flotating concentrate leaching

PGM extraction from oxidized ores using flotation and …

by leaching ROM ore, it was considered more promising to leach the concentrate as a way of further upgrading it. The flotation concentrate with the highest PGM recovery was leached using sulphuric acid in order to remove the base metals and further enrich it in PGMs. Extractions of 73.3% Cu, 82.9% Ni, and 8.1% Fe were achieved. Keywords

Chloride leaching of silver and lead from a solid residue ...

Chloride leaching of silver and lead from a solid residue after atmospheric leaching… 897 Table 3. Mineralogical composition of flotation copper concentrate and feed for chloride leaching Material unit Bornite Cu 5 FeS 4 Chalcocite Digenite Cu 2 S/Cu 1.8 S Chalco-pyrite CuFeS 2 Pyrite Markasite FeS 2 Covellite CuS Sphalerite ZnS Tennantite Cu ...

Leaching of a copper flotation concentrate with ammonium ...

Aug 03, 2014· The leaching behavior of a copper flotation concentrate was investigated using ammonium persulfate (APS) in an autoclave system. The decomposition products of APS, active oxygen, and acidic medium were used to extract metals from the concentrate. Leaching experiments were performed to compare the availability of APS as an oxidizing agent for leaching of the concentrate …

(PDF) Characterization and Flotation of Sulfur from ...

Vo1. 2, Characteriza tion and Flotation of Sulfur from Chalcopyrite Concentrate Leaching 7 A sodium silicate dosage of 50 g/t inc reases the sulfur grade of the concentrate to 89% with a ...

Influence of Ferric and Ferrous Iron on Chemical and ...

leaching processes. 2. Materials and Methods . 2.1. Minerals . A flotation concentrate was obtained from Sarcheshmeh Copper Mine, Kerman, Iran. Mineralogical investigation on the representative sample was performed by optical microscopy using a Leica phase contrast microscope (DMLP). It showed that the concentrate contained 44.0% chalcopyrite ...

Flotation | ore dressing | Britannica

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.The flotation process was developed on a commercial scale early in the 20th century to remove very fine mineral particles that formerly had gone to waste in gravity concentration plants.

Pressure Leaching of Copper Concentrates

8 October 25th, 2004 Drivers for Concentrate Leaching Cost effective alternative to conventional smelting & refining Capital cost versus greenfield smelter/refinery projects $1,000-2,000 versus $3,000-6,000/annual tonne Ability to utilize existing SX capacity ($300-400/annual mt) Ability to utilize spare EW capacity ($500-600/annual mt) Ability to utilize existing infrastructure

Sulphide Gold Flotation Concentrate CIL Leaching

This simple metallurgical concentrator includes single stage crushing, conveying, primary grinding, spiral classification, gravity concentration, slurry pumping, rougher and cleaner (optional) flotation banks, regrind mill, cyanide leaching tanks, loaded carbon stripping and regeneration as well as refining facility.

GALVANIC INTERACTIONS OF SULFIDE MINERALS IN LEACHING …

galvanic interactions of sulfide minerals in leaching of flotation concentrate from lubin concentrator January 2011 Physicochemical Problems of Mineral Processing 46:21-34

Flotation & Cyanidation Leaching of Concentrate

Mar 08, 2016· Flotation & Cyanidation Leaching of Concentrate. DESCRIPTION: Flotation followed by cyanidation of flotation concentrates. In this flowsheet the flotation concentrates produced are reground and treated by cyanidation leaching. ORE TREATED: Sulphide ores wherein base metal values are negligible (such as pyrite) but with good gold and silver ...

(PDF) Atmospheric leaching of copper flotation concentrate ...

Initially, atmospheric leaching of copper sulphide flotation concentrate from Lubin Concentrator (KGHM, Poland) was used for recovering of copper and accompanying metals (Zn, Co, Ni, Mo, V) [19 ...

Cyanide Leaching of Flotation Concentrate - 911 Metallurgist

Feb 11, 2016· Metallurgical ContentAGITATION Leach TESTSPercolation TestsCHLORINATION TESTSDirect Cyanidation of Raw OreCyanide Treatment of Flotation TailingComparison of Methods When Charles Butters began to take up the work of flotation in our Oakland laboratory, one of the first points brought to our attention was the treatment of the concentrate produced by flotation; J. E. …

Leaching/flotation scrap treatment method - The United ...

