日本金属学会誌

J. Japan Inst. Metals, Vol. 32, No. 4 (1968),
pp. 379-385

Studies on the Solid-Solid Reaction between PbO and SiO2

Tsutomu Yanagase1, Yukio Suginohara1 and Kiyonori Nakamura2

1Department of Metallurgy, Faculty of Engineering, Kyushu University, Fukuoka
2Yawata Iron and Steel Co., Ltd., Kitakyushu

Abstract:

Studies on the solid-solid reaction of the metallic oxides are of great importance not only for approach to the mechanism of sintering, but also in the field of extractive metallurgy for slag formation. In this paper, the reaction between solid PbO and SiO2 was observed by means of differential thermal analysis with the aid of X-ray diffraction analysis and infrared absorption spectra. It was found that the 2PbO·SiO2 compound appeared at the begining of the reaction, and then PbO·SiO2 or 4PbO·SiO2 compound was formed in accordance with the content of SiO2 in the mixture. Moreover, the activation energy for diffusion of PbO in the silicate was determined from the relation between the temperature of heat treatment and the reaction rate calculated by applying Carter's equation.


(Received 1967/11/7)

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