GB1425034A - Diffuser casting - Google Patents

Diffuser casting

Info

Publication number
GB1425034A
GB1425034A GB1159072A GB1159072A GB1425034A GB 1425034 A GB1425034 A GB 1425034A GB 1159072 A GB1159072 A GB 1159072A GB 1159072 A GB1159072 A GB 1159072A GB 1425034 A GB1425034 A GB 1425034A
Authority
GB
United Kingdom
Prior art keywords
core
diffuser
refractory
firing
cast
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.)
Expired
Application number
GB1159072A
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.)
Morgan Refractories Ltd
Original Assignee
Morgan Refractories Ltd
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 Morgan Refractories Ltd filed Critical Morgan Refractories Ltd
Priority to GB1159072A priority Critical patent/GB1425034A/en
Priority to US340199A priority patent/US3881709A/en
Priority to IT4874873A priority patent/IT984271B/en
Priority to DE2333029*A priority patent/DE2333029C3/en
Priority to NO980/73A priority patent/NO133039C/no
Priority to FR7308941A priority patent/FR2176007B1/fr
Publication of GB1425034A publication Critical patent/GB1425034A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
    • 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
    • C22B21/00—Obtaining aluminium
    • C22B21/06—Obtaining aluminium refining
    • C22B21/064—Obtaining aluminium refining using inert or reactive gases

Abstract

1425034 Refractory diffuser element MORGAN REFRACTORIES Ltd 7 March 1973 [13 March 1972] 11590/72 Heading B5A [Also in Division F4] A cast refractory diffuser, for feeding gas, e.g. nitrogen into molten aluminium or other fluid material at high temperature, e.g. during purification thereof, comprising a tubular inlet stem integral with a hollow, gas-permeable outlet head extending laterally from the stem is made using, at least for the outlet head, a compressible fugitive casting core which maintains its shape during casting of the refractory from an aqueous mix but yields to shrinkage of the cast during drying and commencement of firing and is destroyed before completion of firing. The refractory may be silicon carbide bonded with carbon, alumina or clay, but is preferably a zirconia-mullite bonded silicon carbide. It may be cast in apparatus, Fig. 3, comprising plaster mould parts 7, 8 each having a cavity 9, 10 which together define the cavity for the diffuser to be produced and base 11, through which passes a withdrawable metal core 12, 15 to form the bore of the inlet stem. At its top, core 12 has a dowel 13 to locate in a socket 14 in a compressible, combustible core 15 forming the interior of the diffuser head. Core 15 is located by pins 16 withdrawable through holes 17. Core 15 is preferably a cellular plastics material, e.g. rigid polyurethane which leaves only a small residue on firing.
GB1159072A 1972-03-13 1972-03-13 Diffuser casting Expired GB1425034A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1159072A GB1425034A (en) 1972-03-13 1972-03-13 Diffuser casting
US340199A US3881709A (en) 1972-03-13 1973-03-12 Diffuser castings
IT4874873A IT984271B (en) 1972-03-13 1973-03-12 IMPROVEMENT OF REPRACTORY MATERIAL DEVICES FOR THE PRODUCTION OF GAS IN HIGH TEMPERATURE ZONES AND RELATED PRODUCTION PROCESS
DE2333029*A DE2333029C3 (en) 1972-03-13 1973-03-12 Process for producing a temperature-resistant distributor for supplying and distributing gases
NO980/73A NO133039C (en) 1972-03-13 1973-03-12
FR7308941A FR2176007B1 (en) 1972-03-13 1973-03-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1159072A GB1425034A (en) 1972-03-13 1972-03-13 Diffuser casting

Publications (1)

Publication Number Publication Date
GB1425034A true GB1425034A (en) 1976-02-18

Family

ID=9989037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1159072A Expired GB1425034A (en) 1972-03-13 1972-03-13 Diffuser casting

Country Status (5)

Country Link
US (1) US3881709A (en)
DE (1) DE2333029C3 (en)
FR (1) FR2176007B1 (en)
GB (1) GB1425034A (en)
NO (1) NO133039C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539621C1 (en) * 1995-10-16 1997-06-05 Bayer Ag Gas injection stirrer for refining molten light metal
US6199836B1 (en) 1998-11-24 2001-03-13 Blasch Precision Ceramics, Inc. Monolithic ceramic gas diffuser for injecting gas into a molten metal bath
WO2004111281A2 (en) * 2003-06-11 2004-12-23 Porvair Plc Compact micro-porous media device degassing molten metal
US7585455B2 (en) * 2005-12-06 2009-09-08 Porvair Plc Compact micro-porous media degasser
US20140210144A1 (en) * 2013-01-31 2014-07-31 Pyrotek Composite degassing tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594735A (en) * 1949-04-12 1952-04-29 Ernest W Crumley Angle head abrasive blast nozzle
US2724160A (en) * 1951-06-08 1955-11-22 Int Alloys Ltd Method of reducing shrinkage defects in metal castings
FR1183569A (en) * 1957-09-30 1959-07-09 Siderurgie Fse Inst Rech Porous concrete parts for directed blowing of a fluid
US3503597A (en) * 1967-02-20 1970-03-31 Kessler Harry Harvey Metal treating device
GB1374586A (en) * 1971-10-08 1974-11-20 British Aluminium Co Ltd Apparatus for introducing gas into liquid metal

Also Published As

Publication number Publication date
DE2333029A1 (en) 1973-12-06
NO133039C (en) 1976-02-25
DE2333029C3 (en) 1975-11-13
FR2176007B1 (en) 1978-08-04
DE2333029B2 (en) 1975-04-03
US3881709A (en) 1975-05-06
FR2176007A1 (en) 1973-10-26
NO133039B (en) 1975-11-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930306