NatSteel Holdings takes
a multi-pronged approach to caring for our environment. We encourage
our staff to take responsibility for the environment, and optimise
the production life cycle to reduce waste, conserve energy and prevent
Over the past two decades, more than
$20 million has been invested in pollution-control equipment and
barriers to protect the environment.
Radioactive Scrap Monitoring System
We were the regional pioneers in radiation detection for our steel
scrap operations back in 1994. Our steel products are certified
as compliant with the safety standards of the International Atomic
Reutilisation of Steel Slag
By effectively converting steel slag (a major by-product from the
melting of steel scrap) into slag premix for road construction,
achieved waste minimisation, cost reduction, the conservation of
natural resources and landfill space, and more durable roads.
Finger Shaft Furnace
By investing in the finger shaft furnace to replace the conventional
electric arc furnace, we reduced energy usage by 25 percent.
Steel scrap is melted in batches at the furnace. The energy available
in the exhaust gases (also known as flue) from the melting process
can be recovered by passing the hot flue through the next batch
of steel scrap, thus preheating it. The finger shaft forms the preheating
chamber for the passage of the hot flue.
In the late 1990s, our engineers modified the production
process at the rolling mill by linking the operation of the Meltshop
directly to the
reheating furnace at the rolling mill via an automated conveyor
To roll billets into rebars or rods, the billets need to be at a
temperature of around 1,100 degrees Celsius. Instead of reheating
room temperature, the automated conveyor system enabled the billets
to arrive at the reheating furnace at temperatures of 700 to 750
degrees Celsius, thus saving reheating costs.
As a result, fuel consumption was reduced by more than 40 percent.
There were manpower and time savings too with the automated conveyor
system as the billets need not be trucked from the Meltshop to the
We built a drainage system to collect and recycle water used for
cooling down billets as they pass through the rolling mill.