Flotation of Fine Gold Particles by the Assistance of Coal-Oil Agglomerates


ŞEN S., Ipekoglu U., Cilingir Y.

SEPARATION SCIENCE AND TECHNOLOGY, vol.45, no.5, pp.610-618, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 45 Issue: 5
  • Publication Date: 2010
  • Doi Number: 10.1080/01496390903566655
  • Journal Name: SEPARATION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.610-618
  • Keywords: agglomeration, coal, flotation, gold, oil, HYDROPHOBIC FLOCCULATION, CARRIER FLOTATION, SEPARATION, COLLISION, ADHESION, SIZE
  • Dokuz Eylül University Affiliated: Yes

Abstract

This paper describes the use of coal-oil agglomerates in flotation to increase the gold recovery from an ore containing fine gold particles. The effects of operating parameters on gold flotation recovery such as oil type, particle size of agglomerating material, agglomerate/ore and oil/ore ratios were investigated. The studies showed that petroleum oils are more effective than vegetable oils in oil agglomeration of Kozlu coal and coal-oil assisted gold flotation. Gold recovery can be increased using a higher amount of agglomerates in the process; however, gold grade of the flotation concentrates is reduced significantly. The use of bridging oil at high concentrations in the agglomeration process provides high-grade gold concentrates, but lower recoveries. The utilization of coarser coal particles in the coal-oil agglomeration stage leads to higher selectivity and recovery values for gold particles.