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Typical copper flotation tails grade

  • NEWCRESTS INDUSTRY FIRST APPLICATION - Eriez Flotation

    gangue-mineral composite particles as the primary driver for copper losses from the flotation circuit, accounting for over 75% of the contained copper grade in tailings. Figure 2. AMTEL Copper deportment in rougher scavenger tails Since flotation is a surface

  • (PDF) A Review of the Flotation of Copper Minerals

    in the flotation of low-grade copper oxide ores from DongChuan mine. From the series of laboratory scale The rougher flotation tests yielded an average copper . recovery of 38.4% with a

  • QUALITY IMPROVEMENT OF COPPER CONCENTRATES BY

    Trans. Indian Inst. Met. Vol. 47, Nos.2-3, April-June 1994, pp. 89-101. QUALITY IMPROVEMENT OF COPPER CONCENTRATES BY COLUMN FLOTATION S. Prabhakar, G. Bhaskar Raju

  • IMPROVED RECOVERY, RELIABILITY AND WEAR AFTER

    bility at Nui Phao, but the copper and bulk sulfide flotation (BSF) rougher circuits still experienced inefficiencies. Since commissioning, Nui Phaos metallurgical perfor-mance of the copper and BSF roughers was below expec-tations. In March 2013, the sulphur grade in the BSF tails was 3.5% S (on average), significantly higher than the

  • R J ATKINSON A M STROUD - SAIMM

    Some 30% of the copper in flotation tailings of the average head grade of 1,61% of copper. hypersthene. Open Circui t Operation Final Tails FIGURE 2 FLOTATION SECTION AT CAROLUSBERG (1 OF 2 SECTIONS) Scavengers " Closed Circui t Operation Final OK 16 CELLS

  • (PDF) CHARACTERISTICS OF MODERN COPPER FLOTATION

    CHARACTERISTICS OF MODERN COPPER FLOTATION CIRCUITS S. Schwarz, D. Alexander and R. Coleman JKTech Pty Ltd University of Queensland Isles Road, Indooroopilly, QLD 4068, Australia [email protected] ABSTRACT As part of the Australian Mineral Industries Research Association (AMIRA) P9 project, methods of characterising both the ore and the machines in flotation circuits

  • Froth Flotation Circuit Design And Basic Testwork

    Most flotation circuits include an initial stage of rougher flotation, followed by a scavenger stage of flotation. The objective of passing through the rougher and scavenger flotation circuits is to maximise recovery of the desired minerals into relatively low grade concentrates that may typically contain 5-15 weight percent of the ore feed

  • Copper Flotation - Mineral Processing & Metallurgy

    Mar 19, 2017· Although a clean rougher tailing can often be achieved at 65-mesh the copper mineral is not liberated sufficiently to make a high grade copper concentrate, thus some form of regrinding is necessary on the rougher flotation copper concentrate.

  • Method of floatation of copper-zinc-pyrite ore (versions)

    1. Method of flotation of copper-zinc-pyrite ore, including grinding in an alkaline medium, air conditioning with reagents - collectors and frothers, collective copper-zinc flotation to produce collective concentrate containing copper minerals and natural-activated sphalerite, and tails, characterized in that as the collector used is supplied in the following sequence composition selective

  • Solving Mass Balances using Matrix Algebra

    Page: 2 The example will use the following design criteria from metallurgical testwork: Plant feed rate 10,000 tonnes/day of 0.5%Cu ore. Overall plant recovery of 90% by weight. Final concentrate grade of 27.5%Cu by weight. Rougher concentrate grade of 7%Cu by weight. Method The method consists of three major operations: creating a diagram of the flowsheet, deriving

  • Copper Sulfide Flotation - Mineral Processing & Metallurgy

    Mar 19, 2017· Copper Sulfide Flotation Circuit Beneficiation of Copper Sulfide by Flotation. Copper, due to the present world demand and price, is of foremost interest to the mining industry. Many new properties are either in the process of being brought into production or are being given consideration. Copper minerals usually occur in low grade deposits and

  • Estimation of Copper and Molybdenum Grades and Recoveries

    After flotation stages, a concentrate was produced with an average grade of 28% - 30% copper and 0.7% - 0.8% molybdenum. From the previous experience, some factors that have an important role in the flotation of copper ore were selected as the input variables. 3.

  • Grade-recovery curves: A new approach for analysis of and

    Oct 01, 2012· In this fitting, the grade of copper in the floatable material (GMax) is 34% (this grade is very close to the grade of copper in Chalcopyrite mineral), the grade of copper in the non-floating component is 0.072%, while b is 0.0000408, indicating that the rate at which floatable material is recovery to the concentrate by true flotation is over 10,000 times higher than the rate at which it is recovered by

  • Copper Flotation

    The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees -- a by

  • Depression of pyrite in porphyry copper flotation

    Average with 95% confidence, N=30 Sample 1 - Rghr Con Sample 2 - Cell 10 Con 0.4 0.5 0.6 Normalised counts Pyrite -SIMS Average with 95% confidence, N=30 Sample 1 - Rghr Con Sample 2 - Cell 10 Con Pyrite in the concentrate is Cu activated Copper and

  • (PDF) Expert control system in column flotation

    SALVADOR CONCENTRATORThe copper ore, mainly composed of chalcopyrite, pyrite, magnetite and hematite, is quite disseminated in the rock. Lower concentrations of bornite, chalcocite and covellite are also found. The average grade is 0.7-0.75% copper and 0.022-0.026% molybdenum.

