Influence of Air Flow, Coke Content and Moisture Content on the Temperature Distribution of the Sintering Bed

Fundamental study of sintering of iron ores-I

Abstract

With respect to Goa hematite ores and Larap magnetite ores as raw materials, the influence of air flow, coke content and moisture content on the temperature distribution of the sintering bed were studied with a small sintering pan.
The results obtained were as follows:
(1) The air flow had an influence on the combustion rate of coke, moving rates of sintering zone and of the cooling zone, and thereby the temperature distribution of the sintering bed was largely varied.
(2) The coke content had an influence on the moving rate of the sintering zone and maximum bed temperature. When the coke content was higher than the optimum, the sintering zone tended to be broadened, yet the maximum bed temperature was little affected. At lower coke content, however, the maximum bed temperature was considerably decreased.
(3) The shape of the temperature-time curve was influenced by the moisture content, but the maximum bed temperature was little affected. The lower the moisture content, the broader the sintering zone and the cooling rate.