The Bottom Smelting and Converting technology is applied for copper/lead, zinc leaching residue smelting. With decades of project experience, we nowadays can offer you a service package from process engineering to high performance equipment.

For copper metallurgy, bottom bowing furnace can treat copper oxide, copper sulfide ore, copper/nickel concentrates, copper scrap, brass and electronic waste material. The bottom blowing furnace has the advantages of less energy consumption, high utilization rate of oxygen and producing less off-gas amount with high SO₂ concentration. 

Characteristics

1.    Wide adaptability to a variety of primary/secondary / WEEE waste material; capable of treating complex feed metal grade higher than 10%;

2.    Feed moisture up to 8% can be directly smelt in the furnace, reducing investment and operation cost for concentrate drying; 

3.    Long campaign life, steel furnace shell lined with insulated layer and refractory brick ensures better operation safety and lower energy consumption; 

4.    Continuous smelting and converting/reduction process, high automated operation, stable SO₂ content (12-18%) in off-gas in favor of acid-making;

5.    Oxygen content ≥70% used for smelting to achieve large productivity;

6.    Flexible and automatic switch between autothermal or semi-autothermal mode to match with feed material enthalpy value

7.    Consumption reduced to 140kgce per ton blister copper;

8.    Fully-insulated process without ladle transfer, minimized fugitive emission and environment pollution.