APPARATUS FOR PRODUCING CONCRETE ADMIXTURE FROM COAL ASH

• Main Authors: KOYAMA TOMONORI, YOSHIDA HIROHISA, UEDA KATSUYUKI, TAKEGAWA TOSHIYUKI
• Format: Patent
• Language: English
• Published: 10.03.1992
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; 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; REFRACTORIES; SLAG; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF NATURAL STONE

PURPOSE:To produce a concrete admixture capable of giving concrete having high strength and good fluidity by heating coal ash with an ultra-high temperature furnace, cooling and condensing the generated vapor to form ultra-fine SiO2 powder and mixing the powder with a slag produced by cooling and crushing molten slag deposited on the furnace bottom. CONSTITUTION:The objective apparatus is provided with an ultra-high temperature furnace 2 to heat coal sash 1 at an ultra-high temperature to generate the vapor of SiO2 and SiO; a collecting apparatus 5 to cool and condense 4 the above vapor generated in the ultra-high temperature furnace 2 and collect the formed ultra-fine SiO2 particles; a cooling and collecting tank 3 to cool and collect molten slag generated in the ultra-high temperature furnace 2; a pulverizer 12 to pulverize the slag collected in the cooling and collecting tank 3; and a mixer 16 for mixing the above collected ultra-fine SiO2 particles 9 and the slag 14 crushed by a fine crusher 12. The symbol 18 is concrete admixture.