1 All the raw material is charged into the blast furnace, from top, through variable throat armour or any other means. 2  The purpose of a blast furnace is to chemically reduce and physically convert iron oxides into liquid iron called hot metal.
in ton. 1  unit of weight in the avoirdupois system equal to 2,000 pounds (907.18 kg) in the United States (the short ton) and 2,240 pounds (1,016.05 kg) in Britain (the long ton). The metric ton used in most other countries is 1,000 kg, equivalent to 2,204.6 pounds avoirdupois.
Best Answer: In the US a ton can either be 2000lb (short ton) or 2240lb (long ton). An SI (metric tonne) is always 1000kg in every country. 1kg is 2.2046 US lb so a ...