Outotec® Direct Blister Process

Produce blister copper in a single flash furnace without the need for separate converting stages or ladle transportation. The Outotec Direct Blister Process offers new options for using different raw materials and optimizing plant layout while minimizing investment, operating costs, and the environmental impact even further.

  • Results in high recovery of copper and other valuable metals    
  • Ensures low investment and operating costs for smelter and acid plants    
  • Requires no converting process    
  • Gives high sulfur recovery with only one continuous high-strength SO₂ stream to the acid plant    
  • Improves in-plant hygiene and decreases emissions    
  • Results in long campaign life