Preparation method for stainless steel slags and steelmaking slags for recovering metal

The invention relates to a preparation method for stainless steel slags and modified steelmaking slags for recovering metal. In order to create a dry-operating preparation method that ensures low-wear and energy-efficient comminution and deagglomeration of stainless steel slags and modified steelmak...

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Bibliographische Detailangaben
Hauptverfasser:	GEROLD, CARSTEN, LANGEL, JORG, WULFERT, HOLGER, DARDEMANN, FRANK
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL FERROUS OR NON-FERROUS ALLOYS LIME, MAGNESIA MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON MILLING GRAIN PERFORMING OPERATIONS PREPARATORY TREATMENT OF GRAIN FOR MILLING PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS REFRACTORIES SLAG TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The invention relates to a preparation method for stainless steel slags and modified steelmaking slags for recovering metal. In order to create a dry-operating preparation method that ensures low-wear and energy-efficient comminution and deagglomeration of stainless steel slags and modified steelmaking slags and highly precise separation of a metal fraction and a silicate fraction and that can be variably designed regarding the different slag compositions and different requirements for the quality of the metal fraction and the at least one silicate fraction, a roller mill is used at least for the comminution. The slags are fed at a feed grain size up to approximately 150 mm. The use of an air-swept roller mill in which the comminution and deagglomeration, if necessary drying, and at the same time separation into a substantially mineral-free metal fraction and a nearly metal-free silicate fraction are combined, is advantageous. If an overflow roller mill is used, the metal fraction and the silicate fraction are separated in an external separating device.