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Calculating Cyanide Consumption

Calculating Cyanide Consumption

of dissolution and/or during the of ores containing sulphide minerals was reported Weichselbaum et al., 1989 Dufresne et al., 1994 Deschenes and Wallingford, 1995. Deschenes et al. 2002 indicated that lead nitrate addition increases kinetics by reducing the detrimental effect of metallic

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  • US20060185475A1 - Reducing cyanide consumption in gold

    It is this sulphide surface which reacts with during for extraction to form thiocyanates and other thio species. This results in the high 

  • A Kinetic and Thermodynamic Modeling Approach

    rate by 20%. There have also been many experimental investigations of the effects of varying solution chemistry and ore mineralogy on [8]. On the other hand, there have been rather fewer efforts to develop models for estimating under real conditions

  • PDF Predicting Cyanide Consumption in Gold Leaching: A

    The of during processing operations is a major economic cost in the extraction of from its ores, while the discharge of wastes may result in significant

  • Industrial Application of Ammonia Assisted Cyanide Leaching

    significant reductions in the amount of in the full-scale system. KEYWORDS. -copper ore treatment. Gedabek mine, Azerbaijan


    Another proposed procedure to reduce lime is closed tank where a reduced pH or the natural. pH of the ore is used and hydrogen  

  • modeling the cyanide heap leaching of cupriferous gold ores

    during Gasparrini, 1983. Pyrite, which is the most common iron sulfide mineral associated with , fortunately seldom 

  • Cyanide Consumers in Gold Leaching Process

    Hello All, I work in a CIL plant, processing oxide ore with more and more intrusion of sulphides fresh ore body. The plant is designed for oxide ore but we noticed that at a certain blending, the transitional ore could be processed. It impacted on the recovery going from 83-84% for pure oxid

  • Optimizing and evaluating the operational factors

    Kondos et al. [ 37] have concluded that using [ 37 ]. The excess cyanide will consume more cyanide because of the formation of cyanocomplexes from impurities

  • Global Sodium Cyanide Market Analysis

    The mining industry has historically used sodium for extraction since the latter half of the 19th century, and remains the largest of the end users of the sodium market. About 75% of global sodium is used in the mining industry, and about 90% of sodium in North America is used in mining


    for an innovative, new process a non-toxic reagent - Elimination of use in the recovery and production process - Smelting and forming into bars - Additionally, this process design also intended to demonstrate how a small mobile plant could operate in the field, “to unlock small/high grade stranded

  • The process design of gold leaching and carbon-in-pulp

    takes place in a series of agitated reactors or pachucas. Before the pH of the pulp is normally adjusted to a value of around 9.5–11 to ensure minimum loss of as hydrogen . The of can be conveniently represented by the Elsener equation: [1] Although air agitated tanks were commonly used in

  • Leaching of gold and copper minerals in cyanide deficient

    Nov 21, 2020 — ... Since mainly depends on the cyanicide mainly pyrite and chalcopyrite content in ores Equations 3 and 4, 

  • Low pH cyanidation of gold - ScienceDirect

    Another proposed procedure to reduce lime is closed tank where a reduced pH or the natural pH of the ore is used and hydrogen  

  • Effect of oxygen and lead nitrate on the cyanidation of a

    extraction of 96% can be obtained with of 0.51 kg/t and lime of 0.60 kg/t in 24 hours. A four hour pre- followed by

  • Analysis of Factors Affecting Heap Leaching Process of

     · With the low concentration of solution for , the solubility of is very large while the solubility of various non-metals is very small, which can reduce the of

  • Improvements in gold ore cyanidation by pre-oxidation with

    Compared to the plant performance that uses different conditions, these results show three fold reduction in and a 20% enhancement of kinetics. View Show

  • Cyanide control in the metallurgical process of gold

    oxygen are required in an aqueous solution in order to . For the of pure , the stoichiometry of Elsner’s reaction gives the required molar ratio of free to oxygen as 8:1 or 61/ 2:1 when expressed as a mass ratio. Since is the more expensive reagent, it is desirable from a financial point of view to

  • PDF Online Optimization of a Gold Extraction Process

     · The results for the open loop circuit uncontrolled plant show large losses of at low reagent . The regulatory control of the concentrations in the first tank

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