Lime Kiln

Calcination Is A Thermal Treatment Process In Presence Of Air Applied To Ores And Other Solid Materials To Bring About A Thermal Decomposition, Phase Transition, Or Removal Of A Volatile Fraction. The Calcination Process Normally Takes Place At Temperatures Below The Melting Point Of The Product Materials.

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Calcination Is A Thermal Treatment Process In Presence Of Air Applied To Ores And Other Solid Materials To Bring About A Thermal Decomposition, Phase Transition, Or Removal Of A Volatile Fraction. The Calcination Process Normally Takes Place At Temperatures Below The Melting Point Of The Product Materials.

Calcination Is Different From Roasting, In Which More Complex Gas–solid Reactions Take Place Between The Furnace Atmosphere And The Solids. Calcination Is Carried Out In Furnaces Or Reactors (Sometimes Referred To As Kilns Or Calciners) Of Various Designs Including Shaft Furnaces, Rotary Kilns, Multiple Hearth Furnaces, And Fluidized Bed Reactors To Perform Following Decomposition Of Carbonate Minerals, As In The Calcination Of Limestone To Drive Off Carbon Dioxide; Decomposition Of Hydrated Minerals, As In Calcination Of Bauxite, To Remove Crystalline Water As Water Vapor;Decomposition Of Volatile Matter Contained In Raw Petroleum Coke; Heat Treatment To Effect Phase Transformations, As In Conversion Of Anatase To Rutile Or Devitrification Of Glass Materials Removal Of Ammonium Ions In The Synthesis Of Zeolites Oxidation Of Metals Like Copper And Tin