CN102992781A - Casting-use straight-hole ceramic filter and preparation method thereof - Google Patents
Casting-use straight-hole ceramic filter and preparation method thereof Download PDFInfo
- Publication number
- CN102992781A CN102992781A CN2011102718130A CN201110271813A CN102992781A CN 102992781 A CN102992781 A CN 102992781A CN 2011102718130 A CN2011102718130 A CN 2011102718130A CN 201110271813 A CN201110271813 A CN 201110271813A CN 102992781 A CN102992781 A CN 102992781A
- Authority
- CN
- China
- Prior art keywords
- straight
- ceramic filter
- preparation
- clay
- bore ceramic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Filtering Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses materials used for preparing a casting-use straight-hole ceramic filter, a straight-hole ceramic filter, and a preparation method thereof. The materials used for preparing the casting-use straight-hole ceramic filter comprise, by weight, 50-70 parts of cured flint clay, 20-40 parts of aluminum oxide, and 3-10 parts of clay. The straight-hole ceramic filter preparation method comprises the steps that: a honeycomb ceramic molding technology is adopted, wherein the materials are sufficiently mixed with a binder and a water retaining agent; a plasticizer, a lubricant and water are added; and processes such as kneading, rough mixing, aging, refining, molding, shaping, drying, cutting, soot blowing, and sintering are carried out, such that the straight-hole ceramic filter is prepared. The costs of the materials used for preparing the straight-hole ceramic filter are low; mullite corundum is synthesized during the sintering process; and production cost is reduced.
Description
Technical field
The present invention relates to silicate material, industrial ceramics field, particularly a kind of straight-bore ceramic filter, the material for preparing this straight-bore ceramic filter and manufacture method for the preparation of filtering impurity in the metal liquids such as molten iron, aluminium water in the casting technique.
Background technology
At present, the filtration unit that is used for the molten metal purification is porcelain filter, and it can effectively be intercepted and captured the detrimental impurity in the molten metal and make molten metal become laminar flow by turbulent flow, plays to purify and the homogeneous effect.Porcelain filter can be divided into ceramic foam filter and straight-bore ceramic filter according to structure.Wherein, straight-bore ceramic filter is the new ceramics strainer of developing in recent years, has the characteristics such as the outward appearance regularity is good, strainability is good.Straight-bore ceramic filter is made after normally adopting the mullite of finished product to mix with other compositions, and wherein mullite is usually with synthetic such as sintering process or electric smelting methods, so price is relatively expensive.In addition, although mullite is a kind of good high temperature material, its cold conditions structural strength is lower, and is therefore frangible.
Chinese patent literature 95226135.9 discloses a kind of honeycomb ceramic cast iron filter.This honeycomb ceramic cast iron filter matrix is prepared from as raw material adopts the ceramic honey comb forming technique take mullite and trichroite mixing material, and external form is square, and pass is square hole, and the aperture is 2-3mm, the thick 0.3-0.6mm of muscle.This utility model percentage of open area is high, and effective filtration area is large, and pouring flow rate is large, and can effectively reduce eddy current, makes molten iron injection balance, evenly, Effective Raise purity and the quality of foundry goods.But mullite and trichroite that this utility model adopts are synthesis material, and cost is higher, and external form, pass are single.
Summary of the invention
The present invention aims to provide a kind of preparation method of straight-bore ceramic filter, to solve the high technical problem of straight-bore ceramic filter preparation cost in the prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of for the preparation of the material of casting with straight-bore ceramic filter, this material comprises the component of following weight part: ripe flint clay 50-70 weight part; Aluminum oxide 20-40 weight part; And clay 3-10 weight part.
Further, this material also comprises the talcum of 2-8 weight part.
Further, the granularity of ripe flint clay＜200 orders, the granularity of aluminum oxide＜325 orders, the granularity of clay＜500 orders, the granularity of talcum＜500 orders.
Further, Al in the ripe flint clay
2O
3Content 〉=42%, Al in the aluminum oxide
2O
3Content 〉=98%, Al in the clay
2O
3Content 〉=30%.
