intrnsive leaching gold patent

  • US8388730B2 Process of leaching gold Google Patents

    A process of leaching gold comprising the steps of: a) leaching copper from copper sulfide ore material that contains gold or contains silicate ore containing gold until the copper grade is reduced to 7.9 wt % or less; b) mixing the resulting material having a copper grade of 7.9 wt % or less with a gold leaching solution selected from the group consisting of a first solution containing

  • InLine Leach Reactor Gekko

    Inside the drum, the ore concentrates mix with a typically strong 1-2% cyanide solution and pure oxygen (in the case of gold extraction), known as intensive leaching. Specialised baffles inside the drum keep solids in constant contact with the stone solution. The correct combination of chemicals and ore, plus the slow rolling action of the drum, creates a highly efficient leaching reaction.

  • GoldiLOX: The golden edge Gekko

    Using cyanide-based solution to “leach” gold is one of the most common processes used by mine operators to extract gold from ores and concentrates. Gekko’s all new GoldiLOX has been specially formulated to speed up this process, allowing more gold to be recovered more often, increasing plant throughout and gold production.

  • Method of gold extraction from gravity concentrates

    The closest is the method according to the patent (No. WO 66/15856. "The way to extract gold. SW 11/00, 11/08). The process of extracting gold and/or silver from gold and/or silver ores or concentrates, which includes stages: filling the reactor concentrate and leaching of gold by circulation cyanide solution, leaching gold, in the reactor feed is used as the oxidizer compressed oxygen in the

  • Leaching device Patent search, search patents and

    Patent registration. Leaching device. C22B3/02 Apparatus therefor. FIELD: metallurgy. SUBSTANCE: device includes reactor and external assembly for forced circulation of reaction mixture. External assembly consists of circulation pump, connection pipe and mixing chamber located in the direction of mixture after circulation pump and equipped at least with two ejecting nozzles connected to the

  • gold ore carbon in leaching processing

    AND INTENSIVE LEACH MAY. HERALD THE FUTURE FOR GOLD ORE PROCESSING. Carbon In Leach (CIL) or Merrill Crowe. The challenge ahead is Get price. Mercury control in the cyanidation of gold ores Utah (carbon adsorption and electrowinning or zinc cementation). Ultimately, prior to the Generally. the extraction of gold is accomplished by cyanidation in which Get price. GOLD PLUS

  • CA2880943A1 Method for leaching gold from gold ore

    The present invention improves the leaching speed of gold while also inhibiting the generation of sulfur dioxide in a method for leaching gold from gold ore containing pyrite without using highly poisonous chemicals such as cyanogen, thiourea, thiosulfuric acid, and halogen gas. A method for leaching gold involving: pre-treatment steps which include a step (1) for preparing a gold ore

  • THIOSULPHATE LEACHING AN ALTERNATIVE TO CYANIDATION

    • The thiosulphate leaching of gold ores has great potential to reduce the impact on the environment compared to the cyanidation process. Unlike cyanide, which is highly toxic, the chemicals used in the thiosulphate leaching process are benign, and there is great potential to apply the technology in those jurisdictions of the world where the use of cyanide is banned outright, or is subject

  • US Patent Application for METHOD FOR AMMONIACAL

    Although many methods for ammoniacal leaching are described in the literature, including the patent literature, all require one or more of multiple leaching stages, energy-intensive pre-treatment of the ore (for example roasting or grinding) and/or elevated leach temperatures and/or pressures. These requirements necessitate complicated engineering and significant energy consumption, so it is

  • gold cyanidation line components and price 」

    Gekko also offer a readymade modular plant known as the Gravity Flotation Intensive Leach GFIL system. GFIL is a complete offtheshelf gold processing modular plant designed to advance traditional whole ore cyanidation. Its ideal for mines and ores with: Restricted cyanide use permissions . Inquire Now; Cyanide Leaching Of GoldMine Engineer.Com Gold Cyanide Solution Leaching Gold With

  • Method of gold extraction from gravity concentrates

    The closest is the method according to the patent (No. WO 66/15856. "The way to extract gold. SW 11/00, 11/08). The process of extracting gold and/or silver from gold and/or silver ores or concentrates, which includes stages: filling the reactor concentrate and leaching of gold by circulation cyanide solution, leaching gold, in the reactor feed is used as the oxidizer compressed oxygen in the

  • Intensive Cyanidation Resources Gold Technology

    Intensive Cyanidation Reactor by Resources Gold Technology Intensive Cyanidation Reactors (ICR) are used primarily for the gold leaching of high grade concentrates such as gravity concentrates. While applications exist for low volume high grade refractory gold ores, operational costs make intensive cyanidation reactors most viable on higher grade concentrates.

  • US Patent for Chloride process for the leaching of gold

    8/04/2013· A process for the extraction of gold from a gold-bearing ore or concentrate, comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a temperature of at least 90° C. and an Eh of at least 900 mV. After a liquid/solids separation step, the solution obtained is subjected to an organic solvent

  • Leaching device Patent search, search patents and

    Patent registration. Leaching device. C22B3/02 Apparatus therefor. FIELD: metallurgy. SUBSTANCE: device includes reactor and external assembly for forced circulation of reaction mixture. External assembly consists of circulation pump, connection pipe and mixing chamber located in the direction of mixture after circulation pump and equipped at least with two ejecting nozzles connected to the

  • The Role of Gravity and Intensive Cyanidation in

    Intensive leaching in an InLine Leach Reactor is essential to recover the gold from the gravity concentrates. Tabling is not a preferred option since recovery is lower than intensive cyanidation and any gold losses to table tails will report to CIL where recovery is reduced by the presence of preg-robbers. Furthermore, tabling recovery from the gravity concentrates is particularly poor due to

  • An Overview of the EnviroLeach Gold Recovery Process

    and chemistry are currently under patent application. 2. Background The oxidizing lixiviant consists of a base formula of non-toxic dry ingredients which are mixed with water. The oxidant is uniquely generated and regenerated for re-use electrochemically. While the primary formula was found to leach gold, a number of leach enhancing agents have been identified that improve the gold leach

  • US Patent Application for METHOD FOR AMMONIACAL

    Although many methods for ammoniacal leaching are described in the literature, including the patent literature, all require one or more of multiple leaching stages, energy-intensive pre-treatment of the ore (for example roasting or grinding) and/or elevated leach temperatures and/or pressures. These requirements necessitate complicated engineering and significant energy consumption, so it is

  • THIOSULPHATE LEACHING AN ALTERNATIVE TO CYANIDATION

    • The thiosulphate leaching of gold ores has great potential to reduce the impact on the environment compared to the cyanidation process. Unlike cyanide, which is highly toxic, the chemicals used in the thiosulphate leaching process are benign, and there is great potential to apply the technology in those jurisdictions of the world where the use of cyanide is banned outright, or is subject

  • Gold cyanidation Wikipedia

    Gold cyanidation (also known as the cyanide process or the MacArthur-Forrest process) is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex.It is the most commonly used leaching process for gold extraction.. Production of reagents for mineral processing to recover gold, copper, zinc and silver represents

  • An Overview of the EnviroLeach Gold Recovery Process

    6/02/2017· and chemistry are currently under patent application. 2. Background The oxidizing lixiviant consists of a base formula of non-toxic dry ingredients which are mixed with water. The oxidant is uniquely generated and regenerated for re-use electrochemically. While the primary formula was found to leach gold, a number of leach enhancing The Summary of the test results indicate that the

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