Glencore Technology have introduced the first accurate online calculator for estimating the required Cell installation for a given flotation circuit.
|Stainless steel wash water system in coal flotation. Image ©Glencore|
The online calculator, available for free, takes key parameters like commodity and cell duty to decide what calculations are needed.
It takes specific feed and concentrate grades, recovery targets and percentages of solids and it builds each stage through roughers, cleaners and recleaners.
The result is a powerful indicator of what the recommendation could contribute to a flotation circuit and to the downstream flowsheet. It reveals what type of Jameson Cell would deliver the outcome and how many bubble-generating downcomers would be required.
While the principle of using air bubbles to recover particles is the basis of the technology, it is the way air bubbles are generated and how the bubbles and particles interact that make Jameson Cells unique.
In the Jameson Cell, particle-bubble contact takes place in the downcomer. The tank’s role is froth-pulp separation and may incorporate froth washing to assist in obtaining product grade.
With no agitators, blowers or compressors, Jameson Cell installation is simple and operation is extremely energy efficient. Power consumption is much lower than the equivalent mechanical or column flotation cell. The energy for flotation is simply delivered by the conventional feed pump.
Optimal Jameson Cell performance is maintained by delivering a constant volumetric flowrate of pulp to each downcomer. While operating plants experience fluctuating process flows, the Jameson Cell is equipped with a tailings recycle system, that automatically compensates for feed variations. In addition to maintaining consistent and optimal downcomer operation, the tailings recycle improves metallurgical performance by giving particles multiple ‘passes’ through the downcomer contacting zone. The Jameson Cell’s ability to provide better selectivity and to control entrainment means product grade is not affected.
Virginia Lawson, Jameson Cell’s Technology Manager, says, “This is the first time an accurate online estimation tool has been delivered to the market, and it’s incredibly insightful. I think many companies have been coy to share this depth of information, but there’s no loss provided the indicator is meaningful.”