Application of Ion Exchange Resins in the Cyanidation of A Gold and Silver Ore.

by United States. Bureau of Mines.

Publisher: s.n in S.l

Written in English
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SeriesReport of investigations (United States. Bureau of Mines) -- 4374
ContributionsHussey, S.
ID Numbers
Open LibraryOL21748638M

The leaching liquor and the ion exchange resin are brought into contact with the gold-bearing ore to form a loaded resin which includes gold dissolved from the gold-bearing ore. After leaching, the . Ion-exchange reaction - Ion-exchange reaction - In industry and medicine: Ion exchange finds its major industrial application in the treatment of water. Hard water—caused by the presence of calcium and . Abstract: A process for recovering gold from thiosulfate leach solutions and slurries in which gold is loaded into an ion exchange resin. Gold is recovered from the resin by elution with polythionate ions and the resin is regenerated with sulfide or sulfite. Gold . Ion-exchange resin, any of a wide variety of organic compounds synthetically polymerized and containing positively or negatively charged sites that can attract an ion of opposite charge from a surrounding resins .

The extraction of gold from chloride solutions by ion exchange is examined. It is shown that at initial gold concentrations between ppm, 20 g/l Cl-and pH 5, the kinetics of loading on weak base resins are slightly slower than those observed with activated charcoal. Equilibrium loading of auric chloride varies considerably as a function of pH from one resin . A process for recovering gold from refractory auriferous iron containing sulphidic material which comprises treating an aqueous slurry of the material in a pressure oxidation step at a temperature in the range of from about ° to about ° C. under a total pressure of from about to about kPa to oxidize sulphide sulphur to sulphate form and release gold . These include precipitation, adsorption, solvent extraction, ion exchange and cementation. For example mercury may be selectively removed from solution by ion exchange resins (Staker, W. L. and Sandberg, R. G., "Selective Elution of Mercury, Silver and Gold from Strong-Base Anion Exchange Resins. CROSS REFERENCE TO RELATED APPLICATION. The present application is a division of U.S. patent application Ser. No. 13/,, filed Dec. 7, , now issued as U.S. Pat. No. 8,,, entitled “Co-Current and Counter Current Resin-in-Leach in Gold Leaching Process,” which claims the benefits of U.S. Provisional Application .

Application of Ion Exchange Resins in the Cyanidation of A Gold and Silver Ore. by United States. Bureau of Mines. Download PDF EPUB FB2

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Application of ion exchange resins in the cyanidation of a gold and silver ore. Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link) http Author: S. J.#N# (Stuart J.) Hussey. APPLICATION OF ION EXCHANGE RESINS IN GOLD HYDROMETALLURGY.


In hydrometallurgical applications, ion exchange resins have been used increasingly for the recovery and purification of metal pregnant solutions or for effluent treatment. This chapter devoted to an integrated evaluation of the present uses and future developments of the ion exchange resins Cited by: 2.

The ion exchange resin bed used for the treatment of the liquor contained l of Purolite A strong base ion exchange resin. The treatment was performed in batches of m 3 in 14 operating cycles. After adsorption of m 3 of liquor, the resin.

Ion-Exchange Resins. Cation-exchange resins such as AGW-X8 or Amberite have been tested by several investigators (Simpson et al., ; Nakahiro et al., ) for gold recovery from acidic thiourea solutions. However, the dissolution and loading of base-metal cations competes with gold for sites on the cation exchange resin.

The anion is so formed is eluted because it is repelled by the resin's anion exchange group R-SO3". Such a ligand exchange Recovery of gold with ion exchange resin reaction.

Ion exchange has traditionally been employed for water purification and the removal of metal contaminants from dilute waste streams. More recently, its use in removing trace metallic impurities. and greater efficiency with gold deposits associated with preg-robbing ores.

The thiosulphate leaching process, followed by resin-in-pulp gold extraction, has been developed by SGS to the point where it is a technically and economically viable alternative to cyanidation for some gold bearing ore.

The present study has demonstrated the possibility of using a strong anionic ion exchange resin to separate copper cyanide complexes from residual effluents of the gold extraction process.

The use of these resins. Application of ion-exchange resins to the recovery of gold is described. Significant developments around gold-selective anion-exchange resins and the commercialization of at least two of these products have made resin-in-pulp (RIP) available as an alternative to CIP for the upgrading of gold.

