CN107857577A - A kind of Al2O3‑ZrO2Base foamed ceramics and preparation method thereof - Google Patents

A kind of Al2O3‑ZrO2Base foamed ceramics and preparation method thereof Download PDF

Info

Publication number
CN107857577A
CN107857577A CN201711106562.4A CN201711106562A CN107857577A CN 107857577 A CN107857577 A CN 107857577A CN 201711106562 A CN201711106562 A CN 201711106562A CN 107857577 A CN107857577 A CN 107857577A
Authority
CN
China
Prior art keywords
zro
quality
foamed ceramics
slurry
base
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.)
Granted
Application number
CN201711106562.4A
Other languages
Chinese (zh)
Other versions
CN107857577B (en
Inventor
贾文宝
陈若愚
黑大千
汪瑜凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing University of Aeronautics and Astronautics
Original Assignee
Nanjing University of Aeronautics and Astronautics
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing University of Aeronautics and Astronautics filed Critical Nanjing University of Aeronautics and Astronautics
Priority to CN201711106562.4A priority Critical patent/CN107857577B/en
Publication of CN107857577A publication Critical patent/CN107857577A/en
Application granted granted Critical
Publication of CN107857577B publication Critical patent/CN107857577B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C04B35/10—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 aluminium oxide
    • C04B35/803—
    • 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
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/0615—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances the burned-out substance being a monolitic element having approximately the same dimensions as the final article, e.g. a porous polyurethane sheet or a prepreg obtained by bonding together resin particles
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/006—Pyrometallurgy working up of molten copper, e.g. refining
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • C22B9/023—By filtering
    • 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
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • 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
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts 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
    • 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
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts 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
    • 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
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5276—Whiskers, spindles, needles or pins
    • 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
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • 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
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9692—Acid, alkali or halogen resistance
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Filtering Materials (AREA)

Abstract

The present invention relates to a kind of Al2O3‑ZrO2Base foamed ceramics and preparation method thereof, alumina powder and Ludox are first mixed to uniform, obtained slurry I；Zirconium oxide micro mist, alumina powder, additive, lignosulfonic acid ammonium, polycarboxylate, pungent alcohol and water are mixed even, slurry II is made, polyurethane sponge is impregnated in slurry I under vacuum condition, starches to obtain Al using compressed air spraying or centrifugal drying2O3‑ZrO2The prefabricated green compact of base foamed ceramics；With slurry II to Al2O3‑ZrO2The prefabricated green compact of base foamed ceramics carry out vacuum impregnation, and compressed air spraying or centrifugal drying are starched and toast to obtain Al2O3‑ZrO2Base foamed ceramics base substrate；Al is incubated to obtain under certain condition2O3‑ZrO2Base foamed ceramics.Present invention process is simple, cost is low, prepared foamed ceramics high mechanical strength, good thermal shock stability, has good adsorptivity, machinery obstruction property in being purified for molten metal.

