Metallurgical coal

Metallurgical coal is used in steel production is the focus of our coal trading operations.

It is used to make metallurgical coke which is used as a reducing agent in a blast furnace to temper iron ore into steel products.

Technical Specification for Hard Coking Coal

 

	Technical Parameters	Desired Specification	Tolerance Limits
1.	Total Moisture (on ‘As received’ basis)	8.0% Max	12.0% Max
2.	Sulphur (BS 1016-1973)	0.6% Max	1.0% Max
3.	Crucible Swelling Number (CSN) (ISO/501-1974)	5 Minimum	5 Minimum
4.	Proximate Analysis (On “Air dried basis”) (BS 1016-1973 Part-3)
	Volatile Matter	btw 20% – 32%	btw 20% – 32%
	Ash	8.0% Max	10.0% Min
5.	i. Mean Max Reflectance of Vitrinite (ISO/7404)	1.15 – 1.35	1.15 – 1.40
	ii. Vitrinite Percentafge (ISO/7404)	55% Min.	50% Min.
	iii. Vitrinite Distribution (ISO/7404)	80% Min.	75% Min.
6.	Gieseler Plastometer Test (ASTM-D2639) Maximum Fluidity (ddpm)	300 Min.	300 Min.