JPS51142162A - Ceramic foam filter* manufacturing method therefor*and method of filtrating molten metals by using said filter - Google Patents

Ceramic foam filter* manufacturing method therefor*and method of filtrating molten metals by using said filter

Info

Publication number
JPS51142162A
JPS51142162A JP51034261A JP3426176A JPS51142162A JP S51142162 A JPS51142162 A JP S51142162A JP 51034261 A JP51034261 A JP 51034261A JP 3426176 A JP3426176 A JP 3426176A JP S51142162 A JPS51142162 A JP S51142162A
Authority
JP
Japan
Prior art keywords
filter
manufacturing
ceramic foam
molten metals
method therefor
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
JP51034261A
Other languages
Japanese (ja)
Other versions
JPS6017563B2 (en
Inventor
Shii Yaautsudo Jiyon
Ii Dooaa Jieemusu
Kei Puriyuusu Robaato
Jiei Puraiyaa Maikuru
Jiei Guree Toomasu
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.)
Rio Tinto Switzerland AG
Original Assignee
Alusuisse Holdings AG
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
Priority claimed from US05/563,212 external-priority patent/US3947363A/en
Priority claimed from US05/563,213 external-priority patent/US3962081A/en
Priority claimed from US05/589,294 external-priority patent/US4024212A/en
Priority claimed from US05/597,963 external-priority patent/US4024056A/en
Application filed by Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Publication of JPS51142162A publication Critical patent/JPS51142162A/en
Publication of JPS6017563B2 publication Critical patent/JPS6017563B2/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/001Retaining slag during pouring molten metal
    • B22D43/004Retaining slag during pouring molten metal by using filtering means
    • 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
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10Shaped 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
    • 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
    • C04B38/0051Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
    • 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
    • C22B21/00Obtaining aluminium
    • C22B21/06Obtaining aluminium refining
    • C22B21/066Treatment of circulating aluminium, e.g. by filtration
    • 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
    • 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
    • C22B9/05Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • 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
    • C22B9/05Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C22B9/055Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ while the metal is circulating, e.g. combined with filtration
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Filtration Of Liquid (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
JP51034261A 1975-03-28 1976-03-29 Manufacturing method of ceramic foam filter Expired JPS6017563B2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US05/563,212 US3947363A (en) 1974-01-02 1975-03-28 Ceramic foam filter
US563212 1975-03-28
US05/563,213 US3962081A (en) 1975-03-28 1975-03-28 Ceramic foam filter
US589294 1975-06-23
US05/589,294 US4024212A (en) 1975-03-28 1975-06-23 Ceramic foam and method of preparation
US597963 1975-07-21
US05/597,963 US4024056A (en) 1975-07-21 1975-07-21 Filtering of molten metal
US563213 1995-11-27

Publications (2)

Publication Number Publication Date
JPS51142162A true JPS51142162A (en) 1976-12-07
JPS6017563B2 JPS6017563B2 (en) 1985-05-04

Family

ID=27504834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51034261A Expired JPS6017563B2 (en) 1975-03-28 1976-03-29 Manufacturing method of ceramic foam filter

Country Status (11)