According to a further aspect in the invention, a kind of preparation method of straight-bore ceramic filter is provided, with above-mentioned each material through kneading, thick experienced, old, concise, moulding, typing, drying, cut, blow ash, firing process makes straight-bore ceramic filter, wherein, kneading step comprises: material is added binding agent, soybean oil and/or hydraulic efficiency oil and water mixes, the adding total amount of soybean oil and/or hydraulic efficiency oil is the 3%-8% of material weight.
Further, drying step is that to adopt 60 ℃-120 ℃ box drying room that base substrate is carried out circulation warming air-dry dry.
In accordance with a further aspect of the present invention, provide a kind of casting straight-bore ceramic filter, adopted above-mentioned preparation method to make, this straight hole strainer comprises the chemical composition of following quality percentage composition: Al
2O
355%-75%; SiO
220%-40%; MgO0.5%-3%; And surplus impurity.
Further, straight-bore ceramic filter comprises the crystalline phase component of following quality percentage composition: mullite 60%-80%; Corundum 15%-35%; Glassy phase 5%-15%; And quartzy 0-5%.
Use the material for the preparation of straight-bore ceramic filter of the present invention and prepare straight-bore ceramic filter, lower cost for material need not to adopt synthetic materials, has reduced production cost.The advantages such as in addition, owing to having adopted material provided by the invention, sintering range is wide in the preparation process of straight-bore ceramic filter, and sintering process is easy to control, and the straight-bore ceramic filter that makes has anti-suddenly cold and hot, and the cold and hot physical strength is large.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the present invention can make up mutually.Describe the present invention in detail below in conjunction with embodiment.
In a kind of typical embodiment of the present invention, comprise the component of following weight part for the preparation of the material of straight-bore ceramic filter: ripe flint clay 50-70 weight part; Aluminum oxide 20-40 weight part; And clay 3-10 weight part, this material through kneading, thick experienced, old, concise, moulding, typing, drying, cut, blow ash, firing process makes straight-bore ceramic filter.Material substitution provided by the invention existing mullite, those skilled in the art adopt existing processing step can prepare straight-bore ceramic filter.This lower cost for material need not to adopt synthetic materials, has reduced production cost.In addition, data can draw by experiment, owing to having adopted material provided by the invention, sintering range is wide in the preparation process of straight-bore ceramic filter, can finish through high temperature single sintering sintering, the advantages such as process is easy to control, and the straight-bore ceramic filter that makes has anti-suddenly cold and hot, and the cold and hot physical strength is large.
The straight-bore ceramic filter that the present invention makes is because the material of preparation straight-bore ceramic filter comprises the ripe flint clay of 50-70 weight part; The aluminum oxide of 20-40 weight part; And the clay of 3-10 weight part, through above-mentioned procedure of processing, material generation chemistry and physical change in the raw material are so that the straight-bore ceramic filter that makes comprises the chemical composition of following quality percentage composition: Al
2O
355%-75%; SiO
220%-40%; MgO 0.5%-3%; And surplus impurity; The quality percentage composition of measuring simultaneously its crystalline phase component is: mullite 60%-80%, corundum 15%-35%, glassy phase 5%-15%, and quartzy 0-5%.Because mullite has good high-temperature mechanics and high temperature thermal property, have that thermal structure intensity is high, high temperature creep rate is low, thermal expansivity is low, chemical resistance of concrete is strong, the thermal shock resistance high; Corundum has the characteristics such as the cold and hot structural strength is high, chemical resistance of concrete is strong.In conjunction with the two performance advantage, the straight-bore ceramic filter of preparation has anti-suddenly cold and hot, and the cold and hot physical strength is large, heat shock resistance power is strong, slag resistance is strong, and the loading point of inversion is high, and has high chemical stability (even not being dissolved in hydrofluoric acid) and the extremely strong characteristics such as resistance to chemical corrosion.
In a kind of typical embodiment of the present invention, also comprise the talcum of 2-8 weight part for the preparation of the material of straight-bore ceramic filter.What the talcum adding was played is the effect of sintering agent, and when alumina content is higher, firing temperature will improve, and to burn till cost and will guarantee suitable contraction ratio in order to reduce, and can add an amount of talcum to guarantee that firing temperature is stable and contraction ratio is consistent.In other embodiments of the present invention, can add according to actual needs other additives, for example, add glycerine for the water-retentivity that increases pug and make water-holding agent.
