A case study of flotation of a complex Cu-Zn sulphide ore is outlined. Download to read the full chapter text. Chapter PDF. ... Petruk, W. (1987) Applied mineralogy in ore dressing, in B. Yarar and Z.M. Dogan (eds.) Mineral Processing Design, Martinus Nijhoff Publisher, Dordrecht, pp. 2–36.
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Most common isotopes: Cu-63 (69.15 percent natural abundance) and Cu-65 (30.85 percent natural abundance) ... Conditioning Copper Ore for Flotation. ... This arrangement for upgrading concentrates is universal in its acceptance by the ore dressing industry. Two or more stages of cleaning in the same machine are accomplished without …
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In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. ... To control the Alkalinity of the ore some of the reagents that may be used …
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Flotation, in mineral processing, method used to separate and concentrate ores by altering their surfaces to a hydrophobic or hydrophilic condition—that is, the surfaces are either repelled or attracted by water.
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where r is the measured cumulative recovery of either valuable or gangue at time t, R is the calculated equilibrium recovery as t → ∞, and K is a first-order rate constant of mass removal (units of time −1) that describes the shape of the time–recovery curve at small flotation times.Thus, each time-recovery profile can be characterized by two …
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Silver is often associated with lead-zinc ore, copper ore, gold ore, and limonite, and is mainly produced by flotation.The silver intercalation in its silver-bearing minerals is fine and complex in size, and combined beneficiation methods such as flotation-cyanidation and gravity separation-flotation are often used.. JXSC will customize complete silver ore …
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Figure 5 Flotation selectivity in the separation of pentlandite from pyrrhotite using sulfur dioxide and diethylenetriamine with sodium isobutyl xanthate (pH+9.2, 25 g t 1 Dow froth!250). (Reprinted with permissionfrom the CanadianInstitute of Mining, Metallurgy and Petroleum.) Figure 6 Flotation results obtained with Clarabelle ore from
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Abstract The authors discuss application of nitrogen–oxygen–sulfur heterocyclic agents as collectors and frothers in flotation of sulfide minerals. Efficient collectors are the compounds which contain nitrogen heteroatom and sulfur atom in pendent group: they can generate complex compounds, including chelate, with copper, antimony …
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All of our ore flotation solutions address your process holistically, helping you optimize your flotation circuits for higher selectivity, recovery, taste and ultimately cost efficiency. Flotation separation is …
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The combination of flotation and hydrometallurgy had been introduced to dressing the ore in Yunnan, which involves Pt and Pd metallic minerals and serpentines containing high MgO, for recovering ...
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The possibility of selective Cu and Zn leaching from the sample of old pyrite tailings, which is one of the most widespread types of solid waste forming during non-ferrous metal production, using sulfuric acid solutions and water was studied. It was shown that water leaching provided selective extraction of Cu and Zn and comparatively low …
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Floe-Flotation of Chalcopyrite from a Low Grade Cu —Zn Ore by another 7% without affecting the grade much. Moreover, by decreasing the feed size the percentage of Cu reporting to the Zn circuit is minimized from 17.8% to 15.3%. The results are depicted in Fig.3. Effect of Ph on Cu Flotation
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2.1.2. Pristine ore. The raw ore and the flotation tailings were sampled from Dongguashan Dressing Plant (DDP) in Anhui Province. Specifically, the raw ore was taken from the feed belt of the ball mill, and the flotation tailings were obtained from the underflow of the copper scavenging flotation machine.
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In this bulletin the subject of ore dressing is approached from the economic rather than from the technological standpoint, and the supporting data have been compiled with a view to their bearing upon the economic exploitation of ore deposits. Results obtained are stressed rather than the details of processes and the physics and …
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Mineralogical study revealed that the lost Cu in tailings was coarse-grained chalcopyrite with sufficient liberation, confirming traditional HAP was not suitable for the processing of this type ore. Batch flotation tests revealed that the flotation rate and the upper limit of Cu recovery of traditional HAP were very poor, but pulp aeration and ...
