Energy Efficiency of High Temperature Tunnel Kilns
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The tunnel kiln is the heart of many refractory plants. Over the last two decades both service and maintenance have increasingly been neglected. This regrettable lapse is an often short-sighted response to strong international competition and the price pressures of the market. This article addresses some principles and methods to optimize the energy efficiency of a tunnel kiln by common sense measures that observe the inherent limits of the technology.