科研之友
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摘要
Purpose: of this paper is the analysis of potential use of new materials in the electric furnace hearth lining and indication of the operating effects for the furnace resulting from their use. The impact of the application of new hearth lining materials on a total power needed to receive through air cooling system of the furnace hearth was also analyzed.Design/methodology/approach: Within the frameworks of research, electric furnace operational properties were compiled and a furnace mathematical model on the basis of the finite element method was created. Based on operational data the created model was calibrated. Analysis of the influence of new hearth lining materials on the furnace operation was performed. In analysis the change of materials properties resulting from the furnace operation over the years was taken into consideration.Findings: As a result of carried out calculations and analysis the amounts of heat flux transferred, in successive periods of operation, through hearth working layer to cooling installations were acquired. Basing on simulations and calculations, for the above mentioned heat flux, temperatures were calculated on the bottom shell of furnace, in the electrodes axes for different periods of furnace operation. Practical implications: To achieve a decrease in thermal load of hearth it is advisable to reduce thickness of filling material near the vertical wall of furnace and filling the acquired space with new graphite blocks applied to the last layer of hearth. Those information were crucial and had an actual impact on a final design of furnace lining.Originality/value: Carried out analysis have crucial meaning for furnace user, as they allow to predict the probable operation of furnace with new lining materials over the years. This will also make it easier to control the state of lining materials wear and will allow for a better process control.
- 出版日期2012
