Chromium is a strategically important raw material for Outokumpu, since it is what makes steel "stainless". Expanding the underground operations in the Kemi mine to the depth of 1,000 metres ensures continued chrome supply for the future. The investment enables Outokumpu to maintain the current level of chromite production capacity of about 2.7 Mt per year also in the coming decades.
Pöyry's assignment includes all basic and detailed engineering services for process, mechanical, layout, civil, structural, process electrification, ICT, automation, instrumentation, HVAC, ventilation and building electrification design disciplines as well as rock mechanics and rock engineering. Procurement support, project management and control services, site supervision and commissioning support are also included in the scope. The project is carried out between 2017 and 2021.
Operational safety, cost-effectiveness and environmentally sound operations are characteristics of the Kemi mine. Good safety performance, together with clean and properly organised working environments, both underground and on the surface, make an excellent setting for effective production, modern technological applications and the use of advanced working methods. The environmental impact of the operations in Kemi are minimised thanks to the insolubility of oxidic chromite ore, the chemical-free concentration method based on gravity, and the sealed process water circulation covering the entire mine and concentration process.