cyanidation of gold ores containing antimony

cyanidation of gold ores containing antimony

(PDF) Cyanidation of gold ores containing copper, silver ...

Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony. Download. ... Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach. By Haci Deveci and ibrahim alp. Implementation of sodium hydroxide pretreatment for refractory antimonial gold and silver ores.

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Cyanidation of gold ores containing copper, silver, lead ...

Jul 01, 2010  Cyanidation tests on two ore samples from two different gold deposits are reported. The first sample contained 10.5. ppm gold with high arsenic and antimony.. The second sample had a low gold content (2.5 ppm) but a high silver content (160 ppm).The first series of test work focused on the determination of conditions for extracting gold from the samples ground to − 75 μm.

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Cyanidation of gold ores containing copper, silver, lead ...

Cyanidation tests on two ore samples from two different gold deposits are reported. The first sample contained 10.5. ppm gold with high arsenic and antimony.. The second sample had a low gold content (2.5 ppm) but a high silver content (160 ppm).The first series of test work focused on the determination of conditions for extracting gold from the samples ground to − 75 μm.

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International Journal of Mineral Processing

Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony P. Karimia,⁎, H. Abdollahia, A. Aminib, M. Noaparasta, S.Z. Shafaeia, F. Habashic a ...

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Arsenic and Antimony Sulphide Minerals in Cyanidation

Sep 17, 2014  The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible.Extractions are low and the solutions soon become ‘foul.’ The gold in such ores could be free and uncoated, and no trouble in dissolving it in clean cyanide solutions would be expected.

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Treatment of Antimonial Gold Ores - ScienceDirect

Jan 01, 2016  The rate of oxidation of stibnite is strongly dependent on pH with appreciable dissolution at pH 12, reducing to low levels at pH 10. Figure 52.1 shows Hedley and Tabachnick's (1958) results of the cyanidation of a synthetic ore containing 0.25% stibnite at pH values of 10, 11, and 12. At higher pH values, higher levels of antimony pentoxide have been observed on gold surfaces, which then ...

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Advances in the Cyanidation of Gold - ScienceDirect

Jan 01, 2016  Cyanidation, a process used for over a century to extract gold from free milling ores, is so effective that it can economically treat low-grade ores (0.5 g/t Au). The concentration of cyanide added to dissolve gold is much higher than the stoichiometric requirement because of various interferences. The occurrence and composition of the gold and ...

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Gold Cyanidation Process - 911 Metallurgist

Jun 08, 2016  The gold cyanidation process is the most important method ever developed for extracting gold from its ores. The reasons the widespread acceptance of cyanidation are economic as well as metallurgical. It usually obtains a higher recovery of gold than plate amalgamation and is easier to operate than the chlorine or bromine process.

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A fundamental study of the alkaline sulfide leaching of gold

sulfur containing streams are difficult to treat using cyanidation. In the present paper, the alkaline sulfide system was studied as an alternative to cyanide for recovering gold from elemental sulfur. It was found that the dominant lixiviant for gold in this system is

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Bio-oxidation of refractory gold ores containing stibnite ...

Aug 01, 2019  Arsenic and antimony are environmental pollutants associated with several diseases, including skin cancer. One of the main sources of both elements is the oxidation of sulphide minerals, particularly arsenopyrite and therefore any of both elements is a concern in gold mining operations because arsenic- and antimony-bearing sulphides may contain significant gold contents.

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5 Methods of Gold-Silver Ore Extraction Mining Pedia

Oct 16, 2020  The sulphur antimony copper silver ore and argentojarosite cannot be extracted by cyanidation. When formulating a cyanidation system for silver-containing ore, the following measures should be taken: 1) Leach with concentrated cyanide solution (0.2~0.6% NaCN); 2) Long time (up to 2 to 3 days) leaching; 3) Inflate strongly into the pulp;

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Gold Cyanidation Heap Leaching - cnlitereagent

Oct 12, 2019  The ore doesn’t contain carbonaceous material capable of adsorbing gold cyanide complex; 6. Does not contain a large number of compounds that can react with cyanide solution, such as partially oxidized antimony sulfide, zinc sulfide, iron sulfide, copper sulfide and arsenic-containing

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Bio-oxidation of refractory gold ores containing stibnite ...

Aug 01, 2019  Arsenic and antimony are environmental pollutants associated with several diseases, including skin cancer. One of the main sources of both elements is the oxidation of sulphide minerals, particularly arsenopyrite and therefore any of both elements is a concern in gold mining operations because arsenic- and antimony-bearing sulphides may contain significant gold contents.

