The tilting rectangular furnace is a core piece of equipment in copper pyro-refining. Featuring a rectangular furnace chamber, it tilts via a hydraulic drive system to adjust its position according to specific process requirements; the equipment comes in a wide range of capacities, typically spanning from 5 to 30 tons.

The refining process within this furnace is a classic pyrometallurgical operation, generally comprising the following stages:

Charging and Melting: Pre-treated scrap copper (baled into blocks) is fed into the furnace through the charging door. Simultaneously, fluxes such as silica and pig iron are added based on the raw material composition to prepare for subsequent slag formation.

Oxidation and Slagging: The furnace body is tilted to a specific angle, submerging fixed oxidation tuyères into the molten copper. Oxygen or air is injected to oxidize impurities—such as zinc, lead, and tin—within the melt; these oxides combine with the fluxes to form slag, enabling their separation from the copper.

Reduction and Casting: Following oxidation, a reduction process is performed to remove oxygen from the molten copper. Subsequently, the furnace tilts slowly to pour the purified molten copper through the taphole, casting it into anode plates for use in downstream electrolytic refining.

The tilting rectangular furnace is a key piece of equipment in the recycled copper (scrap copper recovery) industry. If you would like to know the technical specifications for specific models (such as different capacities) or details regarding operational procedures in actual production, please feel free to leave a message and inquire.