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ATIEMAR Heavy Industry which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m ². Another workshop in Shangjie Industry Park covers 67000 m ².

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gold electro chlorine leach

2021-04-26T03:04:14+00:00

  • Selective recovery of gold from waste mobile phone PCBs

      In the 2nd stage gold was mostly leached out (93% recovery, ∼67 mg/L) from the residue of the 1st stage by the electrogenerated chlorine in 01 mol/L HCl Gold recovery from the leach liquor by ion exchange using Amberlite XAD7HP resin was found to be 95% with the maximum amount of gold adsorbed as 4603 mg/g resin

  • Cited by: 183
  • Electrochemical recovery of minor concentrations of gold

      1 Introduction Gold cyanidation is by far the main industrial gold leaching process and it has been used for over a century in largescale gold extraction operations all over the world (Deschênes, 2016)In spite of this, raising concerns regarding the toxicity of cyanide and its inability to efficiently leach carbonaceous and refractory ores has led to an increased interest in developing

  • Cited by: 26
  • Leaching of an oxide gold ore with chloride/hypochlorite

    An oxide gold ore was subjected to chloride/hypochlorite leaching at room temperature The effects of three factors, including Ca(OCl)2 vs NaOCl, OCl− concentration, and HCl concentration on

  • 预计阅读时间:9 分钟
  • Dissolving Gold and Precipitating Gold Pyrometallurgy

      If you want to leach gold you need an oxidizing environment (add chlorine gas or clorox) until you reach an ORP of 1000mV, at a Ph of about 5, hopefully warm temperature and you will leach gold Once in solution, separate liquid from solids, reduce the ORP to 100 500 mV using NaHSO3 and your gold will precipitate

  • [PDF]
  • The process design of gold leaching and carboninpulp

      The leaching of gold can be conveniently represented by the Elsener equation: [1] Although air agitated leach tanks were commonly used in the industry, mechanically agitated reactors are preferred due to lower operating costs Typical residence times in the leach section may range from 20–40 hours depending on the head

  • Chlorine leach process FALCONBRIDGE NICKEL MINES

    A series of chlorine leach tests was performed to illustrate the effect of redox potential on dissolution of copper and PM's from this material In each test 100 g of the leach residue were treated in one litre of leach solution analyzing in g/l: Cu + Ni NCl 5 50 50

  • Cited by: 22[PDF]
  • REVIEWING THE OPERATION OF GOLD

      saturated by chlorine gas) while bromine water has also been mentioned It was the first metallurgical process to recover gold Others studying the action of chlorine water onto gold, suggested that the dissolution mechanism is based on the reaction of molecular chlorine in water followed by a decomposition of a fraction of the hydrochloric acid,

  • Electrochemical Chlorine Generator Electrochlorination

    The Electricide ® chlorine generator can replace gas chlorine storage for potable and process water disinfection Does the safety risk of storing liquified chlorine gas in 70kg cylinder or 920kg drums concern you? The Electricide ® chlorine generator removes

  • Purification of Gold by Electrolysis

      The Moebius Process of Purification of Gold by Electrolysis is now in successful operation and is said to be specially suitable for refining copper bullion containing large proportions of silver and gold with small quantities of lead, platinum, and other metals, but is chiefly used in parting dore silver containing not more than 20 per 1,000 of base metals

  • Gold etching for microfabrication SpringerLink

      The etching of gold is a key enabling technology in the fabrication of many microdevices and is widely used in the electronic, optoelectronic and microelectromechanical systems (MEMS) industries In this review, we examine some of the available methods for patterning gold thin films using dry and wet etching techniques Dry methods which utilise reactive ion etching (RIE) have a number of

  • [PDF]
  • The process design of gold leaching and carboninpulp

      The leaching of gold can be conveniently represented by the Elsener equation: [1] Although air agitated leach tanks were commonly used in the industry, mechanically agitated reactors are preferred due to lower operating costs Typical residence times in the leach section may range from 20–40 hours depending on the head

  • Chlorine leach process FALCONBRIDGE NICKEL MINES

    A series of chlorine leach tests was performed to illustrate the effect of redox potential on dissolution of copper and PM's from this material In each test 100 g of the leach residue were treated in one litre of leach solution analyzing in g/l: Cu + Ni NCl 5 50 50

  • [PDF]
  • REVIEWING THE OPERATION OF GOLD

      saturated by chlorine gas) while bromine water has also been mentioned It was the first metallurgical process to recover gold Others studying the action of chlorine water onto gold, suggested that the dissolution mechanism is based on the reaction of molecular chlorine in water followed by a decomposition of a fraction of the hydrochloric acid,

