Research of Lime-Mediated Sewage Sludge Use as Metallurgy Sintering Ingredients in the Sinter Industry
This paper discusses the feasibility of the lime-mediated sewage sludge replace the fuels and flux as metallurgy ingredients, the influence of lime-mediated sewage sludge used in metallurgy sintering process to the sinter performance. The calorific value of the sludge was 4.67MJ/kg. The X-ray diffraction (XRD) showed that the main existing form of Calcium in the lime-mediated sewage sludge is CaCO3 at 550°C, and almost is CaO at 1100°C. This provided the basis to the sludge used as sintering ingredients. Sintering cup experiment results showed that Lime dry sludge have a positive impact on sintering, the sinter quality indexes are improved. When sludge ratio is 3.00%, the vertical sintering burning rate is 21.28mm/min, the yield is 72.62%, the utilization coefficient is 1.455T/m2•h, fuel consumption from 65.65kg/T fall to 59.16kg/T, then concluded that the flux and fuel ratio replaced by lime-mediated sewage sludge were 43.3%, 13.3% respectively.
Jimmy (C.M.) Kao, Wen-Pei Sung and Ran Chen
Y. Xing et al., "Research of Lime-Mediated Sewage Sludge Use as Metallurgy Sintering Ingredients in the Sinter Industry", Advanced Materials Research, Vols. 581-582, pp. 888-894, 2012