CALCINED PETROLEUM COKE

Calcination is a high temperature process in which volatile matters present in Raw Petroleum Coke (RPC) is driven out. The Calcined Petroleum Coke has a fixed carbon of 99.0% which is very suitable for manufacturer of Carbon Electrodes, for use in Aluminum and Steel industries and manufacturer of Carbon paste as well. Process to produce CPC:- The process of Calcination is carried out on a reducing atmosphere inside the Rotary Kiln at temperature of 1250 to 1350 degree Celsius. Thereafter the coke from the kiln is water quenched and air cooled inside the rotary cooler. At present we have two Rotary Kiln CPC unit having production capacity of 100 m.ton per day. The Unit is broadly divided into three sections:- 1. Raw Coke Handling Section. 2. Calcination of Raw Petroleum Coke. 3. Calcined Coke handling and storage. Raw Petroleum Coke of different sizes is fed to the crusher through conveyor hopper. The coke is crushed in size less that 35 mm and is discharged below the crusher where from it is manually fed to bucket elevator for discharging in feed hopper provided on the combustion chamber. The coke is fed then to the rotary kiln. The kiln is preheated before starting the feed to 500 to 550 degree centigrade feed end 800 to 900 degree centigrade at discharge end and approx. During preheating process the kiln is kept rotating at the rate 0-3 to 05 RPM. On getting required temperature feeding of Raw Petroleum Coke is started and thus calcinations starts inside kiln and passing through the same it comes in rotary cooler. There these CPC are quenched with water and where from these are shifted by trolleys for storage and onward dispatch.