Judging the height of the material layer
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I’m a novice in the field of double-base alkalis, and I have a simple question: Our company uses external-return alkali rotary calciners – how can we determine the height of the material layer in these calciners? From which aspects should we conduct the judgment and analysis? Thank you all, teachers!
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There is no need to worry about the height of the material layer; it is the height of the outlet baffle that determines it. Loss on ignition and moisture content can reflect the operating condition of the furnace.
The amount of back-alkali is adjusted based on the temperature of the furnace gas at the burner; generally, a temperature of 110–115 degrees for the furnace gas at the burner is sufficient.
The height of the material layer inside the furnace is generally controlled by the discharge baffle at the furnace tail. This usually doesn’t pose any problems during the design of the calcination furnace; if it seems that the material layer is too high, the discharge baffle at the furnace tail can be lowered