ISSN 2594-357X
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Abstract
Cavitation is a process of formation, growth and subsequent collapse of gas and/or vapor-filled cavities, or microbubbles, in a fluid. Several fundamental studies about this phenomenon have shown that microbubbles generated on mineral surfaces facilitate bubble-particle attachment, and ultimately improves flotation performance. This work presents the Feed Air Jet, a feed pre-aeration cavitation sparger system developed by Eriez. Using coal, cavitation was applied to a flotation feed stock studied in laboratory setting in the USA. This feed pretreatment technique resulted in a significant increase in recovery and flotation kinetics. The Feed Air Jet was also installed at an industrial plant in Brazil and enhanced the overall metallurgy by increasing the mass recovery of the iron (Fe) values while reducing the amount of entrained iron in the tailings stream.
Cavitation is a process of formation, growth and subsequent collapse of gas and/or vapor-filled cavities, or microbubbles, in a fluid. Several fundamental studies about this phenomenon have shown that microbubbles generated on mineral surfaces facilitate bubble-particle attachment, and ultimately improves flotation performance. This work presents the Feed Air Jet, a feed pre-aeration cavitation sparger system developed by Eriez. Using coal, cavitation was applied to a flotation feed stock studied in laboratory setting in the USA. This feed pretreatment technique resulted in a significant increase in recovery and flotation kinetics. The Feed Air Jet was also installed at an industrial plant in Brazil and enhanced the overall metallurgy by increasing the mass recovery of the iron (Fe) values while reducing the amount of entrained iron in the tailings stream.
Keywords
Feed air jet; Cavitation; Pre aeration; Flotation.
Feed air jet; Cavitation; Pre aeration; Flotation.
How to refer
Santos, Nilce Alves;
Duarte, Fábio;
Fan, Maoming;
Honaker, Rick;
Baldessin, Adriana;
Pinheiro, Cezar de Paula.
FEED AIR JET – A CAVITATION SPARGER SYSTEM FOR
ENHANCED FLOTATION RECOVERY
,
p. 2769-2780.
In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking,
Rio de Jabeiro,
2012.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-22705