Preferably, the granularity of ripe flint clay＜200 orders, the granularity of aluminum oxide＜325 orders, the granularity of clay＜500 orders, the granularity of talcum＜500 orders.After the granularity of material each component reaches this kind requirement, can further improve the cold-hot pressure intensity of product and the thermal shock resistance of product.
Preferably, Al in the ripe flint clay
2O
3Content 〉=42%, Al in the aluminum oxide
2O
3Content 〉=98%, Al in the clay
2O
3Content 〉=30%, have this kind Al
2O
3The product that the material produce of content goes out, refractoriness is higher, can reach the requirement of filtering molten iron (1300-1500 ℃).
The present invention also provides a kind of above-mentioned straight-bore ceramic filter that any is prepared from for the preparation of the material of straight-bore ceramic filter that adopts, above-mentioned materials through kneading, thick experienced, old, concise, moulding, typing, drying, cut, blow ash, firing process makes described straight-bore ceramic filter.Wherein, kneading step comprises: material is added binding agent, softening agent, lubricant and water mix.Softening agent, lubricant all can be selected the conventional reagent that uses in this area, such as PVA, tung oil etc.Preferably, add soybean oil and/or hydraulic efficiency oil as softening agent and lubricant, be about to material adding binding agent, soybean oil and/or hydraulic efficiency oil and water and mix, the adding total amount of soybean oil and/or hydraulic efficiency oil is the 3%-8% of material weight.The add-on of binding agent is the 6%-11% of material weight, has enough intensity to be suitable for the split requirement of later process after drying to guarantee the base substrate after the moulding.Preferably, binding agent is one or more the combination in hydroxypropylcellulose, methylcellulose gum or the tung oil, adopts this binding agent to have the high advantage of dry base substrate intensity.The add-on of water is the 17%-22% of material weight, so that the product defects that moulding process occurs is few, product percent of pass is high.
In a kind of typical embodiment of the present invention, adopt extruding-out process to make base substrate.Adopt the straight-bore ceramic filter strainability of extruding-out process preparation good, production cost is lower, also can design circular hole, delthyrium, square hole, hexagon ring diplodal structure with high opening rate.
Preferably, fixating shape step is to adopt box microwave oven that base substrate is finalized the design, and drying step is to adopt 60 ℃ of-120 ℃ of circulation warm braws of box drying room that base substrate is carried out drying, and the circulation warm braw can make the base substrate homogeneous heating, is unlikely to local heating, the base substrate burning.
Burning till step is that base substrate was fired 1-2 hour in 1350 ℃-1420 ℃ pushed bat kiln.Because the material that the present invention adopts is the abundant material of Synthesis not, so its sintering range is wide, can finish through high temperature single sintering sintering, sintering process is easy to control.
In an embodiment of the present invention, the straight-bore ceramic filter cross section can be square, rectangle, circle; Pass can be circular hole, elliptical aperture, delthyrium, square hole, hexagonal hole.Filter cross-section shape and pass be unitized design as required.
Embodiment 1
The straight-bore ceramic filter cross section is square, and pass is square hole, and wall thickness 0.3mm-1.5mm is adjustable, and wide 1.2mm-3.5mm is adjustable in the hole.Adopted ripe flint clay 53 weight parts of 200 mesh sieves, aluminum oxide 40 weight parts of crossing 325 mesh sieves, talcum 2 weight parts crossing clay 5 weight parts of 500 mesh sieves and cross 500 mesh sieves to be mixed into the material of 200Kg, the hydroxypropylcellulose of admixture weight 4%, ball milling 2 hours, after crossing 100 mesh sieves, the water of adding material gross weight 20%, 3% tung oil and 3% rape oil, in kneader, mediate 20min, after pug mill pugging 3 times old 18-24 hour, pug after old is selected the extrusion moulding of square square hole mould behind vacuum pugging.Extruding base substrate, to carry out circulation warming after the typing of box microwave oven in 60 ℃ of-120 ℃ of box drying rooms air-dry dry, dried base substrate cuts into respective thickness, blows behind the ash that 1420 ℃/2h burns till and namely gets the upright hole of square square hole mullite corundum porcelain filter in pushed bat kiln.