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The Flotation Machine, the Selective Mineral Jig and the Unit Flotation Cell have revolutionized flowsheet design and have made it possible for both small and large plants to increase recoveries and economical return. The Unit Flotation Cell and the Selective Mineral Jig have been perfected to meet the most important principle in ore …
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The copper ore in Chilean copper porphyry deposits is often associated with molybdenum minerals. This copper–molybdenum (Cu–Mo) sulfide ore is generally mined from various locations in the mining site; thus, the mineral composition, oxidation degree, mineral particle size, and grade vary. Therefore, in the mining operation, it is common to …
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Conventional Cu–Mo ore dressing circute includes bulk flotation with Cu–Mo concentrate production.
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Cruz et al. used an atmosphere rich in carbon dioxide to improve the flotation performance of Cu–Mo ore with high clay content. Arias et al. proposed a biotechnological treatment for the removal of divalent ions from seawater using a fluidized bed bioreactor completed with the halotolerant ureolytic strain Bacillus sub-tilis LN8B. …
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The flotation methods for copper oxide minerals mainly include direct flotation and sulfidization flotation [62]. Direct flotation refers to mineral flotation by …
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The beneficiation process of lead-zinc ore is mainly processed by flotation, and at present, most of the lead and zinc are obtained by sulfide separation. ... but its inhibitory effect is decreased for galena activated by Cu 2+. Galena that has been inhibited by dichromate is difficult to activate, and can only be activated after treatment with ...
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The Froth Flotation Machine and its operating principles are universally used for all types of flotation problems.This machine finds a wide acceptance due to its flexibility in construction, which allows the machine to be adjusted to handle pulps with divergent physical characteristics, as well as the common and intricate metallurgical …
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The objective of the cycle is the Cu–Mo concentrate with the quality content of copper (23.5%). This objective is reached by the final concentration flotation in lime …
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During the Cu–Mo ore flotation using an optimally dispersed microemulsion of the combined collector agent, a collective Cu–Mo concentrate was obtained with a copper content of 18.2% with an ...
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1. Introduction. Copper (Cu) is a significant metal for the society development and scientific progress, and chalcopyrite is one of the main sources [28].Therefore, the efficient separation and enrichment of chalcopyrite appear to be particularly important, especially the flotation separation of chalcopyrite from sphalerite …
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The control of a milling operation is a problem in imponderables: from the moment that the ore drops into the mill scoop the process becomes continuous, and continuity ceases only when the products finally come to rest at the concentrate bins and on the tailing dams. Material in process often cannot be weighed without a ...
Mineralogical study revealed that the lost Cu in tailings was coarse-grained chalcopyrite with sufficient liberation, confirming traditional HAP was not suitable for the processing of this type ore. Batch flotation tests revealed that the flotation rate and the upper limit of Cu recovery of traditional HAP were very poor, but pulp aeration and ...
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This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was lost in the tailings. (c) The % Cu Loss can be calculated by subtracting the % Cu Recovery from : % Cu Loss = 100 – 95.7 = 4.3% This means that 4.3% of the copper present in the ore was lost in the tailings.
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It should be added that segregation of laterite ores prior the flotation process has shown some improvement in upgrading nickel. The segregation process relies on the addition of calcium chloride or sodium chloride and carbon allowing the formation of nickel and iron chlorides at temperatures between 900 and 1150 °C. Iwasaki et al., …
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The basic factors, principles and variables affecting froth flotation are enumerated in condensed form below: Ore. (a) Mineralogical character. (b) Fineness of grinding. (c) Method of grinding. Agents. (a) …
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In copper–gold ore flotation, the choice of collector is often optimised for copper minerals rather than gold. The occurrence of both native gold and electrum (Au–Ag) in copper ores further complicates the selection of collectors for recovering both copper minerals and gold. ... Most Cu–Au flotation circuits operate at conditions which ...
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