WO2011127827A1 - 一种用于过滤熔融金属的过滤器及其制造方法 - Google Patents

一种用于过滤熔融金属的过滤器及其制造方法 Download PDF

Info

Publication number
WO2011127827A1
WO2011127827A1 PCT/CN2011/072770 CN2011072770W WO2011127827A1 WO 2011127827 A1 WO2011127827 A1 WO 2011127827A1 CN 2011072770 W CN2011072770 W CN 2011072770W WO 2011127827 A1 WO2011127827 A1 WO 2011127827A1
Authority
WO
WIPO (PCT)
Prior art keywords
binder
refractory material
refractory
filter
open
Prior art date
Application number
PCT/CN2011/072770
Other languages
English (en)
French (fr)
Inventor
祝建勋
刘敬浩
Original Assignee
济南圣泉倍进陶瓷过滤器有限公司
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 济南圣泉倍进陶瓷过滤器有限公司 filed Critical 济南圣泉倍进陶瓷过滤器有限公司
Priority to CA2787909A priority Critical patent/CA2787909C/en
Priority to RU2012132954/05A priority patent/RU2500456C1/ru
Priority to AU2011240485A priority patent/AU2011240485B2/en
Priority to BR112012019376-7A priority patent/BR112012019376B1/pt
Priority to MX2012008894A priority patent/MX2012008894A/es
Priority to JP2013504108A priority patent/JP5712284B2/ja
Priority to DE112011101296.9T priority patent/DE112011101296B4/de
Priority to EP11768439.9A priority patent/EP2520349B1/en
Priority to ES11768439T priority patent/ES2763204T3/es
Priority to RS20200025A priority patent/RS60673B1/sr
Priority to KR1020127020401A priority patent/KR101293826B1/ko
Priority to US13/576,603 priority patent/US8869993B2/en
Publication of WO2011127827A1 publication Critical patent/WO2011127827A1/zh

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/20Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/20Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2068Other inorganic materials, e.g. ceramics
    • B01D39/2093Ceramic foam
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06Porous 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
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06Porous 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
    • C04B38/0615Porous 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/02Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
    • C22B9/023By filtering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08Special characteristics of binders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2239/00Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10Filtering material manufacturing
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0087Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Definitions

