Chemical Sciences


Cold Bonded Carbon Composite Pellets for Utilization of Iron Ore Micro-Fines and Carbon Bearing Fines


Chemical Sciences

Focus Area:

Utilisation of Iron Ore

Social Benefits:

This is a cold bonding process, so it is energy efficient. Curing time is very short (5-10 min), It utilizes iron ore micro-fines and coal fines or coke fines or carbon containing waste fines in iron making or sintering, The micro-pellets provide energy to the sinter bed for reduction in coke breeze consumption. 38-48 % reduction in coke breeze has been found when 38 % blast furnace flue dust containing pellets were mixed with iron ore in sintering (12 kg scale), Since it is a composite pellet, it can be reduced faster than normal pellets C02 in steel plant''s waste gas is utilized in strengthening of pellet.

Developing Agency:

CSIR-National Metallurgical Laboratory (NML), Jharkhand

Technology Readiness Index:

Technology Development

Website Link :
Source (more info) :

Brief Description

Description :

This process produces micro-pellets with high C content which will be used in sintering of iron ore for reduction of coke breeze consumption and in smelting reduction process with a short curing time.

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