Ion exchange mechanism. Ion-exchange chromatography which is designed specifically for the separation of differently charged or ionizable compounds comprises from mobile.

NOTES OF PRACTICAL APPLICATION OF ION EXCHANGE RESINS IN URANIUM EXTRACTIVE METALLURGY species in the case of sorption of uranium from acidified gold cyanidation tails. METHODS OF LEACHING AND SORPTION There are two principle methods of ore processing: extraction of ore.

The main merits of cyanidation are the high selectivity of free cyanide for gold dissolution compared to other metals and an extremely high stability constant (2 × 10 38) of the gold cyanide complex []. Dilute sodium cyanide solutions within concentration ranges of –% are used in mines for gold leaching [].Gold ore.

Commentary Ion Exchange Ion Exchange Resins in the Gold Industry Virginia S.T. Ciminelli with carbonaceous matter and also very fibrous exchangers to the separation of The applications of ion exchange viscous due to the presence of clays.

gold and mercury present in residues (IX) resins in gold metallurgy will The uptake of gold and silver. The bioadsorbents for gold recovery can be easily prepared in a simple manner as schematically shown in Figure of feed materials of biomass are stirred in boiling concentrated sulfuric acid for.

Gold Mining Resin Filter For Cyanide Slurry. Gold Extraction Process Methods Summary Jxsc Machine. The ion exchange resin method is a method for adsorbing and recovering gold from a cyanide slurry by using an ion exchange resin, and is divided into two types of gold.

Cyanidation is still the most widely used method to leach gold, using sodium or calcium cyanide as lixiviant. An anionic gold-cyanide complex is formed that is extractable by basic resins.

Other metals present in the ore, such as silver. Ion exchange has been widely applied in technology of chemical separation of noble metal ions.

This is associated with dissemination of methods using various ion exchange resins. Fine powdered ore slurry containing native gold and silver is then passed by activated carbon or ion exchange resins and consequently lower gold recovery. chlorination, cyanidation, and.

This conventional cyanidation method is one of the more widely used methods in the gold cyanidation process. According to the different ores processed, it can be divided into: the whole mud cyanidation method for directly processing gold ore, and the concentrate cyanidation method for process gold.

Cyanide Chemistry | International Cyanide Management Code. The process of extracting gold from ore with cyanide is called cyanidation. The reaction, known as Elsner's Equation, is: 4 Au + 8 CN-+ O 2 + 2 H 2 O = 4 Au(CN) 2-+ 4 OH-Although the affinity of cyanide for gold is such that it is extracted preferentially, cyanide will also form complexes with other metals from the ore.

G-Rex-Resin Column The G-Rex is an efficient ion-exchange column reactor that specifically extracts gold away from other metal contaminants in cyanide leach solutions. A safe alternative to carbon. activated carbon or ion-exchange resins; (4) cyanide leaching and selectively recovering copper from solution; and (5) selectively leaching either copper or gold with alternative reagents.

The decision as to which of these approaches to apply depends upon the relative amounts of copper and gold. Cyanidation Mining. Today, most gold is mined by the cyanide leaching or cyanidation process. Use of anion exchange resins to sorb the gold from the pregnant solution has long been common practice in the gold.

Resin-in-leach (RIL) cyanidation experiments were performed on a refractory carbonaceous gold ore to determine if strong-base ion exchange resins could absorb the soluble aurocyanide complex in.

Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination is the most commonly used leaching process for gold extraction.

Production of reagents for mineral processing to recover gold, copper, zinc and silver. Application of the shrinking core model to the kinetics of extraction of gold I, silver I and / / nickel II cyanide complexes by novel anion / exchange resins Cyanidation of gold and silver. Gold Selective Ion Exchange Resins Silver behaves very similar to gold in this process.

The ore usually contains many other components, Table 1 – Typical composition of gold pregnant solution after ore cyanidation .(). Cyanide Recovery from Gold Extraction Process Waste Effluents by Ion Exchange I. Equilibrium and Kinetics.

Solvent Extraction and Ion Exchange: Vol. 24, No. 1, pp. Yongbin Yang's 66 research works with citations and 7, reads, including: A Review of the Comprehensive Recovery of Valuable Elements from Copper Smelting Open-Circuit Dust and Arsenic .