An investigation of wide-angle dense-medium cycloning for the recovery of metal and aggregate from fine slag

Eric R. Wolfe, Mark S. Klima

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

An investigation was carried out to evaluate the feasibility of using wide-angle dense-medium cycloning to process a fine (-600 μm) stainless-steel slag. The slag was characterized by size and density using a combination of sieving and pycnometer measurements. Separation testing was carried out using a laboratory dense-medium cyclone to concentrate the stainless-steel fraction and produce a low-metal aggregate material. The effects of cyclone geometry (cone angle, underflow diameter, overflow diameter, cylinder length, and vortex finder length) and medium density on cyclone performance were evaluated. A Plackett-Burman statistical design was used to determine the significant variables as related to recovery and purity of the metal and aggregate products. Based on these results, full-factorial designs were performed at two different medium densities. Regression models relating the significant variables to product recovery and purity were developed for both the metal and aggregate fractions.

Original languageEnglish (US)
Pages (from-to)2199-2220
Number of pages22
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume41
Issue number10
DOIs
StatePublished - Oct 1 2006

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slag
cyclone
Slags
Metals
Stainless Steel
Recovery
metal
Stainless steel
steel
sieving
vortex
Cones
Vortex flow
geometry
Geometry
Testing
product

All Science Journal Classification (ASJC) codes

  • Environmental Engineering

Cite this

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