Description

A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof
Technical field
The present invention relates to foamed ceramics technical field, and in particular to a kind of Al2O3-ZrO2Base foamed ceramics and its preparation side Method.
Background technology
With the fast development of science and technology, industrialization and quality and purity requirement of the equipment manufacture for metal material It is increasingly harsher.Foamed ceramics because it has unique three-dimensional communication curved hole mesh skeleton structure, make it have up to 80~ 90% open pore rate, and pass through a variety of filtration, purification mechanism：Rectification scum silica frost, mechanical interception and deep layer absorption etc., can be effective Bulk inclusion and small suspension field trash in filtering metal liquid, therefore foamed ceramics is widely used in filtering and purification Molten metal.But during the foamed ceramics prepared by Polymeric sponge method is because polyurethane has been decomposed to form in calcination process Emptying aperture muscle and ceramic datum hole muscle surface produce it is a large amount of the defects of, to mechanical property, the thermal shock resistance for enabling foamed ceramics With it is poor to small suspension field trash adsorption capacity.Zirconium oxide itself with transformation toughening ability and aluminum oxide with high bullet Property modulus and intensity impart Al2O3-ZrO2The good mechanical property of base foamed ceramics.But Al2O3-ZrO2Base foamed ceramics exists High temperature and molten metal wash away under environment for a long time causes hollow hole top rib end and hole muscle remained on surface inside foamed ceramics Fault location stress concentration, cause foamed ceramics structure to be destroyed, reduce Al2O3-ZrO2Base foamed ceramics service life, and And weaken Al2O3-ZrO2The effect of filtering and purification of the base foamed ceramics to molten metal.
Technical staff conducts in-depth research to be lifted the problems such as the mechanical property and adsorption capacity of foamed ceramics at present And technological development：
The patented technology of " a kind of Zirconia special foam ceramic filter and preparation method thereof " (ZL201210115537), Disclose a kind of with zirconium oxide 38~42%, nano zircite 28~32%, nano metal zirconium 8~12%, yittrium oxide 0.5~ 1.5%, calcium oxide 0.5~1.5%, magnesia 0.5~1.5%, aluminum oxide 0.1~0.5%, carboxymethyl cellulose 0.2~ 0.8%, polyvinyl alcohol 0.5~1.5%, water 8~11%, by zirconium oxide, nano zircite, nano metal zirconium and yittrium oxide, oxygen Change calcium, magnesia and aluminum oxide and carry out ball milling mixing, be carboxymethyl cellulose, polyvinyl alcohol and water uniform stirring, by upper Slurry, dry and load high-temperature nitriding furnace Nitride firing preparation Zirconia special foam ceramic filter.This method is to a certain degree On improve the elevated temperature strength and thermal shock resistance of Zirconium oxide foamed ceramic, but its major defect is：(1) cost of raw material compared with It is high；(2) equipment requirement is harsher；(3) caused hollow hole muscle is repaired after not decomposed to foamed plastics, therefore reduces material Thermal shock resistance；(4) ability that Zirconium oxide foamed ceramic is purified and filtered to molten metal is not lifted.
The patented technology of " Zirconium oxide foam ceramic filter " (ZL200710139288), one kind is disclosed to aoxidize Zirconium, aluminum oxide, calcium oxide, yittrium oxide composition ceramic powders, add methylcellulose, polyethylene alcohol and water prepares slurry, with Flexible polyurethane foam is that carrier prepares Zirconium oxide foam ceramic filter.This method improves oxygen to a certain extent Change the high temperature resistant and thermal shock resistance of zirconium ceramic foam filter.But its major defect is：(1) zirconium oxide foam pottery is not improved Porcelain filter purifies the ability of molten metal；(2) defoamer is not added；(3) polyurethane foam plastics burns caused hollow hole after mistake Stress concentration is also easy to produce at muscle, reduces the mechanical property of material.
The content of the invention
It is contemplated that overcome prior art defect, it is therefore an objective to provide a kind of Al2O3-ZrO2Base foamed ceramics and its preparation Method, the Al prepared with this method2O3-ZrO2Base foamed ceramics intensity is high, thermal shock resistance is good and has to molten metal purification good Adsorptivity well, machinery stop property.
For achieving the above object, technical scheme provided by the invention is：
A kind of Al2O3-ZrO2Base foamed ceramics, its preparation process are as follows：
Step 1: the Ludox of the alumina powder of 100 parts of quality and 50~130 parts of quality is put into agitator, stir 20~30min is mixed, slurry I is made；
Step 2: by the zirconium oxide micro mist of 55~80 parts of quality, the alumina powder of 20~45 parts of quality, additional 5~8 parts The additive mixing of quality, obtains mixed powder I, then add into mixed powder I polycarboxylate of 0.1~0.6 part of quality, 0.3~2 part The water of the ammonium lignosulphonate of quality, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, 1~3h of mechanical ball mill, it is made Slurry II；
Step 3: polyurethane sponge is immersed in slurry I under vacuum, compressed air spraying or centrifugation after dipping Slurry is got rid of, prefabricated green compact are obtained through spontaneously drying 12~24h, then vacuum impregnation is carried out to prefabricated green compact with slurry II, is pressed after dipping Contracting air blown or centrifugal drying slurry, are spontaneously dried, and 12~24h is toasted under the conditions of 70~100 DEG C and obtains Al2O3-ZrO2Ji Pao Foam ceramic body；
