• Flotation of Arsenopyrite from Gold Ore

    The pure arsenopyrite sample was obtained from Wards Science Establishment Inc. It was a lump of high pure mineral, which was associated with some quartz. The sample was first crushed and sieved to -2 mm using jaw crusher, double-roll crusher and screens. Then the sample was ground to -120+38µm and -38µm fractions using dry ceramic mill. Finally the quartz and other gangue in the sample were

  • Drug Flotation Ore Arsenopyrite Gold

    Drug Flotation Ore Arsenopyrite Gold . Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

  • Arsenopyrite Flotation & Depression Arsenopyrite Rejection

    Flotation and depression control of arsenopyrite through pH and xanthate as the collector. Arsenopyrite Rejection

  • US5171428A Flotation separation of arsenopyrite from

    Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO 3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings

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  • Gold Recovery 101 Sepro Mineral Systems

    Gold is often associated with many sulfide minerals including arsenopyrite, pyrite, chalcopyrite and flotation circuit. Refractory Gold Any ore that is not readily amenable to recovery by conventional cyanide leaching at a reasonable grind size can be considered refractory. The three primary factors that cause gold ores to be refractory are:

  • Drug Flotation Ore Arsenopyrite Gold

    Drug Flotation Ore Arsenopyrite Gold caesarmachinery. Drug Flotation Ore Arsenopyrite Gold . Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc.

  • Gold Pyrite, Pyrrhotite and Arsenopyrite Recovery

    One of the more common classes of ores containing gold is when gold is associated with pyrite, pyrrhotite, and arsenopyrite. This is the area of gold recovery that has probably received the most research and plant optimization support especially in light of the long history of South African industrial practice. From a reagent viewpoint, charged water soluble collectors such as xanthates

  • CN100485059C Method for recovering gold from sulphide

    The invention relates to a method for recovering gold from a sulphidic concentrate, particularly one containing arsenopyrite and/or pyrite, hydro- metallurgically. The concentrate is first subjected to leaching with a concentrated solution of alkali chloride and copper (II) chloride, by means of which the copper minerals and some of the gold in the concentrate are made to dissolve.

  • 17 Flotation of Gold Ores

    Flotation of Gold Ores 17.1 INTRODUCTION The recovery of gold from gold-bearing ores depends largely on the nature of the deposit, the mineralogy of the ore and the distribution of gold in the ore. The methods used for the recovery of gold consist of the following unit operations: 1.

  • Gold Flotation Mineral Processing & Metallurgy

    Metallurgical ContentGOLD FLOTATIONGOLD FLOTATION MACHINES Calculating Flotation-cell RequirementsGOLD FLOTATION REAGENTSREAGENTS USED IN FLOTATION OF GOLD ORESFrothers and Froth ModifiersREAGENTS FOR SILVER ORE FLOTATIONPRECIPITATING EFFECT OF FLOTATION REAGENTSPRIMARY SLIFruitfulOLD FLOTATION FLOWSHEETFlotation Unit in the Grinding CircuitFlotation of Cyanide Residues Though the gold

  • Arsenopyrite an overview ScienceDirect Topics

    Bulk flotation followed by sequential flotation of gold-bearing sulphides, and depression of stibnite. This method was practiced at the Bradly concentrator (USA) and consisted of the following steps: (a) bulk flotation of stibnite and gold-bearing sulphides at pH 6.5 using lead nitrate (i.e. Sb activator) and xanthate, (b) the bulk concentrate is reground in the presence of NaOH (pH 10.5) and

  • Gold Recovery 101 Sepro Mineral Systems

    Gold is often associated with many sulfide minerals including arsenopyrite, pyrite, chalcopyrite and flotation circuit. Refractory Gold Any ore that is not readily amenable to recovery by conventional cyanide leaching at a reasonable grind size can be considered refractory. The three primary factors that cause gold ores to be refractory are:

  • The selective flotation of arsenopyrite from pyrite

    The gravity–flotation combined beneficiation pretreatment process provided a feasible method for the refractory gold ore and ensured the effective recovery of gold. FeS2) from arsenopyrite

