This collection emphasizes the advances of materials processing using various external fields, including electromagnetic fields, electric fields, and gravitational fields, aiming to address challenges in sustainable and efficient processing of different forms of materials. Contributions cover technologies including minerals engineering, metal extraction, materials synthesis and processing, waste treatment, resource and energy recovery, and integration of techno-economic analysis and life cycle assessment.

Zhiwei Peng, Central South University, Changsha, Hunan; Jiann-Yang Hwang, Michigan Technological University, Houghton, MI; Roger Ruan, University of Minnesota, St. Paul, MN 55108, USA; Robin Augustine, Uppsala University, Uppsala 75121; Morsi Mahmoud, Abdullah Al Salem University (AASU), Kuwait, Kuwait; Manoj Gupta National University of Singapore, EA-07-08, Singapore; Joonho Lee, Korea University, Seoul, 02841, South Korea