KCC Roaster Off-Gas Study

Client: Kamoto Copper Company
Location: Democratic Republic of Congo

Study of roaster off-gas treatment options to support increased sulfide concentrate throughput. GCT evaluated oxygen enrichment strategies and compared SO₂ reduction technologies, including dual-alkali scrubbing, Shell CANSOLV, Halldor Topsoe WSA, and routing gases to the existing MECS acid plant.

Key Objectives Included:

• Assess feasibility of multiple SO₂ reduction technologies
• Evaluate cost implications (CAPEX, OPEX, payback) for 2�4 roaster scenarios
• Recommend optimal off-gas treatment solution
• Reduce reagent consumption and improve sulfur recovery
• Support long-term operational efficiency and emissions compliance