  • Flotation of Gold and Gold-Bearing Ores ScienceDirect

    Jan 01, 2016· Flotation takes place at neutral or slightly acid pH values with the addition of lead nitrate as activator and xanthate as collector. The Campbell Mine in Ontario (Chang et al., 1983) treats an arsenopyrite–pyrite ore and the flotation concentrate is pressure leached. Flotation reagents consist of copper sulfate as activator, PAX and AF208 as

  • ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION

    ARSENOPYRITE ENRICHMENT BY COLUMN FLOTATION P. MAVROS, K.A. KYDROS and K.A. MATIS Department of Chemistry, Aristotle University, GR-540 06 Thessaloniki, Greece (Received 4 February 1993; accepted 2 July 1993) ABSTRACT Arsenic-rich, gold-bearing pyrite concentrates may be further enriched in arsenic W assist

  • Pressure Oxidation of Arsenopyrite Concentrates at New

    New England Antimony Mines has operated the Hillgrove Gold Plant at Hillgrove in New South Wales since 1969, producing stibnite and arsenopyrite products by selective flotation. Gold is present in the ore as fine free gold, gold associated with stibnite and gold associated with arsenopyrite, with some ten to 20 per cent of the gold.

  • (PDF) A Brief Review of Auriferous Sulphide Flotation

    Notwithstanding, in the separation of gold bearing sulphides during froth flotation, a concentrate made up of both pyrite and arsenopyrite is obtained due to their similar characteristics and

  • Gold with Pyrite, Pyrrhotite, Marcasite and Arsenopyrite

    Apr 17, 2016· Gold with Arsenopyrite Arsenic Minerals Gold is occasionally associated with arsenic minerals as well as pyrite, stibnite, chalcopyrite, etc. Direct cyanidation in these cases is seldom possible. Additionally, when gold is associated with readily soluble arsenic compounds, there is the hazard, in precipitation, of forming arsine, AsH3.

  • Design and Commissioning of a 40 Tonne per Day Flotation

    The Harbour Lights Mine situated at Leonora in Western Australia, mines a refractory sulphidic gold ore. The main sulphide minerals are pyrite and arsenopyrite. Due to the association of gold with the pyrite and arsenopyrite, gold recovery is not amenable to the normal cyanidation process. A pyrite/arsenopyrite flotation concentrate is produced at Harbour Lights.

  • 17 Flotation of Gold Ores

    Flotation of Gold Ores 17.1 INTRODUCTION The recovery of gold from gold-bearing ores depends largely on the nature of the deposit, the mineralogy of the ore and the distribution of gold in the ore. The methods used for the recovery of gold consist of the following unit operations: 1.

  • Alkaline Oxidative Leaching of Gold-Bearing Arsenopyrite Ores

    solution on arsenopyrite dissolution were investigated. It was found that the reaction was diffusion controlled under the conditions investigated. This report presents the results of bench-scale studies on the development of an alkaline oxidative procedure for pretreating gold-bearing arsenopyrite ore.

  • antimonygold ore flotation system in canada

    Drug Flotation Ore Arsenopyrite Gold Henan Panola Heavy . The Effect of Sulfuriation Process on Flotation of Copper flotation gold ore ore containing other gold bearing sulphide minerals and siliceous gangueThere are also some research documented on the flotation of gold bearing pyrites 3 and arsenopyrite 4Gold ore flotation separar flotation

  • FLOTATION SEPARATION OF ARSENOPYRITE FROM PYRITE

    The pyrite rougher flotation tailings in this example were treated differently than as shown in Fig. 1. Instead of floating a bulk sphalerite-arsenopyrite concentrate, the arsenopyrite was depressed during sphalerite flotation using additions of base, cyanide, and xanthate collector and then subsequently activated with copper sulfate and collector and floated.

  • Arsenic mobility from arsenopyrite-rich gold mine waste

    The ore assemblage of quartz-carbonate veins contains free gold overgrowing and refractory gold inside arsenopyrite, pyrrhotite, py-rite, and chalcopyrite (Fulton, 1999). Accessible gold was dissolved by cyanidation of sulfide concentrate from a flotation circuit. Sulfide waste still contained 0.28 oz/ton of refractory gold.

