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Of Calcined Petroleum Coke
Chapter II Application of CPC & its Market in Industry
Chapter I General Description of Calcined Petroleum Coke (CPC)
Chapter III Product Specification CPC PT. MJIS
General Description Of Calcined Petroleum Coke
a. Raw Material
Calcined Petroleum Coke produced from raw materials Green Coke. Green
coke or also known as green petroleum coke, a material derived from residue
oil refining process.
Green Coke, produced in oil refineries. Processing of solid carbon compounds
using Delayed Cooking Unit is capable of converting heavy oil (short residue)
into green coke.
Green Coke has a heavier fraction when compared to gasoline. Due to the
lower calorific value of between 7500-8500 K.cal/ Kg, but when compared with
coal (K.cal/ 5000 to 6000 Kg), the calorific value higher green coke.
Judging from grade, petcoke classified into two types, namely fuel grade coke
and anode grade coke.
Fuel-grade coke is used as fuel, while
The anode grade coke used in the aluminum smelting industry, steel and
The main difference of fuel grade coke with anode grade coke is a metal
element content and sulfur levels. At the anode grade coke, metals and sulfur
content should be very low.
Green Petroleum Coke
There are several types of pet coke is needle coke, honeycomb coke, sponge
coke and shot coke. Needle coke and coke honeycomb classified in anode grade
coke, while the sponge coke and shot coke classified as fuel grade coke.
Calcination of the green will produce calcined petcoke petcoke, this calcination
process removes moisture content and volatile matter content and changing
the crystal structure of pet coke.
In general, the processing of calcined coke product can be classified into tree
factors such as the following picture:
b. Petroleum Coke Calcining
Petroleum Coke Calcining is a process whereby green or raw petroleum coke is
thermally upgraded to :
Remove associated moisture and volatile combustion matter
Improve critical physical properties like
Green Coke Calcinacing Process
Application of CPC & it’s Market in Industry
Market of CFC Calcined Petroleum Coke (CPC) is important industrial commodity linking the oil
refining, metallurgical/chemical with solid material industries and an aluminium
and titanium dioxide production.
The application for Calcined Petroleum Coke (CPC) is used in this following
The Aluminium industry
More than 70 percent of all CPC used to produce anodes for the smelting of
alumina into aluminum.
Titanium Dioxide Industry
Calcined petcoke is used in the production of titanium dioxide (TiO2), a
naturally occurring mineral that is used as a pigment for plastics, paints,
sunscreen and food coloring. Two significant usefulness of titanium dioxide is
as a replacement for lead in paint and as a bleach paper.
The Steel Industry
Calcined petcoke as recarburizer in the steel industry recarburizer used to
adjust the carbon content.
Application of CPC in Aluminium industry
The use of CPC in Aluminium industry is to produce anode for reduction process in
Aluminium process. Liquid Aluminium is produced by electrolytic reduction of
alumina (AL2O3) dissolved in an electrolyte (bath) mainly containing Cryolite
(Na3AlF6). The chemical reaction can be written as :
where Carbon ( C ) use anode Carbon made from CPC as reductor
Aluminium Production use Anode (Carbon) from CPC
The anodes used are termed as prebaked anodes which are made from a mixture
of Calcined Petroleum Coke, aggregate and coal tar pitch binder moulded into
blocks and bake in separate anode baking furnace at about 1120 C. An Aluminium
rod with iron studs is then cast or rammed into grooves in the top of the anode
block in order to support the anode and the conduct the electric current to the
anode when it has been positioned in the cell.
Application of CPC in Titanium Dioxide (TiO2) industry
In opposition of the popular belief, the most widely used titanium product is not
the titanium metal and alloys, but rather is the titanium dioxide (TiO2) pigment
that provide whiteness and opacity to a vast range of everyday products from
coatings and plastics, to inks and even as flux in glass manufacture, filler in paper,
rubber industries, cosmetics and food. Annually more than 4.5 million t of TiO2 are
produced worldwide and only about 4%~5% is used to produced metallic titanium.
Titanium Dioxide (TiO2) pigment are produce from variety of ares by two different
The Sulfate Process (about 40% use in industry)
The Chloride Process (about 60% use in industry)
At the chloride process, TiO2 produces by using Carbon as reductor, shown in this
TiO2 is simple inorganic compound produced as a pure white powder (known as
titanium white). This pigmen can be use, in most of its application, as a pigment to
scatter light, provide whiteness & opacity product in coating, plastic and paint,
printing inks and paper, pharmaceutical and cosmetic industries, textile and food
Application of CPC in Steel Industry
The Calcined Petroleum Coke is widely use in Steel industry. It is use as recarburizer
in the steel industry. Recarburizer used to adjust the carbon content in the steel
Steel Industry Tree
Parameter Specification offered
C fix Min 97% min
Ash content 1% - 1,5%
Volatile Matter Content 1,5% - 2,0%
Sulfur Content Max 0,5%
Moisture Content Max 0,5%
Product Specification CPC PT. MJIS
Typical Specification CPC
Product Pictures :
Product CPC in Bag CPC Product
Jumbo Bag with ± 550 kg
Size Distribution :
< 1 mm : 28.71%
1-5 mm: 54.57%
>5 mm: 16.71%