We have a kiln of 5 m of diameter and 82 m of length. Our thermanl loading in the main burner is 5.3 Gcal/m2/h. I read that increasing the percentage of precalcination and reducing the thermal loading in the main burner the refractory performance can be increased, reaching more than 310 days/year. In our kiln condition, which is a normal performance in days/year?. We use gas as fuel and we have a new burner.
rrbs
you should be achieving in excess of 320 days/year.the degree of calcination can be increased to bring down the thermal loading. but there is a limitation for the % firing and degree of calcination in your calciner.
If u r facing severe problems of refractory failure inspite of your efforts, then check the burner settings.
Raj Sahu
Maximum thermal loading in the dimension kiln can be 5.4Gcal/hr/m2.Higher thermal loading certainly put thermal stress in kiln refractory but refractory solution present for high thermally loaded kilns such as magnesia-zirconium oxide brick for lower transition zone.Optimum degree of calcination we may achieve 90-95%.More than 95% calcination may create jamming prone tendency.We may use 60-65% fuel firing in calciner.Our practical experience indicate that we may achieve kiln running more than 345 days per year.
Regards,
R.M.Sahu,
INDIA
sudheer kumar
can any tel me the formulae for Thermal loading in kiln