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Hot Briquetted Iron (HBI Iron)

Definition of HBI

Hot Briquetted Iron (HBI) is a premium form of Direct Reduced Iron (DRI).As a supplement for pig iron and scrap in electric furnace steel mills. It is a compacted form of direct reduced iron (DRI), which facilitates its handling, storage, and use.Direct Reduced Iron (DRI) has been compacted at a temperature greater than 650° C at time of compaction and has a density greater than 5,000 kilograms per cubic metre (5,000 kg/m3).

Typical Specifications of HBI

CHEMICAL COMPOSITION

Total Iron(T Fe)

Metallic Iron(M Fe)

80±1

Metallization

91±1

C

AL2O3

Sio2

Phosphorous(P)

Sulphur(S)

MgO

CaO

Physical Analysis

Size(mm)

145x55x35

Weight of each piece(g)

850

Bulk Density

Apparent Density

5

The advantage of Hot Briquetted Iron (HBI)

HBI is a much safer form of DRI than DRI pellets. It is far more resistant to overheating if it becomes wet. HBI was developed as a product in order to overcome the problems associated with shipping and handling of DRI - due to the process of compaction it is very much less porous and therefore very much less reactive than DRI and does not suffer from the risk of self-heating associated with DRI.

The principal market for HBI is electric arc furnace (EAF) steel-making, but HBI also finds application as a trim coolant in basic oxygen furnace (BOF) steel-making and as blast furnace feedstock.

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