论文信息 - Effect of heating temperature on the sintering characteristics of sewage sludge ash.

Effect of heating temperature on the sintering characteristics of sewage sludge ash.

This study investigated and analyzed the effects of the heating temperature on the properties of the sintered sewage sludge ash. The results indicated that the water absorption rate of the sintered sewage sludge ash samples decreased when the firing temperature was increased from 800 to 900 degrees C. When the heating temperature reached 1000 degrees C, the absorption rate decreased significantly. The bulk density of the sewage sludge ash samples increased by 2.3g/cm3 when the heating temperature was increased from 900 to 1000 degrees C, indicating that the densification was affected by heating. The porosity of the sintered sewage sludge ash samples ranged from 36% to 39% when the heating temperature ranged from 600 to 900 degrees C. The least porosity occurred at 1000 degrees C; the sintered samples were well densified. When the temperature was between 900 and 1000 degrees C, the strength appeared to increase significantly, reaching 2040 kgf/cm2, implying an advance in densification due to sintering. The SEM observations were in general agreement with the trends shown by the density data.

[1] James E. Alleman,et al. Constructive sludge management: biobrick , 1984 .

[2] J. Zarzycki,et al. Glasses and the vitreous state , 1991 .

[3] J. Monzó,et al. Reuse of sewage sludge ashes (SSA) in cement mixtures: the effect of SSA on the workability of cement mortars. , 2003, Waste management.

[4] R. C. Ropp. Inorganic Polymeric Glasses , 1992 .

[5] Kuan-Yeow Show,et al. Clay‐Blended Sludge as Lightweight Aggregate Concrete Material , 1991 .

[6] P. Moszkowicz,et al. Behaviour of ordinary Portland cement during the stabilization/solidification of synthetic heavy metal sludge: macroscopic and microscopic aspects , 1998 .

[7] Vincenzo M. Sglavo,et al. Bauxite ‘red mud’ in the ceramic industry. Part 1: thermal behaviour , 2000 .

[8] H. Spliethoff,et al. Legislative and environmental issues on the use of ash from coal and municipal sewage sludge co-firing as construction material. , 2001, Waste management.

[9] Ismail M. Madany,et al. USE OF SEWAGE SLUDGE ASH IN ASPHALTIC PAVING MIXES IN HOT REGIONS , 1995 .

[10] C. Cheeseman,et al. Properties, microstructure and leaching of sintered sewage sludge ash , 2003 .

[11] A. Bentur,et al. Effect of lightweight fly ash aggregate microstructure on the strength of concretes , 1997 .

[12] K. J. Reid,et al. COMPRESSIVE STRENGTH OF MUNICIPAL SLUDGE ASH MORTARS , 1989 .