Ceramics-Silikáty 35, (2) 97 - 112 (1991)

The present study deals semi quantitatively with two cases of flow arrangement by means of bubbling, and with, the effect of the arrangement on specific power consumption and the throughput of the melting zone. The arrangements consisted of several transverse rows of bubbling nozzles in the melting zone, and of one longitudinal row along the melting zone axis respectively. The results indicate a very favourable effect of such arrangement on the melting characteristics as well as on the melting conditions: the power consumption was significantly reduced and the throughput substantially increased, so that the melting temperature could have been decreased; However, an investigation of the two cases likewise revealed some problems and restrictions which can only be resolved on the basis of a precise knowledge of the flow arrangement. This is why the way leads to mathematical models of melting zones which will allow the problems to be resolved in a general manner.