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The Ultimate Guide to Gold Cyanidation

Nov 21, 2018  The tube is located between the bottom of the tank and the bottom of the filter. After the alluvial ore is treated with the cyanide solution, it is washed with water to wash out the gold-containing solution remaining in the ore. The gold-containing solution flowing out of the tank is sent to a displacement precipitating device to precipitate gold.

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US4559209A - Leaching refractory gold ores - Google Patents

A method is disclosed for leaching a gold ore which is refractory due to the presence of sulphide minerals of arsenic and antimony. The ground ore is leached with cyanide in a pipe reactor at a pressure of between 5 and 8 MPa. The terminal pH value of

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processing gold in antimony ores

Processing of Gold Containing Antimony Ores. Processing of Gold Containing Antimony Ores. #G-723. solution of the research studies on the project is a development of environmentally safe technology of complex processing of the stibium ore in order to extract from there a commercially valuable product. Treatment of Antimonial Gold Ores ScienceDirect

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A fundamental study of the alkaline sulfide leaching of gold

sulfur containing streams are difficult to treat using cyanidation. In the present paper, the alkaline sulfide system was studied as an alternative to cyanide for recovering gold from elemental sulfur. It was found that the dominant lixiviant for gold in this system is

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Arsenic Pyrite Gold Extraction by Alkaline Leaching Oxidation

Jul 22, 2017  Gold mining uncovers more and more hydrothermal deposits in which gold mineralization is associated with sulfides and other compounds of base metals, arsenic, antimony, or tellurium. This type of mineralization frequently makes gold recovery difficult by conventional techniques, such as amalgamation, gravity separation, or direct cyanidation.

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L D Michaud, Author at Mineral Processing Metallurgy ...

The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible. Extractions are low and the solutions soon become ‘foul.’ The gold in such ores could be free and uncoated, and no trouble in dissolving it in clean ...

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(PDF) The Application of Roasting Pretreatment for ...

Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach. ... Improvement of Cyanidation of Antimonial Refractory Gold/Silver Ores by Ultrafine Grinding in a Stirred Mill. By ibrahim alp. 24-Alkaline sulphide pretreatment JOM. By ibrahim alp.

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Determination of the leaching parameters for a refractory ...

May 01, 2009  Reducing the cyanide concentration to 250 ppm resulted in a gold extraction of 89.5% with a cyanide consumption of 2.6 kg/t. Following a successful investigation on the Central Zone sample, a cyanidation study was conducted on an ore sample from the AD-MW Zone of Clarence Stream

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Implementation of sodium hydroxide pretreatment for ...

Implementation of sodium hydroxide pretreatment for refractory antimonial gold and silver ores. ... Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach. By Haci Deveci and ibrahim alp. Alkaline sulfide pretreatment of an antimonial refractory Au-Ag ore for improved cyanidation. By Haci ...

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US3174848A - Process for treating high antimonybearing ...

US3174848A US276223A US27622363A US3174848A US 3174848 A US3174848 A US 3174848A US 276223 A US276223 A US 276223A US 27622363 A US27622363 A US 27622363A US 3174848 A US3174848 A US 3174848A Authority US United States Prior art keywords charge gold roast stages salt Prior art date 1963-04-29 Legal status (The legal status is an assumption and is not a legal conclusion.

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Cyanidation of gold ores c.pdf - Free Download PDF Ebook

Jun 15, 2018  Download Cyanidation of gold ores c.pdf... International Journal of Mineral Processing 95 (2010) 68–77Contents lists available at ScienceDirect International Journal of Mineral Processing j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / i j m i n p r o Cyanidation of gold ores containing copper, silver, lead, arsenic and antimony P. Karimi a,⁎, H. Abdollahi a, A ...

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cyanidationof orecontaining oro antimonio

Arsenic and Antimony Sulphide Minerals in Cyanidation. CachedMay 12, 2017 The effects of lead nitrate on the cyanidation of synthetic gold ore containing orpiment at pH 10, were investigated. 0.3 lb. of lead nitrate per ton failed to increase extraction; the solutions still contained soluble sulphides.

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(PDF) Effect of Lead Nitrate on Cyanidation of Antimonial ...

