JPS63166713A - Production of aluminum silicate - Google Patents

Production of aluminum silicate

Info

Publication number
JPS63166713A
JPS63166713A JP31119986A JP31119986A JPS63166713A JP S63166713 A JPS63166713 A JP S63166713A JP 31119986 A JP31119986 A JP 31119986A JP 31119986 A JP31119986 A JP 31119986A JP S63166713 A JPS63166713 A JP S63166713A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
alumina
sio
give
aluminum sulfate
aluminum silicate
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.)
Pending
Application number
JP31119986A
Other versions
JPH0569046B2 (en )
Inventor
Mineo Mizuno
Wataru Otake
Hajime Saito
Masanori Shiraishi
Kozo Yamashita
Original Assignee
Kyoritsu Yogyo Genryo Kk
S T K Ceramics Kenkyusho:Kk
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

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Abstract

PURPOSE: To obtain aluminum silicate in high production efficiency, by blending aluminum sulfate and alumina hydrate as Al2O3 sources with SiO2 source, drying the blend, heat-treating, grinding, classifying and especially carrying out fine powder effectively.
CONSTITUTION: An aqueous solution containing aluminum sulfate having a low impurity content in an amount to give 3W70wt.% alumina and alumina monohydrate in an amount to give 97W30wt.% alumina as Al2O3 sources are uniformly blended with silica powder or silica gel as a SiO2 source. The silica powder used has preferably ≥100m2/g specific surface area. The prepared blended slurry is dried at 80W160°C, heated to ≥700°C, aluminum sulfate is thermally decomposed and the resulting material is heat-treated to form mullite as a main mineral. Further the reaction product is ground and classified to give aluminum silicate having a composition of 15W35wt.% SiO2 and 85W65wt.% Al2O3, ≥5m2/g specific surface area and ≤5μm particle diameter.
COPYRIGHT: (C)1988,JPO&Japio
JP31119986A 1986-12-27 1986-12-27 Expired - Lifetime JPH0569046B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31119986A JPH0569046B2 (en) 1986-12-27 1986-12-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31119986A JPH0569046B2 (en) 1986-12-27 1986-12-27

Publications (2)

Publication Number Publication Date
JPS63166713A true true JPS63166713A (en) 1988-07-09
JPH0569046B2 JPH0569046B2 (en) 1993-09-30

Family

ID=18014292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31119986A Expired - Lifetime JPH0569046B2 (en) 1986-12-27 1986-12-27

Country Status (1)

Country Link
JP (1) JPH0569046B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04154614A (en) * 1990-10-17 1992-05-27 Tosoh Corp Mullite precursor
US6444139B1 (en) 1999-03-17 2002-09-03 Kabushiki Kaisha Toshiba Slurry for CMP and CMP method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04154614A (en) * 1990-10-17 1992-05-27 Tosoh Corp Mullite precursor
US6444139B1 (en) 1999-03-17 2002-09-03 Kabushiki Kaisha Toshiba Slurry for CMP and CMP method
US7364667B2 (en) 1999-03-17 2008-04-29 Kabushiki Kaisha Toshiba Slurry for CMP and CMP method

Also Published As

Publication number Publication date Type
JPH0569046B2 (en) 1993-09-30 grant

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