Steel Furnace Temperature Optimization for Wasted of Scale Reduction During Reheating Process by Experimental Design
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Abstract
In the hot rolling steel mill industry, substantial energy resources are consumed, and significant amounts of waste are produced. One notable waste product is scale formation, or iron oxide, on the surfaces of billets. Minimizing and properly treating this scale is crucial, as its disposal in landfills can lead to leachate contamination of groundwater and soil. The rate of scale growth increases with higher furnace temperatures. This study employs experimental design to investigate the impact of different furnace zone temperatures on scale formation. Scale thickness was measured and analysed using analysis of variance (ANOVA). The results indicated that the temperatures in the heating and soaking zones significantly affect the scale growth rate, while the preheating zone temperature does not, within a 95% confidence interval. Optimizing the temperatures reduced the scale thickness from 0.764 mm to 0.467 mm, with a 95% confidence interval. Overall, the waste from scale was reduced from 2.29% to 1.22%.
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References
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