Embodiment 2
The straight-bore ceramic filter cross section is rectangle, and pass is hexagonal hole, and wall thickness 0.3mm-1.5mm is adjustable, and 2.0mm-5.0mm is adjustable for the hexagonal hole circumscribed circle diameter.Adopted ripe flint clay 65 weight parts of 200 mesh sieves, aluminum oxide 27 weight parts of crossing 325 mesh sieves, talcum 3 weight parts crossing clay 5 weight parts of 500 mesh sieves and cross 500 mesh sieves to be mixed into the material of 200Kg, Al in the ripe flint clay that wherein adopts
2O
3Content 〉=42%, Al in the aluminum oxide
2O
3Content 〉=98%, Al in the clay
2O
3Content 〉=30%.The hydroxypropylcellulose of admixture weight 4%, ball milling 2 hours, after crossing 100 mesh sieves, add the water of material gross weight 18%, 6% high quality soybean oil, in kneader, mediate 20min, after pug mill pugging 3 times old 18-24 hour, the pug after old was selected the extrusion moulding of rectangle hexagonal hole mould behind vacuum pugging.Extruding base substrate, to carry out circulation warming after the typing of box microwave oven in 60 ℃ of-120 ℃ of box drying rooms air-dry dry, dried base substrate cuts into respective thickness, blows behind the ash that 1380 ℃/2h burns till and namely gets the upright hole of rectangle hexagonal hole mullite corundum porcelain filter in pushed bat kiln.
Embodiment 3
The straight-bore ceramic filter cross section is square, and pass is circular hole, and wall thickness 0.3mm-1.5mm is adjustable, and Circularhole diameter 1.0mm-3.5mm is adjustable.Adopted aluminum oxide 22 weight parts of ripe flint clay 70 weight parts, 325 mesh sieves of 200 mesh sieves, talcum 3 weight parts crossing clay 5 weight parts of 500 mesh sieves and cross 500 mesh sieves to be mixed into the material of 200Kg, Al in the ripe flint clay that wherein adopts
2O
3Content 〉=42%, Al in the aluminum oxide
2O
3Content 〉=98%, Al in the clay
2O
3Content 〉=30%.The hydroxypropylcellulose of admixture weight 4%, ball milling 2 hours, after crossing 100 mesh sieves, add the water of material gross weight 18%, 6% hydraulic efficiency oil, in kneader, mediate 20min, after pug mill pugging 3 times old 18-24 hour, the pug after old was selected the extrusion moulding of rectangle hexagonal hole mould behind vacuum pugging.Extruding base substrate, to carry out circulation warming after the typing of box microwave oven in 60 ℃ of-120 ℃ of box drying rooms air-dry dry, dried base substrate cuts into respective thickness, blows behind the ash that 1360 ℃/2h burns till and namely gets the upright hole of square circular hole mullite corundum porcelain filter in pushed bat kiln.
The straight-bore ceramic filter that embodiment 1-3 makes detects its crystalline phase component through XRD (X-ray diffraction) method and forms result such as table one through the quality percentage composition of its each oxide compound of chemical titration.
Table one
The straight-bore ceramic filter that embodiment of the invention 1-3 makes selects material cost cheap, through the high temperature single sintering, can rush by anti-1550 ℃ of high temperature liquid irons anxious (directly), and that straight-bore ceramic filter of the prior art selects mullite to make material cost is high, and can only reach the performance index that anti-1400 ℃ of high temperature liquid irons anxious (directly) rush.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a material of using straight-bore ceramic filter for the preparation of casting is characterized in that, comprises the component of following weight part:
Ripe flint clay 50-70 weight part;
Aluminum oxide 20-40 weight part; And
Clay 3-10 weight part.
2. material according to claim 1 is characterized in that, also comprises the talcum of 2-8 weight part.
3. material according to claim 2 is characterized in that, the granularity of described ripe flint clay＜200 orders, the granularity of described aluminum oxide＜325 orders, the granularity of described clay＜500 orders, the granularity of described talcum＜500 orders.
