DOREL RADU, ZENO GHIZDAVET, ANDREEA DAVID THE INFLUENCE OF FUEL SELECTION ON SOME THERMO-TECHNOLOGICAL PARAMETERS OF THE ROTARY KILN
The continuous development of the cement industry, for a foreseeable time horizon as well, is accompanied by a series of problems related to the use of fuels. Some of these inherent difficulties, which accompany in an objective way the cement production, were partly solved by using alternative fuels coming from various sources. Usually, what is taken into account is the technological compatibility between these alternative fuels and the materials that are processed in the clinkering plant. Sometimes the environmental issues are being considered as well. However, the thermo technical particularities of the fuel combustion are seldom dealt with. In this article, is presented a first attempt to evaluate the radiative heat transfer of the combustion gases in a clinkering plant. Various types of fuels are being analyzed, fuels that are already used or that could be used in cement production.
Keywords: rotary kiln, heat transfer, emissive power