  • the invention relates to a filter for filtering molten metal and a method for manufacturing the same, which is submitted to the Chinese Patent Office on April 15, 2010, and the application number is 201010151598.6, and the invention is entitled "a filter for filtering molten metal and The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • Technical field is submitted to the Chinese Patent Office on April 15, 2010, and the application number is 201010151598.6, and the invention is entitled "a filter for filtering molten metal and The priority of the Chinese Patent Application, the entire disclosure of which is incorporated herein by reference.
  • the present invention relates to the field of manufacturing technology of filters, and more particularly to a filter for filtering molten metal and a method of manufacturing the same.
  • No. 5,520,823 discloses a filter for filtering only molten aluminum metal.
  • the adhesive is made of borosilicate glass.
  • the filter includes graphite, a considerable amount of graphite is lost due to sintering in air. The lost carbon limits the use of the filter, which can only be used to filter aluminum metal, not for molten iron and steel metal filtration.
  • W00218075 discloses a filter for filtering molten metal, the filter comprising an open-cell porous material comprising refractory particles bonded to an adhesive of a carbon-containing structure in an existing filter.
  • the carbon binder improves the high temperature resistance of the filter, and the control range of the carbon binder content is relatively narrow, which is disadvantageous for controlling the content of the binder during processing.
  • carbon-containing refractories can withstand higher temperatures of molten metal, prevent metal penetration, have a high strength at high temperatures, and have better thermal shock resistance.
  • the carbon adhesive-bonded filter has a low strength at room temperature, and it is easy to absorb moisture, which affects the use of the product at high temperatures. Summary of the invention
  • the present invention provides a filter for filtering molten metal and a method of manufacturing the same to improve mechanical properties at room temperature and high temperature strength of the filter.
  • the present invention provides the following technical solutions:
  • a filter for filtering molten metal comprising: an open-cell porous material, a refractory material, and a binder, the refractory material being bonded to the open-cell porous material by the binder, and the sticking A binder having a weight ratio of the refractory to the refractory material of at least 50%: no more than 50% refractory material.
  • the refractory material comprises: zirconium mullite, mullite, corundum powder, clay, pyrophyllite, wollastonite, kyanite, sillimanite, spinel or olivine One or more.
  • the binder comprises: carbon black, graphite, carbon, asphalt, tar, synthetic asphalt, synthetic resin, natural resin, anthracite, aluminum dihydrogen phosphate, aluminum sol, silica gel, One or more of silica sol, PVA, white latex, dextrin, starch, CMC or MC.
  • the binder and the refractory material have a weight ratio of 50% to 70% of binder: 30% to 50% of refractory material.
  • the invention also discloses a method for manufacturing a filter for filtering molten metal, comprising: formulating a refractory material, a binder, an additive and a liquid carrier into a slurry;
  • binder and the refractory material have a binder ratio of at least 50% by weight: no more than 50% of the refractory material.
  • the ratio of the total weight of the refractory material, the binder and the dispersing agent to the weight of the liquid carrier is at least: 70%: 30%.
  • the content of the refractory material, the binder and the dispersant is:
  • the liquid carrier is water.
  • the open-cell porous material is a mesh open-cell polyurethane foam.
  • the sintering temperature does not exceed 1150 °C.
  • the method before the step of "sintering the open-pored porous material forming the refractory coating layer at the sintering temperature", the method further comprises: drying the refractory coated opening between 100-200 ° C Porous material.
  • the refractory material comprises: zirconium mullite, mullite, corundum powder, clay, pyrophyllite, wollastonite, kyanite, sillimanite, spinel or olivine One or more.
  • the binder comprises: carbon black, graphite, carbon, asphalt, tar, synthetic asphalt, synthetic resin, natural resin, anthracite, aluminum dihydrogen phosphate, aluminum sol, silicon aluminum rubber, silicon One or more of sol, PVA, white latex, dextrin, starch, CMC or MC.
  • the binder and the refractory material have a weight ratio of 50% to 70% binder: 30% to 50% refractory material.
  • the use of the refractory material in combination with the refractory material greatly enhances the filter's mechanical performance, thereby increasing the high temperature resistance of the filter, so that the filter can filter molten metal at a severe temperature.
  • the mechanical properties such as tensile strength and elongation of the castings filtered by the filter are obviously improved.
  • the components selected for filter production are economical and relatively easy to implement during the production process, so the filter is more economical to manufacture.
  • PVA English full name: polyvinyl alcohol
  • Chinese full name polyvinyl alcohol
  • CMC English full name: Carboxyl methyl Cellulose; Chinese full name: sodium carboxymethyl cellulose.
  • MC sulfhydryl cellulose.
  • Open-celled porous material A type of pore that contains regular, partially regular, irregular or randomly distributed pores in a solid material. These pores are channels of molten metal. These holes may be exchanged in whole or in part or may have multiple channels for the passage of molten metal. The size and shape of the holes themselves can be regular or irregular. For example, the holes may be made up of a series of parallel channels that can pass linearly through the solid material, any desired cross section of the channels, for example, circular, elliptical, triangular interconnected channels, etc., holes similar to natural foam Distribution.
  • the preferred open cell porous material is a commercially available reticulated open cell polyurethane foam having a relatively regular distribution. It is well known that such materials can be used as refractory filter manufacturers for filtering molten metal.
  • Embodiments of the present invention disclose a filter for filtering molten metal and a method of manufacturing the same to improve the high temperature resistance of the filter and the mechanical properties of the filter.
  • the embodiment of the present invention adopts the following technical solution.
  • the refractory composition of the filter is mainly changed compared with the prior art, and the corresponding production method is correspondingly improved.
  • the above refractory material is mainly selected from one or more of zirconium mullite, mullite, corundum powder, clay, pyrophyllite, wollastonite, kyanite, sillimanite, spinel or olivine.
  • the binder is divided into a carbonaceous material and a binder material, and the main function of the binder is to bond the refractory material on the open-cell porous material, and the carbonaceous material is mainly selected from the group consisting of: carbon black, graphite, carbon, asphalt, Tar, synthetic asphalt, synthetic resin, natural resin or anthracite; and the bonding material is mainly selected from the group consisting of aluminum dihydrogen phosphate, aluminum sol, silica gel, silica sol, PVA, white latex, dextrin, starch, CMC or MC.
  • the binder to refractory weight ratio is preferably 50% to 70% binder: 30% to 50% refractory material.
  • the invention also discloses a method for manufacturing a filter for filtering molten metal, comprising: formulating a refractory material, a binder, an additive and a liquid carrier into a slurry;
  • binder and the refractory material have a binder ratio of at least 50% by weight: no more than 50% of the refractory material.
  • the weight ratio of the total weight of the refractory material, binder and dispersant to the liquid carrier is at least: 70%: 30%; preferably at least: 75%: 25%; more preferably 80%: 20%.
  • refractory, binder and dispersant are:
  • the additives are mainly dispersants and active agents, wherein the liquid carrier is water, and may also be decyl alcohol or ethanol.
  • the sintering temperature does not exceed 1150 ° C, and more preferably does not exceed 1100 ° C.
  • the sintering environment is carried out under an oxygen-deficient atmosphere, for example, in an oxygen-free atmosphere such as nitrogen, argon or vacuum, or in a "reduction atmosphere” such as hydrogen and/or carbon monoxide or gas.
  • Sintering is generally carried out in a drying oven or kiln, but other forms of heat may be used for sintering, such as microwaves that are heated at a radio frequency.
  • the refractory material comprises: one or more of zirconium mullite, mullite, corundum powder, clay, pyrophyllite, wollastonite, kyanite, sillimanite, spinel or olivine.
  • Binders include: carbon black, graphite, carbon, asphalt, tar, synthetic asphalt, synthetic resin, natural resin, anthracite, aluminum dihydrogen phosphate, aluminum sol, silica gel, silica sol, PVA, white latex, dextrin, One or more of starch, CMC or MC. More preferably, the binder to refractory weight ratio is from 50% to 70% binder: from 30% to 50% refractory.
  • the refractory material and the carbon material may have a particle size of less than 50 ⁇ , more preferably less than 30 ⁇ , or even less than 20 ⁇ .
  • a slurry was prepared by adding 45 wt% corundum powder, 50 wt% carbon, 2 wt% aluminum silica gel, 1.5 wt% dispersant, and 1.5 wt% active agent to water.
  • the weight ratio of the total weight of the corundum powder, carbon, aluminum silica gel, dispersant and active agent to water is: 100%: 12%.
  • This slurry was used to coat a cut polyurethane foam.
  • the foam coated with the slurry was dried, sprayed with a diluted slurry, and then dried, and then sintered at 950 °C.
  • the slurry was prepared by mixing a powder and water with a high-efficiency mixer for coating the polyurethane foam.
  • the coated foam was dried, coated with a diluted slurry and then dried, and sintered at 1100 °C.
  • Water was added to 30% mullite, 47% carbon, 20% high softening point pitch, 2% polyvinyl alcohol, 2% dispersant, and 1.0% active agent.
  • the weight ratio of the total weight of mullite powder carbon, high softening point pitch, polyvinyl alcohol, dispersant and active agent to water is: 100%: 20%.
  • the slurry is made by mixing mullite powder, carbon, high softening point pitch, polyvinyl alcohol and water with a high efficiency mixer.
  • the mixed slurry is used to coat polyurethane foam.
  • the coated polyurethane foam was dried, sprayed once with a diluted slurry, and then dried, and sintered at 1,150 ° C in an oxygen-free atmosphere.
  • Example 1 8.60 9.77 13.6 569.6 598.1 5
  • Example 2 7.33 8.53 10.9 540.0 566.4 4.88
  • Example 3 8.40 9.50 13.1 612.0 637.9 4.23
  • Example 4 8.60 9.50 10.5 584.7 619.7 5.99 where the weight ratio of refractory to water For: 100%: 22%.
  • the slurry is made by mixing various powders and water with a high-efficiency mixer. The mixed slurry is used to form a polyurethane foam. The formed polyurethane foam is dried, sprayed once with a diluted slurry, dried at about 120 ° C, and sintered at 1120 ° C in an oxygen-free atmosphere.
  • the filter size of the above four formulations is 50 * 50 * 15mm, and 50kg ZG45 molten steel is filtered at 1650 ° C. The result is The filter withstands the test conditions and the molten steel is filtered as required.
  • the tensile strength, elongation and microstructure of the casting have been significantly improved: the tensile strength is increased by 4.0-7.5%, and the elongation is increased by 9.5-15.0%; the metallographic structure of the casting has Greatly improved, the matrix before and after filtration is ferrite and pearlite, and the ferrite in the tissue after filtration is significantly thinner, which is beneficial to the performance improvement.
  • Scanning electron microscopic analysis of the fractures of the castings before and after filtration revealed that there was a direct compound inclusion in the unfiltered casting fracture, and the filter was found to have no inclusions in the fracture of the casting.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acoustics & Sound (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Materials (AREA)
  • Ceramic Products (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Composite Materials (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

一种用于过滤熔融金属的过滤器及其制造方法 本申请要求于 2010 年 4 月 15 日提交中国专利局、 申请号为 201010151598.6、 发明名称为"一种用于过滤熔融金属的过滤器及其制造方 法"的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及过滤器的制造技术领域, 更具体地说, 涉及一种用于过滤 熔融金属的过滤器及其制造方法。
背景技术
目前, 已有多篇涉及过滤熔融金属过滤器技术的文献:
美国专利 5104540 ( CORNING公司 )公开了一种用于过滤熔融金属的 碳涂覆多孔烧结陶瓷过滤器, 包含从耐火材料形成的单片基料,如氧化铝、 莫来石、 锆英粉、 氧化锆、 尖晶石、 堇青石、 锂、 硅酸铝、 钛酸盐、 长石、 石英、 气相氧化硅、 碳化硅、 高岭土、 钛酸铝、 硅酸盐、 铝酸盐及它们的
US5520823公开的是只用于过滤熔融铝金属的过滤器。 胶粘剂采用硼 硅酸盐玻璃。 尽管该过滤器包括石墨, 但由于在空气中烧结, 相当量的石 墨损失掉了。损失掉的碳限制了过滤器的使用,使之只能用于过滤铝金属, 而不能用于熔融铁及钢金属过滤。
W00218075公开了一种用于过滤熔融金属的过滤器, 该过滤器包含开 孔多孔材料, 该材料包含了与含碳结构的胶粘剂粘结在一起的耐火材料粒 在现有的过滤器中通过采用碳粘合剂提高过滤器的耐高温性能, 且碳 粘合剂的含量的控制范围比较窄, 不利于在加工中控制粘结剂的含量。 另 夕卜, 虽然含有碳的耐火材料可以经受住熔融金属更高的温度, 防止金属渗 透、 在高温下有 4艮高的强度, 以及更好的抗热震效果。 但是碳粘合剂粘结 的过滤器在室温下强度很低, 同时其易吸潮, 影响产品在高温下的使用。 发明内容
有鉴于此,本发明提供一种用于过滤熔融金属的过滤器及其制造方法, 以提高过滤器常温机械性能以及耐高温强度。
为实现上述目的, 本发明提供如下技术方案:
一种用于过滤熔融金属的过滤器, 包括: 开孔多孔材料、 耐火材料和 粘结剂, 所述耐火材料通过所述粘结剂粘接在所述开孔多孔材料上, 且所 述粘结剂与所述耐火材料重量比例为至少 50%的粘结剂: 不多于 50%的耐 火材料。
优选地, 在上述过滤器中, 所述耐火材料包括: 锆莫来石、 莫来石、 刚玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的 一种或多种。
优选地, 在上述过滤器中, 所述粘结剂包括: 炭黑、 石墨、 碳、 沥青、 焦油、 合成沥青、 合成树脂、 天然树脂、 无烟煤、 磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳胶、 糊精、 淀粉、 CMC或 MC中的一种或多 种。
优选地, 在上述过滤器中, 所述粘结剂与所述耐火材料重量比例为 50%~70%的粘结剂: 30%~50%的耐火材料。
本发明还公开了一种用于过滤熔融金属的过滤器的制造方法, 包括: 将耐火材料、 粘结剂、 添加剂和液体载体配制成浆料;
将配制好的浆料涂挂在开孔多孔材料上形成至少一层耐火涂层; 将形成耐火涂层的开孔多孔材料在烧结温度下进行烧结;
其中, 所述粘结剂与所述耐火材料重量比例为至少 50%的粘结剂: 不 多于 50%的耐火材料。
优选地, 在上述方法中, 所述耐火材料、 粘结剂和分散剂的总重量与 液体载体的重量比例至少为: 70%: 30%。
优选地, 在上述方法中, 所述耐火材料、 粘结剂和分散剂的含量为:
20~45wt%的耐火材料; 52~78\¥1%的粘结剂;
l~9wt%的添加剂。
优选地, 在上述方法中, 所述液体载体为水。
优选地, 在上述方法中, 所述开孔多孔材料为网状开孔聚氨酯泡沫。 优选地, 在上述方法中, 所述烧结温度不超过 1150°C。
优选地,在上述方法中,在步骤 "将形成耐火涂层的开孔多孔材料在烧 结温度下进行烧结"之前还包括: 在 100-200°C之间干燥涂挂有耐火涂层的 开孔多孔材料。
优选地, 在上述方法中, 所述耐火材料包括: 锆莫来石、 莫来石、 刚 玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的一 种或多种。
优选地, 在上述方法中, 所述粘结剂包括: 炭黑、 石墨、 碳、 沥青、 焦油、 合成沥青、 合成树脂、 天然树脂、 无烟煤、 磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳胶、 糊精、 淀粉、 CMC或 MC中的一种或多 种。
优选地, 在上述方法中, 所述粘结剂与所述耐火材料重量比例为 50%~70%的粘结剂: 30%~50%的耐火材料。
上述过滤器中通过增加粘结剂的组分和含量, 结合耐火材料使用使得 过滤器的机 生能大大增强, 增加了过滤器的耐高温性能, 因此该过滤器 可以过滤苛刻温度的熔融金属, 经过滤器过滤的铸件其抗拉强度、 延伸率 等机械性能都明显提高。 另外, 过滤器生产中选用的组分比较经济, 且在 生产过程中比较容易实现, 所以该过滤器制作更经济。
具体实施方式
下面对设计到的名词进行解释:
PVA: 英文全称: polyvinyl alcohol; 中文全称: 聚乙烯醇。
CMC: 英文全称: Carboxyl methyl Cellulose; 中文全称: 羧曱基纤维 素钠。 MC: 曱基纤维素。
开孔多孔材料: 是指一种在实体材料中包含规则、 部分规则、 不规则 或随机分布的孔, 这些孔为熔融金属的通道。 这些孔可以全部或部分交互 交流或可以有多个通道, 使熔融金属通过。 孔本身大小及形状可以是规则 或不规则的。 例如, 这些孔可以由一系列平行的通道, 可以线性穿过该实 体材料, 这些通道有任何需要的横截面, 例如, 圓形的、 橢圓形、 三角形 互连通道等, 与天然泡沫相似的孔状分布。 首选的开孔多孔材料是可以商 业购买到的拥有相对规则分布的网状开孔聚氨酯泡沫。 众所周知, 该类材 料可以被用于过滤熔融金属的耐火材料过滤器生产厂家。
下面对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所 描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本 发明中的实施例, 本领域普通技术人员在没有做出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例公开了一种用于过滤熔融金属的过滤器及其制造方法, 以提高过滤器耐高温性能以及过滤器的机械性能。
