water in gold flotation

water in gold flotation

  • Flotation of Gold and GoldBearing Ores ScienceDirect

    The application of flotation on a reasonable scale within the goldmining industry commenced in the early 1930s following the introduction of watersoluble flotation collectors (specifically xanthates and dithiophosphate collectors) that allowed differential flotation of sulfide minerals (Weinig and Carpenter, 1937, Rabone, 1939, Richards and Locke, 1940, Taggart, 1945)The application of flotation on a reasonable scale within the goldmining industry commenced in the early 1930s following the introduction of watersoluble flotation collectors (specifically xanthates and dithiophosphate collectors) that allowed differential flotation of sulfide minerals (Weinig and Carpenter, 1937; Rabone, 1939; Richards and Locke, 1940; Taggart, 1945)Flotation of gold and goldbearing ores ScienceDirect

  • The effect of sea water on copper and gold flotation

    Whilst in tap water the presence of bentonite was detrimental to copper and gold flotation, sea water reduced the negative effect of bentonite on copper and gold flotation As shown in Fig 3 , copper and gold recoveries were increased from 74% and 72% when the orebentonite mixture was floated in tap water to 81% and 75% when the same mixture was floated in sea water, respectivelyIt was describe by the use of 600 series of flotation reagents which were developed primarily for the purpose of depressing carbonaceous and siliceous slimes in the flotation of’ gold ores Carbonaceous material not only greatly increases the bulk and moisture content of a flotation concentrate, but its presence makes cyanidation of the concentrate difficult or impossible owing to reprecipitation of the goldGold Flotation Mineral Processing & Metallurgy

  • Water quality effects on flotation: Impacts and control

    The quality of the water plays an important role in determining the performance of the flotation process This has led to significant amount of research initiatives dealing with the impact of water reuse and water quality on flotation Summaries of the findings have been published by Rao and Finch, 1989, Johnson, 2003, Liu et al, 2013 There is now a strong push for this aspect to be included inA total recovery of more than 97% of the gold and silver is made by flotation, while the combined flotationcyanidation process gives an overall extractionSilver Gold Recovery Flotation Process

  • Flotation Reagents Mineral Processing & Metallurgy

    Alone or in the combination with reagent 301 is widely used for flotation of gold and silver Aerofloat 211: A water soluble dry aerofloat Formerly sodium aerofloat B 5Water represents 80–85% of the volume of mineral pulp processed in flotation circuits Imperatives for a more detailed focus on circuit water quality and its control have come from increasing requirements to use relatively impure primary water supplies (eg high salinity, treated sewage) and high proportions of recycle fromThe impact of water quality on flotation performance

  • 1 Froth Flotation – Fundamental Principles

    The basis of froth flotation is the difference in wettabilities of different minerals Particles range from those that are easily wettable by water (hydrophilic) to those that are waterrepellent (hydrophobic) If a mixture of hydrophobic and hydrophilic particles are suspended in water, and air is bubbled through the suspension, then the hydrophobic particles will tend to attach to the air bubbles and float to the surface, as shown in Figure 3 The froth layer that forms on the surface will then be heavily loaded with they hydrophobicFlotation of coal using sea water The reason that sea water has been applied for coal flotation is mainly because in 1920 some coals were reported to be readily floated in sea water without the addition of reagents (collector and frother) In 1930’s, the flotation of coal using sea water was further investigated by Russian researchers [8]Applying High Salinity Water in FlotationA Review

  • Fine Flotation Tailings Dewatering: Reducing Water

    Fine Flotation Tailings Dewatering: Reducing Water Consumption in a Gravity Gold Recovery Circuit Cameron Stockman CEC Mining Systems, Canada ABSTRACT Due to a necessary change in particle size to improve Aurecovery in the gravity and flotation circuit of an 800 tons per day mill in the State of Sonora, Mexico, the Owner was required toFroth flotation works by exploiting the hydrophobic properties of gold molecules First, ore is ground into an extremely fine powder The powdered ore is mixed with water to create a slurry, which is mixed with surfactants to increase the gold’s hydrophobicity This mixture is placed into a large tank filled with distilled waterRecovering Gold through the Froth Flotation

  • Coarse gold reCovery using flotation in a fluidized bed

    fact that some forms of gold such as free gold do not break apart during conventional grinding, coarse gold can accumulate in the circulating load, and eventually be lost eriez has developed a flotation cell that uses fluidized water to enhance flotation of coarse particles More than 53Copper & Gold Inc iii 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 study In 2011, approximately 13 million metricEstimated Water Requirements for the Conventional

