公开(公告)号：JPH02296714A

公开(公告)日：1990-12-07

申请号：JP11840089

申请日：1989-05-10

Applicant: AGENCY IND SCIENCE TECHN ,  JINKOU NENDO GOSEI GIJUTSU KEN

Inventor： SHIBAZAKI YASUO ,  MIYAWAKI RITSURO ,  WATAMURA SHINJI ,  MAEDA MASAKI ,  MIZUTA HIROYUKI ,  YAMASHITA YOSHITAKA

IPC: C01B33/26

Abstract: PURPOSE:To produce artificial kaolinite in which plasticity is maintained at high level with superior formation efficiency by carrying out hydrothermal synthesis treatment together with water by using the hydrate of amorphous calcium silicate and the strong acid salt of Al. CONSTITUTION:Hydrothermal synthesis treatment is carried out together with water by using, as raw materials, the hydrate of amorphous calcium silicate and the strong acid salt of Al, such as AlCl3, to obtain kaolinite powder. It is desirable to use, as the hydrate of amorphous calcium silicate, the one having a composition in which the atomic ratio of calcium to silicic acid is regulated to 0.1-2.0. Since the irregular tetrahedron layer of the amorphous Si can be utilized by using the hydrate of amorphous calcium silicate as raw material, kaolinite crystal formation is allowed to occur uniformly and simultaneously over the whole reaction system. Accordingly, sheet-like kaolinite reduced in crystallinity is formed.

公开(公告)号：JPH0768167A

公开(公告)日：1995-03-14

申请号：JP24197193

申请日：1993-09-01

Applicant: AGENCY IND SCIENCE TECHN ,  TOYO DENKA KOGYO KK

Inventor： SHIBAZAKI YASUO ,  YAMASHITA YOSHITAKA ,  KAMORI MASANOBU

IPC: B01D53/28 ,  B01J20/10 ,  C01B33/26

Abstract: PURPOSE:To increase water adsorptivity for high humidity and increase desorptivity of adsorbed water according to decrease in humidity by using serpentine kaolinite and serpentine silica as a humidity controlling material. CONSTITUTION:A salt of strong acid of Al and water are added to serpentine essentially comprising chrysotile and subjected to hydrothermal treatment to obtain solenoidal synthetic kaolinite. The obtd. kaolinite has a small specific surface area as 60m /g so that it has small adsorption and desorption while the relative humidity is low. Further, a strong acid and water are added to serpentine and subjected to hydrothermal treatment to obtain serpentine silica without containing magnesium. The obtd. serpentine silica has a large specific surface area as 102m /g and large adsorption and desorption rate at high humidity. Thereby, the obtd. serpentine kaolinite or serpentine silica acts as a dryer at high humidity and as a humidity controlling material to desorb the water content at low humidity. Moreover, when this material is used for the surface of building material or interior material, humidity in a room can be controlled constant so that the room is made more comfortable and growth of mold or ticks can be suppressed.

公开(公告)号：JPH0624733A

公开(公告)日：1994-02-01

申请号：JP32533391

申请日：1991-11-13

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SHIBAZAKI YASUO ,  ITO HIROSHI ,  TONE YUKIHITO ,  YAMASHITA YOSHITAKA ,  KAMORI MASANOBU

IPC: C01B33/26 ,  C04B38/00

Abstract: PURPOSE:To provide a ceramic porous form having high mechanical strength and excellent air permeability, and to provide laminar kaolinite as the raw material for the above porous form. CONSTITUTION:The objective laminar kaolinite having such structure that boehmite is laminarly crystallized on its surface can be obtained by hydrothermal treatment of a silica-alumina material with a 5-20wt% in excess aluminum compared with the theoretical composition of kaolinite. The other objective ceramic porous body having high mechanical strength and excellent air permeability can be obtained using this laminar kaolinite.

公开(公告)号：JPH11228257A

公开(公告)日：1999-08-24

申请号：JP4878198

申请日：1998-02-13

Applicant: AGENCY IND SCIENCE TECHN ,  TOYO DENKA KOGYO CO LTD ,  SHIBAZAKI YASUO

Inventor： SHIBAZAKI YASUO ,  YAMASHITA YOSHITAKA ,  HAMADA MORINORI ,  KAMORI MASANOBU ,  TAKENAKA HIDEO

IPC: B01D53/70 ,  B28B3/26 ,  C01B39/50 ,  C04B33/13 ,  C04B41/50 ,  C04B41/80 ,  C04B41/85

Abstract: PROBLEM TO BE SOLVED: To produce a readily producible formed product of hydrosodalite having high reactivity with hydrogen chloride gas without collapsing even when brought into contact with a combustion gas at high temperatures and high speeds and to provide a method for producing the formed product of the hydrosodalite. SOLUTION: This formed product of hydrosodalite is produced by adding water to a clay mineral having the plasticity as a raw material, forming the resultant mixture by a means such as compression, extrusion or granulation, then carrying out the drying and baking, providing a raw material formed product, adding caustic soda or sodium carbonate and water to the resultant raw material formed product and conducting heat treatment thereof. The method for producing the formed product of the hydrosodalite is provided. In this case, a mineral consisting essentially of silica or alumina such as a kaolin mineral or smectite is used as the clay mineral having the plasticity. The clay mineral is further mixed with a material selected from quartz sand, fly ash, water glass, a volcanic rock glass, diatomaceous earth, coal ash and aluminum hydroxide to afford the raw material.