Step 4: by described Al2O3-ZrO2Base foamed ceramics base substrate is inserted in high temperature furnace, under air atmosphere, with 1~ 2 DEG C/min speed is warming up to 200 DEG C, then is warming up to 680 DEG C with 1 DEG C/min speed, then with 2~3 DEG C/min speed 1350~1750 DEG C are risen to, 2~5h is incubated, is cooling to room temperature with the furnace, that is, obtaining Al2O3-ZrO2Base foamed ceramics.
Particle mean size≤7 μm of described alumina powder.
Described thickness of silica gel is 8~20wt%.
Described additive is one or more mixing in yittrium oxide micro mist, calcium oxide micro mist or fine magnesium oxide micro-powder, Wherein yittrium oxide micro mist, calcium oxide micro mist and fine magnesium oxide micro-powder average grain diameter≤25 μm.
Described zirconium oxide micro mist particle mean size≤45 μm.
Compared with prior art, the invention has the advantages that：
The present invention first mixes alumina powder and Ludox uniform, obtained slurry I；Zirconium oxide micro mist, aluminum oxide is micro- Powder, additive, lignosulfonic acid ammonium, polycarboxylate, pungent alcohol and water be mixed it is even, be made slurry II.Again under vacuum by poly- ammonia Ester sponge impregnating is starched in slurry I using compressed air spraying or centrifugal drying, is spontaneously dried 12~24h, is obtained Al2O3- ZrO2The prefabricated green compact of base foamed ceramics；Then with slurry II to Al2O3-ZrO2The prefabricated green compact of base foamed ceramics carry out vacuum impregnation, Compressed air spraying or centrifugal drying slurry, are spontaneously dried, and 12~24h is toasted under the conditions of 70~100 DEG C and obtains Al2O3-ZrO2Base Foamed ceramics base substrate；2~5h is finally incubated under the conditions of air atmosphere and 1350~1750 DEG C, produces Al2O3-ZrO2Base foam Ceramics.Al prepared by the present invention2O3-ZrO2Base foamed ceramics is sintered based on the reaction in-situ under high temperature air atmospheric condition, Special spraying coating process and protective atmosphere it are not related to, therefore technique is simple and cost is relatively low.
The present invention uses vacuum impregnation and in-situ sintering reaction technology.Slurry I, II is applied successively by Vacuum infusion techniques Cover to polyurethane sponge surface, slurry can be made to be evenly coated in matrix surface.Under high temperature air atmosphere, Al2O3-ZrO2Base foam Ceramics react sintering, and the reaction in-situ of slurry I generation mullite crystal whisker and crystal column are filled in polyurethane volatilization and formed Hole, on the one hand play a part of enhancing and toughness reinforcing in foamed ceramics matrix, on the other hand when molten metal is from hollow hole muscle Adsorption capacity of the increase foamed ceramics matrix to small suspension field trash is flowed through, lifts the quality and degree of purity of metal material.
Al prepared by the present invention2O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength is 1.5~3.5MPa；Water cooling Cycle-index is 10~20 times；Molten metal impurity content reduces by 85~96% after filtering metal copper liquid；Alkali resistant solution washes away erosion The compressive resistance of sample is 1.37~3.38MPa after 15~20h.
Therefore, the Al that prepared by the present invention2O3-ZrO2The intensity height of base foamed ceramics, good thermal shock stability, adsorption capacity are strong With excellent anti-erosion scouring capability.
Embodiment
With reference to specific embodiment, the invention will be further described.
To avoid repeating, first the technical parameter Unify legislation to be related to present embodiment is as follows, in embodiment It will not repeat：
Particle mean size≤7 μm of described alumina powder；
Described yittrium oxide micro mist, calcium oxide micro mist and fine magnesium oxide micro-powder average grain diameter≤25 μm；
Described zirconium oxide micro mist particle mean size≤45 μm.
Embodiment 1
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof, it is the step of the preparation method：
Step 1: the Ludox for being 16~20wt% by the alumina powder of 100 parts of quality and 50~80 parts of mass concentrations It is put into agitator, stirs 20~30min, slurry I is made；
Step 2: by the zirconium oxide micro mist of 55~64 parts of quality, the alumina powder of 36~45 parts of quality, additional 5~6.7 The yttrium oxide powder mixing of part quality, obtains mixed powder I, then add into mixed powder I 0.1~0.6 part of quality polycarboxylate, The water of the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, mechanical ball mill 1~ 3h, slurry II is made；
Step 3: polyurethane sponge is immersed in slurry I under vacuum, compressed air spraying or centrifugation after dipping Slurry is got rid of, Al is obtained through spontaneously drying 12~24h2O3-ZrO2The prefabricated green compact of base foamed ceramics, then with slurry II to Al2O3-ZrO2Base The prefabricated green compact of foamed ceramics carry out vacuum impregnation, compressed air spraying or centrifugal drying slurry after dipping, spontaneously dry, 70~ 12~24h is toasted under the conditions of 100 DEG C and obtains Al2O3-ZrO2Base foamed ceramics base substrate；
Step 4: by described Al2O3-ZrO2Base foamed ceramics base substrate is inserted in high temperature furnace, under air atmosphere, with 1~ 2 DEG C/min speed is warming up to 200 DEG C, then is warming up to 680 DEG C with 1 DEG C/min speed, then with 2~3 DEG C/min speed 1350~1450 DEG C are risen to, 2~5h is incubated, is cooling to room temperature with the furnace, that is, obtaining Al2O3-ZrO2Base foamed ceramics.
