Hoogovens Staal B.v.

Willem Van Der Knoop

Christiaan M Beelen

The processing of aluminium dross containing Al and Al.sub.2 O.sub.3 originating from aluminium production, comprises the steps of separating aluminium from the dross to produce a dross residue and reacting the dross residue at a temperature above 1360.degree. C. with a calcium-oxygen compound to form calcium aluminate as an at least partially melted material. To obtain a product specially suitable for use in steel-making, the calcium aluminate is rapidly cooled to form a glassy solid product. The two steps may be performed in the same vessel, which has a suitable refractory lining.

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Alkmaar, Netherlands

Willem Van Der Knoop