Andre Hirano

Abstract:

ThyssenKrupp CSA Blast Furnaces are 3000mA³ class furnaces that have a unique profile configuration, which imposes different understandings of hearth conditions. Although the constant effort for gas flow and process heat balance stabilization, variations in the Blast Furnace operation are frequent, commonly related to hot metal and slag tapping cycles. Thereby control the liquid flow in the hearth has great influence on transport phenomena and fluctuations on the burden descent and the unusual liquid flow should be evaluated in order to control temperatures and wear. The understanding of these effects is very important to the BF performance and life spam. The coke particle size distribution shows a significant influence on the liquid flow line. Therefore, measures to change the philosophy of burden distribution were taken with a focus on control of peripheral flow. This paper shows a brief review of hearth phenomena and the results noticed at TKCSAA's Blast Furnaces.