CHARGE FOR OBTAINING HIGH-CARBON FERROCHROME Russian patent published in 2010 - IPC C22C33/04 

FIELD: metallurgy.

SUBSTANCE: charge contains utilisable waste of in-house manufacture, poor lump chromite ore as chrome ore materials with Cr/Fe ratio 1.8-2.2 or its concentrate of 4-100 mm fraction, mixture of coke breeze of 10-25 mm fraction as carbon reducing agent, at the following component content, wt %: coke breeze 6-8, coal 4-5, silicone containing flux 2-4, utilisable waste of in-house manufacture 4-8, poor lump chromite ore its concentrate - the rest.

EFFECT: invention allows obtaining high-carbon ferrochrome as per simplified technique, without costs for preliminary agglomeration of small rich chromite ores, partially using cheaper carbon reducing agent and reducing specific consumption of electrodes.