Used as a neutralizing agent for PH Control in the mining industry’s metallurgical processes and chemical industries.

Calcination
Lime is produced in a thermal process known as calcination according to the reaction.
CaCO3 + Heat  =  CaO  +  CO2
Heat causes the calcium carbonate to lose a molecule of carbon dioxide. The end product is calcium Oxide, better known as unslaked lime or quicklime.
At Ndola Lime this process is achieved in oil-fired rotary and vertical kilns.

Uses Of Quicklime
Metallurgical Processes
In metallurgical processes lime is used for PH control, acid neutralisation and effluent disposal. The Mines are largest user of quicklime.

 Calcium Carbide Manufacture
Quicklime is used in making calcium carbide, which is an important source of acetylene. The lime is mixed with coke and heated to 2000c producing molten carbide. Upon solidifying, carbide is ground and generated into acetylene by addition of water.

 

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