leaching of copper from tailings using ammonia

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leaching of copper from tailings using ammonia

Copper Ore Processing Plant,Equipment For Sale | Prominer ...

Aug 03, 2010· Abstract: The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied. The tailings belong to a low-grade and high-alkaline copper ore. The effect of leaching time, the concentration of ammonia, solid/liquid ratio and temperature were investigated.

Cyanide Gold Leaching with Copper Present ...

Thesis copper recycle from sulfide tailings using combined leaching of ammonia solution and alkaline bacteria -

AmmLeach A New Paradigm in Copper Cobalt Processing

The main important parameters in ammonia leaching of copper tailings have been prioritized as solid/liquid ratio, leaching time, temperature and the concentration of ammonia. The optimum leaching conditions are found to be: 4/1 liquid/solid ratio, 4h leaching time, 40°C, 3 mol/L NH4 +. More than 75% of copper was effectively recovered.

Industrial application of ammonia-assisted cyanide ...

Copper Leaching from Refractory Flotation Tailings Xu Bai 1,2, ... Leaching can be divided into two types, namely, acid leaching and ammonia leaching [7,8], named after the leaching agent employed. Acid and ammonia leaching are suitable for treating the copper ... tailings are extracted using concentrated sulfuric acid under high temperature ...

Leaching of copper from tailings using ammonia/ammonium ...

The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied. The tailings belong to a …

Leaching kinetics of copper flotation tailings in aqueous ...

leaching of copper from tailings using ammonia. Leaching of copper from tailings using ammonia/ammonium chloride solution and its dynamics The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied The tailings belong to a low grade and high alkaline copper ore

leaching of copper from tailings using ammonia ammonium ...

Oct 01, 1992· Minerals Engineering, Vol. 5, Nos 10-12, pp., 1992 /92 $5.00+0.00 Printed in Great Britain @ 1992 Pergamon Press Ltd USE OF THE AMMONIA CYANIDE LEACH SYSTEM FOR GOLD COPPER ORES WITH REFERENCE TO THE RETREATMENT OF THE TORCO TAILINGS M.C. COSTELLO, I.C. RITCHIE and D.J. LUNT Minproc Engineers Pty Ltd, PO Box 403, …

The selective leaching of copper from a gold–copper ...

Leaching of copper from tailings using ammonia/ammonium chloride solution and its dynamics The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied The tailings belong to a low grade and high alkaline copper ore

Leaching of copper from tailings using ammonia/ammonium ...

Ammonia leaching was first used for recovery of non-ferrous metals such as copper from oxide ores or ores containing pure copper, but gradually the use of this technology was developed from more ...

(PDF) Copper recycle from sulfide tailings using combined ...

ammonia in the industrial leaching plant is described. In the plant it was found that the extraction of copper was halved by the use of ammonia, thus leading to significant reductions in the amount of cyanide consumed in the full-scale leaching system. KEYWORDS Gold-copper ore treatment. Gedabek mine, Azerbaijan. Resin-in-pulp process

Gold dissolution and copper suppression during leaching of ...

Leaching of copper from tailings using ammonia/ammonium chloride solution and its dynamics The leaching of copper from the tailings of Baifang Copper Mine in Hunan province in China by aqueous ammonia/ammonium chloride solutions has been studied The tailings belong to a low grade and high alkaline copper ore

Ammonia Leaching: A New Approach of Copper Industry in ...

Thu Leaching Of Copper From Tailings Using Ammonia. Leaching of copper and inc from copper converter slag flotation tailings using H2SO4 and biologically generated Fe2SO43 Article in Hydrometallurgy May 2012 with 65 Reads. Get Price List Chat Online

Leaching kinetics of copper flotation tailings in aqueous ...

