METHOD OF RECYCLING OF FURNACE WASTE NICKEL SLAGS TO FERRONICKEL AND CAST IRON Russian patent published in 2015 - IPC C22B7/04 C22C33/04 C22C33/08 

FIELD: metallurgy.

SUBSTANCE: pre-dried furnace waste nickel slug is mixed with carbon-containing deoxidant in quantity 3-10% of slug weight, the obtained mixture is melted in flame furnace. And after melting of the said mixture the ferronickel containing over 5% of nickel is released from the furnace in the ladder, after release completion for the desulphuration the ferrum-magnesium alloy is added in quality necessary to ensure the permitted sulphur content in the ferronickel, then to the slug left in the furnace the carbon-containing deoxidant is added in quantity 10-20% of slug weight, and its further melting is performed with cast iron of grades "Л1-Л6" production.

EFFECT: invention permits complex and without wastes recycling of the waste nickel slugs with manufacturing of three commercial products, that is, ferronickel, cast iron and Waelz slag.

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