为实现上述目的, 本发明实施例采用如下技术方案, 在本发明中将过 滤器的耐火成分较之现有技术做出主要改变, 其对应的生产方法做出相应 的改进。
一种用于过滤熔融金属的过滤器, 包括: 开孔多孔材料、 粘结剂和耐 火材料, 耐火材料通过粘结剂粘接在开孔多孔材料上, 且所述粘结剂与所 述耐火材料重量比例为至少 50%的粘结剂: 不多于 50%的耐火材料。
上述耐火材料主要选自: 锆莫来石、 莫来石、 刚玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的一种或多种。
其中, 粘结剂分为碳质材料和粘结材料, 两者的主要功用就是用于粘 结耐火材料在开孔多孔材料上, 碳质材料主要选自: 炭黑、 石墨、 碳、 沥 青、 焦油、 合成沥青、 合成树脂、 天然树脂或无烟煤; 而粘结材料主要选 自磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳胶、 糊精、 淀粉、 CMC或 MC中的一种或多种。 粘结剂与耐火材料重量比例更优地为 50%~70%的粘结剂: 30%~50% 的耐火材料。
本发明还公开了一种用于过滤熔融金属的过滤器的制造方法, 包括: 将耐火材料、 粘结剂、 添加剂和液体载体配制成浆料;
将配制好的浆料涂挂在开孔多孔材料上形成至少一层耐火涂层; 将形成耐火涂层的开孔多孔材料在烧结温度下进行烧结;
其中, 所述粘结剂与所述耐火材料重量比例为至少 50%的粘结剂: 不 多于 50%的耐火材料。
耐火材料、 粘结剂和分散剂的总重量与液体载体的重量比例至少为: 70%: 30%; 优选地至少为: 75%: 25%; 更为优选地为 80%: 20%。
耐火材料、 粘结剂和分散剂的含量分别为:
20~45wt%的耐火材料;
52~78\¥1%的粘结剂;
l~9wt%的添加剂。
添加剂主要是分散剂和活性剂, 其中液体载体为水, 还可以为曱醇或 者乙醇。
在烧结之前还包括: 在 100-200°C之间干燥涂挂有耐火涂层的开孔多 孔材料。
烧结时, 烧结温度不超过 1150°C , 更为可取的是不超过 1100°C。 烧结 环境为缺氧气氛下进行, 例如在氮、 氩、 真空等无氧气氛中, 或者 "还原 气氛" 中, 如氢和 /或一氧化碳、 煤气中。 烧结一般是在一个烘干炉或窑炉 内进行, 但也可以使用其它形式的热源进行烧结, 如进行无线频率加热的 微波。
耐火材料包括: 锆莫来石、 莫来石、 刚玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的一种或多种。
粘结剂包括: 炭黑、 石墨、 碳、 沥青、 焦油、 合成沥青、 合成树脂、 天然树脂、 无烟煤、 磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳 胶、 糊精、 淀粉、 CMC或 MC中的一种或多种。 粘结剂与耐火材料重量比例更优选的为 50%~70%的粘结剂: 30%~50% 的耐火材料。
耐火材料及碳材料粒子大小可以小于 50μΜ , 更为可取的是小于 30μΜ, 甚至小于 20μΜ。
实施例一
将 45wt%刚玉粉、 50 wt %碳、 2 wt %铝硅胶、 1.5 wt %分散剂和 1.5 wt %活性剂中加入水制成浆料。 其中刚玉粉、 碳、 铝硅胶、 分散剂和活性剂 的总重量与水的重量比例为: 100%: 12%。
将该浆料用来涂覆切割好的聚氨酯泡沫。 涂挂好浆料的泡沫进行干燥 后再用稀释的浆料进行喷涂后再干燥, 然后在 950°C下进行烧结。
实施例二
在 29%尖晶石粉、 56%碳、 12%硅溶胶、 2.5%的分散剂和 0.5%活性剂 中加入水形成浆料。 其中尖晶石粉、 碳、 硅溶胶、 的分散剂和活性剂的总 重量与水的重量比例为: 100%: 18%。
浆料是用一个高效混料器把粉料及水混合制成的, 该浆料用来涂覆聚 氨酯泡沫。 涂挂好的泡沫进行干燥后再用稀释的浆料涂挂一次后再干燥, 在 1100°C下进行烧结。
实施例三
在 30%莫来石粉、 47%碳、 20%高软化点沥青、 2%聚乙烯醇、 2%的分 散剂和 1.0%活性剂中加入水。其中莫来石粉碳、 高软化点沥青、聚乙烯醇、 的分散剂和活性剂的总重量与水的重量比例为: 100%: 20%。
浆料是用一个高效混料器把莫来石粉、 碳、 高软化点沥青、 聚乙烯醇 及水混合制成的。 混制的浆料用来涂覆聚氨酯泡沫。 涂挂好的聚氨酯泡沫 进行干燥后再用稀释的浆料喷涂一次后再干燥, 在 1150°C下在无氧气氛下 进行烧结。
实施例四
40%电熔莫来石粉、 20%的刚玉粉、 20%的片状石墨粉、 10%无定型石 墨 4%羧曱基纤维素、 0.5%的分散剂和 0.5%活性剂,在上述粉末中加入水。 延伸率 抗拉强度 实施例 未过滤 过滤 i?:¾ 未过滤 过滤 i?:¾
% % % Mpa Mpa % 实施例一 8.60 9.77 13.6 569.6 598.1 5 实施例二 7.33 8.53 10.9 540.0 566.4 4.88 实施例三 8.40 9.50 13.1 612.0 637.9 4.23 实施例四 8.60 9.50 10.5 584.7 619.7 5.99 其中耐火材料与水的重量比例为: 100%: 22%。 浆料是用一个高效混料器 把各种粉料及水混合制成的。 混制的浆料用来成型聚氨酯泡沫。 成型好的 聚氨酯泡沫进行干燥后再用稀释的浆料喷涂一次后再在 120°C左右下干 燥, 在 1120°C下在无氧气氛下进行烧结。
过滤器中不同的粘结剂和耐火材料对铸件过滤前后性能对比表: 按上述四种配方制成的过滤器尺寸为 50 * 50 * 15mm, 在 1650°C下过 滤了 50kgZG45钢水, 结果是该过滤器经受住了该检测条件, 并且按要求 对熔融钢水进行了过滤。 通过过滤后对铸件的检测发现, 铸件抗拉强度、 延伸率、 组织结构有了明显改善: 抗拉强度提高幅度在 4.0-7.5%, 延伸率 提高在 9.5-15.0%; 铸件金相组织有了很大改善, 过滤前后基体都为铁素体 和珠光体, 过滤后组织中的铁素体明显变细, 这有利于性能提高。 通过对 过滤前后铸件断口进行扫描电镜 观分析发现, 未过滤铸件断口有直化物 夹杂, 而采用过滤器过滤后发现铸件断口无夹杂物。
对所公开的实施例的上述说明, 使本领域专业技术人员能够实现或使 用本发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显 而易见的, 本文中所定义的一般原理可以在不脱离本发明的精神或范围的 情况下, 在其它实施例中实现。 因此, 本发明将不会被限制于本文所示的 这些实施例, 而是要符合与本文所公开的原理和新颖特点相一致的最宽的 范围。

