Gas Malaysia Sdn Bhd - Total Energy Solutions for the 21st Century

STEEL INDUSTRY

In steel industry, pig iron and scrap iron are transformed into finish products by undergoing various heating processes.

Natural gas is mainly used in secondary melting, casting of molten steel, cutting, refining of billet and slabs.

The major steel products include pipes, wires and coated sheets.

Steel Production Process

Melting

Steel melting is achieved by means of striking an electric arc between graphite electrodes and the charge. Natural gas / Oxygen burners are used for supplementary firing in this process. It produces a high flame temperature to preheat the raw material and maintain molten steel temperature, thus reducing energy costs in the melting process.

Holding

High levels of luminance and flame temperature produced by the combustion of natural gas is used to provide enhanced heat transfer (increased efficiency) to maintain the molten steel temperature.

Casting

The easy controllability of natural gas firing provides a constant heating environment to hold the molten steel at the required temperature for the casting process.

Cutting

A natural gas / oxygen cutter is used to ensure a clean cutting surface for the steel billets.

Reheating

By using twin-bed regenerative natural gas combustion burners, a substantial amount of energy can be recovered, thus increasing the thermal efficiency of the furnace.

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