Ferroalloy dust ash and slag reuse research

• 1、School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing
• 2、Beijing Key Laboratory of Special Melting and Preparation of High-end Metal Materials

Abstract：In order to promote the green transformation and sustainable development of ferroalloy industry, relevant research progresses at home and abroad are systematically reviewed for the resource utilization of dusting ash and smelting slag generated in the process of ferroalloy production. This paper summarizes the efficient treatment technology of ferroalloy dust ash from the aspects of physical treatment, chemical recycling and materialized utilization; analyzes the application potential of ferroalloy slag in the fields of building materials, metallurgical reuse and environmental remediation; and explores the economics, environmental impacts and standardization bottlenecks of the existing technologies. The results show that the technologies of briquetting, wet purification and microcrystalline glass preparation can significantly improve the utilization rate of resources, but the process optimization and large-scale application still need to break through. In the future, it is necessary to strengthen multidisciplinary cross-research, promote policy support and industrial chain synergy, in order to realize the high-value and full-quantitative utilization of ferroalloy solid waste.

Keywords： Ferroalloys dedusting ash smelting slag resource recovery co-processing.