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Use of Hot Briquetted Iron (HBI) in the Electric Arc Furnace (EAF) for Steelmaking



Source: internal company

Steel production in the EAF continues to grow in worldwide. The past several years have seen increases in the supply and use of Pig Iron, Direct Reduced Iron(DRI), and Hot Briquetted Iron (HBI) in the EAF.

HBI should not be considered as a scrap substitute but rather as a source of clean iron units that can be used to supplement and enhance the scrap charge.

HBI is a high Fe, low residual metallic material for producing high quality iron and steel products in a wide variety of furnaces.


The value-in-use of HBI is different for each melt shop and will depend on local scrap supply, production facilities, metallurgical practice and steel product mix.


Benefits of Using HBI in the EAF


Very low residual element content enables production of high quality steel products or use of higher percentage of lower cost scrap in the charge mix.

Known and consistent chemistry, certified by analysis, assists melt consistency.

Consistent shape and form enable efficient material handling and storage.

High density can reduce the number of bucket charges, allows for increased use of lower cost, less dense feedstock and reduces storage space requirements.

Can be continuously charged to the furnace.

Acts as N scavenger = low N content in steel.


General Specifications for HBI (Ranges % by Weight)
(based on 65.5 — 68.0% Fe Iron Ore)
Metallization 94.00%
Fe (Total) 88.3 - 94.0%
Fe (Metallic) 83.0 - 88.4%
C 0.5 - 1.6
S 0.001 - 0.03%
P2O5 0.005 - 0.09%
Gangue* 3.9 - 8.6%
Mn, Cu, Ni, Cr, Mo, Sn, Pb, Zn Traces
Size (typical) (90 - 140) x (48 - 58) x (32 - 34) mm
Fines & chips ≤ 5.0%
Apparent Density > 5.0 t/m3
Bulk Density 2.5 - 3.3 t/m3
* residual unreduced oxides, mainly SiO2 and Al2O3, but also CaO, MgO, MnO, etc.

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