The straight-forward, automatable, Imperial College’s method can control operation of froth flotation cells and improve the performance of the cells making the operation of the circuit more efficient and more cost-effective.
and more cost effective. Froth cameras are installed over . the cell lip to measure the velocity, colour, and stability of froth. The froth velocity correlates with the mass pull from the flotation process and is used to control the operating parameters of the flotation cell; i.e. air flow rate and froth depth.
G-Cell Pneumatic flotation has evolved as a reliable, cost effective and industrially proven technology The pulp is passed through the aeration units by means of a centrifugal pump, which provides energy for the complete mixing of the pulp with air.
In the mechanical flotation cells the feed can be introduced directly to the impeller zone from the side as in a Denver-style Sub A sub-aeration machine. A centrally lo ed paddle-wheel type impeller generates a rotating pulp vortex which extends between two stationary elements: the sand-pipe lo ed at the top of the cell, and the draft tube lo ed at the bottom of the cell. The hydraulic
Frank Traczyk, director of flotation at FLSmidth, believes the mining industry’s need to address declining grades, along with pressure to reduce capital and operational costs, puts a similar burden on original equipment manufacturers OEMs to leverage technology to provide effective solutions that meet customers’ demands.A recent outcome of this effort at FLSmidth culminated in the
MinAssist has therefore added the Flotation Health Check to its suite of off-the-shelf process mineralogy studies; making it quick, simple and cost effective to use the theoretical grade recovery to help identify potential circuit optimisation. Figure 1. A Ore texture defines the theoretical grade recovery curve.
cells and details of this design will be discussed later in this article. The top section of the disc connects to a drive shaft which in turn connects to the pulley/gear-motor drive assembly. The impeller is lo ed in the centre of the cell cross-section with its II/FLOTATION/Flotation Cell Design: Appli ion of Fundamental Principles 1505
the life cycle operational cost for flotation. However, flotation and centrifugal separation only contribute 4% of the total energy contribution from all mining and mineral processing operations. It can be shown that the effective use of an increase in energy can lead to higher concentrate recoveries.
The high intensity of the Jameson Cell means that it is much shorter than conventional column flotation cells see Figure 1 , and it does not require air compressors to aerate the suspension of ground ore particles and water known as a slurry or pulp in the flotation cell. The lack of a requirement for compressed air and the lack of moving parts means that power consumption is less than for