GB1440559A - Manufacture of cdramic powders - Google Patents

Manufacture of cdramic powders

Info

Publication number
GB1440559A
GB1440559A GB271075A GB271075A GB1440559A GB 1440559 A GB1440559 A GB 1440559A GB 271075 A GB271075 A GB 271075A GB 271075 A GB271075 A GB 271075A GB 1440559 A GB1440559 A GB 1440559A
Authority
GB
United Kingdom
Prior art keywords
atmosphere
suspension
jan
ceramic powder
gaseous atmosphere
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
GB271075A
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.)
Siemens AG
Original Assignee
Siemens 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 DE19742403900 external-priority patent/DE2403900B2/en
Priority claimed from DE19742459144 external-priority patent/DE2459144A1/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1440559A publication Critical patent/GB1440559A/en
Expired legal-status Critical Current

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
    • C04B35/26—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 ferrites
    • 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
    • C04B35/26—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 ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • 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
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • 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
    • C04B35/64—Burning or sintering processes

Abstract

1440559 Ceramic powder production SIEMENS AG 22 Jan 1975 [28 Jan 1974 13 Dec 1974] 2710/75 Heading C1J A ceramic powder (e.g. a ferrite, titanate, garnet or zirconate) is made by forming a suspension of at least one metal oxide and/or metal hydroxide and/or metal carbonate in a liquid, atomizing the suspension into a gaseous atmosphere locally heated so that the maximum temperature present is 700‹ to 1100‹C. and subjecting the atomized material to a heat treatment in the gaseous atmosphere for a mean dwell time of 15-150 seconds. The gaseous atmosphere may be oxidizing, reducing or neutral. A temperature gradient may be established in the atmosphere and the suspension atomized into the atmosphere in the direction of increasing temperature. The particles may be constrained to perform a circular motion in the atmosphere. The examples describe the production of MnZnTi, and MnZn ferrites.
GB271075A 1974-01-28 1975-01-22 Manufacture of cdramic powders Expired GB1440559A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742403900 DE2403900B2 (en) 1974-01-28 1974-01-28 Process for the production of pre-sintered electroceramic powder masses
DE19742459144 DE2459144A1 (en) 1973-12-22 1974-12-14 DEVICE FOR PRODUCING AN EMERGENCY FLOW OF AN ACTUATING LIQUID ON AUTOMATIC COOLING CONTROLLERS

Publications (1)

Publication Number Publication Date
GB1440559A true GB1440559A (en) 1976-06-23

Family

ID=25766523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB271075A Expired GB1440559A (en) 1974-01-28 1975-01-22 Manufacture of cdramic powders

Country Status (1)

Country Link
GB (1) GB1440559A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627624A1 (en) * 1988-02-23 1989-08-25 Europ Composants Electron Nickel-contg. manganese-zinc ferrite - with low total loss, useful for power applications
CN115415532A (en) * 2022-09-05 2022-12-02 先导薄膜材料（广东）有限公司 Cadmium powder and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627624A1 (en) * 1988-02-23 1989-08-25 Europ Composants Electron Nickel-contg. manganese-zinc ferrite - with low total loss, useful for power applications
CN115415532A (en) * 2022-09-05 2022-12-02 先导薄膜材料（广东）有限公司 Cadmium powder and preparation method thereof

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee