Metallurgical coke inspection

Coke is a product made of coking coal, a type of coal that contains less sulfur and less ash due to the process of coking coal into coke in anaerobic conditions above 1000 ° С. Volatile components such as water, coal gas and coal ash have been removed almost completely. Carbon and residual ash are dissolved together, part of the carbon is converted to graphite-like form.

Coke is used for smelting cast iron (blast furnace coke) as well as making high-quality smokeless fuel, reducing agent in metallurgical technologies from iron ore, emulsifying agents in materials. Coke is also used as a fuel in the manufacture of cast iron or other common uses, in the chemical and metallurgical industries of iron (special types of coke).

The chemical and physical specification of commercial coke are usually as follows:

  • Partical size: 30mm-90mm, 30mm-50mm, 25mm-80mm, 25mm-90mm, 30mm-85mm,…
  • Ash content (Dry basis):                 < 12.5% hoặc 13.5%
  • Volatile matter (Dry basis):             < 1.2% hoặc 1.5%
  • Fixed Carbon content:                    > 86% hoặc 85%
  • Sulphur content (Dry basis):           < 0.65%
  • Phosphorous content (Dry basis):  < 0.04%
  • M10                                                < 7% or 9%
  • M40                                                > 82% or 84%
  • CRI                                                 < 30%
  • CSR                                                > 60%
Metallurgical coke partical size  30mm – 50mm
Metallurgical coke partical size 25mm – 80mm
Metallurgical coke inspection

Metallurgical coke inspection scopes of IMI Vietnam are as follows:

1. Pre-shipment inspection at warehouse/open yard (PSI inspection)

2. Loading/Discharging inspection

  • Quantity inspection by Draft survey (Vessel and/or Barge)
  • Quantity inspection by truck scale
  • Cargo hold cleanliness inspection
  • Loading/discharging supervision
  • Sampling and sample preparation
  • Analysis chemical and physical, sizing analysis
  • Other scope of inspection required

3. Inspection at the receiving Factory

  • Quantity inspection by truck weighbridge scale (Monitoring the process of weighing all trucks at the Factory)
  • Sampling of all trucks at the Factory
  • Prepare the analysis sample
  • Sizing, moisture content determination
  • Analysis of physical and chemical parameters
  • Daily report (Weighing result, Sizing result, Moisture content result)
  • Other scope of inspection required

For further advice on coke inspection service of IMI Vietnam, please contact:

IMI Vietnam Co., Ltd

Address: 2/101 Phuong Khe Street, Dong Hoa Ward, Kien An District, Haiphong City, Vietnam


Hotline: +84 372 190781


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