FR2098951A5 - Spheroidal granules of refractory material prodn - by two-stage pulverization of molten raw material - Google Patents
Spheroidal granules of refractory material prodn - by two-stage pulverization of molten raw materialInfo
- Publication number
- FR2098951A5 FR2098951A5 FR7028385A FR7028385A FR2098951A5 FR 2098951 A5 FR2098951 A5 FR 2098951A5 FR 7028385 A FR7028385 A FR 7028385A FR 7028385 A FR7028385 A FR 7028385A FR 2098951 A5 FR2098951 A5 FR 2098951A5
- Authority
- FR
- France
- Prior art keywords
- raw material
- spheroidal
- granules
- prodn
- molten raw
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/653—Processes involving a melting step
Abstract
Refractory oxides and hydrated oxides, and mixtures of such refractories, can be converted into spheroidal granules of predetermined size between about 50 mu and several mm. by a consistently controllable pulverisation process. The raw material is first melted and allowed to run in thin, vertical streams through which are blasted jets of fluid under pressure to break up the streams and smash the material against a wall from which granules fall, taking up spheroidal form under surface tension as they harden and set, usually in a liquid quenching medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7028385A FR2098951A5 (en) | 1970-07-31 | 1970-07-31 | Spheroidal granules of refractory material prodn - by two-stage pulverization of molten raw material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7028385A FR2098951A5 (en) | 1970-07-31 | 1970-07-31 | Spheroidal granules of refractory material prodn - by two-stage pulverization of molten raw material |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2098951A5 true FR2098951A5 (en) | 1972-03-10 |
Family
ID=9059616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7028385A Expired FR2098951A5 (en) | 1970-07-31 | 1970-07-31 | Spheroidal granules of refractory material prodn - by two-stage pulverization of molten raw material |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2098951A5 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2455013A1 (en) * | 1979-04-25 | 1980-11-21 | Electricite De France | Fired refractory fireclay - comprising spherical particles of high refractoriness |
FR2524356A1 (en) * | 1982-03-31 | 1983-10-07 | Leybold Heraeus Gmbh & Co Kg | PROCESS AND DEVICE FOR THE MANUFACTURE OF HIGH PURITY METAL POWDERS WITHOUT CERAMIC MATERIALS |
FR2545202A1 (en) * | 1983-04-29 | 1984-11-02 | Commissariat Energie Atomique | METHOD AND DEVICE FOR COOLING A MATERIAL AND APPLICATION TO THE PRODUCTION OF REFRACTORY MATERIALS BY TEMPERATURE |
FR2548937A1 (en) * | 1983-06-23 | 1985-01-18 | Gen Electric | PROCESS AND APPARATUS FOR MANUFACTURING POWDER ALLOY |
EP0339478A2 (en) * | 1988-04-29 | 1989-11-02 | Norton Company | Process and apparatus for rapid solidification of melted ceramic composition |
-
1970
- 1970-07-31 FR FR7028385A patent/FR2098951A5/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2455013A1 (en) * | 1979-04-25 | 1980-11-21 | Electricite De France | Fired refractory fireclay - comprising spherical particles of high refractoriness |
FR2524356A1 (en) * | 1982-03-31 | 1983-10-07 | Leybold Heraeus Gmbh & Co Kg | PROCESS AND DEVICE FOR THE MANUFACTURE OF HIGH PURITY METAL POWDERS WITHOUT CERAMIC MATERIALS |
FR2545202A1 (en) * | 1983-04-29 | 1984-11-02 | Commissariat Energie Atomique | METHOD AND DEVICE FOR COOLING A MATERIAL AND APPLICATION TO THE PRODUCTION OF REFRACTORY MATERIALS BY TEMPERATURE |
EP0125964A1 (en) * | 1983-04-29 | 1984-11-21 | Commissariat A L'energie Atomique | Process and apparatus for cooling a material and application to the manufacture of refractory materials by tempering |
FR2548937A1 (en) * | 1983-06-23 | 1985-01-18 | Gen Electric | PROCESS AND APPARATUS FOR MANUFACTURING POWDER ALLOY |
EP0339478A2 (en) * | 1988-04-29 | 1989-11-02 | Norton Company | Process and apparatus for rapid solidification of melted ceramic composition |
EP0339478A3 (en) * | 1988-04-29 | 1991-04-10 | Norton Company | Process and apparatus for rapid solidification of melted ceramic composition |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |