Product sampled: Coking Coal, in bulk

Quantity: 50,000 MT

Size (Visual estimation): Less than 1 mm – About 60%, More than 1mm – About 40%

Lot Area: 60m*50m*7m

Sulphur Content (%): 1.27
Ash Content: 10.27

Coaking Coal

Sample Identification:

Sample Identifier: COT#007457

Date Analyzed: 03/08/12

Ash: 10.27

Sulphur: 1.27


Petrographic Indices:

Mean Maximum Reflectance (RoMax): 1.02

Standard Deviation: 0.16

Composition Balance Index: 1.13

Calculated Strength Index: 3.88

Calculated Stability Index: 52.00

Estimated Coke Strength DI 30/15: 93.55

Predicted Free Swelling Index: 7.50


Reactive Components:

Vitrinite: 56.20

Liptinite: 3.00

Reactive Semifusinite: 11.50

Total Reactives: 70.70


Inert Components:

Oxidized Coal: 0.40

Inert Semifusinite: 11.60

Fusinite: 7.50

Inertodetrinite: 3.70

Macrinitre: 0.30

Mineral Matter: 5.80

Total Inerts: 29.30

Vitrinite reflectance by: ISO 7404/5 – COT #007457


Basic Statistics:

Romax: 1.02

Standard Error of the mean: 0.01

Coefficient of Variation: 15.4904

Variance: 0.0248

Standard Deviation: 0.1576

Skewness: 1.3409

Kurtosis: 4.5949

Coking coal

Coking coal is essential to the manufacture of blast-furnace coke and foundry coke, which is used in steel production. Coal is characterised by its low volatile matter content and high swelling index. Based on its properties, Coal can be divided into two groups:
semi-soft Coal (or SSCC)
hard Coal (or HCC)
Hard Coal has better coking properties than semi-soft Coal. Australian hard Coal is regarded as the benchmark for quality.
Given that the ultimate consumer of PCI coking coal is the steel making industry, we started to classify its sales as coking coal as of 1 January 2012, in line with industry practice. PCI coking coal is a type of coal used in steel production that can partially replace coke in the process of solid iron ore melting in blast furnaces. The blast furnace design needs to be adjusted in order to accommodate PCI technology.

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