汚泥の焼結再資源化プロセスに関する研究(5) : 港湾底泥とペーパースラッジ(PS)灰の混合焼結物のキャラクタリゼーション

概要

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Cooperative research has been carried out to utilize dredged-sludge from Tagonoura Bay. In this fifth report, we studied the characterization of materials sintered at temperatures from 800 to 1220℃ from a mixture of dredged-sludge and paper sludge ashes. The additional effects of adding residual glass dust to the mixture have also been researched. The following results were obtained: (1) The optimum sintering process, with paper sludge ashes only, needs a sintering reaction at temperatures higher than 1200℃, because of the large amount of CaO. (2) The addition of dredged-sludge to paper sludge accelerates the sintering reaction and the optimum sintering temperature decreases to a range of 1150〜1180℃. (3) The addition of glass powder to the mixture accelerates the sintering reaction even more. By sintering at 1170℃, the highest bending fracture strength of 300 kgf/cm^2 was obtained with the 5% addition of glass powder. Based on the characterization results, it is certainly possible to recycle paper sludge to soil and construction materials.
東海大学の論文
2000-03-10