| 摘要 |
PROBLEM TO BE SOLVED: To provide a treatment method enabling one-process treatment of coal ash possibly containing at least one of hexavalent chromium, arsenic, selenium, fluorine and boron and fixing of these harmful substances in a hardly leaching-out state. SOLUTION: A method of manufacturing a granular product utilizing coal ash comprises adding a reducing agent, lime, cement, a heavy-metal-fixing agent and water to coal ash possibly containing the harmful substance(s), e.g. hexavalent chromium and kneading and granulating the resultant mixture. The granular product and a resource material comprising the product are also provided. COPYRIGHT: (C)2009,JPO&INPIT
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