In the heart of China’s Henan Province, a groundbreaking study is turning the tables on what we thought we knew about mining waste. Researchers, led by Min Tang of the Henan No.1 Geological Brigade Co., Ltd., have unlocked a treasure trove of tungsten hidden in the tailings of a polymetallic mine, offering a new lease on life for what was once considered waste.
The study, published in ‘Kuangchan zonghe liyong’—translated to English as ‘Comprehensive Utilization of Minerals’—focuses on the flotation of low-grade scheelite, a primary tungsten ore. The team’s exploration experiment revealed that the scheelite content in the tailings was a mere 0.059%, slightly below the boundary grade. But here’s where the magic happens: through a series of innovative processes, including rough selection, pre-enrichment, heating, and drug removal, they managed to concentrate the scheelite to a grade of 30.99% with a recovery rate of 76.94%.
“This study realises the efficient recovery of tungsten in tailings,” Tang explains, highlighting the significance of their findings. The implications for the energy sector are profound. Tungsten, with its high melting point and robust strength, is a critical component in various energy applications, from filaments in incandescent light bulbs to electrodes in the energy sector. By tapping into this previously overlooked resource, the study opens doors to a more sustainable and economically viable future for mining operations.
The commercial impacts are equally compelling. The ability to extract valuable minerals from tailings not only reduces the environmental footprint of mining activities but also enhances the profitability of existing operations. As the world grapples with the challenges of resource depletion and environmental degradation, this research offers a beacon of hope, demonstrating that innovation can turn waste into wealth.
The study’s success in achieving a technical index of beneficiation through a small closed-circuit test sets a precedent for future developments in mineral processing engineering. It challenges the status quo and encourages the industry to look beyond conventional methods. As Tang and his team continue to push the boundaries of what’s possible, their work serves as a reminder that the key to unlocking new resources often lies in re-examining what we’ve left behind.
In an era where sustainability and efficiency are paramount, this research is a game-changer. It’s a testament to the power of innovation and a call to action for the mining industry to embrace new technologies and methodologies. As we stand on the cusp of a new era in mineral processing, the work of Tang and his team shines as a guiding light, illuminating the path to a more sustainable and prosperous future.