FIELD: heating of kilns of refractory and ceramic materials production. SUBSTANCE: secondary air at a temperature of 700-1400 C, 0.1-0.2 cu.m/MJ of fuel energy, is mixed in the fuel-air mixture containing 0.1-0.2 cu.m of primary air per MJ of fuel energy. The primary air is heated to a temperature of 200-400 C, and the secondary air is fed to the burners for burning at temperature of 700-1000 C and/or through the kiln passage at temperature of 1000-1400 C. EFFECT: reduced consumption of fuel for roasting of articles in the tunnel kiln, and enhanced roasting temperature. 4 cl, 1 ex
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Authors
Dates
2001-04-27—Published
2000-02-15—Filed