DEPHOSPHORIZATION MATERIAL PRODUCED BY UTILIZING BUILDING WASTE

摘要

PROBLEM TO BE SOLVED: To provide a dephosphorization material which enables effective utilization of building waste and has high performance and is environmentally favorable and also, can be produced at a low cost as a product. SOLUTION: This dephosphorization material consists of building waste which contains calcium silicate hydrate and has a 0.5 to 15 mm average grain size and is produced by crushing the building waste into grains having a 0.5 to 15 mm average grain size, and used in that grainy form. Alternative production of the dephosphorization material comprises: mixing at least one material of crushed materials and ground powders, each formed from building waste, with a mixture of a calcareous raw material and a siliceous raw material and added water; granulating the resulting mixed material into granular formed bodies; and subjecting the granular formed bodies to autoclave curing.