METALLURGICAL COKE

Since the 1960’s part of the coke used has been replaced by auxiliary reductants injected through the tuyeres such as oil, tar, coal and natural gas.

The most important influences of coke on the process are:

• Coke is the source of the CO gas used to reduce the iron oxides to metallic iron.
• Coke is consumed and generates the heat used to melt the burden.
• The charging of alternating layers of ore and cokes creates a coke structure through which the reduction gas is distributed and penetrates into the ore layers. When the ore is molten the burden consists solely of coke, the burden of the blast furnace is supported by this structure which is also required to be permeable to allow iron and slag to accumulate in the hearth.
• Coke provides the carbon for carburization of the hot metal.

STEAM COAL

Coal is a family name for a variety of solid organic fuels and refers to a range of combustible sedimentary rock materials spanning a continuous quality range.

Minmets Ltd offers wide variety of steam coal for the use of power plants in China with Min Gross Calorific value of 3500 kcal/kg NAR and above from Indonesia, Colombia, South Africa and Australia.