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BURNED ALUMINA FINE POWDER, AND METHOD FOR PRODUCTION THEREOF
PROBLEM TO BE SOLVED: To provide burned alumina fine powders capable of reducing the content of a soda component with simple method and also capable of relatively increasing a specific surface area.SOLUTION: There is provided the burned alumina fine powder in which a porous alumina layer 15A comprising an alumina-precipitated crystal 15a is formed on the surface of an alumina fine particle (carrying particle) 13A. The burned alumina fine powder is produced through: a spraying process of spraying a crystal precipitation agent on a material comprising the alumina fine particle (alumina fine powder) while cracking, and regulating the particle size to form the covering layer 15 of the crystal precipitation agent on the surface of the alumina fine particle 13; and a burning process of burning the material after spraying to obtain an aluminum compound in the covering layer 15 of the crystal precipitation agent as the alumina-precipitated crystal 15a to form the porous alumina layer 15A.
【課題】簡単な方法により、ソーダ成分を低減できるとともに、比表面積も相対的に増大させることができるアルミナ微粉焼成物を提供すること。【解決手段】アルミナ微粉焼成物。アルミナ微粒子（担持粒子）１３Ａの表面に、アルミナ析出結晶１５ａからなる多孔質アルミナ層１５Ａが形成されている。このアルミナ微粉焼成物は、アルミナ微粒子からなる原料（アルミナ微粉体）からなるに対して、解砕しながら結晶析出剤を噴霧するとともに整粒してアルミナ微粒子１３の表面に結晶析出剤の被覆層１５を形成するとともに整粒する噴霧工程と、該噴霧後原料を焼成して結晶析出剤の被覆層１５におけるアルミニウム化合物をアルミナ析出結晶１５ａとして多孔質アルミナ層１５Ａを形成する焼成工程とを経て製造する。【選択図】図１
BURNED ALUMINA FINE POWDER, AND METHOD FOR PRODUCTION THEREOF
PROBLEM TO BE SOLVED: To provide burned alumina fine powders capable of reducing the content of a soda component with simple method and also capable of relatively increasing a specific surface area.SOLUTION: There is provided the burned alumina fine powder in which a porous alumina layer 15A comprising an alumina-precipitated crystal 15a is formed on the surface of an alumina fine particle (carrying particle) 13A. The burned alumina fine powder is produced through: a spraying process of spraying a crystal precipitation agent on a material comprising the alumina fine particle (alumina fine powder) while cracking, and regulating the particle size to form the covering layer 15 of the crystal precipitation agent on the surface of the alumina fine particle 13; and a burning process of burning the material after spraying to obtain an aluminum compound in the covering layer 15 of the crystal precipitation agent as the alumina-precipitated crystal 15a to form the porous alumina layer 15A.
【課題】簡単な方法により、ソーダ成分を低減できるとともに、比表面積も相対的に増大させることができるアルミナ微粉焼成物を提供すること。【解決手段】アルミナ微粉焼成物。アルミナ微粒子（担持粒子）１３Ａの表面に、アルミナ析出結晶１５ａからなる多孔質アルミナ層１５Ａが形成されている。このアルミナ微粉焼成物は、アルミナ微粒子からなる原料（アルミナ微粉体）からなるに対して、解砕しながら結晶析出剤を噴霧するとともに整粒してアルミナ微粒子１３の表面に結晶析出剤の被覆層１５を形成するとともに整粒する噴霧工程と、該噴霧後原料を焼成して結晶析出剤の被覆層１５におけるアルミニウム化合物をアルミナ析出結晶１５ａとして多孔質アルミナ層１５Ａを形成する焼成工程とを経て製造する。【選択図】図１
BURNED ALUMINA FINE POWDER, AND METHOD FOR PRODUCTION THEREOF
アルミナ微粉焼成物及びその製造方法
SHIMOZATO JUNYA (author) / TAKAHASHI AKIRA (author) / NAKAMURA TAKAHIKO (author) / TAMURA NORIYUKI (author)
2015-06-08
Patent
Electronic Resource
Japanese
IPC:
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
B01J
Chemische oder physikalische Verfahren, z.B. Katalyse oder Kolloidchemie
,
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
/
C04B
Kalk
,
LIME
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