Claims

权 利 要 求
1、 一种用于过滤熔融金属的过滤器, 其特征在于, 包括: 开孔多孔材 料、 耐火材料和粘结剂, 所述耐火材料通过所述粘结剂粘接在所述开孔多 孔材料上, 且所述粘结剂与所述耐火材料重量比例为至少 50%的粘结剂: 不多于 50%的耐火材料。
2、 根据权利要求 1所述的过滤器, 其特征在于, 所述耐火材料包括: 锆莫来石、 莫来石、 刚玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的一种或多种。
3、 根据权利要求 2所述的过滤器, 其特征在于, 所述粘结剂包括: 炭 黑、 石墨、 碳、 沥青、 焦油、 合成沥青、 合成树脂、 天然树脂、 无烟煤、 磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳胶、 糊精、 淀粉、 CMC 或 MC中的一种或多种。
4、根据权利要求 3所述的过滤器, 其特征在于, 所述粘结剂与所述耐 火材料重量比例为 50%~70%的粘结剂: 30%~50%的耐火材料。
5、 一种用于过滤熔融金属的过滤器的制造方法, 其特征在于, 包括: 将耐火材料、 粘结剂、 添加剂和液体载体配制成浆料;
将配制好的浆料涂挂在开孔多孔材料上形成至少一层耐火涂层; 将形成耐火涂层的开孔多孔材料在烧结温度下进行烧结;
其中, 所述粘结剂与所述耐火材料重量比例为至少 50%的粘结剂: 不 多于 50%的耐火材料。
6、 根据权利要求 5所述的方法, 其特征在于, 所述耐火材料、 粘结剂 和分散剂的总重量与液体载体的重量比例至少为: 70%: 30%。
7、 根据权利要求 5或 6所述的方法, 其特征在于, 所述耐火材料、 粘 结剂和分散剂的含量为:
20~45wt%的耐火材料;
52~78\¥1%的粘结剂;
l~9wt%的添加剂。
8、 根据权利要求 7所述的方法, 其特征在于, 所述液体载体为水。
9、根据权利要求 8所述的方法, 其特征在于, 所述开孔多孔材料为网 状开孔聚氨酯泡沫。
10、 根据权利要求 9所述的方法, 其特征在于, 所述烧结温度不超过 1150°C。
11、 根据权利要求 10所述的方法, 其特征在于, 在步骤 "将形成耐火 涂层的开孔多孔材料在烧结温度下进行烧结"之前还包括: 在 100-200 °C之 间干燥涂挂有耐火涂层的开孔多孔材料。
12、 根据权利要求 11所述的方法, 其特征在于, 所述耐火材料包括: 锆莫来石、 莫来石、 刚玉粉、 粘土、 叶腊石、 硅灰石、 蓝晶石、 硅线石、 尖晶石或橄榄石中的一种或多种。
13、 根据权利要求 12所述的方法, 其特征在于, 所述粘结剂包括: 炭 黑、 石墨、 碳、 沥青、 焦油、 合成沥青、 合成树脂、 天然树脂、 无烟煤、 磷酸二氢铝、 铝溶胶、 硅铝胶、 硅溶胶、 PVA、 白乳胶、 糊精、 淀粉、 CMC 或 MC中的一种或多种。
14、根据权利要求 13所述的方法, 其特征在于, 所述粘结剂与所述耐 火材料重量比例为 50%~70%的粘结剂: 30%~50%的耐火材料。
PCT/CN2011/072770 2010-04-15 2011-04-14 一种用于过滤熔融金属的过滤器及其制造方法 WO2011127827A1 (zh)

Priority Applications (12)

Application Number Priority Date Filing Date Title
CA2787909A CA2787909C (en) 2010-04-15 2011-04-14 Filter used for filtering molten metal and preparation method thereof
RU2012132954/05A RU2500456C1 (ru) 2010-04-15 2011-04-14 Фильтр, используемый для фильтрования расплавленного металла, и способ его изготовления
AU2011240485A AU2011240485B2 (en) 2010-04-15 2011-04-14 Filter used for filtering molten metal and preparation method thereof
BR112012019376-7A BR112012019376B1 (pt) 2010-04-15 2011-04-14 Filtro usado para filtrar metal fundido e método de preparação do mesmo
MX2012008894A MX2012008894A (es) 2010-04-15 2011-04-14 Filtro usado para la filtracion de metal fundido y procedimiento de fabricacion del mismo.
JP2013504108A JP5712284B2 (ja) 2010-04-15 2011-04-14 溶融金属をろ過するために用いられるフィルターおよびその製造方法
DE112011101296.9T DE112011101296B4 (de) 2010-04-15 2011-04-14 Filter zum Filtrieren von geschmolzenem Metall und Herstellungsverfahren dafür
EP11768439.9A EP2520349B1 (en) 2010-04-15 2011-04-14 Filter used for filtering molten metal and preparation method thereof
ES11768439T ES2763204T3 (es) 2010-04-15 2011-04-14 Filtro usado para la filtración de metal fundido y procedimiento de fabricación del mismo
RS20200025A RS60673B1 (sr) 2010-04-15 2011-04-14 Filter koji se koristi za topljeni metal i postupak njegove izrade
KR1020127020401A KR101293826B1 (ko) 2010-04-15 2011-04-14 용융된 금속 여과용 필터 및 그 제조 방법
US13/576,603 US8869993B2 (en) 2010-04-15 2011-04-14 Filter used for filtering molten metal and preparation method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010151598.6 2010-04-15
CN2010101515986A CN101810973B (zh) 2010-04-15 2010-04-15 一种用于过滤熔融金属的过滤器及其制造方法

