Analysis of the formation of the reactionary zone of interaction into the melt in converter aggregate and systematization of equations to determine the depth of its penetration

Abstract

An important aspect in the operation of converters aggregates with top blowing technology is the influence high-temperature reactionary area of interaction on the thermal bricks in the converter aggregate. Provided the formation of irrational depth of penetration of the reactionary zone of interaction, there is a significant intensification of the wear of the thermal bricks on the bottom of the converter. One way to avoid such a phenomenon is a premature prognosis of the peculiarities of the formation of the reactionary zone of interaction and the depth of its penetration into the layers of the volume of metal melt. Today, there are much information about reactionary zone of interaction and equations for calculate it depth of penetration for different methods top and combine blowing technology in the converter. However, to date we need modern representation of the main types of geometric formation of the reactionary zone of interaction in the oxygen converter with top blowing from tuyere. Regardless of the design the multi-nozzles tip and the blowing modes. According to the purpose and tasks of the work, was offered three main types of the geometric formation of the reaction zone of interaction, in the oxygen converter with top blowing technology, regardless of the design of the multi-nozzles tip and the blowing mode: the separate formation of independent reactionary zones of interaction of certain geometric dimensions, the quantity of which is equal to the quantity of oxygen jets that directly act on the surface of the melt and penetrate its layers; the grouped formation of several united independent reactionary zone of interaction formed by the combination of two or more single reactionary zones created by independent oxygen jets; the united formation of one continuous reactionary zone of interaction due to the fusion of the external contours of all single reactionary areas of interaction, formed by independent oxygen jets. Into the single united reactionary zone of the interaction. In addition, was formed collection of equations to determine Lrzv – the depth of penetration of the reactionary zone of interaction of gas (oxygenes) jets into the melt of metal located in the working space of the converter bath. The separation of equations into collections was made according to the type of physical modeling what was used to obtain them. The first selection of equations obtained on the basis of processing the results of experiments with low temperature physical modeling consists of 13 equations. The second selection includes of equations obtained by processing the results with high temperature physical modeling experiments and consists of 7 equations