4. material according to claim 1 is characterized in that, Al in the described ripe flint clay
2O
3Content 〉=42%, Al in the aluminum oxide
2O
3Content 〉=98%, Al in the clay
2O
3Content 〉=30%.
5. cast the preparation method who uses straight-bore ceramic filter for one kind, it is characterized in that, with each described material of claim 1-4 through kneading, thick experienced, old, concise, moulding, typing, drying, cut, blow ash, firing process makes described straight-bore ceramic filter, wherein, described kneading step comprises: described material adding binding agent, soybean oil and/or hydraulic efficiency oil and water are mixed, and the adding total amount of described soybean oil and/or hydraulic efficiency oil is the 3%-8% of described material weight.
6. preparation method according to claim 5 is characterized in that, described drying step is that to adopt 60 ℃-120 ℃ box drying room that base substrate is carried out circulation warming air-dry dry.
7. a casting straight-bore ceramic filter is characterized in that, adopts each described preparation method of claim 5-6 to make, and described straight hole strainer comprises the chemical composition of following quality percentage composition:
Al
2O
3 55％-75％；
SiO
2 20％-40％；
MgO 0.5%-3%; And surplus impurity.
8. casting straight-bore ceramic filter according to claim 7 is characterized in that, described straight-bore ceramic filter comprises the crystalline phase component of following quality percentage composition:
Mullite 60%-80%;
Corundum 15%-35%;
Glassy phase 5%-15%; And
Quartzy 0-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102718130A CN102992781A (en) | 2011-09-14 | 2011-09-14 | Casting-use straight-hole ceramic filter and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102718130A CN102992781A (en) | 2011-09-14 | 2011-09-14 | Casting-use straight-hole ceramic filter and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102992781A true CN102992781A (en) | 2013-03-27 |
Family
ID=47921969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102718130A Pending CN102992781A (en) | 2011-09-14 | 2011-09-14 | Casting-use straight-hole ceramic filter and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102992781A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261807A (en) * | 2014-09-05 | 2015-01-07 | 长兴利君过滤器材厂 | Production process and production device of honeycomb ceramic |
| CN104557061A (en) * | 2013-10-15 | 2015-04-29 | 济南圣泉倍进陶瓷过滤器有限公司 | Straight hole ceramic filter |
| CN105311874A (en) * | 2014-06-13 | 2016-02-10 | 丹佛斯动力系统有限责任两合公司 | Screen for hydraulic fluid |
| CN106693551A (en) * | 2015-11-16 | 2017-05-24 | 株式会社昌承 | High dense slot-type ceramic filter and manufacturing method thereof |
| CN111377723A (en) * | 2020-03-24 | 2020-07-07 | 洛阳中超新材料股份有限公司 | Low-cost environment-friendly corundum-mullite honeycomb ceramic heat accumulator and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198357A (en) * | 1998-03-15 | 1998-11-11 | 江苏省宜兴非金属化工机械厂 | Ceramic filtering board for separating solid from liquid and preparing process |
| WO2008001034A1 (en) * | 2006-06-30 | 2008-01-03 | Kassim Juma | Filter device for molten metal filtration |
| CN101745972A (en) * | 2008-12-05 | 2010-06-23 | 济南圣泉集团股份有限公司 | Manufacturing method of straight-bore ceramic filter and manufacturing system thereof |
| 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 |
-
2011
- 2011-09-14 CN CN2011102718130A patent/CN102992781A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198357A (en) * | 1998-03-15 | 1998-11-11 | 江苏省宜兴非金属化工机械厂 | Ceramic filtering board for separating solid from liquid and preparing process |
| WO2008001034A1 (en) * | 2006-06-30 | 2008-01-03 | Kassim Juma | Filter device for molten metal filtration |
| CN101745972A (en) * | 2008-12-05 | 2010-06-23 | 济南圣泉集团股份有限公司 | Manufacturing method of straight-bore ceramic filter and manufacturing system thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 程骥等: "过滤净化对铝青铜组织和性能的影响", 《特种制造及有色合金》, no. 6, 31 December 1992 (1992-12-31), pages 12 - 15 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104557061A (en) * | 2013-10-15 | 2015-04-29 | 济南圣泉倍进陶瓷过滤器有限公司 | Straight hole ceramic filter |