Al prepared by the present embodiment 12O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 1.5~ 2.2MPa；1100 DEG C of Water-cooling circulating numbers are 10~13 times；Molten metal impurity content reduces by 85~90% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 1.45~2.1MPa.
Embodiment 2
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Yu Tong
Embodiment 1.
Step 2: by the zirconium oxide micro mist of 64~73 parts of quality, the alumina powder of 27~36 parts of quality, additional 2.5~ The calcium oxide powder mixing of the yttrium oxide powder of 3.7 parts of quality and 2.8~3.9 parts of quality, obtains mixed powder I, then into mixed powder I Add the polycarboxylate of 0.1~0.6 part of quality, the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality With the water of 23~45 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 22O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 1.7~ 2.5MPa；1100 DEG C of Water-cooling circulating numbers are 11~15 times；Molten metal impurity content reduces by 87~93% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 1.56~2.3MPa.
Embodiment 3
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Yu Tong
Embodiment 1.
Step 2: by the zirconium oxide micro mist of 73~82 parts of quality, the alumina powder of 18~27 parts of quality, additional 2.2~ The magnesium oxide powder of the yttrium oxide powder of 3.5 parts of quality, the calcium oxide powder of 2.0~3.6 parts of quality and 0.8~0.9 part of quality Mixing, obtains mixed powder I, then adds into mixed powder I polycarboxylate of 0.1~0.6 part of quality, the lignin of 0.3~2 part of quality The water of ichthyodin, the octanol of 0.1~0.5 part of quality and 23~45 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 32O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 1.6~ 2.6MPa；1100 DEG C of Water-cooling circulating numbers are 12~17 times；Molten metal impurity content reduces by 86~91% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 1.37~2.2MPa.
Embodiment 4
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.The step of preparation method is：
Step 1: the Ludox for being 12~16wt% by the alumina powder of 100 parts of quality and 80~110 parts of mass concentrations It is put into agitator, stirs 20~30min, slurry I is made；
Step 2: by the zirconium oxide micro mist of 55~64 parts of quality, the alumina powder of 36~45 parts of quality, additional 5~5.5 The calcium oxide powder mixing of part quality, obtains mixed powder I, then add into mixed powder I 0.1~0.6 part of quality polycarboxylate, The water of the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, mechanical ball mill 1~ 3h, slurry II is made；
Step 3: polyurethane sponge is immersed in slurry I under vacuum, compressed air spraying or centrifugation after dipping Slurry is got rid of, Al is obtained through spontaneously drying 12~24h2O3-ZrO2The prefabricated green compact of base foamed ceramics, then with slurry II to Al2O3-ZrO2Base The prefabricated green compact of foamed ceramics carry out vacuum impregnation, compressed air spraying or centrifugal drying slurry after dipping, spontaneously dry, 70~ 12~24h is toasted under the conditions of 100 DEG C and obtains Al2O3-ZrO2Base foamed ceramics base substrate；
Step 4: by described Al2O3-ZrO2Base foamed ceramics base substrate is inserted in high temperature furnace, under air atmosphere, with 1~ 2 DEG C/min speed is warming up to 200 DEG C, then is warming up to 680 DEG C with 1 DEG C/min speed, then with 2~3 DEG C/min speed 1450~1600 DEG C are risen to, 2~5h is incubated, is cooling to room temperature with the furnace, that is, obtaining Al2O3-ZrO2Base foamed ceramics.
Al prepared by the present embodiment 42O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 2.3~ 3.1MPa；1100 DEG C of Water-cooling circulating numbers are 16~18 times；Molten metal impurity content reduces by 87~92% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 1.7~2.8MPa.
Embodiment 5
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Yu Tong
Embodiment 4.
Step 2: by the zirconium oxide micro mist of 64~73 parts of quality, the alumina powder of 27~36 parts of quality, additional 2.7~ The magnesium oxide powder mixing of the calcium oxide powder of 3.7 parts of quality and 2.8~3.9 parts of quality, obtains mixed powder I, then into mixed powder I Add the polycarboxylate of 0.1~0.6 part of quality, the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality With the water of 22~47 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 52O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 2.1~ 2.9MPa；1100 DEG C of Water-cooling circulating numbers are 15~20 times.Molten metal impurity content reduces by 88~93% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 1.8~2.9MPa.
Embodiment 6
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Remaining same embodiment 4.
Step 2: by the zirconium oxide micro mist of 73~82 parts of quality, the alumina powder of 18~27 parts of quality, additional 2.3~ The magnesium oxide powder of the yttrium oxide powder of 3.2 parts of quality, the calcium oxide powder of 2.9~3.1 parts of quality and 0.8~1.7 part of quality Mixing, obtains mixed powder I, then adds into mixed powder I polycarboxylate of 0.1~0.6 part of quality, the lignin of 0.3~2 part of quality The water of ichthyodin, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 62O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 2.3~ 3.2MPa；1100 DEG C of Water-cooling circulating numbers are 13~19 times；Molten metal impurity content reduces by 85~92% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 2.31~3.1MPa.
Embodiment 7
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.The step of preparation method is：
Step 1: it is that being put into for 8~12wt% is stirred by the alumina powder of 100 parts of quality and 110~130 parts of mass concentrations Mix in device, stir 20~30min, slurry I is made；