  • Maximise your recoveries in a flash - Outotec

    Flash Flotation is the instantaneous flotation of liberated, high grade particles from the recirculating load in the grinding circuit. The concept has been around for almost eighty years, although it has only been recently that large scale Flash Flotation circuits have become a reality. The process is widely known however not widely

  • The influence of microwave pre- treatment on copper flotation

    added. The average grade of the samples was found by acid dissolution and then atomic absorption to be 0.35% copper. The flotation procedure used was as follows: The ore was added to the 3 litre flotation cell and 2.5 litres of water added. The machine was switched on and the ore mixed without reagent addition for a period of 2 minutes.

  • Benchmarking Performance of the Two- Copper Sulfide

    Flotation type Cumulative Stage Recovery (%) Sc Grade (%Cu) Time (min) StackCell 24.79 3.59 1.72 Production Scavenger 27.03 3.02 16.97 Denver 36.37 2.58 3.0 In this case, the scaling factor for the StackCells is now slightly higher than unity, while the performance of the production cells is 10 times slower than the Denver result.

  • Evaluating Copper Rougher-Scavenger Flotation Circuit

    Mar 17, 2017· A modal examination of the products produced by the copper flotation rougher-scavenger circuit reveal important information regarding the limits to the efficiency of the process, imposed by mineralogy, fragmentation and flotation capacity. Lets discusses various aspects of rougher flotation circuit performance and how to evaluate its results .

  • Froth flotation - Wikipedia

    Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

  • Copper Flotation

    The copper minerals and waste rock are separated at the mill using froth flotation. The copper ore slurry from the grinding mills is mixed with milk of lime (simply water and ground-up limestone) to give a basic pH, pine oil (yes, it comes from trees -- a by-product of paper mills) to make bubbles, an alcohol to strengthen the bubbles, and a

  • INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF

    low grade (0.17 percent Cu, 0.73 g/t Au). Methods used to establish the appropriated flotation circuits for the treatment of the Hellyer and Cadia ores, as well as the interpretation of the testwork data are discussed in this paper.

  • Characterization of large size flotation cells - ScienceDirect

    May 01, 2006· The typical plant feed tonnage was about 110,000 tpd. The ore containing an average feed grade of 1.26% copper produces a final concentrate of about 40% copper. The flotation circuit (shown in Fig. 1) consists of a rougher stage, with six parallel banks of nine Wemco cells, each 160 m 3. The rougher concentrate, together with the scavenger

  • INTERPRETATION OF FLOTATION DATA FOR THE DESIGN

    low grade (0.17 percent Cu, 0.73 g/t Au). Methods used to establish the appropriated flotation circuits for the treatment of the Hellyer and Cadia ores, as well as the interpretation of the testwork data are discussed in this paper. Plant performance is reviewed in the

  • Copper extraction - Wikipedia

    The average grade of copper ores in the 21st century is below 0.6% copper, with a proportion of economic ore minerals (including copper) being less than 2% of the total volume of the ore rock. A key objective in the metallurgical treatment of any ore is the separation of

  • OPEN ACCESS minerals - MDPI

    Flotation bank composed of N cells. Making the common assumption of first-order flotation kinetics and fully mixed transport, recovery of mineral A and B in an isolated cell is given by: , 1 k k R A A A B B B 1 k k R (2) where kA and kB are the flotation rate constants for mineral A and B and is the average

  • Gold-Precious Metals Keynote - Publications

    The main approaches considered to treat copper-gold ores or gold ores containing copper are: 1. Flotation to generate a copper concentrate containing gold as a coproduct - and cyanidation of the flotation tail and/or other concentrate streams to recover additional gold. 2. Cyanidation of selectively mined ore having low soluble copper. 3.

  • Recent Studies on the Application of - Eriez Flotation

    Flotation recovery higher than 80% was achieved for sphalerite particles up to 1 mm, versus 40% recovery achieved using a conventional, mechanically agitated cell. Excellent recovery of both liberated and composite particles was also achieved during experiments using the HydroFloat to treat a coarse fraction of a typical copper ore.

  • Separation efficiency improvement of a low grade copper

    grade copper-gold ores from open pit and underground sources in two parallel processing trains. The copper flotation circuits upgrade copper content by a factor of 80-160 times from feed to a saleable copper concentrate containing tail,i is the mass flow rate of particles in the i size class in

  • FLOTATION INEFFICIENCIES - LABORATORY TESTING, A

    a copper operation. The reported client recovery was 92% and the clients target was 93% or higher. A sample of the plant tails was floated again in the laboratory. The result indicated that 37% of copper in the tails was recoverable by flotation. In this particular case we did not have kinetic rate data but instead recovery by size data.

