cyanidation of gold ores containing antimony

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

     · 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.

  • 5 Methods of Gold-Silver Ore Extraction | Mining Pedia

     · 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;

  • (PDF) Determination of the Leaching Parameters for a ...

    Specific leaching strategies were developed to improve cyanidation of gold ores containing sulphide minerals such as pyrrhotite, chalcopyrite, pyrite and stibnite, and ultrafine flotation ...

  • (PDF) Cyanidation of Refractory Gold Ores: A Review

    In this paper, the effect of the oxidative pretreatment and lead nitrate addition on the cyanidation of Zarshuran refractory gold ore containing 3.32 ppm Au, 1.09% As, and 0.5% sulfur were ...

  • Gold Percolation Cyanidation

     · The cyanide solution slowly permeates the ore layer to dissolve the gold. The gold-containing solution (pregnant liquid) passes through a filter bottom (false bottom) slightly higher than the bottom of the tank, and flows out of the pipe on the wall of the tank. The tube is located between the bottom of the tank and the bottom of the filter.

  • 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 ...

  • Gold Agitation Cyanidation Leaching

     · Definition of Agitation Cyanidation Leaching. The agitation leaching method is to concentrate the slurry, obtained after grinding and classifying of the gold-containing ore, to a suitable concentration, place it in a leaching tank, add a cyanide solution, and aerate to carry out leaching. The main equipment used in the agitation leaching ...

  • Chloride as an Alternative to Cyanide

    of the cyanidation process at the turn of the last century, not least because it required the use of potentially hazardous and costly chlorine to oxidize/complex the gold. The PLATSOL ® process, originally designed to recover the platinum group metals (PGM''s) from their ores and concentrates, provides an alternative to cyanide for gold ores.

  • Evaluation of leaching parameters for a refractory gold ...

     · Gold ores containing stibnite are usually processed at a pH lower than 10 to avoid the dissolution of antimony that precipitates gold in solution. The use of pH 9.8 did not improve gold extraction, which was only 75.9%. The increase of lead nitrate reached an optimum gold extraction of 81.9% with 500 g/t. Download : Download full-size image ...

  • Rebellious Ores: Sulfides, Selenides and Tellurides

    Many sulfide minerals also contain things like copper or antimony that can react with the cyanide, preventing the cyanide from leaching out the gold and silver. For information on methods to deal with and extract gold, silver and base metals from these refractory ores, I …

  • (PDF) Improved gold and silver extraction from a ...

    Improved gold and silver extraction from a refractory antimony ore by pretreatment with alkaline sulphide leach. 2011. Haci Deveci. Oktay Celep. ibrahim alp. ... Alkaline sulfide pretreatment of an antimonial refractory Au-Ag ore for improved cyanidation. By Haci Deveci and ibrahim alp. 24-Alkaline sulphide pretreatment JOM.

  • Gold Mining Process Development – Denver Mineral Engineers

    The standard cyanide leach process consists of grinding the ore to about. 80% – 200 mesh, mixing the ore/water grinding slurry with about 2 pounds. per ton of sodium cyanide and enough quick lime to keep the pH of the solution. at about 11.0. At a slurry concentration of 50% solids, the slurry passes.

  • Cyanidation of gold ores c.pdf

     · 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 ...

  • Gold Extraction from Different Types of Ore

     · 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.

  • Treatment of Antimonial Gold Ores

     · 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 ...

  • Evaluation of leaching parameters for a refractory gold ...

    Evaluation of leaching parameters for a refractory gold ore containing aurostibite and antimony minerals: Part I – Central zone ... the kinetics of cyanidation of gold ores in the presence of ...

  • 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.

  • Selection on the Process for Removing and Recovering ...

     · Abstract. It is well known that the gold ores containing a high content of arsenic and antimony are very refractory. In this paper, the adverse effect of antimony on the extraction of gold by pretreatment-cyanide leaching was discussed in detail.

  • Determination of the leaching parameters for a refractory ...