Country Link
JP (1) JPS6017563B2 (en)
AT (1) AT365088B (en)
BR (1) BR7601848A (en)
CA (1) CA1059535A (en)
CH (1) CH622230A5 (en)
DE (2) DE2660717C2 (en)
FR (1) FR2305407A1 (en)
IT (1) IT1060714B (en)
NL (1) NL182289C (en)
NO (2) NO148381C (en)
YU (1) YU37100B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5524585A (en) * 1978-08-12 1980-02-21 Bridgestone Corp Ceramic porous body
JPS55111817A (en) * 1979-02-19 1980-08-28 Bridgestone Corp Ceramic porous body
JPS5660618A (en) * 1979-10-23 1981-05-25 Bridgestone Corp Porous ceramic structure
JPS5662509A (en) * 1979-10-30 1981-05-28 Bridgestone Corp Porous ceramic structure
JPS574710A (en) * 1980-06-13 1982-01-11 Mitsubishi Mining & Cement Co Manufacture of ceramic porous body
JPS594409A (en) * 1982-06-10 1984-01-11 スイス・アルミニウム・リミテツド Filter material for filtering molten metal
JPS5943833A (en) * 1982-09-06 1984-03-12 Furukawa Electric Co Ltd:The Method for removing foreign matter in molten copper
JPS5978967A (en) * 1982-10-22 1984-05-08 井上エムテ−ピ−株式会社 Ceramic foam whose average cell size is partially different and manufacture
JPS59149965U (en) * 1983-03-26 1984-10-06 住友軽金属工業株式会社 In-line processing equipment for molten metal
JPS59149966U (en) * 1983-03-26 1984-10-06 住友軽金属工業株式会社 In-line processing equipment for molten aluminum or its alloys
JPS59153362U (en) * 1983-03-31 1984-10-15 住友軽金属工業株式会社 Molten metal processing equipment
JPS605828A (en) * 1975-03-28 1985-01-12 スイス、アルミニユ−ム、リミテツド Filter of ceramic foam body and molten metal filtration
JPS60121234A (en) * 1983-11-16 1985-06-28 スイス アルミニウム リミテイツド Molten metal filtration and filter
JPS60238117A (en) * 1984-04-23 1985-11-27 スイス アルミニウム リミテイツド Ceramic filter and its production and use
JP2015536808A (en) * 2012-04-27 2015-12-24 ノルウェージャン ユニバーシティ オブ サイエンス アンド テクノロジー (エヌ ティー エヌ ユー) Apparatus and method for priming a molten metal filter
CN107840677A (en) * 2017-11-10 2018-03-27 南京航空航天大学 A kind of alumina base foamed ceramics and preparation method thereof

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333599A1 (en) * 1975-12-02 1977-07-01 Daussan Henri Casting pipe used between tundish and mould - where pipe has refractory lining which glazes when heated
CA1082894A (en) * 1977-02-22 1980-08-05 John C. Yarwood Method of preparation of ceramic foam
CA1137523A (en) * 1978-08-12 1982-12-14 Tsuneaki Narumiya Ceramic porous body
JPS5556077A (en) * 1978-10-21 1980-04-24 Bridgestone Tire Co Ltd Ceramic porous body
FR2446862B1 (en) * 1979-01-19 1981-06-12 Servimetal
IT1188948B (en) * 1979-08-16 1988-01-28 Southwire Co METHOD AND EQUIPMENT FOR THE PURIFICATION OF A CONTINUOUS COPPER CASTING
US4265659A (en) * 1979-10-09 1981-05-05 Swiss Aluminium Ltd. Molten metal filter
WO1982003339A1 (en) * 1981-03-27 1982-10-14 Hofmann Franz Ceramic filter,method for manufacturing and utilizing this filter
EP0126847A1 (en) * 1984-02-17 1984-12-05 Georg Fischer Aktiengesellschaft Ceramic filter
EP0159963B1 (en) * 1984-04-23 1992-01-29 Alusuisse-Lonza Services Ag Ceramic filter with an open cells foam structure
GB2168336B (en) * 1984-12-12 1988-02-10 Toshiba Ceramics Co A ceramic foam
DE3618284A1 (en) * 1986-05-30 1987-12-03 Steuler Industriewerke Gmbh CARRYING TROUGH FOR INTERCHANGEABLE HIGH-TEMPERATURE METAL MELT FILTERS
CH679746A5 (en) * 1989-01-11 1992-04-15 Fischer Ag Georg
DE4003598A1 (en) * 1990-02-02 1991-08-08 Otto Feuerfest Gmbh METHOD AND DEVICE FOR PRODUCING A CERAMIC FOAM BODY
US5045511A (en) * 1990-02-26 1991-09-03 Alusuisse-Lonza Services, Ltd. Ceramic bodies formed from yttria stabilized zirconia-alumina
DE9110958U1 (en) * 1991-09-04 1991-10-17 Rath (Deutschland) GmbH, 4050 Mönchengladbach filter
DE29809139U1 (en) 1998-05-20 1998-08-13 L. Bregenzer Gießereibedarf GmbH, 70372 Stuttgart Device for filling a casting furnace
FR2839518B1 (en) * 2002-05-13 2004-06-25 Pechiney Rhenalu LIQUID METAL ONLINE PROCESSING DEVICE
JP4459164B2 (en) * 2005-12-27 2010-04-28 三菱電機株式会社 Method for producing ceramic porous body
CZ301535B6 (en) * 2007-06-04 2010-04-07 Švéda@Kamil Insulating, ceramic, porous material and process for producing thereof
GB2569962B (en) 2018-01-04 2022-10-26 Pyrotek Engineering Mat Limited Ceramic foam filter for non-ferrous metals
US20200047247A1 (en) * 2018-08-10 2020-02-13 Les Produits Industriels De Haute Temperature Pyrotek Inc. Filter For The Filtration Of A Liquid Metal
DE102019219234A1 (en) * 2019-12-10 2021-06-10 Volkswagen Aktiengesellschaft Casting arrangement for gravity casting
CN117756502B (en) * 2023-10-18 2026-01-06 江西工陶院精细陶瓷有限公司 A foam ceramic filter plate and its preparation method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111396A (en) * 1960-12-14 1963-11-19 Gen Electric Method of making a porous material
US3524548A (en) * 1968-09-16 1970-08-18 Kaiser Aluminium Chem Corp Filter medium for molten metal
JPS4736062U (en) * 1971-05-06 1972-12-21
JPH039261U (en) * 1989-06-06 1991-01-29

