Gravity Concentration in Urban Mining Applications—A Review

Author:

Ambrós Weslei M.1ORCID

Affiliation:

1. Mineral Processing Laboratory, Federal University of Rio Grande do Sul, 9500 Bento Gonçalves Avenue, Porto Alegre 91501-970, Brazil

Abstract

Urban mining has emerged as a concept that goes beyond conventional recycling, as it aims to tackle both the challenges of solid waste generation and management, as well as the scarcity of primary resources. Gravity concentration has gained increasing attention as a promising method for addressing crucial challenges in urban mining applications. In this sense, this review provides a comprehensive and up-to-date overview of gravity concentration in urban mining processes, covering principles, techniques, current applications, recent advancements, challenges, and opportunities. Emphasis was placed on shifting from the commonly found literature focus on ore processing to solid waste processing. Three types of solid waste, namely plastics, construction and demolition waste (CDW), and waste from electrical and electronic equipment (WEEE), were chosen for a more in-depth examination due to their massive production and widespread generation. Discussions also considered the potential of gravity concentration to address the unique challenges in their processing and explored possibilities for future developments.

Funder

National Council for Scientific and Technological Development—CNPq

Coordination for the Improvement of Higher Education Personnel—CAPES-PROEX

Publisher

MDPI AG

Subject

Management, Monitoring, Policy and Law,Waste Management and Disposal,General Materials Science

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