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
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CHEMICAL COMPOSITION |
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Total Iron(T Fe) |
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Metallic Iron（M Fe） |
80±1 |
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Metallization |
91±1 |
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C |
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AL2O3 |
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Sio2 |
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Phosphorous(P) |
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Sulphur(S) |
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MgO |
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CaO |
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Physical Analysis |
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Size（mm) |
145x55x35 |
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Weight of each piece(g) |
850 |
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Bulk Density |
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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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