Mineral Processing B21 EFFECT OF LEAD NITRATE ON CYANIDATION OF ANTIMONIAL REFRACTORY GOLD AND SILVER ORES MSc.Oktay CELEP Assoc. Prof. Dr. brahim ALP Assoc. Prof. Dr. Hacı DEVEC Department of Mining Engineering, Karadeniz Technical University, Turkey ABSTRACT This paper deals with the effect of the addition of lead nitrate and ultra-fine grinding on the cyanidation

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The Ultimate Guide to Gold Cyanidation

Nov 21, 2018  The tube is located between the bottom of the tank and the bottom of the filter. After the alluvial ore is treated with the cyanide solution, it is washed with water to wash out the gold-containing solution remaining in the ore. The gold-containing solution flowing out of the tank is sent to a displacement precipitating device to precipitate gold.

More

Gold Cyanidation Heap Leaching - cnlitereagent

Oct 12, 2019  The ore doesn’t contain carbonaceous material capable of adsorbing gold cyanide complex; 6. Does not contain a large number of compounds that can react with cyanide solution, such as partially oxidized antimony sulfide, zinc sulfide, iron sulfide, copper sulfide and arsenic-containing

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Establishing thE ProcEss MinEralogy of gold orEs

be recovered by whole-ore cyanidation, or some combination of flotation and cyanidation. Acceptable extraction of refractory gold can only be achieved by employing a pre-oxidation process prior to cyanide leaching. Antimony, bismuth sulfide and telluride gold ores: Antimony, bismuth sulfide and telluride gold ores are often somewhat

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Leaching and recovery of gold from ore in cyanide-free ...

In this paper, the authors Pelin Altinkaya, Zulin Wang, Ivan Korolev, Joseph Hamuyuni, Mika Haapalainen, Eero Kolehmainen, Kirsi Yliniemi and Mari Lundström investigate agitated reactor leaching and followed by recovery of gold from mildly refractory ore in cyanide-free glycine media.

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Gold Extraction from Different Types of Ore

Jan 10, 2020  Telluride gold ores generally refer to ores containing natural gold and sulfide minerals, which have high economic value. Gold extraction from this type of ore can be different, because whether this ore contains silver or not, it dissolves very slowly in cyanide solutions, so a pre-oxidation stage is usually added before cyanidation. 11.

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CNFREE Gold Leaching Reagent compared to Cyanide in Gold ...

May 08, 2019  For leaching different kind of gold ore, the leaching effect of the cyanide and cnfree gold leaching reagen is also different. To Wrap Up. Nowadays, more than 80% gold mines in the world use cyanide gold extraction process, while 85% of them use sodium cyanide to extract gold.

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(PDF) Process flow-sheet for gold and antimony recovery ...

Only tory gold ores in a continuous plant from the batch data, in: D.S. Holmes, R.W. Smith ŽEds.., Mineral Bioprocessing vol. 30% Au extraction was attained after cyanidation of 21995, pp. 17–39. the un-pretreated ore whereas about 80% Au recov- w8x T. Havlik, M. Skrobian, P. Balaz, A study of stibnite acid ery was realised by cyanidation ...

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Procedure for processing sulphide gold containing arsenic ...

Method for processing sulfide gold-arsenic-antimony concentrates or ores, comprising preparing a mixture of arsenic-antimony concentrates or ores with halide, big mixture with gaseous compounds and their condensation and getting gold candle and leaching of gold, characterized in that the mixture prepared from the concentrate or ore and chloride ...

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What Are the Methods for Gold Processing?

Jan 20, 2020  The ore is required to contain no elements harmful to cyanidation such as copper, arsenic or antimony. 6. Flotation-Cyanidation Combined Method. This gold processing method is applicable to the gold-bearing pyrite quartz vein ore which is closely related to the symbiotic relationship between gold and sulfide.

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Determination of the leaching parameters for a refractory ...

May 01, 2009  Reducing the cyanide concentration to 250 ppm resulted in a gold extraction of 89.5% with a cyanide consumption of 2.6 kg/t. Following a successful investigation on the Central Zone sample, a cyanidation study was conducted on an ore sample from the AD-MW Zone of Clarence Stream

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Emerging technologies in cyanidation of gold and silver: a ...

Gold extraction and cyanide consumption were 95% and 7.4 kg/t. The Kupol mill was the first commercial application of the CELP. The plant processed a high grade free milling gold/silver ore containing 28.2 g/t Au, 324.8 g/t Ag and approximately 0.5% pyrite during 2008 operation.

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