Air volume configuration for titanium dioxide calcination rotary kilns
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I would like to ask the experts how the air volumes for the primary and secondary air in the rotary kiln used for titanium dioxide calcination should be set, given that the fuel is natural gas
Primary air is used for combustion, while secondary air serves as a means for heat transfer; the details are up to you to understand
Actually, it mainly depends on the air supply requirements for combustion in your burner. The primary air volume is sufficient to ensure proper combustion and the desired shape of the flame, while the secondary air serves to regulate the temperature in the combustion or mixing chamber as well as throughout different sections of the kiln. Another consideration regarding secondary air is its role in protecting the walls of the combustion mixing chamber; thus, the minimum air volume must be sufficient to maintain the lowest operating speed of the rotary kiln you have designed. Generally 1500 m³/hour