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2000-5-1 · The majority of research into copper activation during flotation has concentrated on individual sulphide minerals like those in the iron sulphide group (Chang et al., 1954; O'Connor et al., 1988; Bradshaw and O'Connor, 1994), galena (Popov and Vucinic, 1990) and sphalerite (Girczys and Laskowski, 1985) and not on the possible effect of copper
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2019-12-26 · As a result, the residence time of the pulp in the flotation machine will be extended or shortened. Therefore, the pulp concentration indirectly affects the ore recovery rate and concentrate grade by affecting the froth flotation time. 2. Indirectly affect froth flotation by affecting the volume concentration of the froth flotation agent
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2018-12-20 · If the froth machine contains much ore slurry, it will bring a series of adverse effects on flotation cells mineral processing. The main influences are as follows 1 Easy to be mixed in the foam product, so that the concentrate grade is reduced. 2 Easy to cover the coarse grain surface, affecting the flotation of coarse particles
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2016-10-1 · Copper recovery increased from 85% to 90%, 94% and 93% at the end of flotation, in the presence of DP-1777, DP-1775 and DP-1778, respectively. DP-1775 and DP-1778 had a better effect on copper recovery than DP-1777. The presence of biopolymers also led to an increase in flotation rate, seen as the higher copper recoveries in the first concentrate
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The reported dosages of froth flotation reagents imply that the cost associated with these reagents could be marginal in an industrial operation, but in the case of copper sulphide ores the
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1998-3-1 · Froth Based Models While the pulp phase is certainly important in the flotation process, the froth phase ultimately carries the collected solids into the concentrate: It is well known that the froth structure affects significantly the flotation performance, particularly the grade of the concentrate, and for a complete description of the flotation kinetics, the froth phase must be considered
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Each type of a manganese deposit is a problem by itself in the matter of selection of a proper method of concentration, depending on the manganese minerals and their gangue constituents. Hence, this work studied the effect of sodium oleate concentration variation on the froth flotation of manganese ore obtained from Madaka, Niger State, Nigeria
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Effect of Na 2 S on the flotation of Chrysocolla [27]. ... Froth flotation is defined as a physico-chemical process which ... The concentration of oxidic copper minerals is large ly being done by
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In flotation of pyrite, mass transfer of pyrite from the pulp to the froth is the rate-controlling step, whereas the flotation of gangue is controlled by the combined effect of the stability and
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2019-9-20 · In froth flotation process, the pH value of the pulp needs to be paid close attention to at all times. The pH value needs to be measured with a test paper every once in a while to ensure that the pH value remains at a stable value. And the pulp concentration and liquid level need to be stable, ensure scraping, foam to scrape out the full plate
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2020-11-19 · Effect of Increased Ca 2+ and Mg 2+ Concentration in Process Water on Copper Recove ries and Grades Figure 2 shows the impact of increasing ionic st
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2017-12-30 · The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was
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2018-11-27 · It is widely accepted that particles stabilise flotation froths and that stable froths result in improved flotation performance. Predicting the effect of particle addition on froth stability is, however, challenging. Dynamic surface tension measurement using maximum bubble pressure presents an attractive technique to investigate the effect of surfactant and particles at the air-water interface
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