Step 2: by the zirconium oxide micro mist of 55~64 parts of quality, the alumina powder of 36~45 parts of quality, additional 5~6.5 The magnesium oxide powder mixing of part quality, obtains mixed powder I, then add into mixed powder I 0.1~0.6 part of quality polycarboxylate, The water of the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, mechanical ball mill 1~ 3h, slurry II is made；
Step 3: polyurethane sponge is immersed in slurry I under vacuum, compressed air spraying or centrifugation after dipping Slurry is got rid of, Al is obtained through spontaneously drying 12~24h2O3-ZrO2The prefabricated green compact of base foamed ceramics, then with slurry II to Al2O3-ZrO2Base The prefabricated green compact of foamed ceramics carry out vacuum impregnation, compressed air spraying or centrifugal drying slurry after dipping, spontaneously dry, 70~ 12~24h is toasted under the conditions of 100 DEG C and obtains Al2O3-ZrO2Base foamed ceramics base substrate；
Step 4: by described Al2O3-ZrO2Base foamed ceramics base substrate is inserted in high temperature furnace, under air atmosphere, with 1~ 2 DEG C/min speed is warming up to 200 DEG C, then is warming up to 680 DEG C with 1 DEG C/min speed, then with 2~3 DEG C/min speed 1600~1750 DEG C are risen to, 2~5h is incubated, is cooling to room temperature with the furnace, that is, obtaining Al2O3-ZrO2Base foamed ceramics.
Al prepared by the present embodiment 72O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 2.7~ 3.5MPa；1100 DEG C of Water-cooling circulating numbers are 13~17 times；Molten metal impurity content reduces by 88~95% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 2.5~3.35MPa.
Embodiment 8
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Remaining same embodiment 7.
Step 2: by the zirconium oxide micro mist of 64~73 parts of quality, the alumina powder of 27~36 parts of quality, additional 2.6~ The yttrium oxide powder mixing of the magnesium oxide powder of 3.5 parts of quality and 2.6~3.8 parts of quality, obtains mixed powder I, then into mixed powder I Add the polycarboxylate of 0.1~0.6 part of quality, the ammonium lignosulphonate of 0.3~2 part of quality, the octanol of 0.1~0.5 part of quality With the water of 22~47 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 72O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 2.8~ 3.3MPa；1100 DEG C of Water-cooling circulating numbers are 15~18 times；Molten metal impurity content reduces by 87~95% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 2.45~3.15MPa.
Embodiment 9
A kind of Al2O3-ZrO2Base foamed ceramics and preparation method thereof.Preparation method shown in the present embodiment in addition to step 2, its Remaining same embodiment 7.
Step 2: by the zirconium oxide micro mist of 73~82 parts of quality, the alumina powder of 18~27 parts of quality, additional 2.3~ The magnesium oxide powder of the yttrium oxide powder of 3.1 parts of quality, the calcium oxide powder of 2.6~2.9 parts of quality and 1.1~2.0 parts of quality Mixing, obtains mixed powder I, then adds into mixed powder I polycarboxylate of 0.1~0.6 part of quality, the lignin of 0.3~2 part of quality The water of ichthyodin, the octanol of 0.1~0.5 part of quality and 22~47 parts of quality, 1~3h of mechanical ball mill, slurry II is made；
Al prepared by the present embodiment 92O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength be 3.1~ 3.5MPa；1100 DEG C of Water-cooling circulating numbers are 13~18 times；Molten metal impurity content reduces by 89~96% after filtering metal copper liquid； The compressive resistance that alkali resistant solution washes away sample after 15~20h of erosion is 2.67~3.38MPa.
The present invention is not related to special spraying coating process and protective atmosphere, therefore technique is simple and cost is relatively low.The present invention uses Vacuum impregnation and in-situ sintering reaction technology, slurry I, II is coated to polyurethane sponge table successively by Vacuum infusion techniques Face, slurry can be made to be evenly coated in matrix surface.Under high temperature air atmosphere, Al2O3-ZrO2Base foamed ceramics reacts sintering, And the reaction in-situ of slurry I generates mullite crystal whisker and crystal column is filled in polyurethane and volatilizees formed hole on the one hand in matrix In play a part of enhancing and toughness reinforcing, on the other hand when molten metal from hollow hole muscle flow through increase foamed ceramics matrix to it is small hang The adsorption capacity of floating field trash, lift the quality and degree of purity of metal material.
Al prepared by the present invention2O3-ZrO2Base foamed ceramics, after testing：Cold crushing strength is 1.5~3.5MPa；Water cooling Cycle-index is 10~20 times；Molten metal impurity content reduces by 85~96% after filtering metal copper liquid；Alkali resistant solution washes away erosion The compressive resistance of sample is 1.37~3.38MPa after 15~20h.
Embodiment proves, Al prepared by the present invention2O3-ZrO2The intensity height of base foamed ceramics, good thermal shock stability, absorption The strong and excellent anti-erosion scouring capability of ability.
It is described above, only it is presently preferred embodiments of the present invention, any formal limitation not is made to the present invention, it is any ripe Professional and technical personnel is known, it is without departing from the scope of the present invention, real to more than according to the technical spirit of the present invention Apply any simple modification, equivalent substitution that example made and improve etc., still fall within technical solution of the present invention protection domain it It is interior.