  • gold pyrite froth flotation separation

    However, froth flotation uses a different property of gold to separate it from ore. Froth flotation is a method for separating hydrophobic materials (which will not mix with water) from hydrophilic materials (which readily mix with water). WO1993010904A1 Flotation separation of arsenopyrite from .

  • Pressure Oxidation of Arsenopyrite Concentrates at New

    New England Antimony Mines has operated the Hillgrove Gold Plant at Hillgrove in New South Wales since 1969, producing stibnite and arsenopyrite products by selective flotation. Gold is present in the ore as fine free gold, gold associated with stibnite and gold associated with arsenopyrite, with some ten to 20 per cent of the gold.

  • Refining Gold Processing E & MJ

    1) The gold is locked in refractory sulphide minerals such as pyrite, arsenopyrite or pyrrhotite and occurs in both the chemically bonded state and as micro or nano-size grains of metallic gold. 2) Or the gold is locked in silica. Other reasons for an ore not responding to conventional cyanidation include:

  • Gold with Pyrite, Pyrrhotite, Marcasite and Arsenopyrite

    Apr 17, 2016· Gold with Arsenopyrite Arsenic Minerals Gold is occasionally associated with arsenic minerals as well as pyrite, stibnite, chalcopyrite, etc. Direct cyanidation in these cases is seldom possible. Additionally, when gold is associated with readily soluble arsenic compounds, there is the hazard, in precipitation, of forming arsine, AsH3.

  • Design and Commissioning of a 40 Tonne per Day Flotation

    The Harbour Lights Mine situated at Leonora in Western Australia, mines a refractory sulphidic gold ore. The main sulphide minerals are pyrite and arsenopyrite. Due to the association of gold with the pyrite and arsenopyrite, gold recovery is not amenable to the normal cyanidation process. A pyrite/arsenopyrite flotation concentrate is produced at Harbour Lights.

  • 17 Flotation of Gold Ores

    Flotation of Gold Ores 17.1 INTRODUCTION The recovery of gold from gold-bearing ores depends largely on the nature of the deposit, the mineralogy of the ore and the distribution of gold in the ore. The methods used for the recovery of gold consist of the following unit operations: 1.

  • Effect of thio collectors and feed particle size

    Jul 18, 2013· The present paper provides information about the influence of particle size and synergism of collectors on the flotation of a very low grade auriferous sulphide ore. Mineralogical characterisation studies had shown that quartz made up 65% of the sample followed by pyrite (9%), arsenopyrite (7·3%) and minor quantities of other minerals.

  • Gold recovery from refractory gold concentrates by

    Gold was an important rare and precious metal, always coexists with sulphide minerals such as pyrite and arsenopyrite (Azizi et al., 2010; Nunan et al., 2017). Due to the depletion of high-grade gold ores with large-scale gold ore mining, the attention of gold production enterprises is switching towards

  • ALTA Gold 2012 E-Doc Albion Process

    Flotation test work was conducted on both samples and the optimum conditions presented in Table 2. For the low throughput Ore A flotation test work indicated that the majority of gold can be concentrated by concentrating the sulphide component in the ore to mass pulls of 9 to 10 wt%, with gold

  • THE SEPARATION OF PYRITE AND ARSENOPYRITE BY FLOTATION

    The aim of the research programme is to investigate the potential of flotation for the separation of arsenopyrite and pyrite minerals. The efficient separation of pyrite and arsenopyrite by a cheap process such as flotation has long been recognized as a desirable technological goal

  • BIOX Operations

    The tailings from the concentrator, containing 3 to 4 g/t gold and 34 g/t silver locked in arsenopyrite, was stockpiled. The mine has embarked on an expansion programme, involving the construction of a new 600 tonne per day concentrator and a 60 tonne per day BIOX ® plant for the treatment of stockpiled tailings, and later, run-of-mine ore.

  • Gold-Pyrite ores Danafloat

    Where the gold is intimately associated with various sulphide minerals, especially iron sulphides which include pyrite, arsenopyrite and pyrrhotite, flotation recovery of the gold is dependent on recovery of the associated minerals. In this case gold follows the associated sulphide mineral recovery.