flotation process


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flotation process,

in mineral treatment and mining, process for concentrating the metal-bearing mineral in an oreore,
metal-bearing mineral mass that can be profitably mined. Nearly all rock deposits contain some metallic minerals, but in many cases the concentration of metal is too low to justify mining the ore.
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. 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.
References in periodicals archive ?
So, recycling the prints with text in typeface Times New Roman, a slightly higher number of particles in the handsheets by stages of deinking flotation process in relation to the handsheets obtained with recycling of prints with the typeface Arial is noticed.
S., "Effect of Frother on Rising Rate of Bubbles in Flotation Pulp," in "Role of Gases and Reagents in Flotation Processes," I.
Lower efficiency of the flotation process for sample aged 20 days can be seen and a small shift toward the blue area is noticed.
The project will break down into three phases: in the first technical input into the flotation documentation will be provided; in the second a team of IMC consultants will provide due diligence and a competent person's report covering environmental, engineering, materials handling and marketing issues; the third phase will see IMC providing continuing assistance during the flotation process.
This should ensure the entire flotation process is carried out in a structured and controlled manner and remove any 11th hour "surprises".
Other important parameters are: hardness of water, dissolved and colloid substances, size of ink particles, degree of hydrophobicity of ink particles and hydrodynamic parameters of the flotation process. [Lassus, 2000; Thompson, 1997].
However, one source said it was still 'full steam' ahead with the flotation process.
He said: 'A company must have a strong management team, not just to manage the flotation process itself, which can swallow up a large amount of work, but the team's track record will have an enormous impact on brokers and, ultimately, new investors.
The flotation process is controlled by the thermodynamics, kinetics and hydrodynamics of the system.
The flotation process comprises crushing and grinding to a grain size of less than 38 micrometres (microns), leading to de-sliming to remove particles less than 8 micrometres, then the removal of barren magnetite through magnetic separation.
NStar chief executive Andrew Mitchell said: "We hope to de-bunk any myths surrounding the flotation process and take a pragmatic look at why this may be a viable option for ambitious local businesses to consider when looking to raise equity.