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Gas Calcined Anthracite Coal

Gas Calcined Anthracite Coal (GCA Coal)

Gas calcined anthracite coal or GCA coal is produced in gas-fired furnaces under the temperature of 1300⁰C, obtaining a depolarized and partially graphitized product.

GCA has a higher carbon content and relatively higher thermal and electrical conductivity than conventional anthracite coal. Calcining is controlled to achieve a significantly lower Electrical Resistivity (E.R.- 1350 µΩm), ranging from 1250µΩm to 1450µΩm depending on customer needs. Our GCA has low moisture, volatile and sulfur content. It can be used in the manufacture of prebake electrodes, Soderberg and tamping pastes, and carbon blocks and is an excellent smelting additive due to its high purity and consistency.

GCA coal is generally used to blend with ECA coal for cost optimization.

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It is the main raw material for manufacturing carbon electrode paste and is also widely used in the Aluminium & Steel Industry

F.C.: 93 % Min (Typical 93-94% )
Moisture: 0.5 % Max
Ash: 6.0 % Max
V.M.: 1.2 % Max (Typical 1.0%)
Sulfur. : 0.30% Max (Typical 0.25%)
R.D.: 1.8 g/cc.Min
E.R.: 1350 Micro-Ohm-Mtr. Max
Packing: As per customer requirements of 25 Kg PP Bags, 1000 Kg Jumbo Bags, 1200 Kg Jumbo Bags
Granule Size: As per customer Requirements of 1-10 mm, 1-15mm, 1-20 mm