In this case, not only the operation of the traction unit, overloaded with a suction of ballast air, but also the use of heat due to a decrease in the initial temperature of heating gases, which increases heat loss with leaving gases. The indicated negative consequences of the air suction increase sharply in importance when their initial (normal) temperature decreases. Therefore, a fully reduction in air leaks into the gas ducts connecting the working chamber with the subsequent heat -controlled installation is of paramount operational value.
A feature of the outgoing production gases as a coolant is the high content of a fusible very polydispersed priest in them with a predominance of small and smallest fractions located in solid, liquid and vaporous states. These special characteristics of technological healing have a significant impact not only on operating conditions, but even on the choice of the direction of heat use.
In the general case, the formation of technological healing may be a consequence: the gas stream of hard particles of the shiht, scale and lining; emissions and removal of liquid drops of technological melt or slag with outgoing gases; partial evaporation (tapping) of technological material. The removal of solid particles is quantitatively determined by their density (volumetric mass), size and shape, as well as the rate of gases in the working chamber and the subsequent gas engine. The cracking of the shiht particles under the influence of internal gas formation and thermal stresses during warming up, as well as cracking and painting lining under the influence of hardening slag and periodic changes in temperature is essential.
This origin of technological healing is most characteristic of the periods of loading the shiht into melting furnaces, as well as
For all fire furnaces, especially with significant blowing (firing in a boiling layer); In such a snare, relatively large particles, measured, are dominated by hundreds of microns.