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Coal is used to make Coke for Iron and Steel industry. Coke is made by baking a blend of selected Bituminious coals (called Coking coal or Metallurgical Coal) in special high temperature ovens without contact with air until almost all of the volatile matter is driven off. The resulting product, COKE, consist principally of Carbon. A short ton of coal yeilds about 1,400 pounds of coke and a variety of by-products such as crude coal tar, light oils, and ammonia, which are refined to obtain various chemical products. About 1,000 pounds of coke are consumed for every short ton of pig iron produced.

Traditionally, chemistry, size & strength have been considered the most important properties for use in the blast furnace. The quality of the constituent coals determine the charecteristicts of the resultant coke.

Coke is used chiefly to smelt iron ore and other bearing materials in blast furnaces, acting both as a source of heat and as a chemical reducing agent to produce pig iron or hot metal. Coke, iron-ore and limestone are fed into blast furnace, which runs continously. Hot air blown into the furnace burns the coke, which serves as source of heat and as an oxygen reducing agent to produce metallic iron. Limestone acts as a flux and also combines with impurities to form slag. Coke also serves as a structural material to support the deep bed of coke/iron oxide/limestone that makes up much of the furnace volume. It is in this last role that its properties are crucial. It is important that it does not degrade (e.g break up into small particles) during its drescent through the oxidising hot gases passing through the stock region of the furnace.

To produce high quality blast furnace coal, high quality coal must be used. High quality coal are those coals that when coked together produce the highest stability and CSR (Coke strength after reactivity) to support the blast furnace burden and allow maximum & even maximum production.

Coke is produced and sized according to the reqirement of each INDIVIDUAL consumer.

 
     
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