chloride leaching of silver

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  • RECOVERY OF TIN AND COPPER BY RECYCLING OF PRINTED

    gold, silver, tin, and copper, among other metals, can chloride (73%) was separated by cooling the leached products down to room temperature. From Recovery of Tin and Copper by Recycling of Printed Circuit Boards from Obsolete Computers 651 Brazilian Journal of Chemical Engineering Vol. 26, No. 04, pp. 649 657, October December

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  • Leaching Gold and Silver Ores the Plattner and Kiss

    Concentrated pyrites containing gold and silver Roasting Leaching the silver Precipitation of silver Collecting the precipitate C. Roasting the precipitate Melting the silver Concentrations containing Roasting silver, but little or no gold Washing the D. E. F. ore silver, Concentrations rich in gold and and containing lead, amp;c. .

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  • Chloride leaching of lead researchgate

    Chloride leaching of lead and silver from refractory of silver in chloride leaching of zinc plant residue. At the first stage, the residue was leached with water to bring

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  • DETERMINING CHLORIDE AND SULFATE CONTENTS IN SOIL

    Silver nitrate Sodium chloride Sodium hydroxide, 1 N. 12. SOLUTIONS 12.1 Barium Chloride, 10% 12.1.1 In a 500 mL beaker, weigh 50 177; 0.5 g of barium chloride. 12.1.2 Add the deionized water to the barium chloride until reaching a total of 500 g of solution. 12.1.3 Add a stirring magnet to the beaker and stir on a magnetic stirrer.

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  • US9732398B2 Chloride process for the leaching of gold

    A process for the extraction of gold from a gold bearing ore or concentrate, comprising the steps of leaching the gold bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90176; C. and an Eh of at least 900 mV.

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  • A Kinetic Study That Compares the Leaching of Gold in the

    the leaching behavior of gold in the thiosulfate and chloride the kinetic data were extrapolated back to zero time (where systems is affected by the purity of the

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  • Chloride as an Alternative to Cyanide sgs

    leach solutions are also discussed. SGS MINERALS SERVICES. Chloride processes for gold extraction . have continued to attract some attention [2,3], although limited. Volatilization of gold chloride has been studied [4,5,6], robbing gold ores, and to silver ores,

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  • A Novel Technique for Silver Extraction from Silver

    A Novel Technique for Silver Extraction from Silver Sulphide Ore S. AYATA, H. YILDIRAN Ege University, Science Faculty, Chemistry Department, a novel method for silver extraction from silver sulphide ore is described. The leaching the proposed method describes a simple and very e ective leaching process for silver

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  • Copper and Silver Recovery from a Complex Sulfide

    A ferrous chloride oxygen leaching system was investigated by the federal Bureau of Mines as a means of recovering copper and silver from a sulfide concentrate that had been pretreated to remove a majority of the antimony.

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  • Silver Hydrometallurgy Recovery and Recycling Nova

    Method for leaching gold and/or silver out of ores or out of ore concentrates and also out of precious metal wastes or precious metal scrap by using cyanide containing leaching solutions, US 4971625 A.

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  • Recovery of silver from chloride leach solutions by iodide

    The federal Bureau of Mines investigated, on a laboratory scale, a technique for recovery of silver from pregnant solutions generated in the hydrometallurgical treatment of complex base metal sulfide concentrates with oxidizing chloride media.

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  • US4662938A Recovery of silver and gold Google Patents

    The leach solution is then cooled to precipitate the silver as silver chloride. The solid residue containing the gold is then leached with hypochlorous acid to dissolve the gold, and after separating the solids form the gold containing hypochlorous acid leach solution, the gold is precipitated by contacting the solution with sulfur dioxide.

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  • The solubility of silver chloride in ferric chloride

    The solubility of silver chloride in ferric chloride leaching media. Hydrometallurgy, 13 345 363. The solubility of silver chloride in various FeC13 FeCI~ HCI solutions has been measured over the temperature range 20 100176;C; the densities of the associated saturated

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  • FERRIC CHLORIDE OF THE DELTA SULFIDE

    proposed flowsheet, the ores are mated by single and two stage ferric chloride leaching to dissolve zinc, lead, copper and silver. The leach residue is eeated for gold recovery while the leach liquor will be directed to lead, copper, silver and zinc recovery steps.

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  • A Method for Leaching or Dissolving Gold from Ores or

    leaching step to produce a gold bearing solution as an intermediate product while based on the selective and fast dissolu tion of the precious metal. Therefore, A Method for Leaching or Dissolving Gold from Ores or Precious Metal Scrap Nicolas Geoffroy and Fran231;ois Cardarelli 4Au0 + 8 NaCN + 2H 2 O + O 2 4Na[Au(CN) 2] + 4NaOH (1) 4Au0

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  • The solubility of silver chloride in ferric chloride

    Accordingly, the addition of NaC1 to a ferric chloride leaching medium is a convenient means of increasing the solubility of silver chloride while simultaneously raising the solution boiling point, thereby allowing higher leaching temperatures.

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  • Precipitation of Silver Chloride Chemdemos

    Silver nitrate is a strong oxidizer, but the solution is fairly dilute. Wear goggles. Avoid getting silver nitrate solution on your skin. If your skin comes into contact with silver nitrate solution, immediately wash thoroughly with soap and water.