Publications (1)

Publication Number Publication Date
WO2011127827A1 true WO2011127827A1 (zh) 2011-10-20

Family

ID=42618426

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/072770 WO2011127827A1 (zh) 2010-04-15 2011-04-14 一种用于过滤熔融金属的过滤器及其制造方法

Country Status (14)

Country Link
US (1) US8869993B2 (zh)
EP (1) EP2520349B1 (zh)
JP (1) JP5712284B2 (zh)
KR (1) KR101293826B1 (zh)
CN (1) CN101810973B (zh)
AU (1) AU2011240485B2 (zh)
BR (1) BR112012019376B1 (zh)
CA (1) CA2787909C (zh)
DE (1) DE112011101296B4 (zh)
ES (1) ES2763204T3 (zh)
MX (1) MX2012008894A (zh)
RS (1) RS60673B1 (zh)
RU (1) RU2500456C1 (zh)
WO (1) WO2011127827A1 (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101810973B (zh) 2010-04-15 2012-05-23 济南圣泉倍进陶瓷过滤器有限公司 一种用于过滤熔融金属的过滤器及其制造方法
CN102921238B (zh) * 2012-11-16 2014-09-24 济南圣泉集团股份有限公司 用于过滤熔融金属的过滤器及其制造方法
CN102989236B (zh) * 2012-12-26 2015-04-08 济南圣泉集团股份有限公司 用于过滤熔融金属的过滤器及其制造方法
CN102989235B (zh) * 2012-12-26 2015-05-13 济南圣泉集团股份有限公司 用于过滤熔融金属的过滤器及其制造方法
WO2016144899A1 (en) * 2015-03-06 2016-09-15 Comanche Technologies, Llc Metallurgical slag coatings for refractory substrates
CN116196689A (zh) 2015-07-08 2023-06-02 恩特格里斯公司 高压过滤器
CN106220218A (zh) 2016-07-25 2016-12-14 济南圣泉倍进陶瓷过滤器有限公司 一种泡沫陶瓷过滤器及其制造方法
KR101841843B1 (ko) * 2016-09-28 2018-03-26 한국과학기술연구원 납석함유 세리막 분리막을 이용한 수처리 공정
KR102018464B1 (ko) * 2018-12-21 2019-09-04 최외수 도로에서 발생하는 미세먼지를 포함한 유해물질 저감장치
KR102147536B1 (ko) 2019-01-04 2020-08-24 변성준 용융금속 여과용 필터의 제조 방법 및 그에 따라 제조된 필터
CN111960724B (zh) * 2020-08-05 2021-10-29 河南好运祥耐材有限公司 一种耐高温耐磨泥浆
CN115650746B (zh) * 2022-11-15 2023-08-15 上海鑫益瑞杰有色合金有限公司 一种铝合金熔体净化滤材及其制备方法
CN115745657B (zh) * 2022-11-29 2023-07-21 江西工陶院精细陶瓷有限公司 一种利用铬渣制备陶瓷波纹规整填料的方法
CN117362002B (zh) * 2023-12-04 2024-02-02 山东理工大学 以固废为原料的高温相变蓄热陶瓷砖及其制备方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265659A (en) * 1979-10-09 1981-05-05 Swiss Aluminium Ltd. Molten metal filter
US5104540A (en) 1990-06-22 1992-04-14 Corning Incorporated Coated molten metal filters
US5520823A (en) 1992-06-05 1996-05-28 Foseco International Limited Filters for light metals
WO2002018075A1 (en) 2000-08-31 2002-03-07 Foseco International Limited Refractory articles
CN101257957A (zh) * 2005-09-05 2008-09-03 维苏维尤斯·克鲁斯布公司 用于熔融金属过滤的过滤器装置及制备这种过滤器的方法
CN101810973A (zh) * 2010-04-15 2010-08-25 济南圣泉倍进陶瓷过滤器有限公司 一种用于过滤熔融金属的过滤器及其制造方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090094A (en) * 1961-02-21 1963-05-21 Gen Motors Corp Method of making porous ceramic articles
JPS6196045A (ja) * 1984-10-01 1986-05-14 Mitsui Eng & Shipbuild Co Ltd カルシア質多孔質体及びそれを用いた高純度合金の製造方法
US5045111A (en) * 1986-06-27 1991-09-03 The Carborundum Company Filtration of molten ferrous metal
GB8904152D0 (en) * 1989-02-23 1989-04-05 Foseco Int Filters for light metals
GB8918048D0 (en) * 1989-08-08 1989-09-20 Foseco Int Ceramic foam filters
US5104450A (en) 1990-09-26 1992-04-14 Eastman Kodak Company Formulations of cellulose esters with arylene-bis(diaryl phosphate)s
GB9107223D0 (en) 1991-04-05 1991-05-22 Foseco Holding Int Ltd Filters for light metals
GB2255297B (en) * 1991-04-05 1995-01-04 Hadley Ind Plc A channel,manufacture of the channel and fastener for the use with the channel
DE19828257A1 (de) 1998-06-25 1999-12-30 Bayer Ag Werkstoffe zur Konstruktion und Isolation, ein Verfahren zur Herstellung und deren Verwendung sowie ein Bindemittel zur Herstellung von Werkstoffen
EP1369158A1 (en) 2002-05-31 2003-12-10 Carbon Application Technology Ltd. Fiber reinforced filter for molten metal filtration and method for producing such filters
EP1666436B1 (en) 2003-08-29 2013-07-31 Hitachi Metals, Ltd. Ceramic honeycomb structure and ceramic body used for extrusion-molding the structure
US7442425B2 (en) 2003-09-30 2008-10-28 Corning Incorporated High porosity honeycomb and method
WO2009020835A2 (en) * 2007-08-03 2009-02-12 Errcive, Inc. Porous bodies and methods
CN101224361A (zh) * 2007-10-25 2008-07-23 晶锐瓷业(北京)有限公司 一种具有高抗渣性高热稳定性的泡沫陶瓷过滤器及制作方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4265659A (en) * 1979-10-09 1981-05-05 Swiss Aluminium Ltd. Molten metal filter
US5104540A (en) 1990-06-22 1992-04-14 Corning Incorporated Coated molten metal filters
US5520823A (en) 1992-06-05 1996-05-28 Foseco International Limited Filters for light metals
WO2002018075A1 (en) 2000-08-31 2002-03-07 Foseco International Limited Refractory articles
CN1449312A (zh) * 2000-08-31 2003-10-15 福塞科国际有限公司 耐火制品
CN101257957A (zh) * 2005-09-05 2008-09-03 维苏维尤斯·克鲁斯布公司 用于熔融金属过滤的过滤器装置及制备这种过滤器的方法
CN101810973A (zh) * 2010-04-15 2010-08-25 济南圣泉倍进陶瓷过滤器有限公司 一种用于过滤熔融金属的过滤器及其制造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2520349A4

