Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material

Agglomerate produced by a sintering process for use as a blast furnace feedstock, comprising

• metal- and/or metal oxide containing fines, that comprise a proportion of intermediate grain sizes between about 0.2 mm to 0.7 mm of more than 30% wt., and
• a mineral binder comprising a mineral raw material and a lime-based material, wherein the mineral raw material
• contains a clay mineral, and
• comprises a silicon oxide proportion of at least 40 wt. %, and
• a finest grain proportion of less than 4 μm of at least 20 wt. %, and
• a grain size proportion of less than 1 μm of at least 10 wt. %;
• wherein the mineral raw material comprises 70 to 90 wt. % silicon oxide, 5 to 20 wt. % aluminium oxide, 0.2 to 1.5 wt. % Fe2O3 and 0.1 to 1 wt. % potassium oxide.

Agglomerate produced by a sintering process for use as a blast furnace feedstock, comprising

• metal- and/or metal oxide containing fines that comprise a proportion of intermediate grain sizes between about 0.2 mm to 0.7 mm of more than 30% wt., and
• a mineral binder comprising a mineral raw material and a lime-based material, wherein the mineral raw material
• contains a clay mineral, and
• comprises a silicon oxide proportion of at least 40 wt. %, and
• a finest grain proportion of less than 4 μm of at least 20 wt. %, and
• a grain size proportion of less than 1 μm of at least 10 wt. %
• wherein before the sintering process the agglomerate has a mass humidity that is set at a value of 2 to 20 wt. %.

Agglomerate, produced by a sintering process for use as a blast furnace feedstock, comprising

• metal- and/or metal oxide containing fines, that comprise a proportion of intermediate grain sizes between about 0.2 mm to 0.7 mm of more than 30% wt., and
• a mineral binder comprising a mineral raw material and a lime-based material, wherein the mineral raw material
• contains a clay mineral, and
• comprises a silicon oxide proportion of at least 40 wt. %, and
• a finest grain proportion of less than 4 μm of at least 20 wt. %, and
• a grain size proportion of less than 1 μm of at least 10 wt. %,
• wherein the mineral raw material comprises approximately 83 wt. % silicon oxide, approximately 13 wt. % aluminium oxide, approximately 0.7 wt. % Fe2O3 and approximately 0.4 wt. % potassium oxide.