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  • Hypochlorite Leaching of Gold Ore Hydrochloric Acid

    HYPOCHLORITE LEACHING OF GOLD ORE 69 0. acid and 1 g/Lsodium chloride. 2 shows the effect of hydrochloric The dissolution of gold in dilute acid concentration on gold extraction from hypochlorite solution is very slow.

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  • Leaching of gold, silver and accompanying metals from

    16 % gold and 12 % silver into leach after 48 hours of leaching. The results for the same but the pretreated waste by milling have accelerated the process of thiosulfate leaching. Pretreatment enables to achieve for the ammonium thiosulphate leaching with ammonium 98 % gold and 93 % silver extraction after 48 hours of leaching (Fig. 2). 60 Fig. 2.

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  • Full text of quot;Leaching gold and silver ores The Plattner

    Full text of quot;Leaching gold and silver ores The Plattner and Kiss processes.A practical treatisequot; See other formats

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  • Refining of silver chloride to silver metal Finishing

    Rinse the silver chlorides well with water to remove any residual copper. Place the wet silver chloride sludge in a suitable container 1/3 silver chloride with about 2/3 free board. leave about 4 cm of water on top of the silver chloride.

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  • CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF

    Chloridehypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of FeS at [Fe] = 10 4 M, [S] = 10 M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.

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  • Gold Refining Forum V

    AgCl= Silver Chloride= White precipitate that forms when silver is exposed to chlorine in solution. Turns purple in light, darkens further in sunlight. Solid by product of using AR on lower karat jewelry. Hazardous to melt due to fumes. Production of silver chloride should be avoided if possible.

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  • Chloride leaching of lead researchgate

    Chloride leaching of lead and silver from refractory of silver in chloride leaching of zinc plant residue. At the first stage, the residue was leached with water to bring

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  • Chloride Leaching of Silver amp; Iodide Precipitation

    Silver iodide precipitation experiments were conducted on a pregnant solution obtained by ferrous chloride oxygen leaching of a copper silver bearing sulfide concentrate. The composition of the major elements contained in this chloride solution, which had a pH of 1.5, is shown in table 1.

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  • Silver chloride and ammonia Gold Refining Forum

    Sep 23, 20160183;32;Ammonium Hydroxide may be used alone to Disolve silver chloride if used in sufficient quantities to turn the solution basic. Ammonium Chloride needs the Prior addition of Sodium Hydroxide to turn the solution basic and oxidize the silver.

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  • sodium hypochlorite used in cyanide leaching of gold

    Jul 16, 20180183;32;At present leaching of gold containing raw materials by cyanide is the the Patera process including leaching of silver with sodium thiosulfate Another widely used oxidizing agent for gold/chloride system is hypochlorite.

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  • A Novel Technique for Silver Extraction from Silver

    A Novel Technique for Silver Extraction from Silver Sulphide Ore S. AYATA, H. YILDIRAN Ege University, Science Faculty, Chemistry Department, a novel method for silver extraction from silver sulphide ore is described. The leaching the proposed method describes a simple and very e ective leaching process for silver

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  • Recovery of Silver, Gold, and Lead From a Complex Sulfide

    A ferric chloride (FeCI3 ) preleach, at 40176; C in 6 h, extracted about 50 pct of the zinc and formed insoluble silver and lead chlorides. Subsequent acid thiourea leaching, for 1 to 3 h at 40176; C, extracted

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  • Copper and Silver Recovery from a Sulfide Concentrate by

    A ferrous chloride oxygen leaching system was investigated by the federal Bureau of Mines to determine its effectiveness for recovering copper and silver from a tetrahedrite concentrate that had been pretreated to remove a majority of the antimony.

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  • Copper Chloride Leaching Process Outotec

    Leaching and Solution Purification; Copper Chloride Leaching Process; Outotec174; Copper Chloride Leaching Process. Achieve sustainable and economical copper recovery from primary copper sulfides. Our copper chloride leaching process utilizes our highly effective atmospheric chloride leaching technology, including gold and silver recovery.

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  • Ferric Chloride Thiourea amp; Brine Leaching to Recover

    Without a pre FeCl3 leach, silver extraction with the NaCN solution was about 20 pct. Results of the FeCl3 leach tests are listed in table 2. Silver extraction increased from 61 to 76 pct with increasing FeCl3 concentration, and from 76 to 95 pct as the retention time was increased from 3 to 6 h at the highest FeCl3 concentration.

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  • (PDF) Chloride leaching of lead and silver from refractory

    For lead and silver extractions, the optimum conditions were a calcium chloride concentration of 400 g183;L185;, a pH value of 1.0, a leaching time of 1 h, and a temperature of 30176;C.

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  • Welcome to CDC stacks Recovery of silver, gold, and lead

    A ferric chloride (fecl3) preleach, at 40 deg c in 6 h, extracted about 50 pct of the zinc and formed insoluble silver and lead chlorides. Subsequent acid thiourea leaching, for 1 to 3 h at 40 deg c, extracted about 85 pct of the gold and silver.

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  • Chloride leaching of silver and lead from a solid residue

    Chloride leaching of silver and lead from a solid residue after atmospheric leaching 895 al., 2009) and silver (Almedia et al., 1995; Puvvada and Murthy, 2000) from various materials using for instance chloride leaching solutions.

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