138 posts
Re: Using industrial waste for cement burning
wilfredzieri,
Regarding your point (b), the increased gas temperature is mainly due the generally higher flue generation (Nm³/GJ) of alternative fuels as well as their (related) lower heat value (GJ/t).
Consider the heat value first. If it is such that the flame temperature (with air from the cooler) is close to the burning temperature -say 1450°C-, then the capacity of the kiln will drop to zero and the flue gas should exit at 1450°C since the quantity of combustion gas should be infinite to ensure the needed heat exchange.
Concerning the flue gas generation, more gas means more heat to warm up these gases and more heat consumption. At the same time, the heat requirement for the clinkering process does not change, and therefore the gases will leave hotter.
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4 posts
Re: Using industrial waste for cement burning
Hello Sirs,
Its really good to focus on the utilization of wastes in cement plant burning. FLSmidth has come up with the innovation to fire the tyres/solid lumps/any combustible to generate hot gases which in turn utilized for the pre-calcination of raw meal.
The equipment named hotdisc can suit the above features and in addition to that the advanced versions of kiln burners can be adopted to fire alternate fuels within the rotary-kiln.
You can contact us for any further query,
Sabeer Ali,
Customer Services/FLSmidth, Chennai.