Dubovkina М. The improvement of hot metal quality increase methods during transfer to the steelmaking unit

There were developed the mathematical models for forecasting the current value of temperature, during transfer of hot metal, with correction of ratio approximation, depending on change of transportation conditions. The developed block diagram of a magement information system will allow to make a decision on performance of technological operations and transportation of ladles in time. The definition technique of ratio the heat-sink ability of lining hot metal ladle car were developed, bassed on the theoretical and experimental research. It is stated that during the exploitation of a ladle at the expense of interaction with hot metal the value of the ration increases and thes reduces the hert-sink propertios jf lining. The received decision of temperature contact lining with melt smelt and thickness of an active layer lining has allowed to offer the new decision for definition of losses of heat on accumulation lining. The offered measures on reduction of heat by hot metal, allow to raise final temperature of metal 250С up. As a result of the analysis of thermodynamic and kinetic conditions influencing the efficiency of desulphuration, the two-step processing in priming ladle is offered: the first step is bylime up to 0,02%S, and then by magnesium.