Claims (5)

  1. A kind of 1. Al2O3-ZrO2Base foamed ceramics, it is characterised in that：Preparation process is as follows：
    Step 1: the Ludox of the alumina powder of 100 parts of quality and 50~130 parts of quality is put into agitator, stirring 20 ~30min, slurry I is made；
    Step 2: by the zirconium oxide micro mist of 55~80 parts of quality, the alumina powder of 20~45 parts of quality, additional 5~8 parts of quality Additive mixing, obtain mixed powder I, then add into mixed powder I polycarboxylate of 0.1~0.6 part of quality, 0.3~2 part of quality Ammonium lignosulphonate, the octanol of 0.1~0.5 part of quality and the water of 22~47 parts of quality, 1~3h of mechanical ball mill, slurry is made Ⅱ；
    Step 3: polyurethane sponge is immersed in slurry I under vacuum, compressed air spraying or centrifugal drying after dipping Slurry, prefabricated green compact are obtained through spontaneously drying 12~24h, then vacuum impregnation is carried out to prefabricated green compact with slurry II, compressed after dipping Air blown or centrifugal drying slurry, are spontaneously dried, and 12~24h is toasted under the conditions of 70~100 DEG C and obtains Al2O3-ZrO2Base foam Ceramic body；
    Step 4: by described Al2O3-ZrO2Base foamed ceramics base substrate is inserted in high temperature furnace, under air atmosphere, with 1~2 DEG C/ Min speed is warming up to 200 DEG C, then is warming up to 680 DEG C with 1 DEG C/min speed, is then risen to 2~3 DEG C/min speed 1350~1750 DEG C, 2~5h is incubated, room temperature is being cooled to the furnace, that is, is obtaining Al2O3-ZrO2Base foamed ceramics.
  2. 2. Al according to claim 12O3-ZrO2Base foamed ceramics, it is characterised in that：Described alumina powder is put down Equal granularity≤7 μm.
  3. 3. Al according to claim 12O3-ZrO2Base foamed ceramics, it is characterised in that：Described thickness of silica gel be 8~ 20wt%.
  4. 4. Al according to claim 12O3-ZrO2Base foamed ceramics, it is characterised in that：Described additive is yittrium oxide One or more mixing in micro mist, calcium oxide micro mist or fine magnesium oxide micro-powder, wherein yittrium oxide micro mist, calcium oxide micro mist and oxygen Change magnesium micro mist average grain diameter≤25 μm.
  5. 5. Al according to claim 12O3-ZrO2Base foamed ceramics, it is characterised in that：Described zirconium oxide micro mist is averaged Granularity≤45 μm.
CN201711106562.4A 2017-11-10 2017-11-10 Al2O3-ZrO 2-based foamed ceramic and preparation method thereof Active CN107857577B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711106562.4A CN107857577B (en) 2017-11-10 2017-11-10 Al2O3-ZrO 2-based foamed ceramic and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711106562.4A CN107857577B (en) 2017-11-10 2017-11-10 Al2O3-ZrO 2-based foamed ceramic and preparation method thereof

