QUALITY CONTROL METHOD FOR BLAST FURNACE AIR-COOLED SLAG

PROBLEM TO BE SOLVED: To provide a method of quickly and simply discriminating the quality of blast furnace air-cooled slag which is effective for improving the fluidity preserving capability of concrete and reducing hazardous metallic substances such as hexavalent chromium. SOLUTION: The method con...

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Bibliographic Details
Main Authors MAEDA ETSUTAKA, UEKI YASUTOMO, HIGUCHI TAKAYUKI, MORIOKA MINORU, CHIKADA TAKAO
Format Patent
LanguageEnglish
Published 11.11.2004
Edition7
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a method of quickly and simply discriminating the quality of blast furnace air-cooled slag which is effective for improving the fluidity preserving capability of concrete and reducing hazardous metallic substances such as hexavalent chromium. SOLUTION: The method controls blast furnace air-cooled slag powder by measuring the oxidation-reduction potential, which is an indicator indicative of reducing power of a substance, of the blast furnace air cooled slag powder, and determining the quality of the blast furnace air-cooled slag powder by analyzing an eluted content of non-sulfuric-acid type sulfur. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030114832