For example, when the aforementioned illustrative mixed Nd 2 Fe 14 B/SmCo 5 swarf is dissolved in the preferred sulfuric acid leaching bath described hereabove for 10 minutes, the concentrate was found to comprise, in weight %, 3.2% Al, 0.05% B, 42% Co, 0.4% Cu, 5.2% Fe, is significantly upgraded or enriched in terms of the Sm concentration as ...

Refractory Gold Technology

gold recovery in the mill flotation circuits, and/or the direct treatment of ores. It has been proven effective in the treatment of feeds which have varied in composition from 0.1 to 20% As, and from 1.5 to 50% S. The process is environmentally preferred, eliminating gaseous emissions of sulphur dioxide and arsenic associated with roaster ...

Characterization and Flotation of Sulfur from Chalcopyrite ...

Characterization and Flotation of Sulfur from Chalcopyrite Concentrate Leaching Residue() H. K. Lin. Mineral Industry Research Laboratory University of Alaska Fairbanks, Fairbanks, AK 99775-7240. DOI: 10.4236/jmmce.2003.21001 PDF HTML 7,656 Downloads 9,893 Views Citations.

Gold and copper recovery from flotation concentrates of ...

Jan 24, 2018· The authors present the data on the substance analysis of gold–copper–arsenic flotation concentrate. Gold and copper recovery by autoclave leaching of the concentrate has been studied. It is found that maximum gold and copper recovery under optimum conditions reaches 96 and 92%, respectively. The profitability of the proposed process flowsheet is proved by the technical-and …

How to Remove Mercury from Flotation Concentrate by ...

Jan 06, 2021· A total of 3.5 L of the solution was prepared by leaching flotation concentrate at 80° C for 2 hr. The solution contained, in grams per liter, 60 Cu, 30 Fe, 70 Ca, 80 Hg, and 42 HCl. Electrolysis was performed at 5.2 amp and 3.2 v. A total of 2,360 g of concentrate was leached, 428 g of dry residue was removed, and 1,647 g Hg was produced at ...

Assessing a two-stage heap leaching process for Platreef ...

1 Assessing a two-stage heap leaching process for Platreef flotation concentrate James M. †Mwase†1, Jochen Petersen, Jacques J. Eksteenβ † Centre for Bioprocess Engineering, Department of Chemical Engineering, University of Cape Town, Rondebosch, South Africa β Department of Metallurgical Engineering, Western Australia School of Mines, Curtin University, GPO

The Investigation of High-Temperature Autoclave Leaching ...

Keywords: Autoclave leaching, flotation concentrate, recovery of copper and zinc 1 Introduction The aim of this work is the determination of the parameters of autoclave leaching of «Maykain B» flotation concentrate, at which the maximum extraction of copper and zinc in the solution can be achieved [1, 2].

Frontiers | Selective Pre-leaching of Tellurium From ...

Mar 25, 2021· With a telluride-type gold ore flotation concentrate as the research object, the Na2S + NaOH collaborative leaching process was applied to selectively separate tellurium before the cyanide leaching of gold and silver. The effects of process parameters including the type of leaching agent, the amount of leaching agent, liquid-solid ratio, leaching temperature, and leaching time on the …

Atmospheric leaching of copper flotation concentrate with ...

A commercial flotation concentrate from flotation circuit at Lubin Concentrator (ZWR Lubin) was used as leaching feed. The output of the concentrate at the Lubin plant is almost 0.5 Tg (teragrams)/year and corresponds to the copper production of 65 Gg/year. The feed …

Froth flotation - Wikipedia

Froth flotation is a process for selectively separating of 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.

Peroxide Leaching of Gold Silver Sulfide Flotation Concentrate

Aug 11, 2018· Concentrate Leach Circuit. Third stage cleaner flotation concentrate gravity flows to the concentrate thickener. The thickener feed has a fine particle size distribution, 80% minus 37 microns, which is a result of the rougher concentrate regrind circuit. Regrinding is used to liberate gold from pyrite encapsulation as well as allowing ...

Selective Pre-leaching of Tellurium From Telluride-Type ...

