PRODUCTION OF ARTIFICIAL LIGHTWEIGHT AGGREGATE

PURPOSE:To produce lightweight artificial aggregate having the absolute dry sp. gr. equal to or lower than the absolute dry sp. gr. of shale. CONSTITUTION:The coal ashes from a hopper 1 and the crushed cavity forming materials from a hopper 2 are kneaded together with water 3' in a mixing machi...

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Bibliographic Details
Main Authors KAI TOSHIO, SERA TOSHIKUNI, FUJIWARA KUNIHISA
Format Patent
LanguageEnglish
Published 05.09.1995
Edition6
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
DISPOSAL OF SOLID WASTE
LIME, MAGNESIA
METALLURGY
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINED SOIL SOIL
REFRACTORIES
SLAG
TRANSPORTING
TREATMENT OF NATURAL STONE
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Summary:PURPOSE:To produce lightweight artificial aggregate having the absolute dry sp. gr. equal to or lower than the absolute dry sp. gr. of shale. CONSTITUTION:The coal ashes from a hopper 1 and the crushed cavity forming materials from a hopper 2 are kneaded together with water 3' in a mixing machine 3 and the mixture is pelletized by a pan type pelletizing machine 4. The resulted pellet nuclei are charged into a pan type pelletizing machine 6 where the kneaded matter of the coal ashes and water sent from the kneading machine 16 is coated and two-layered pellets are formed. The two-layered pellets obtd. in such a manner are charged together with the calcined pellets supplied from a hopper 8' for charging bedding pellets into calcination furnace 9 isolated from the atm. These pellets are calcined under the regulated concn. of O2 in the calcination furnace, by which the lightweight artificial aggregate is obtd.
Bibliography:Application Number: JP19940020989