Development of a Small-Scale Oil Fired Furnace for Refractory Lining Temperature Distribution Evaluation

P. B. Mogaji, I. A. Famurewa, A. A. Olalere, Olurotimi Akintunde Dahunsi

Abstract


Metallurgical furnace is the bedrock of modern production processes. Assessment of temperature distribution across the refractory lining materials is essential in the study of the performance and life span of the refractory material. In this work, a 50 kg capacity spent engine oil fired crucible furnace was constructed from locally sourced materials. A total of twelve (12) thermocouple probes were embedded in the refractory lining wall at predetermined intervals. The probes nearer to the surface (that is, S11, S21 and S31) presented temperatures that rose steeply and peaked between approximately 409.75 and 655.50 oC while the temperatures registered by the other probes inside the lining wall were all less than 100 oC. The firing of the furnace lasted for 1 hour and 10 minutes. Supply of fuel was momentarily disturbed at the 17th and 57th minutes. The probes showed that the intensity heat was higher close to the mid-section of the combustion chamber. The heat generated was sufficient to melt Al-Si alloy scrap metals that was used to cast items of several shapes. The heat retentions between the furnace cover and the upper layers of the combustion chamber at level S3 made the region to gain more heat than level S1. 


Keywords


Furnace, Assessment, Sensors, Real time, Temperature

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References


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