PRODUCTION OF INORGANIC PLATY BODY

• Main Authors: KOBAYASHI TAKAYUKI, NAGANO TOMOMI, SAKAMOTO KAZUHIRO, YOSHIMOTO KENICHI
• Format: Patent
• Language: English
• Published: 21.12.1990
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; REFRACTORIES; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

PURPOSE:To efficiently produce a thin type inorganic platy body which has low water absorption percentage and high yield strength by preparing the kneaded mixture of cement, inorganic granular material excepting cement, a dispersant and water in the specified conditions and extruding the kneaded mixture and cutting the molded body, pressurizing and stretching it. CONSTITUTION:An inorganic mixture is prepared which is made of both cement (portland cement having about 0.5-100mum particle diameter) and inorganic granular material (silica dust and fine sand, etc.) having <=100mum particle diameter excepting cement and incorporates cement at the rate of 20-60wt.%. A kneaded material is prepared by adding both 1-5wt.% dispersant (purified lignin sulfonic acid, etc.) and 5-20wt.% water to the inorganic mixture and kneading this mixture. The kneaded material is extruded to form a prescribed cross-sectional shape. This molded body is out to the prescribed length and pressurized by a top force and a bottom force and stretched to mold it into a plate. This plate is aged in an aging chamber in the constant conditions. Thereby the inorganic platy body for building is obtained which has stabilized dimension and is large in hardness and mechanical strength and excellent in durability.