Optimized roasting of complex copper sulphide concentrates for flexible raw material utilization

Important results from the project

The goal of the project was to develop and establish methods that will aid in improving the capacity of the roasting process in respect to removal of impurity elements arsenic (As) and antimony (Sb). Results from studies conducted within the project has contributed to the overall objective to optimize roasting of sulphidic copper concentrates, thus increasing the capacity to remove impurity elements, As and Sb. Results has further given increased understanding facilitating the potential to continue development and optimization of the roasting process and raw materials.

Expected long term effects

Within the project a test method has been developed, a process model validated with full scale operation, measurement techniques evaluated and a doctoral thesis conducted. Knowledge achieved through all studies conducted within the project facilitates the potential to continue development of the roasting process. The project has also deepened the understanding of the complexity in roasting reactions, the need for more fundamental thermodynamic and kinetic data, and development of measurement technology.

Approach and implementation

The project has been conducted in close collaboration between the project partners and has included fundamental experimental studies, applied trials in lab scale, process modelling, trials and sampling in full scale operation. Participating partners has contributed with complementary expertise, equipment and material which made it possible to implement the project and gain new knowledge and understanding. The project group consisting of experts from industry, researchers and PhD student have had an interactive collaboration with continuous follow up and planning of the work.