=6%) aqueous solution 10 kilograms, emulsified olefin (commercially available technical grade) 1.5 kilograms, tripoly phosphate sodium STPP (commercially available technical grade) 0.7 kilogram, add water 120 kg, ball milling 6 hours, is prepared into slip;
Press atomization granulation: adopt the press atomization granulating equipment that patent 200810182753.3 is introduced, spray press control is at 1.2MPa, and nozzle diameter 1.2mm, gained granulation material moisture controlled is 2 ~ 4%, and the tap density of granulation material is at 0.95 ~ 1.1g/cm
3;
Compression molding: above-mentioned powder is loaded 100mm*60*22mm, and pass circular hole, in the mold cavity of aperture 3.0mm, with the compression moulding of JT-5 type hydraulic forming machine, forming pressure 4 tons, the work in-process blank density after compacting reaches 1.55g/cm
3above;
Sintering: adopt intermittent type combustion gas shuttle kiln to burn till, the highest temperature 1480 DEG C/2h burns till and obtain zirconium mullite corundum straight-bore ceramic filter;
Checking: this strainer filters test by 500mm pouring head 1650 DEG C of pyrocarbon molten steel 300Kg, and strainer is not damaged.By to molten steel composition analysis and Micro-Structure Analysis before and after cast, foreign matter content reduce 70 ?80%.The competing scanned photograph of electricity of this sample is shown in Fig. 3.
Embodiment 4:
Straight-bore ceramic filter is 100mm*100mm*25mm, and pass is 3.3mm circular hole, the thick 1.2mm of muscle.Adopt zircon corundum brick polishing tankage (1000 orders, zirconia content >=12%, alumina content >=60%), Kaolin of Suzhou (particle diameter is less than 500 orders) weight proportion is that the raw material of 95:5 is mixed into 200Kg, the Vltra tears of additional raw material weight 4%, ball milling 2 hours, after crossing 100 mesh sieves, add the water of raw material gross weight 18%, the soybean oil of 6%, 20min is mediated in kneader, seal after pug mill pugging 3 times old 18 ?24 hours, pug after old, after vacuum pugging, selects the extrusion moulding of above-mentioned strainer corresponding mould.Extrude base substrate after box type microwave oven sizing 60 DEG C ?to carry out circulation warming in 120 DEG C of box drying rooms air-dry dry, dried base substrate cuts into respective thickness, and after blowing ash, in pushed bat kiln, 1500 DEG C/2h burns till and obtain zirconium mullite corundum straight-bore ceramic filter.This strainer filters test by 500mm pouring head 1700 DEG C of pyrocarbon molten steel 650Kg, and strainer is not damaged.By to molten steel composition analysis and Micro-Structure Analysis before and after cast, foreign matter content reduce 70 ?80%.The competing scanned photograph of electricity of this sample is shown in Fig. 4.
Some samples are prepared with typical raw material and typical preparation method herein although disclose; and achieve desired result; but those skilled in the art it is expected to; adopt other raw material also may prepare within product content of the present invention institute protection domain; even achieve and be better than technique effect of the present invention, these are all encompassed within claims limited range.
Claims (7)
1. a cast steel straight-bore ceramic filter, is characterized in that, described straight hole Filter Chemical composition is:
2. cast steel as claimed in claim 1 and superalloy straight-bore ceramic filter, it is characterized in that, described straight-bore ceramic filter crystalline phase is composed as follows:
3. cast steel straight-bore ceramic filter as claimed in claim 1, wherein, zirconia source is from the polishing tankage of zircon corundum brick, or the zircon corundum powder that block defective zircon corundum brick is formed after fragmentation.
4. cast steel straight-bore ceramic filter as claimed in claim 3, wherein, two or more in the polishing tankage of raw material selected among zirconium corundum brick, lapis amiridis, kaolin, mullite powder.
5. cast steel as claimed in claim 4 and superalloy straight-bore ceramic filter, it is characterized in that, the raw material quality per-cent of employing is:
ZrO
2the zircon corundum brick polishing tankage 45% of content>=5% ?100%
Al
2o
3the lapis amiridis 0% of content>=98% ?50%
Al
2o
3the kaolin 0% of content>=30% ?10%
Wherein at least comprise in zircon corundum brick polishing tankage, kaolin and lapis amiridis two or more, and each material composition sum is 100%.
6. cast steel straight-bore ceramic filter as claimed in claim 1, is characterized in that selecting zircon corundum brick polishing tankage as zirconium source, wherein contains zirconium white, aluminum oxide and silicon-dioxide in zircon corundum brick polishing tankage.
7. cast steel straight-bore ceramic filter as claimed in claim 1, is characterized in that, base substrate thickness 15 ?25mm, the muscle of strainer is thick be 0.8 ?1.3mm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926331A (en) * | 2015-06-19 | 2015-09-23 | 武汉科技大学 | Renewable ceramic filter for continuous casting tundish and preparation method thereof |
| CN104944984A (en) * | 2015-06-19 | 2015-09-30 | 武汉科技大学 | Ceramic filter for continuous casting tundish and method for preparing the same |
| CN109694241A (en) * | 2018-11-09 | 2019-04-30 | 长沙县新光特种陶瓷有限公司 | A kind of castable refractory |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691296A (en) * | 2009-09-24 | 2010-04-07 | 中山市华山特种陶瓷有限公司 | Zircon corundum ceramics |
| CN102992781A (en) * | 2011-09-14 | 2013-03-27 | 济南圣泉倍进陶瓷过滤器有限公司 | Casting-use straight-hole ceramic filter and preparation method thereof |
| CN103193266A (en) * | 2013-04-08 | 2013-07-10 | 王建坤 | Method for producing zirconium-aluminum composite oxide by utilizing waste zirconium-containing refractory material |
-
2013
- 2013-10-15 CN CN201310480233.1A patent/CN104557061B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691296A (en) * | 2009-09-24 | 2010-04-07 | 中山市华山特种陶瓷有限公司 | Zircon corundum ceramics |
| CN102992781A (en) * | 2011-09-14 | 2013-03-27 | 济南圣泉倍进陶瓷过滤器有限公司 | Casting-use straight-hole ceramic filter and preparation method thereof |
| CN103193266A (en) * | 2013-04-08 | 2013-07-10 | 王建坤 | Method for producing zirconium-aluminum composite oxide by utilizing waste zirconium-containing refractory material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926331A (en) * | 2015-06-19 | 2015-09-23 | 武汉科技大学 | Renewable ceramic filter for continuous casting tundish and preparation method thereof |
| CN104944984A (en) * | 2015-06-19 | 2015-09-30 | 武汉科技大学 | Ceramic filter for continuous casting tundish and method for preparing the same |
| CN109694241A (en) * | 2018-11-09 | 2019-04-30 | 长沙县新光特种陶瓷有限公司 | A kind of castable refractory |
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| Publication number | Publication date |
|---|---|
| CN104557061B (en) | 2018-12-14 |
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