METHOD FOR EFFICIENTLY USING SHELL

PROBLEM TO BE SOLVED: To provide a method for efficiently using a shell, capable of treating a large amount of shell wastes which cannot be treated conventionally in the large amount without depending on waste disposal by land reclamation or incineration disposal, and allowing conversion to a substa...

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Bibliographic Details
Main Authors NAKAMURA AKINORI, SABAYASHI TAKASHI, NAGATA HIROSHI, FUCHIGAMI SATOSHI, KATO HIROYOSHI
Format Patent
LanguageEnglish
Published 06.12.2012
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:PROBLEM TO BE SOLVED: To provide a method for efficiently using a shell, capable of treating a large amount of shell wastes which cannot be treated conventionally in the large amount without depending on waste disposal by land reclamation or incineration disposal, and allowing conversion to a substance efficiently used after treated.SOLUTION: A powder mixture of shell powder and a coal ash is obtained by pulverizing the shell to be mixed with the coal ash, and/or by pulverizing the shell and the coal ash after mixed, and is fired at a temperature of 1,000-1,400°C, to be brought into a fired product containing anorthite (CaO-AlO-2SiO). A ratio of the anorthite in the fired product gets higher therein when a chemical composition of the powder mixture contains 34-63 mass% of SiO, 22-42 mass% of AlO, and 12-28 mass% of CaO, (in particular, contains 40-55 mass% of SiO, 27-37 mass% of AlO, and 15-23 mass% of CaO). The fired product containing the anorthite is efficiently used as an admixture for cement and fine aggregate therefor.
Bibliography:Application Number: JP20110105796