flotation process

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flotation process

flotation process in mineral treatment and mining, process for concentrating the metal-bearing mineral in an ore . Crude ore is ground to a fine powder and mixed with water, frothing reagents, and collecting reagents. When air is blown through the mixture, mineral particles cling to the bubbles, which rise to form a froth on the surface. The waste material (gangue) settles to the bottom. The froth is skimmed off, and the water and chemicals are distilled or otherwise removed, leaving a clean concentrate. The process, also called the froth-flotation process, is used for a number of minerals, especially silver.

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flotation separation

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

flotation separation A concentration process where by finely ground ore is dispersed in water containing a flotation reagent which causes selected minerals to become hydrophobic. Aeration and agitation of the suspension allows hydrophobic particles to float while unaffected minerals sink. The floating particles are skimmed off or overflow the flotation cell.

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AILSA ALLABY and MICHAEL ALLABY. "flotation separation." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (November 12, 2009). http://www.encyclopedia.com/doc/1O13-flotationseparation.html

AILSA ALLABY and MICHAEL ALLABY. "flotation separation." A Dictionary of Earth Sciences. 1999. Retrieved November 12, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-flotationseparation.html

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	New E-Learning Course on Flotation Provides an Understanding of the Necessity of Subsequent Issue of Shares and Their Forms. Business Wire; 3/7/2008
	African Copper Plc: Locked Cycle Flotation Results Improve Recoveries at Dukwe. Business Wire; 2/21/2006
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Related articles from newspapers, magazines, and more

	Flotation advances.(innovations of flotation technology systems utilized in mineral processing) Magazine article from: Mining Magazine; 11/1/1998; ; 700+ words ; ...mineral processing. Flotation is, arguably, the...poor. The flotation process is controlled by the...technological flotation processes, the elaboration of...optimisation of flotation processes and conditioning systems...existing technology to process the resultant ...
	Flotation cells. Magazine article from: Mining Magazine; 6/1/1991; ; 700+ words ; Flotation Cells The mining industry...tackling these problems, flotation plant operators and the...trend toward the need to process tonnages greater than 100...development and use of ever larger flotation machines. In general...
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	Reverse column flotation of iron ore Magazine article from: Minerals & Metallurgical Processing; 5/1/2007; ; 700+ words ; ...product, a rougher/cleaner reverse flotation circuit would be considered a rougher/scavenger circuit in other flotation processes. Because of the nature of reverse flotation, the demands that it makes on flotation...
	Developing flotation technologies. (shortened version of a paper presented at the Minprep '91 conference) Magazine article from: Mining Magazine; 6/1/1991; ; 700+ words ; ...Technologies Until recently flotation was almost completely dominated...evaluation of earlier novel flotation machines and new innovative...has led to improvements in process economics, through savings...offers a selected review of flotation systems that aim to improve...
	Flotation drying: reasons for change: noncontact flotation drying enables a printer or converter to print or coat both sides of a web simultaneously, all while avoiding the risk of scratching delicate substrates. Could flotation drying provide the best fit for your web drying process?(Dryers) Magazine article from: Process Heating; 2/1/2008; ; 700+ words ; ...reasons to change to a flotation dryer are many. In a flotation dryer, the web floats...so the evaporation process can begin. As the...dry/ coat/dry process, it can save time...the air bars in a flotation dryer, cleaning...
	Improved flotation of arsenopyrite by ultrasonic pretreatment Magazine article from: Minerals & Metallurgical Processing; 5/1/2003; ; 700+ words ; ...pyrite and arsenopyrite. Flotation of sulfide minerals from refractory...can then be pretreated by processes such as fine grinding (Lehman...with arsenopyrite, the poor flotation response of this mineral results...Wang, 1989). Arsenopyrite flotation has been conventionally performed...
	New Flotation Setup Provides Optimal Recovery for Macraes Gold Magazine article from: Engineering and Mining Journal; 7/1/2008; ; 700+ words ; ...largest commercially operating flotation cell. The new installation...s global technology manager-flotation process and Alan Berzins, project manager...consisted of an Outotec Flash flotation cell on the cyclone underflow...
	Testing of pneumatic flotation in iron ore processing Magazine article from: Minerals & Metallurgical Processing; 11/1/2001; ; 700+ words ; ...efficiency and economics of the flotation process. Fundamentally, a flotation machine is required to generate gas...more cost-effective and efficient processes. Initially, most pneumatic flotation devices were of the agitation type...
	Froth flotation - an old process with a new outlook. (applications of flotation technology) Magazine article from: Mining Magazine; 5/1/1993; ; 700+ words ; Floth flotation as a general solid/solid separation process is currently showing growth...occurring in its preceding sister process, size reduction. Size reduction...clearly a much more costly process than flotation from both capital and operating...