... It can be divided into coal-fired calcinator, gas-fired calcinator, oil-fired calcinator and electrothermal calcinator by energy sources ... type and customized according to material requirements.Gas-fired calcinator mainly consists of shell, burner, hearth, ... petrochemical, inorganic chemical, metallurgy, etc. Mainly application: oil refining catalyst, zeolite molecular sieve, active carbon adsorbent, ...