Study on the Kinetics of Phosphor-Gypsum Pyrolysis

Abstract:

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In this paper, an Infrared Sulfur Analyzer is set to measure the desulphurization degree during thermal decomposition of phosphor-gypsum, which provides a much quick, convenient, continuous and accurate method. It might be considered as an effective way to study kinetics of phosphor-gypsum (or phosphogypsum) thermal decomposition (or pyrolysis). With the help of this method, the desulphurization degree and desulphurization rate of broadly constituted phosphor-gypsum samples in the temperature range of 1250-1400°C were studied. The experimental results show that the desulphurization degree increase with the rising of temperature in the range of 1250-1300°C quickly, however, this increase is not obvious when the temperature is above 1300°C. Besides, the corresponding regression equations are obtained. The decomposition degree of phosphor-gypsum could be judged according to the regression equations mentioned above.

Info:

Periodical:

Advanced Materials Research (Volumes 306-307)

Edited by:

Shiquan Liu and Min Zuo

Pages:

1477-1483

DOI:

10.4028/www.scientific.net/AMR.306-307.1477

Citation:

M. K. Zhou et al., "Study on the Kinetics of Phosphor-Gypsum Pyrolysis", Advanced Materials Research, Vols. 306-307, pp. 1477-1483, 2011

Online since:

August 2011

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Price:

$35.00

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