Darius Wonyen, a mining and mineral processing engineer at ArcelorMittal Liberia (AML), recently made a significant contribution to the global mining industry by presenting his groundbreaking research at the prestigious Comminution ’25 Conference in Cape Town, South Africa. His participation, a remarkable achievement for both him and Liberia, highlighted the country’s burgeoning role in mining innovation and the power of mentorship and opportunity in nurturing talent. Wonyen’s research focused on optimizing the semi-autogenous grinding process for different ore types found at AML’s Nimba Western Range, specifically addressing the impact of ore hardness variability on mill performance. This research is directly relevant to AML’s ambitious 15 Mtpa concentrator project, aiming to enhance grinding efficiency and reduce energy consumption—a critical aspect of sustainable mining practices.
Wonyen’s journey from university to the international stage underscores the impact of supportive mentorship and access to opportunities. AML’s commitment to fostering talent is evident in the guidance provided by Rachel Tlhole, Metallurgy Manager, and Pinto Pedro, Global Process Engineering Manager, who encouraged and supported Wonyen’s research and conference participation. Their mentorship played a crucial role in his success, emphasizing the importance of investing in human capital for driving innovation within the mining sector.
The Comminution ’25 Conference provided Wonyen with a unique platform to not only share his research but also absorb cutting-edge knowledge and connect with leading experts in the field. He gained valuable insights into advancements such as advanced process control (APC) systems for optimizing grinding circuits, innovative mill liner designs for enhanced durability and cost reduction, efficient mill relining techniques for minimizing downtime, and dynamic simulation tools for pre-commissioning performance testing. These technological advancements hold immense potential for transforming AML’s operations and enhancing the efficiency and sustainability of its future concentrator.
Networking with industry leaders and experts proved invaluable. Wonyen engaged with renowned figures like Barry Wills, author of the seminal “Wills’ Mineral Processing Technology,” and established connections with prominent equipment suppliers, including CITIC HIC, Derrick Corporation, WEIR, and Magotteaux, all of whom are involved in AML’s upcoming project. These interactions fostered collaboration and knowledge exchange, further enriching Wonyen’s experience and strengthening AML’s position within the global mining community.
Beyond individual accomplishments, Wonyen’s participation also served to elevate Liberia’s presence on the international stage. He initiated discussions for ArcelorMittal Liberia to join the Global Comminution Collaborative (GCC), a prestigious group of institutions at the forefront of mineral processing research. This initiative underscores Wonyen’s commitment to advancing Liberia’s role in global mining innovation and fostering collaboration with leading research institutions. His efforts highlight the potential for developing countries to contribute significantly to technological advancements in the mining sector.
Returning to Liberia, Wonyen is enthusiastic about implementing the knowledge gained at the conference. He is focused on refining the concentrator design, integrating advanced simulation technologies, and collaborating with suppliers to implement cost-saving innovations. His dedication exemplifies the practical application of research findings to real-world mining operations. Wonyen’s experience serves as an inspiration to other young engineers in Liberia, demonstrating that world-class work is achievable within the country with the right support and a commitment to pushing boundaries. His vision and expertise will undoubtedly play a pivotal role in shaping the future of sustainable mining in Liberia and beyond. Wonyen’s story highlights the importance of investing in local talent, fostering innovation, and promoting collaboration to advance the mining industry globally.
