FIELD: metallurgy.
SUBSTANCE: procedure consists in charging pressed blocks of scrap into crucible of furnace, in heating charged raw material to temperature exceeding temperature of melt by 100°C, and in casting copper melt into moulds. Also, height of copper melt in the crucible of the furnace is maintained at 1000 mm. At copper melt casting first the upper layer of copper melt corresponding to 5-10 % of weight of total melt in the crucible of the furnace is cast into a ladle or chute wherefrom melt is cast into moulds to receive weight of 500 kg. Further, 80-90 % of copper melt is cast from the middle part of the crucible of the furnace into the moulds for production of ingots of 19-25 kg weight. Finally, copper melt left on the bottom of the furnace crucible and corresponding to 5-10 % of while weight of melt is cast into the ladle or chute. The furnace consists of a case, of lining out of a refractory brick, of the crucible for re-melting raw material charged into the furnace, of a removable cover of the crucible, and of three notches positioned at crucible height. Also, the lower notch is positioned at the level of the bottom of the furnace crucible, the middle notch is at height of 80 mm from the bottom of the furnace and the upper notch is at height of 900 mm from the bottom of the furnace. The furnace is equipped with gas dead-end burners arranged in chambers separated from crucible space with brickwork out of refractory brick. Channels are made along whole height of brickwork.
EFFECT: production of high quality copper, brass and bronze with low capital expenditures and low prime cost of products.
3 cl, 2 dwg, 1 tbl