With a telluride-type gold ore flotation concentrate as the research object, the Na2S + NaOH collaborative leaching process was applied to selectively separate tellurium before the cyanide leaching of gold and silver. The effects of process parameters including the type of leaching agent, the amount of leaching agent, liquid-solid ratio, leaching temperature, and leaching time on the leaching ...

Bioleaching of marmatite flotation concentrate by ...

Nov 01, 2004· Chemical leaching of marmatite flotation concentrate by Fe 3+ ion. Fig. 4 shows the effects of Fe 3+ concentration on the chemical leaching of marmatite flotation concentrate. This result indicated that the extraction of zinc rapidly attained its highest value after 1 day and that the extent of extraction increased with the concentration of Fe ...

THIOSULFATE LEACHING OF SILVER FROM A SOLID RESIDUE …

The leaching feed in the study was a commercial flotation copper sulfide concentrate produced at the Lubin Concentrator (KGHM Polska Miedz S.A.). The concentrate contained copper and other metals, such as Zn, Co, Ni, Ag, V, and Mo, which significantly increase the value of this material. A continuously

(PDF) LEACHING AND FLOTATION OF CONCENTRATE AND MIDDLIGS ...

Sep 24, 2012· leaching and flotation of concentrate and middligs in flotation circuits of carbonate -shale copper ores September 2012 Conference: XXVI …

Peroxide Leaching of Gold Silver Sulfide Flotation Concentrate

Aug 11, 2018· Concentrate Leach Circuit Third stage cleaner flotation concentrate gravity flows to the concentrate thickener. The thickener feed has a fine particle size distribution, 80% minus 37 microns, which is a result of the rougher concentrate regrind circuit.

7 Factors Affecting Froth Flotation Process - JXSC Machine

Dec 20, 2018· (2) Concentrate grade. The general rule is that the concentrate grade is higher when ore flotation is carried out in a leaner slurry, while the concentrate grade is reduced when it is floated in a thicker slurry. (3) The dosage of the agent. The flotation agent should maintain a certain mass fraction in the pulp to have a good flotation effect.

Gold recovery enhancement from a refractory flotation ...

Mar 01, 2002· These interesting results prompted us to investigate the metallic leaching behavior of the mixed cultures from a complex refractory flotation concentrate from Fujian, China. Although biooxidation is a popular treatment option, the oxidation is slow when measured by days or weeks and needs careful control of the arsenic content of the feed ...

Recovery of Platinum, Palladium, and Gold From Stillwater ...

FLOT ATION CONCENTRATE BY A ROASTING·LEACHING PROCEDURE By E. G. Bdglin, 1 J. M. Gomes, 2 T. G. Carnahan,2and J. M. Snider3 ABSTRACT The Bureau of Mines devised a procedure for selectively extracting platinum-group metals (PGM) and gold …

TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD …

Gold grade of the head flotation concentrate was 29.6 g/t. The concentrate size was 80% -80 um. Mineral composition of the concentrate comprises 17% of rock-forming minerals, 59% of pyrite and 24% of arsenopyrite. Gold size (Figure 3) in the concentrate of interest was less than 10-15 um, some gold

RECOVERY OF COBALT AND NICKEL BY ATMOSPHERIC …

Recovery of cobalt and nickel in atmospheric leaching of flotation sulfide concentrate… 197 even the lowest iron(III) ions addition would have a significant effect on the Co and Ni leaching rate and efficiency (Figs. 6 and 7). Fig. 6. Effect of iron(III) ions concentration on Co leaching recovery; s/l = 1:8, initial H 2 SO 4 concentration 50 ...

Copper Flotation And Leaching

Copper extraction . Supergene sulfide ores rich in native copper minerals are refractory to treatment with sulfuric acid leaching on all practicable time scales and the dense metal particles do not react with froth flotation media Typically if native copper is a minor part of a supergene profile it will not be recovered and will report to the tailings

Recovery of PGMs from an oxide ore by flotation and leaching

(34.5% Pt and 7.1% Pd). The best leaching results of 48% Pt and 24.5% Pd were obtained using aqua regia solution though it is non-selective. Leaching of ROM ore is generally not preferable as it leads to high reagent consumptions. In this study it was postulated that leaching of low grade flotation concentrate would be preferred.

flotating concentrate leaching

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