【発明の名称】微細α-アルミナ粉末の製造方法

Title:

【発明の名称】微細α-アルミナ粉末の製造方法

Document Type and Number:

Japanese Patent JP2586609

Kind Code:

B2

Abstract:

PURPOSE:To obtain the title powder having superior hardness characteristics, polishing characteristics and sinterability and uniform in size by turning aluminum trichloride into gamma-alurmina powder, which is then granulated to a specified size and calcined. CONSTITUTION:Aluminum trichloride is brought into a reaction in an oxyhydrogen flame and the resulting gamma-alumina powder is granulated to >=10mum size and calcined. By this method, fine alpha-alumina powder of <=1mum size is obtd. When the gamma-alumina powder is granulated to <10mum size, the conversion of gamma-alumina into a alumina is not accelerated by granulation. The max. size is not limited but is usually <=5mm in practical production.

More Like This:

JP2011202193	METHOD FOR RECOVERING VALUABLE COMPONENT IN STEEL SLAG
JP5780588	α-Aluminum oxide precursor sol, its production method, and yttrium aluminum garnet production method
JP2007229562	HYDROGEN SEPARATION MEMBRANE AND ITS MANUFACTURING METHOD

Inventors:

YOSHIZUMI MOTOHIKO
ARAI HIDEO

Application Number:

JP27525688A

Publication Date:

March 05, 1997

Filing Date:

October 31, 1988

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MITSUBISHI MATERIALS CORP

International Classes:

C01F7/02; C01F7/30; (IPC1-7): C01F7/30; C01F7/02

Attorney, Agent or Firm:

Shoichi Hirose (1 person outside)

Previous Patent: 溶解炉の原料装入口用シール弁構造

Next Patent: ファイル作成方式