Separation of Iron and Rare Earths from Low-Intensity Magnetic Separation (LIMS) Tailings through Magnetization Roasting-Magnetic Separation

Article Engineering, Chemical

A novel process for recovery of scandium, rare earth and niobium from Bayan Obo tailings: NaCl-Ca(OH)2-coal roasting and acid leaching

Bo Zhang et al.

Summary: Roasting and leaching of Bayan Obo tailings can extract valuable elements such as scandium, rare earth, and niobium. Phase transitions of minerals occur during roasting, facilitating scandium leaching. Acid leaching can dissolve newly generated niobium minerals.

MINERALS ENGINEERING (2022)

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Article Green & Sustainable Science & Technology

A novel and clean utilization of converter sludge by co-reduction roasting with high-phosphorus iron ore to produce powdery reduced iron

Shichao Wu et al.

Summary: This paper designed a co-reduction roasting followed by magnetic separation process to achieve the full recycling and clean utilization of converter sludge (CS) and upgrade high-phosphorus iron ore (HPIO), realizing the comprehensive and green utilization of CS.

JOURNAL OF CLEANER PRODUCTION (2022)

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Review Engineering, Environmental

Comprehensive review on metallurgical recycling and cleaning of copper slag

Hongyu Tian et al.

Summary: Copper slag, a potentially harmful waste generated during copper smelting, contains valuable metals like Cu, Fe, Zn, Co, and Ni as well as hazardous elements such as Pb and As. It is important to subject copper slag to further metallurgical recycling and cleaning for economic and environmental benefits. Improved processes focusing on high recycling efficiency, low energy consumption, and low secondary environmental pollution are needed for sustainable waste utilization of copper slag.

RESOURCES CONSERVATION AND RECYCLING (2021)

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Article Engineering, Environmental

Pilot-scale extraction of iron from flotation tailings via suspension magnetization roasting in a mixture of CO and H2 followed by magnetic separation

Zhidong Tang et al.

Summary: The study demonstrates that the efficient extraction of iron from flotation tailings through suspension magnetization roasting and magnetic separation is a promising way to reduce emissions and efficiently treat mining tailings.

RESOURCES CONSERVATION AND RECYCLING (2021)

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Article Engineering, Environmental