  • v116n6a11 Review, evolution, and optimization of the

    flotation tails in the laboratory without any additional reagents, the recovery was seen to improve by an average of 5%, while floating the tails with additional reagents resulted in improvements of up to 10% (Figure 1) The higher the acid-soluble copper feed grade, the higher the observed improvement (Figure 2).

  • 1 Froth Flotation Fundamental Principles

    This tells us that the concentrate has 9.57 times the copper concentration of the feed. 1.1.1 Grade/Recovery Curves While each of these single calculated values are useful for comparing flotation performance for different conditions, it is most useful to consider both the grade and the recovery simultaneously, using a Grade/Recovery Curve.

  • Metallurgical performance analysis of a froth flotation

    Average copper grade: Feed Regrind overflow cyclone and re-cleaner tails Shuhua He, Depression of pyrite in the flotation of copper ore, Thesis, University of South Australia, May 2006.

  • Solved: Working For OK MetLabs, You Receive A Sample Of Co

    Question: Working For OK MetLabs, You Receive A Sample Of Copper Ore From Ray Mining Ltd And Conduct A Flotation Test On 10 Kg Of Ore (feed Grade 1.4 % Copper) To Try And Recover The Copper. After The First Flotation, You Obtain A Concentrate With A Copper Grade Of 31 %, But Only Obtain A Recovery Of 55 %. To Improve The Recovery, You Re-float The Tails, As If

  • 1 Froth Flotation Fundamental Principles

    This tells us that the concentrate has 9.57 times the copper concentration of the feed. 1.1.1 Grade/Recovery Curves While each of these single calculated values are useful for comparing flotation performance for different conditions, it is most useful to consider both the grade and the recovery simultaneously, using a Grade/Recovery Curve.

  • An Overview of Optimizing Strategies for Flotation Banks

    Although a bank is the simplest interconnection of cells in a circuit, i.e., the tails of one cell is the feed to the next cell down the bank, how to operate each flotation cell in a way that the whole bank performance is optimized remains a challenge.Significant efforts have been made towards understanding the effect of operating variables on the flotation performance of an isolated cell [1,2,3].

  • Chapter 7 Energy Use in the Copper Industry

    duction of cathode copper. Assuming an ore grade of 0.55 percent and a recovery rate of87.5 6.4 percent copper in the concentrate, concentrat-ing 1 ton of copper ore requires over 200 billion Btu, or approximately 42 million Btu/ton of cath-ode copper.10 Grinding accountsfor roughly 6 0 percent of the total energy consumed in proc-

  • Metallurgical Accounting Formulas Concentration and

    Mar 17, 2017· R = 100 Cc / (Cc+t (FC)) = recovery % A copper concentrator is milling 15,000 tons/day of a chalcopyrite ore assaying 1.15% copper. The concentrate and tailings produced average 32.7% and 0.18% copper, respectively. I let you do the math!

  • Coarse PartiCle Flotation

    COARSE PARTICLE FLOTATION OF LOW-GRADE GOLD ORE WITH THE HYDROFLOAT TECHNOLOGY M u d A 6 A 5-0 m A 0-2 u T e n c s y l F a es d-d r t. f l h d h - o e f t w h i i t-s. . S l RECOVERY OF VALUES FROM A PORPHYRY COPPER TAILINGS STREAM T-Y a h n A 5-0 m 0-2 g g s 6 4 3-0 u T d-t o h D - t t g s e-t a n r/ s t-s 1 e t e e t-h t-t t-n ircuit d

  • FLOTATION PLANT DESIGN AND PRODUCTION PLANNING

    grade and recovery can be calculated simultaneously using fundamental flotation modelling methods. The MinnovEX Flotation Test (MFT) has been developed to satisfy both of the above requirements. It is a standard bench-scale test that is used to measure the primary floatability characteristics of a sample of ore. The philosophy behind

  • (PDF) BULK FLOTATION OF COMPLEX COPPER ORE Khmer Lee

    From the composite sample tested by Ma and Bruckard (2009), which had a head grade of 0.11% As and 1.2% Cu, it was possible to produce a low-arsenic high-copper concentrate containing 52% of the non-tennantite copper and assaying 2600 ppm As. Computer simulations have shown that for a feed containing a more typical arsenic and copper level (200

  • Analysis of the Effects of Grind Size on Production of

    Province. The feed grade varies from 2.5 to 5% TCu at a milling rate of 40tonnes/ hour. The indicated average concentrate grade is 50% TCu at 95% plant recovery. The existing grind size for the blended ore is 52% passing <75microns. 38microns sieve tray and screened using water pressure, this .

  • Review, Evolution and Optimization of the Kansanshi Mixed

    When floating the flotation tails in the laboratory without any additional reagents, the recovery was seen to improve by an average of 5% while floating the tails with additional reagents improvements of up to 10% were observed (Figure 1). The higher the acid-soluble copper (AsCu) feed grade, the higher the observed improvement (Figure 2).