Provided is a method of recovering gold, and optionally silver, from gold-bearing, and optionally silver-bearing, double refractory raw material, comprising the steps of (a) leaching the said gold-bearing, and optionally silver-bearing, double refractory raw material in a chloride containing leaching solution to dissolve gold and to obtain a leach solution comprising gold, and optionally ...

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Flotation behaviour of gold 901 16-( A Na2S'03 1 0 cmc 14-- a Na2SiO3/CMC 1:1 12-- -C 0 CM 11 N SIO~MC I, I io__ 8- - 6- 4-- 0 0 50 100 Ik 260 Reagent addition, W] Fig.8 Effect cif sodium silicate and CMC (carboxy methyl cellulose) on insol content in copper concentrate 18- 16 - . 7 2 14 0 Guar 13 CMC/par mixture 1: 1 12 10 8 6-7 4 2 osi 0 50 ...

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EP0451456B1 EP91101878A EP91101878A EP0451456B1 EP 0451456 B1 EP0451456 B1 EP 0451456B1 EP 91101878 A EP91101878 A EP 91101878A EP 91101878 A EP91101878 A EP 91101878A EP 0451456 B1 EP0451456 B1 EP 0451456B1 Authority EP European Patent Office Prior art keywords leaching strong acid concentrate zinc fed Prior art date Legal status (The legal …

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High sulfide gold ore refers to 20% -30% of gold wrapped by sulfide (mainly pyrite). It is better to use gravity separation, flotation, or flotation-cyanidation process. The following is an analysis of specific beneficiation tests, and introduces four commonly used gold processing methods for high-sulfide gold ores.

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method for processing pyritic concentrate containing gold copper; ghana small coal ash drying equipment; construction of rodmill crusher; henry hank alcott dry washer designer; cone crusher january 609; egypt marble mining process

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Process Introduction. The flotation method is a widely used technique for the recovery of gold from gold-containing copper ores, base metal ores, …

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Early Developments in Treating Pyritic and Refractory Gold Ores in Australia. Kenneth McQueen. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper. Early Developments in Treating Pyritic and Refractory Gold Ores in …

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Three of the processes introduced above have made great strides in solving these problems for the extraction of copper from chalcopyrite: The GEOCOAT™ Process - A heap leaching process that is capable of bioleaching copper concentrates. It does this by coating the concentrate slurry onto a support rock, or substrate material, and stacking this coated material in a bioxidation heap.

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The present invention relates to a method for bringing sulphidic concentrates which contain high percentages of arsenic and/or antimony and which also possibly contain bismuth in quantities which are likely to disturb subsequent processing stages, to a state in which copper and/or precious metals can be recovered from said concentrates by heating the concentrate in a fluidized bed, to ...

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method to concentrate copper pyrites. Explain the method of concentration of copper pyrites,Copper pyrite Cu 2 S is the ore of copper in the sulphide form so here method of frothfloatation should be used for concentration In this method the fine powder of ore and water are filled in a big vessel and pine or turpentine oil is added to it The sulphide particles of metals get wet and stick to it ...

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The solubility of gold in a water and cyanide solution was discovered in 1783 by Carl Wilhelm Scheele, but it was not until the late 19th century, that an industrial process was developed.The expansion of gold mining in the Rand of South Africa began to slow down in the 1880s, as the new deposits being found tended to be pyritic ore.The gold could not be extracted from this compound with any ...

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METHOD FOR PROCESSING PYRITIC CONCENTRATE CONTAINING GOLD, COPPER AND ARSENIC The invention relates to a method for processing pyritic copper sulphide concentrate, in which, in addition to copper, there is arsenic and gold bound to the sulphide minerals, or invisible gold. In the method concentrate is leached into... WO/2009/069781A1

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The method according to the invention is well suited e.g. for processing auriferous pyritic ores, and in some cases also for copper ores, such as copper pyrite or other metal-sulphide-containing ores having relatively high sulphur contents and a recoverable amount of precious metals.

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The two gold refining methods most commonly employed to derive pure gold are: the Miller process and the Wohlwill process. The Miller process uses gaseous chlorine to extract impurities when gold is at melting point; impurities separate into a layer on the surface of the molten purified gold.

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This article describes thermodynamic study of hydrometallurgical method for processing of copper arsenious gold-containing raw material. Chemical and phase composition of the material were researched. Calculations of the Gibbs energy change were conducted for possible reactions of the main minerals, present in the raw material, with nitric acid.

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The method of claim 1, wherein the ore, concentrate or tailings comprises a mixture of at least two compounds comprising metals selected from Gold, Silver, Copper, Zinc and Lead, and the heating step of claim 1 produces at least two of the Gold, Silver, Copper, Zinc and/or Lead—containing volatile complexes, and wherein the metals are ...

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Gold Smelting Kits Gold Prospecting Mining Equipment . First of all you must have gold or silver in your concentrates to begin with and the more of it the better The microwave gold smelting kiln is a tool for smelting only It does not separate out the precious metals that are in your concentrates You still need to have your end product called buttons assayed to determine its purity and content

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the technology necessary to process these difficult concentrates economically and responsibly. The CESL Process offers an attractive method for processing arsenic-bearing copper concentrates. CESL performed bench and pilot scale testing on four different arsenic challenged concentrates in 2010 with arsenic grades ranging from 0.7% to 4.6%.

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gold processing - gold processing - Refining: Gold extracted by amalgamation or cyanidation contains a variety of impurities, including zinc, copper, silver, and iron. Two methods are commonly employed for purification: the Miller process and the Wohlwill process. The Miller process is based on the fact that virtually all the impurities present in gold combine with gaseous chlorine more ...

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----- )0 EPA-650/2-74-085-0 CONTROL OF SULFUR DIOXIDE EMISSIONS FROM COPPER SMELTERS: VOLUME I - STEAM OXIDATION OF PYRITIC COPPER CONCENTRATES by C.A. Roann, H.T. Fullam, and P.P. Roberts Battelle Pacific Northwest Laboratories Battelle Boulevard, Richland, Washington 99352 Contract No. 68-02-0025 Program Element No. 1AB013 ROAP No. …

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An Overview of Treatment of Copper-gold Ores. Ersin Y. Yazici, Oktay Celep & Haci Deveci. Hydromet B&PM Research Group, Div. of Mineral&Coal P rocessing, Dept. of Mining En g., Karadeniz Technical ...

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A method of processing sulphide copper- and/or sulphide copper-zinc concentrates comprises flash smelting of said concentrates and basic silicate fluxes in the ... Inquire Now; Brevet WO2004092425A1 Method for processing . The objective is attained by means of the following: the hydrometallurgical method of sulfide minerals and concentrates ...

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The invention relates to a method for leaching bulk concentrate of chalcopyrite-type by means of an aqueous solution containing sulphuric acid and an oxygen feed at atmospheric pressure and at a temperature between 750C and the boiling point of the solution. It is typical of the method that the particle size of the concentrate to be fed into leaching is in the region of 80 % below 60 - 100 µm ...

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Provided is a method for processing a gold-bearing sulfide ore which involves maintaining the ore in a substantially oxygen free environment, preferably beginning with comminution of the ore and ending when a desired final concentrate, enriched in sulfide minerals, is obtained by flotation.

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Process Selection for Refractory Gold Ores and Concentrates: We seek two goals with this project: (1) to develop a practical methodology to categorize different refractory gold ores based on their mineralogy, and (2) to develop an effective and easy-to-follow procedure to determine the optimum method for gold recovery from a given gold ore and ...

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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 ...

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Gold prospecting methods that are proven ... gold may concentrate on the inside of the initial curve ... (also known as gold belts in Australia, Canada and Africa). Inquire Now; method for processing pyritic concentrate containing gold. method for processing pyritic concentrate containing gold. ...

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gold processing - gold processing - Mining and concentrating: The nature of the ore deposit determines the mining and mineral processing techniques applied. Oxide ore deposits are frequently of such low grade (e.g., 3 to 10 parts per million) that extensive mineral processing cannot economically be justified. In this case they are merely shattered by explosives and then piled into heaps for ...

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The concentrate can then be reground and refloated with the production of a high-grade copper concentrate together with a low- grade pyritic tailing suitable for return to the roughing circuit. This method is likely to be less costly than one involving the fine grinding of the whole ore.

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Feb 14, 2016 . We have many years copper oxide concentrate processing machines,, China Mining copper concentrate, copper concentrate ... Inquire Now; copper processing machines Feldspar Crusher. copper processing machines. ... The copper ore is mined copper ore, copper-containing high grade copper concentrate after beneficiation or copper ore

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