Publications (2)

Publication Number Publication Date
CN107857577A true CN107857577A (en) 2018-03-30
CN107857577B CN107857577B (en) 2020-10-30

Family

ID=61701678

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711106562.4A Active CN107857577B (en) 2017-11-10 2017-11-10 Al2O3-ZrO 2-based foamed ceramic and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107857577B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354499A (en) * 2018-10-22 2019-02-19 武汉科技大学 A kind of TiAl-base alloy filtering Ti-MAX base opening ceramics and preparation method thereof
CN109734476A (en) * 2019-02-20 2019-05-10 常州兆威不锈钢有限公司 A kind of preparation method of composite foamed ceramic
CN109761592A (en) * 2019-03-29 2019-05-17 南京航空航天大学 A kind of Al of hierarchical porous structure2O3-ZrO2Base foamed ceramics and preparation method thereof
CN111620699A (en) * 2020-06-03 2020-09-04 北京科技大学 Ceramic sponge material with resilient nanofiber framework and preparation method thereof
CN113165876A (en) * 2018-11-16 2021-07-23 安达满纳米奇精密宝石有限公司 Method for producing zirconia material
CN115321999A (en) * 2022-09-06 2022-11-11 宜兴市隆昌耐火材料有限公司 Preparation method of light refractory zirconia-corundum composite castable
CN116120090A (en) * 2022-12-12 2023-05-16 武汉科技大学 Whisker reinforced mullite foamed ceramic material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000043336A1 (en) * 1999-01-25 2000-07-27 University Of Delaware Oxidative dehydrogenation process and catalyst
CN104496522A (en) * 2014-12-02 2015-04-08 航天特种材料及工艺技术研究所 Method for preparing aluminum oxide/mullite foamed ceramic

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000043336A1 (en) * 1999-01-25 2000-07-27 University Of Delaware Oxidative dehydrogenation process and catalyst
CN104496522A (en) * 2014-12-02 2015-04-08 航天特种材料及工艺技术研究所 Method for preparing aluminum oxide/mullite foamed ceramic

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李玉海等: "ZrO2 /Al2O3复相泡沫陶瓷过滤器制备工艺研究", 《铸造》 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354499A (en) * 2018-10-22 2019-02-19 武汉科技大学 A kind of TiAl-base alloy filtering Ti-MAX base opening ceramics and preparation method thereof
CN113165876A (en) * 2018-11-16 2021-07-23 安达满纳米奇精密宝石有限公司 Method for producing zirconia material
CN113165876B (en) * 2018-11-16 2023-10-10 奥比睿有限公司 Method for producing zirconia material
US11992578B2 (en) 2018-11-16 2024-05-28 Orbray Co., Ltd. Method for producing zirconia material
CN109734476A (en) * 2019-02-20 2019-05-10 常州兆威不锈钢有限公司 A kind of preparation method of composite foamed ceramic
CN109761592A (en) * 2019-03-29 2019-05-17 南京航空航天大学 A kind of Al of hierarchical porous structure2O3-ZrO2Base foamed ceramics and preparation method thereof
CN111620699A (en) * 2020-06-03 2020-09-04 北京科技大学 Ceramic sponge material with resilient nanofiber framework and preparation method thereof
CN111620699B (en) * 2020-06-03 2021-08-17 北京科技大学 Ceramic sponge material with resilient nanofiber framework and preparation method thereof
CN115321999A (en) * 2022-09-06 2022-11-11 宜兴市隆昌耐火材料有限公司 Preparation method of light refractory zirconia-corundum composite castable
CN116120090A (en) * 2022-12-12 2023-05-16 武汉科技大学 Whisker reinforced mullite foamed ceramic material and preparation method thereof
CN116120090B (en) * 2022-12-12 2024-03-22 武汉科技大学 Whisker reinforced mullite foamed ceramic material and preparation method thereof

Also Published As

Publication number Publication date
CN107857577B (en) 2020-10-30

Similar Documents

Publication Publication Date Title
CN107857577A (en) A kind of Al2O3‑ZrO2Base foamed ceramics and preparation method thereof
KR102155075B1 (en) Ceramic foam filter and its manufacturing method
CN107324809B (en) Porous silicon carbide ceramic and preparation method and application thereof
CN109761592A (en) A kind of Al of hierarchical porous structure2O3-ZrO2Base foamed ceramics and preparation method thereof
CN107311677B (en) Calcium titanoaluminate-mullite complex phase refractory material and preparation method thereof
CN107698246B (en) Corundum-mullite-based foamed ceramic with multilayer skeleton structure and preparation method thereof
CN109279909B (en) Preparation method of high-strength boron carbide porous ceramic
CN108585905A (en) A kind of high-strength carborundum ceramics and preparation method thereof
CN106747367B (en) Preparation method of compact chromium oxide product with high thermal shock stability
CN108440008B (en) High-porosity ceramic filter material and preparation method thereof
CN112898009B (en) Preparation method of calcium hexaluminate foamed ceramic with multilayer structure
CN110981540B (en) Porous magnesia-based ceramic filter containing functional coating multi-pore structure and preparation method thereof
CN107698276A (en) A kind of porous silicon carbide ceramic and preparation method thereof
CN107619296A (en) A kind of preparation method of the full silicon carbide filter film of dish-style
CN113354423A (en) Formula and preparation method of carbon composite refractory material
CN112778008A (en) Aluminum titanate porous ceramic, preparation method thereof and porous medium burner
CN106431434B (en) A kind of obturator-type alumina base mullite material and preparation method thereof
CN108997001B (en) Preparation method of microporous ceramic rod for air brick
CN110776326A (en) Zirconia fiber reinforced silicon nitride porous ceramic and preparation method thereof
CN106083060A (en) A kind of preparation method of carborundum separation film
CN113999027A (en) Corundum-mullite castable for zinc oxide rotary kiln and preparation method thereof
CN101805201B (en) Preparation method of porous silicon carbide ceramics with high thermal shock resistance
CN113999024A (en) Preparation method of light-weight infrared radiation energy-saving coke oven door prefabricated part
CN112759363A (en) Foamed ceramic composite additive, foamed ceramic and preparation method thereof
CN102989235B (en) Filter for filtering molten metals and manufacturing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant