1 Froth Flotation – Fundamental Principles
1. Copper concentrates manufacturing process. Copper concentrates are mainly produced by flotation. The ore is crushed and milled to a particle size of less than 100 …
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Utilization of acetic acid-[(hydrazinylthioxomethyl)thio]-sodium …
The flotation separation results of the Cu-Mo bulk concentrate showed that AHS could be used as a selective depressant in copper-molybdenum separation with the advantages of a lower dosage and environmentally friendly nature compared to a conventional depressant, such as sodium sulphide, Nokes reagents, and cyanide. 3.2.2.
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Recovery of high-grade copper concentrate from sulfur-rich …
The overall batch experiment consisted of bulk roughing and cleaning flotation, followed by the removal of pyrite with the addition of depressant. ... was wet ground in a stainless-steel ball mill (XMQ-Φ 240 × 90 mm) at a pulp density of 66% solids until to achieve 80% passing (P 80) 74 μm. The ground slurry was transferred into a 1.5 L ...
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A novel hydrometallurgical treatment for the recovery of copper…
Bulk flotation followed by a novel hydrometallurgical process can dodge these difficulties. In this work, an integral hydrometallurgical process consists of two ferric leaching steps, followed by a hot brine leaching stage, is proposed to recover target metals from a bulk sulphide concentrate (2.9% Cu, 7.4% Zn, 2.5% Pb, 67 ppm Ag and 37.2% Fe).
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Changtao WANG | Doctor of Engineering | Central South …
To remove the adsorbed reagent of copper–lead mixed concentrate in bulk flotation, this study investigates the removal effect of sodium sulfide (SS) through micro-flotation, adsorption tests ...
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The Inadvertent Activation of Silicate Minerals Flotation and …
Currently, the feed input at the bulk flotation stage is 84,500 ton/day, 30% higher than its designed value, producing 6000 ton of Mo per year in the form of molybdenum concentrate. Recently, novel copper flotation collectors have been introduced into the bulk flotation to improve production efficiency and eco-friendly of the …
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Design Flotation Plant
Design Study for 400-Ton per Day Flotation Plant. ... Thickening and filter capacity is selected for a 10 to 1 ratio of concentration as would be the case when treating a 3% copper ore with the copper mineral being chalcopyrite. In such case it would be necessary to filter 50 to 55 tons of concentrates each day. ... Bulk or Selective Flotation.
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Bulk flotation vs. Selective flotation
For Copper and Lead flotation: We need to float both minerals 1st. We call it Bulk flotation. Then this bulk concentrate will go to Cleaning stage where we depress Copper, and float Lead-This process we call selective flotation. Case study-2. For Zinc and Lead Flotation. Here we depress Zinc and float Lead-This is called selective flotation ...
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Montana Tech Library Digital Commons @ Montana Tech
improving the rougher flotation of molybdenite from Cu-Mo bulk concentrate and gold-bearing pyrite from gold tailings. Copper/molybdenum samples were provided by Montana Resources in Butte, Montana. A two-factor factorial design of experiments was used to identify HPSA operating conditions which gave the highest increase in flotation …
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A Review of Recent Advances in Depression …
Typically, the separation and recovery of chalcopyrite (CuFeS 2) and molybdenite (MoS 2 ), the major Cu and Mo minerals, respectively, in PCDs are achieved by two-step flotation involving (1) bulk flotation to …
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Flotation data for the design of process plants Part 2
programme two ßowsheets producing either one bulk or four separate concentrates, were proposed for ßotation locked cycle test work. The bulk ßotation ßowsheet was aimed at …
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A study of mechanisms affecting molybdenite recovery in a bulk copper …
Copper and molybdenum recovery data for a one year period of a typical porphyry copper flotation plant are reported in Fig. 1, showing high variability of molybdenum recovery with time. Download : Download full-size image; Fig. 1. Historical recovery data for a typical porphyry copper plant. Bulk copper/molybdenum flotation …
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PDC & Mass Balance
Au Recovery (Copper Concentrate) % 53.9 Testwork Reports Au Recovery (CIL Circuit) 19.2 Testwork Reports ... Crushed Ore Bulk Density t/m3 1.65 Engineering Design Angle of Repose degrees 37 Engineering Design ... Copper and Gold Flotation Rougher / Scavenger Flotation
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Statistical investigation of flotation parameters for …
This study is focused on the froth flotation reprocessing of a copper mineral from flotation tailings. The effects of flotation parameters including pulp density, …
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Copper Sulfide Flotation
Larger plants generally will incorporate a circuit for molybdenum recovery from the copper concentrate by flotation. "Sub- A" Flotation is standard for this service. ... Density of copper: 8.92 grams per cubic centimeter; Phase at room temperature: Solid; Melting point: 1,984.32 degrees Fahrenheit (1,084.62 degrees Celsius)
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A Review of Recent Advances in Depression Techniques for Flotation …
Porphyry copper deposits (PCDs) are some of the most important sources of copper (Cu) and molybdenum (Mo). Typically, the separation and recovery of chalcopyrite (CuFeS2) and molybdenite (MoS2), the major Cu and Mo minerals, respectively, in PCDs are achieved by two-step flotation involving (1) bulk flotation to separate Cu–Mo concentrates and …
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Statistical analysis of species interaction and optimization of copper
The resultant grade of the copper concentrate is 20-22% Cu, and that of the pyrite concentrate is 0.21-0.25% Cu. In this way satis factory results by far better than that of the bulk differential ...
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Estimated Water Requirements for the Conventional …
This report provides a perspective on the amount of water used by a conventional copper flotation plant, including the makeup water required to compensate for water losses. Much of the global supply of copper originates from mines that also produce byproduct molybdenum, but for simplicity, a single copper concentrate has been modeled for this ...
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Evaluation of the possibility of copper recovery from tailings …
Molybdenite, which is the primary economic mineral, is recovered over two stages: A bulk flotation concentrate is produced using kerosene as a collector and pine oil as a frother, and then the concentrate is then reflated to separate the molybdenite products and tailings (Yin et al., 2017b).
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Copper Flotation
A Copper Flotation Flowsheet. Because the copper in this type of ore usually assays only plus or minus 1% copper, the porphyry copper operations must be relatively large in order to be commercial. The flowsheet in this study illustrates a typical 3,000 ton per day operation. In general most operations of this type have two or more …
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Full article: The Direct Leaching of Nickel Sulfide Flotation
Two different flotation concentrates were trialed for bioleaching that differed in terms of their nickel and arsenic contents, the first concentrate graded 10.5% Ni and 1.3% As and was obtained as a by-product of talc processing, the second concentrate was produced from reverse flotation of the first concentrate and graded 14.3% Ni and 15.4% …
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New insights into the reagent-removal mechanism of
To remove the adsorbed reagent of copper–lead mixed concentrate in bulk flotation, this study investigates the removal effect of sodium sulfide (SS) through micro-flotation, adsorption tests, equilibrium speciation analysis, electrochemical analysis, and first-principle density functional theory (DFT) calculations.
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Evaluation of the replacement of NaCN with depressant …
Therefore, the bulk concentrates processes characteristics of a higher grade of molybdenum but a lower grade of copper. The bulk concentrate, which was obtained from the China Molybdenum Co., Ltd, with 0.95% Cu and 7.23% Mo collected from a day shift, was used for the flotation separation of copper-molybdenum sulphides in all of the …
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Minerals | Free Full-Text | Sustainable Use of Copper …
At the optimum flotation conditions where 1000 g/t (NH 4) 2 SO 4, 1000 g/t Na 2 S, 800 g/t SIAX and 40 g/t pinitol oil were used, a copper concentrate with 18.23% copper grade and 73.46% recovery was obtained .
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Combined Effect of Operating Parameters on …
The results of statistical analyses indicated that the concentrate collection time and pulp density were the most influential parameters on concentrate grade. Considering copper recovery, …
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Insight into mineral flotation fundamentals through the DFT …
The surface is the contact region where many adsorptions occur during the flotation process. Unlike these of stable coordination composition in the bulk structures, the atoms of the surfaces tend to form different terminations due to the breaking of the fracture bonds [33].Therefore, the surface structure has very different atom states from the bulk, …
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A novel hydrometallurgical treatment for the recovery of copper…
The leaching of the concentrate that contained 14.7% of copper and 5.0% of zinc for three leaching cycles (total duration, 5.75 h) allowed the obtainment of a leach residue containing 15.3 and 0. ...
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Copper Mining | Bulk Ore Sorting | Thermo Fisher Scientific …
Optimizing control of the flotation circuit makes it possible to: Reduce reagent consumption; Quickly detect changes in the feed material, or process upsets; Ensure target concentrate quality; Track copper, as well as other valuable and deleterious elements to assess process performance and maximize recovery.
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Copper Concentrate
Flotation is commonly used to concentrate copper sulfide minerals, such as chalcopyrite (CuFeS 2). In this example, the production of a copper concentrate is investigated. After mineralogical examination, we decided to divide the ore into four species for characterization: Cp ( CuFeS 2 ), CpPy (95% CuFeS 2 - 5% FeS 2 ), PyAs (70% …
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(PDF) Separation of copper flotation concentrates …
Industrial and laboratory flotation copper concentrates were subjected to separation into density fractions by means of heavy liquids in the form of sodium polytungstate aqueous solutions....
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