     · 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

  • Summary of Gold Cyanidation

     · 1.Gold Cyanidation Principle. Gold Cyanidation is a method in which gold is extracted from gold-bearing ores using aqueous solution of cyanide as solvent, and then gold is extracted from gold-bearing leaching solution. It includes cyanide leaching process and deposition gold extraction process. First, gold in the gold-bearing ore reacts with cyanide to form a complex into the solution, …

  • How is Sodium Cyanide Consumed during Gold Cyanidation ...

     · The cyanidation plants has been using sodium cyanide to dissolve the gold from the ore in order to recover the gold from the leaching solution. The formula is as follows: 2Au+4NaCN+O2+2H2O→2Na [Au (CN)2]+2NaOH+H2O2. 2Au+4NaCN+H2O2→2Na [Au (CN)2]+2NaOH. From the electrochemical reaction, it can be known that dissolving 1 gram of gold ...

  • (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 …

  • (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.

  • CN103924102B

     · The invention relates to a method for removing antimony from refractory gold ore and preparing cubic crystal sodium pyroantimonate. The method comprises steps of leaching the antimony containing refractory gold ore in a mixed system of Na2S and NaOH, so as to dissolve the antimony into leaching agent in the form of sulfo-antimonous acid sodium, adding a precipitant into the antimony containing ...

  • Heap leaching of gold ore

    Heap leaching is an effective gold ore processing technology for low grade gold ores.Heap leaching is also one of the cyanide leaching methods.This method is mainly used to deal with oxidized ore, by-product ore or off-balance ore produced in the process of shaft opening up, which all contain low-grade gold, and also used to deal with gold-bearing tailings and gold-bearing cinders from non ...

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

    Abstract 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.

  • aurostibite leaching

    cyanidation of gold ores containing antimony. Evaluation of leaching parameters for a ... cyanidation of gold ores containing antimony. ... parameters for a refractory gold ore containing aurostibite and ... Inquire Now; Determination of the leaching parameters for a

  • Common Types of Non-cyanide Gold Recovery Chemicals

     · The characteristics of using thiosulfate as a gold recovery chemicals are: (1) non-toxic, (2) fast leaching speed, generally only takes 3 hours to achieve the best economic effect, (3) can process refractory gold ores containing copper, arsenic, antimony, selenium, etc. (4) the price of this non-cyanide gold recovery chemical is low and it has ...

  • Lime in Gold Ore Mining Process | Flotation, Cyanidation ...

     · In the cyanide production process, especially for ores containing more sulfide components, it is usually necessary to control the concentration of lime in the leaching operation. For the gold concentrate cyanide plant, the CaO concentration of the general control leaching process is between 2 and 5/10,000.

  • gold antimony processing

    PDF Cyanidation of gold ores containing copper, silver . The amount of arsenic, antimony, cadmium, bismuth and mercury elements decreased considerably as 88, 34, 22, 75 and 82% on the roasted sample 1000Inquire Now; Antimony Recovery from EndofLife Products and Industrial

  • The Ultimate Guide to Gold Cyanidation

    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.

  • Alkaline Oxidative Leaching of Gold-Bearing Arsenopyrite …

    hydroxide (Na0H) solution. Leaching of a high-grade arsenopyritic ore containing, in percent, 28.2 As, 25.3 Fe, 19.9 total S, and 1.0 Sb and, in troy ounces per short ton, 1.6 Au and 5.5 Ag resulted in >90 pct As extraction at 1000 C, 40 psig O 2,4 h, and 2M NaOH solution in a 2-L autoclave. Cyanidation

  • Antimony Recovery from End-of-Life Products and Industrial ...

     · Depending on the concentrations of gold and antimony, different categories of Au-Sb-containing sulfide ores can be distinguished: (1) ores in which gold is the main valuable component and antimony is a harmful impurity, (2) gold-bearing ores in which the amount of antimony is considerable and for which it is economically viable to recover ...

  • 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.

  • US4559209A

    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 …

  • 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.

  • ELECTROCHEMICAL GOLD EXTRACTION FROM THE …

    Most of gold-containing antimony ores are resistant to the common process of gold extraction-treatment with cyanide. One of the reasons of this resistance is a presence of finely-impregnated gold in sulfide mineral of arsenic and antimony. Further, antimonite sulfide destroys cyanide.

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

    Abstract. 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 ...

  • Arsenic and Antimony Sulphide Minerals in Cyanidation

     · 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.