Thu Leaching Of Copper From Tailings Using Ammonia. Leaching of copper and inc from copper converter slag flotation tailings using H2SO4 and biologically generated Fe2SO43 Article in Hydrometallurgy May 2012 with 65 Reads. Get Price List Chat Online

the plant of copper leaching with ammonia

ores with ammonia–cyanide, and their plant control and operation has been published by Muir (2011). The application of cyanide–ammonia system to leach gold over copper from oxidised ores has been tested successfully using different gold–copper ores (Drok and Ritchie, 1997; La Brooy et al., 1991; Muir et al., 1989). However, this system in the

leaching of copper from tailings using ammonia

Mar 01, 2016· As a comparison, two preliminary experiments were conducted to leach gold from the copper–gold concentrate using solutions containing an initial 0.8 g/L NaCN and pulp density of 28.5% in the presence of 3 g/L NaOH (pH 12.6) and in its absence (pH 10.9, with lime as pH modifier).

Thesis copper recycle from sulfide tailings using combined ...

Leaching process for copper ore includes acid leaching and ammonia leaching. Leaching process is mainly for oxide copper that is very difficult to be extracted by flotation. Also for some copper ore it is combined by both oxide copper ore and sulfide copper ore, after processing test combined processing technologies can also be adopted to ...

Experimental research in leaching of copper-bearing ...

Sep 01, 2018· The use of ammonia to reduce the consumption of cyanide during the leaching of gold from copper-bearing ores was patented in 1902 by Hunt (1902), during the first period of intense R&D activity in gold metallurgy that followed the invention of the cyanide process by J.S. MacArthur and the Forrest brothers in the late 1880s. The ammonia-cyanide ...

A Novel Technology for Separating Copper, Lead and Zinc in ...

Mar 01, 2008· The University of South China has carried out some experimental research on recovering copper tailings. Wu Heng-shan and some other investigators have made leaching experiments of copper tailings by using acid and ammonia separately and shown the feasibility of secondary recovery of copper tail-ings[2].

(PDF) Ammonia Leaching: A New Approach of Copper Industry ...

Leaching process for copper ore includes acid leaching and ammonia leaching. Leaching process is mainly for oxide copper that is very difficult to be extracted by flotation. Also for some copper ore it is combined by both oxide copper ore and sulfide copper ore, after processing test combined processing technologies can also be adopted to ...

An Investigation of the Selective Leaching of Gold Over ...

Me too was currently in a study how to maximize the recovery of gold in a gold-copper ore and tailing. I tested already using sulfuric acid leaching, ammonia bicarbonate leaching and ammonia sulfate leaching. Base from my own observation ammonia bicarbonate is good for a oxide ore or tailing and ammonium sulfate for sulfide one.

Thu Leaching Of Copper From Tailings Using Ammonia

Problems created by CN‐soluble copper in leach solution Copper contamination of gold cyanidation circuits causes a number of problems in gold processing (Sceresini, 1999). Copper oxide minerals (i.e. azurite, malachite, cuprite, tenorite) have fast leaching rates in cyanide.

Industrial Application of Ammonia Assisted Cyanide ...

Mar 01, 2008· The University of South China has carried out some experimental research on recovering copper tailings. Wu Heng-shan and some other investigators have made leaching experiments of copper tailings by using acid and ammonia separately and shown the feasibility of secondary recovery of copper tail-ings[2].

Cyanide Gold Leaching with Copper Present ...

Response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. The proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. At present, few studies have examined the leaching of chrysocolla. In this study, we examine the effects of several variables, including the amount of concentrated sulfuric acid, leaching temperature ...

Copper Ore Processing Plant,Equipment For Sale | Prominer ...

insoluble. There have been a number of studies into the application of the copper/ammonia/ cyanide process for the treatment of copper-containing ores (6, 7). It has been shown that the addition of ammonia to the cyanide solution results in a lower cyanide consumption and an increased selectivity of gold leaching over copper.

leaching of copper from tailings using ammonia

Jul 10, 2018· Ammonia leaching from copper sulfide tailings. A 30-days ammonia leaching experiments of sulfide tailings with different concentration of ammonia was carried out in a sterile environment. Changes in the key parameters (i.e., pH and Cu extraction rate) ...