Artículos de revistas
CALCINED SLUDGE SINTERING EVALUATION BY HEATING MICROSCOPY THERMAL ANALYSIS
Fecha
2009Registro en:
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, v.95, n.3, p.985-989, 2009
1388-6150
10.1007/s10973-008-9115-y
Autor
DWECK, J.
MORAIS, L. C.
FONSECA, M. V. A.
CAMPOS, V.
BUECHLER, P. M.
Institución
Resumen
Aiming the use of the sewage sludge produced in one of the largest Brazilian wastewater treatment stations as a raw material for the ceramic industry, the sintering process of the ashes produced from its calcination was evaluated by heating microscopy thermal analysis (HMTA). From the microprocessed images, a method was developed to obtain HMTA dimensional change curves as a function of temperature, equivalent to those usually obtained from dilatometers or by thermomechanical analysis (TMA). The final product after sintering at 1050 degrees C, characterized by X-ray fluorescence spectrometry, scanning electron microscopy and X-ray dispersive energy, indicates the presence of a vitreous phase containing phosphorus, which explains the good sintering properties of the studied calcined sludge, as shown from its HMTA dimensional change curve.