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3097930A (en) * 1960-03-09 1963-07-16 Cons Beryllium Ltd Method of making a porous shape of sintered refractory material
GB916784A (en) * 1960-05-04 1963-01-30 Gen Electric Co Ltd Improvements in or relating to the manufacture of porous ceramic materials
US3090094A (en) * 1961-02-21 1963-05-21 Gen Motors Corp Method of making porous ceramic articles
GB1054421A (en) * 1963-03-07
GB1114385A (en) * 1965-03-29 1968-05-22 Sangotoki Kabushiki Kaisha Manufacture of porous ceramic material
FR1476192A (en) * 1966-04-15 1967-04-07 Corning Glass Works Manufacturing process for porous ceramic articles
US3408180A (en) * 1966-09-12 1968-10-29 Gen Foam Corp Method of producing an inorganic foam and product
GB1439767A (en) * 1972-09-25 1976-06-16 Foseco Int Radiant gas burners
GB1377691A (en) * 1973-01-03 1974-12-18 Foseco Int Porous ceramic materials
CA1028892A (en) * 1973-10-15 1978-04-04 Monarch Marking Systems Selective printing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111396A (en) * 1960-12-14 1963-11-19 Gen Electric Method of making a porous material
US3524548A (en) * 1968-09-16 1970-08-18 Kaiser Aluminium Chem Corp Filter medium for molten metal
JPS4736062U (en) * 1971-05-06 1972-12-21
JPH039261U (en) * 1989-06-06 1991-01-29