  • The impact of water quality on flotation performance

    Water represents 80–85% of the volume of mineral pulp processed in flotation circuits Imperatives for a more detailed focus on circuit water quality and its control have come from increasing requirements to use relatively impure primary water supplies (eg high salinity, treated sewage) and high proportions of recycle fromFlotation of coal using sea water The reason that sea water has been applied for coal flotation is mainly because in 1920 some coals were reported to be readily floated in sea water without the addition of reagents (collector and frother) In 1930’s, the flotation of coal using sea water was further investigated by Russian researchers [8]Applying High Salinity Water in FlotationA Review

  • The use of seawater as process water in concentrating

    beginning, flotation was developed to beneficiate ores containing copper sulfides, lead and zinc Today flotation is applied for a wide range of ores such as gold, platinum, nickel in addition with oxides, oxidized minerals and nonmetallic ores (Wills 2006, 267)The flotation of the following metals was reviewed: copper, zinc, nickel, lead, iron, chromium, arsenic, gold, and others The bubble generation method could be applied for typical dispersedair flotation column, electroflotation, or dissolvedair flotation; the latter being the most appropriate established technique in waterProcesses | Free FullText | Flotation in Water and

  • Kinetics Studies on Effect of Recycled Water on

    Improved flotation kinetics in first recycling of Melbourne and deionised waters were observed Three recycles of mine water in the flotation process indicated a steady‐state rate for copper tailings This was not valid for Melbourne and deionised waters where flotation was inhibited successively by three waterThe analytical reagent dithiopyrilmethane (DTM) is investigated in combination with potassium butyl xanthate (PBX) in gold recovery from lowsulphide arsenical gold ore Thanks to two heterocycling rings in the structure, DTM attaches to nonferrous and noble metals Adsorption of DTM at arsenopyrite and gold is determined using the electron and laser microscopy, as well as by IR and IVFlotation and Adsorption Capacities of

  • Fine Flotation Tailings Dewatering: Reducing Water

    Fine Flotation Tailings Dewatering: Reducing Water Consumption in a Gravity Gold Recovery Circuit Cameron Stockman CEC Mining Systems, Canada ABSTRACT Due to a necessary change in particle size to improve Aurecovery in the gravity and flotation circuit of an 800 tons per day mill in the State of Sonora, Mexico, the Owner was required torelative SG of gold, and the fact that some forms of gold such as free gold do not break apart during conventional grinding, coarse gold can accumulate in the circulating load, and eventually be lost Eriez has developed a flotation cell that uses fluidized water to enhance flotation of coarse particlesCOARSE GOLD RECOVERY USING FLOTATION IN A

  • Recovering Gold through the Froth Flotation Process

    Froth flotation works by exploiting the hydrophobic properties of gold molecules First, ore is ground into an extremely fine powder The powdered ore is mixed with water to create a slurry, which is mixed with surfactants to increase the gold’s hydrophobicity This mixture is placed into a large tank filled with distilled waterCopper & Gold Inc iii 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 study In 2011, approximately 13 million metricEstimated Water Requirements for the Conventional

  • The impact of water quality on flotation performance

    Water represents 80–85% of the volume of mineral pulp processed in flotation circuits Imperatives for a more detailed focus on circuit water quality and its control have come from increasing requirements to use relatively impure primary water supplies (eg high salinity, treated sewage) and high proportions of recycle fromFlotation of coal using sea water The reason that sea water has been applied for coal flotation is mainly because in 1920 some coals were reported to be readily floated in sea water without the addition of reagents (collector and frother) In 1930’s, the flotation of coal using sea water was further investigated by Russian researchers [8]Applying High Salinity Water in FlotationA Review

  • Separation efficiency improvement of a low grade copper

    water recovery If additional water is added to dilute the contents of the flotation cell, and the flow rate of water to the concentrate remains the same, the water recovery will be reduced The downside of diluting flotation banks is the resulting loss of residence time which can have a negative effect on valuable mineral recoverybeginning, flotation was developed to beneficiate ores containing copper sulfides, lead and zinc Today flotation is applied for a wide range of ores such as gold, platinum, nickel in addition with oxides, oxidized minerals and nonmetallic ores (Wills 2006, 267)The use of seawater as process water in concentrating

  • What Are Commonly Used Gold Recovery Chemicals?

    In summary, in gold flotation process, the commonly used gold recovery chemicals are collectors (kerosene, diesel, fatty acids and their sodium soaps, alkyl sulfonates, alkyl sulfates, phosphates, arsenates), foaming agents (eucalyptus oil, camphor oil, cresol acid, higher alcohols and No 2 flotation oil), and conditioning agents (lime, waterImproved flotation kinetics in first recycling of Melbourne and deionised waters were observed Three recycles of mine water in the flotation process indicated a steady‐state rate for copper tailings This was not valid for Melbourne and deionised waters where flotation was inhibited successively by three waterKinetics Studies on Effect of Recycled Water on

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