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1. (WO2014208124) BRICK, TILE, FLOORBOARD, CEILING PANEL, AND ROOFING MATERIAL, AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2014/208124    International Application No.:    PCT/JP2014/054567
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Wed Feb 26 00:59:59 CET 2014
IPC: C04B 35/00
C01G 49/06
C04B 35/26
Applicants: MITSUISHI TAIKA RENGA CO.,LTD.
三石耐火煉瓦株式会社
DOWA F-TEC CO., LTD.
DOWAエフテック株式会社
DOWA ELECTRONICS MATERIALS CO.,LTD.
DOWAエレクトロニクス株式会社
Inventors: MIYAO,Yasumichi
宮尾 保道
KITAMURA,Toshiya
北村 利哉
MISHIMA,Yasunobu
三島 泰信
Title: BRICK, TILE, FLOORBOARD, CEILING PANEL, AND ROOFING MATERIAL, AND METHOD FOR MANUFACTURING SAME
Abstract:
 Provided are an inexpensive brick, etc., naturally exhibiting excellent radiation shielding effects, demonstrating high strength while being chemically stable and not including harmful substances, and also being suitable for use in a facility in which devices affected by magnetic fields are installed. Manufactured are a brick, etc., for constructing a γ-ray shielding structure or constructing an X-ray shielding structure, in which a molding material including hematite in a ratio of at least 90% by mass is molded into a predetermined shape to obtain a molded article, and the molded article is fired, whereby the fired molded article is endowed with a bulk density of at least 2.8 g/cm3, and the fired molded article is endowed with a residual magnetization of 1.0 A∙m2∙g-1 or less.