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS605828A (en) * 1975-03-28 1985-01-12 スイス、アルミニユ−ム、リミテツド Filter of ceramic foam body and molten metal filtration
JPS5524585A (en) * 1978-08-12 1980-02-21 Bridgestone Corp Ceramic porous body
JPS55111817A (en) * 1979-02-19 1980-08-28 Bridgestone Corp Ceramic porous body
JPS5660618A (en) * 1979-10-23 1981-05-25 Bridgestone Corp Porous ceramic structure
JPS5662509A (en) * 1979-10-30 1981-05-28 Bridgestone Corp Porous ceramic structure
JPS574710A (en) * 1980-06-13 1982-01-11 Mitsubishi Mining & Cement Co Manufacture of ceramic porous body
JPS594409A (en) * 1982-06-10 1984-01-11 スイス・アルミニウム・リミテツド Filter material for filtering molten metal
JPS5943833A (en) * 1982-09-06 1984-03-12 Furukawa Electric Co Ltd:The Method for removing foreign matter in molten copper
JPS5978967A (en) * 1982-10-22 1984-05-08 井上エムテ−ピ−株式会社 Ceramic foam whose average cell size is partially different and manufacture
JPS59149965U (en) * 1983-03-26 1984-10-06 住友軽金属工業株式会社 In-line processing equipment for molten metal
JPS59149966U (en) * 1983-03-26 1984-10-06 住友軽金属工業株式会社 In-line processing equipment for molten aluminum or its alloys
JPS59153362U (en) * 1983-03-31 1984-10-15 住友軽金属工業株式会社 Molten metal processing equipment
JPS60121234A (en) * 1983-11-16 1985-06-28 スイス アルミニウム リミテイツド Molten metal filtration and filter
JPS60238117A (en) * 1984-04-23 1985-11-27 スイス アルミニウム リミテイツド Ceramic filter and its production and use
JP2015536808A (en) * 2012-04-27 2015-12-24 ノルウェージャン ユニバーシティ オブ サイエンス アンド テクノロジー (エヌ ティー エヌ ユー) Apparatus and method for priming a molten metal filter
US9605332B2 (en) 2012-04-27 2017-03-28 Norweigian University Of Science And Technology (Ntnu) Apparatus and method for priming a molten metal filter
JP2018024020A (en) * 2012-04-27 2018-02-15 ノルウェージャン ユニバーシティ オブ サイエンス アンド テクノロジー (エヌ ティー エヌ ユー) Apparatus and method for priming molten metal filter
CN107840677A (en) * 2017-11-10 2018-03-27 南京航空航天大学 A kind of alumina base foamed ceramics and preparation method thereof

Also Published As

Publication number Publication date
NO150165C (en) 1984-08-29
CH622230A5 (en) 1981-03-31
YU78276A (en) 1983-04-27
NO761038L (en) 1976-09-29
NO801371L (en) 1976-09-29
NO148381C (en) 1983-09-28
NO148381B (en) 1983-06-20
BR7601848A (en) 1976-09-28
FR2305407A1 (en) 1976-10-22
JPS6017563B2 (en) 1985-05-04
FR2305407B1 (en) 1983-01-21
AT365088B (en) 1981-12-10
NL7603208A (en) 1976-09-30
NO150165B (en) 1984-05-21
DE2660717C2 (en) 1990-04-19
DE2613023C2 (en) 1982-11-18
CA1059535A (en) 1979-07-31
YU37100B (en) 1984-08-31
DE2613023A1 (en) 1976-10-07
ATA225376A (en) 1981-05-15
IT1060714B (en) 1982-08-20
NL182289C (en) 1992-10-16

Similar Documents

Publication Publication Date Title
JPS51142162A (en) Ceramic foam filter* manufacturing method therefor*and method of filtrating molten metals by using said filter
JPS51111465A (en) Method of making sandwitch structure of metals
JPS5221010A (en) Method of sintering refractories
GB2053710B (en) Apparatus for the filtration of molten metal
GB2008427B (en) Filtration of molten metal
JPS51142600A (en) Method of and apparatus for producing filter cigarette
JPS51135802A (en) Method and apparatus for filtration of molten metals
JPS532340A (en) Method of making casting piece having minute solidification structure
JPS5231899A (en) Method of and apparatus for cigarette filter and molding metal dies
JPS51111867A (en) Method of producing filter
JPS529632A (en) Method of casting molten metal
JPS5218731A (en) Production method of solidified slag
JPS5348928A (en) Ceramic casting and method of making it
JPS5443907A (en) Method of making porous ceramic
JPS5252126A (en) Method of continuous casting
JPS5425219A (en) Method of making casting sand
JPS5258713A (en) Method of burning ceramic parts
JPS5220963A (en) Method of manufacturing precious metal powder
JPS5249230A (en) Method of manufacturing solidified carbon
JPS5339223A (en) Method of producing solid precious metal sensitizing composition
JPS5257027A (en) Method of continuous casting
JPS5256007A (en) Method of producing heattresisting corrosionnresistant sintered alloy
JPS5262132A (en) Method of making ingot
JPS51129456A (en) Method of making metal mold
JPS52141289A (en) Method of making xxray filters