| CN104557061B (en) * | 2013-10-15 | 2018-12-14 | 济南圣泉倍进陶瓷过滤器有限公司 | Straight-bore ceramic filter |
| CN105311874A (en) * | 2014-06-13 | 2016-02-10 | 丹佛斯动力系统有限责任两合公司 | Screen for hydraulic fluid |
| US10252195B2 (en) | 2014-06-13 | 2019-04-09 | Danfoss Power Solutions Gmbh & Co. Ohg | Screen for hydraulic fluid |
| CN104261807A (en) * | 2014-09-05 | 2015-01-07 | 长兴利君过滤器材厂 | Production process and production device of honeycomb ceramic |
| CN104261807B (en) * | 2014-09-05 | 2016-05-25 | 长兴利君过滤器材厂 | A kind of ceramic honey comb production technology and process units |
| CN106693551A (en) * | 2015-11-16 | 2017-05-24 | 株式会社昌承 | High dense slot-type ceramic filter and manufacturing method thereof |
| CN111377723A (en) * | 2020-03-24 | 2020-07-07 | 洛阳中超新材料股份有限公司 | Low-cost environment-friendly corundum-mullite honeycomb ceramic heat accumulator and preparation method thereof |
| CN111377723B (en) * | 2020-03-24 | 2020-11-03 | 洛阳中超新材料股份有限公司 | Low-cost environment-friendly corundum-mullite honeycomb ceramic heat accumulator and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106145969A (en) | Composition of ceramic powders, straight-bore ceramic filter and preparation method thereof | |
| WO2018006835A1 (en) | High temperature-resistant light-weight thermal-insulating material having duel porous structure and preparation method therefor | |
| CN101638324B (en) | Light porous heat-insulating refractory material and preparation method and applications thereof | |
| CN102992781A (en) | Casting-use straight-hole ceramic filter and preparation method thereof | |
| CN102179477B (en) | Silicon-base ceramic core added with cristobalite | |
| CN105130468B (en) | A kind of flame-proof thermal insulation material and preparation method thereof | |
| CN103145439A (en) | Honeycombed porous ceramic having high thermal conductivity and ultralow expansion coefficient | |
| CN106380223A (en) | High-temperature-resistant light brick and preparation method thereof | |
| WO2013086664A1 (en) | High crystal mullite-cordierite high temperature industrial ceramic and manufacturing method thereof | |
| CN102424595B (en) | Preparation method of hard erosion resistant alumina fiberboard hearth material | |
| CN101074161B (en) | Aluminum titanate-mullite cellular ceramic and its production | |
| CN113336534A (en) | Low-thermal-expansion domestic ceramic free of lithium minerals and preparation method thereof | |
| CN102964124A (en) | High-temperature gas-solid ceramic filter tube and preparation method | |
| CN106518043B (en) | The preparation method of the siliceous bottom brick of molten tin bath of low-cost aluminum calcium | |
| CN103044065A (en) | Porous oxide ceramic heat insulating material for kilns and preparation method of porous oxide ceramic heat insulating material | |
| CN110498673A (en) | A kind of mullite crystal whisker enhancing alumina hollow ball porous ceramics preparation method | |
| CN110028303A (en) | A kind of reinforcing porcelain and preparation method thereof using the preparation of common domestic ceramics blank | |
| US6770111B2 (en) | Pollucite-based ceramic with low CTE | |
| CN103803990B (en) | Cast steel and superalloy straight-bore ceramic filter | |
| CN104557061B (en) | Straight-bore ceramic filter | |
| CN103771878B (en) | A kind of method for making of andalusite brick | |
| CN102850061A (en) | Non-sintered corundum runner brick | |
| CN102249656A (en) | Preparation method for thin-wall and low-expansion cordierite honeycomb ceramics | |
| CN102173836B (en) | Method for producing thermal insulation material with high thermal shock resistance through induction of mullite crystal seeds | |
| CN104926354A (en) | Honeycomb ceramic filter used for purifying and filtering molten metal liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130327 |