Also Published As

Publication number Publication date
ES2763204T3 (es) 2020-05-27
CN101810973A (zh) 2010-08-25
US8869993B2 (en) 2014-10-28
CA2787909C (en) 2015-06-30
EP2520349B1 (en) 2019-10-09
BR112012019376A8 (pt) 2021-03-02
DE112011101296T5 (de) 2013-01-31
KR101293826B1 (ko) 2013-08-07
DE112011101296B4 (de) 2016-08-11
RU2500456C1 (ru) 2013-12-10
BR112012019376A2 (pt) 2020-08-18
JP5712284B2 (ja) 2015-05-07
US20130020252A1 (en) 2013-01-24
KR20120115353A (ko) 2012-10-17
EP2520349A4 (en) 2017-04-12
JP2013529167A (ja) 2013-07-18
CA2787909A1 (en) 2011-10-20
AU2011240485B2 (en) 2015-01-15
CN101810973B (zh) 2012-05-23
AU2011240485A1 (en) 2012-08-09
MX2012008894A (es) 2013-02-21
BR112012019376B1 (pt) 2021-03-23
RS60673B1 (sr) 2020-09-30
EP2520349A1 (en) 2012-11-07

Similar Documents

Publication Publication Date Title
WO2011127827A1 (zh) 一种用于过滤熔融金属的过滤器及其制造方法
CN104190161B (zh) 包含石墨烯的熔融金属用陶瓷过滤器
CN101264401B (zh) 用硅胶粘合剂粘合的含有碳质材料的陶瓷过滤器及其制造方法
RU2456056C2 (ru) Керамический фильтр, содержащий углеродное покрытие, и способ его изготовления
CN101948316B (zh) 陶瓷过滤支撑体的制备方法
CN109279909B (zh) 一种高强度碳化硼多孔陶瓷的制备方法
CN101328073A (zh) 自增强型陶瓷纤维浇注料及其制备方法
CN110563476A (zh) 纤维增强耐火砖及其制备方法
CN112430123A (zh) 一种窄孔径分布、大尺寸堇青石汽油颗粒过滤器及其制备方法
JP2012504092A (ja) 多孔質SiC材料の製造方法
CN105669170A (zh) 一种含烧失造孔剂的重轻复合耐火砖
CN102989235B (zh) 用于过滤熔融金属的过滤器及其制造方法
CN101810972B (zh) 一种用于过滤熔融金属的过滤器及其制造方法
CN103833387A (zh) 高耐磨硅莫红砖及其制备工艺
CN105732084A (zh) 一种含烧失造孔剂的复合耐火砖
AU2012101258A4 (en) Filter used for filtering molten metal and preparation method thereof
CN105669221A (zh) 一种含膨胀玻化微珠的复合耐火砖
CN105481408A (zh) 一种复合耐火砖
CN108285350A (zh) 一种三元复合碳化硅质耐火材料及其制备方法
JPH0779935B2 (ja) コーディエライト質ガス用フィルタとその製造方法
CN108298994A (zh) 一种高性能推板及制备方法
CN102989236B (zh) 用于过滤熔融金属的过滤器及其制造方法
JP3524668B2 (ja) 連続鋳造用ノズル耐火物
CN105645978A (zh) 一种重轻复合耐火砖
CN117986006A (zh) 一种真空感应炉炉衬用复合耐火材料及其制备方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11768439

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2011240485

Country of ref document: AU

ENP Entry into the national phase

Ref document number: 2787909

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 1807/MUMNP/2012

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2011768439

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 13576603

Country of ref document: US

Ref document number: 2012132954

Country of ref document: RU

Ref document number: MX/A/2012/008894

Country of ref document: MX

ENP Entry into the national phase

Ref document number: 20127020401

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2013504108

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 2011240485

Country of ref document: AU

Date of ref document: 20110414

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 112011101296

Country of ref document: DE

Ref document number: 1120111012969

Country of ref document: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112012019376

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112012019376

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20120802