  • [PDF] The process design of gold leaching and carbonin

    1 The modelling of adsorption and leaching R P Woollacott, Stange, W King Environmental Science 1990 To date developments in the simulation of carboninpulp (CIP) adsorption circuits have focused primarily on the modelling of adsorption This series of three papers descriptionbes a development in a

  • Electrochemical Chlorine Generator Electrochlorination

    The Electricide ® chlorine generator can replace gas chlorine storage for potable and process water disinfection Does the safety risk of storing liquified chlorine gas in 70kg cylinder or 920kg drums concern you? The Electricide ® chlorine generator removes

  • Jaechun LEE Principal Researcher PhD Korea

    The leaching of gold from the scrap mobile phone PCBs by electrogenerated chlorine as an oxidant and its recovery by ion exchange process was investigated chloride and cyanide, which

  • 职位: PhD
  • Recovery of fine floating gold finishing

      Dissolve the fine gold into a chlorine bleach solution or into a solution of aqua regia and be sure to use eye, hand and lung protection and do it outdoors Then raise the pH with lye (sodium hydroxide) and the metals will precipitate out of solution as hydroxides These metal salts can then be placed in a covered crucible in a furnace and

  • [PDF]
  • Refining of Gold at the Rand Refinery SAIMM

      African gold bullion and goldcontaining byproducts and is the largest establishment of its kind in the world, being responsible for approximately 62070 of the free world's production of fine gold 103 Function Rand Refinery Limited is a subsidiary of the Chamber of Mines and operates

  • Gold etching for microfabrication SpringerLink

      The etching of gold is a key enabling technology in the fabrication of many microdevices and is widely used in the electronic, optoelectronic and microelectromechanical systems (MEMS) industries In this review, we examine some of the available methods for patterning gold thin films using dry and wet etching techniques Dry methods which utilise reactive ion etching (RIE) have a number of

  • [PDF]
  • Corrosive Effects of Chlorides on Metals

      In presence of chloride ions pits are growin g by autocatalytic mechanism Pitting corrosion of a stainless steel is illustrated in the Figure 1 The actual pitting corrosion phenomenon is shown on propeller shaft of high speed craft, and the pit depth was measured with dial gauge as shown in Figure 2 Fig 1 Pitting corrosion deep growth

  • Process for the extraction of precious metals from

    The process comprises the steps of leaching the concentrate with hot hydrochloric acid and chlorine gas to dissolve most of the gold, platinum and palladium, treating the residue from the leaching step with an excess of an alkaline oxidizing agent to solubilize the ruthenium, slurrying the resulting solids in water, combining the precious metal values from the slurry with the liquor from the

  • Electrochemical Study of Redox Reaction of Various Gold

    The redox reaction of gold III chloride in acid solutions has been electrochemically investigated using a cyclic voltammetry technique This paper emphasizes the current and potential sites at which gold III chloride is reduced in hydrochloric acid that is vital to electrochemical evaluation of gold recovery The solutions were prepared by reacting HCl with AuCl3 in various concentrations

  • Electrochemical Chlorine Generator Electrochlorination

    Why handle and store hazardous liquified gas chlorine or bleach when a safer, cleaner and purer alternative exists! Take a closer look at the Electricide ® electrochemical chlorine generator The Electricide ® electrochemical chlorine generator is safe and

  • [PDF] The process design of gold leaching and carbonin

    1 The modelling of adsorption and leaching R P Woollacott, Stange, W King Environmental Science 1990 To date developments in the simulation of carboninpulp (CIP) adsorption circuits have focused primarily on the modelling of adsorption This series of three papers descriptionbes a development in a

  • [PDF]
  • HYDROMETALLURGY OF GOLD: NEW PERSPECTIVES

      inleach processes, the use of resins and solvent extraction techniques A considerable effort has also been made to treat refractory ores With that purpose pressure oxidation, bacterial oxidation and more recently electrooxidation have been investigated with good results as alternative techniques to the classical oxidative roasting

  • [PDF]
  • Simple method for extracting gold from electrical and

    bromide as phase transfer agent), gold with a purity of 97% can be extracted (6) The use of oxidant agents (electrogenerated chlorine) and resin recovery (Amberlite XAD7HP) of gold from mobile phones was found to achieve a maximum recovery of 95% (11) Researchers who have achieved high percentages of gold

  • Gold etching for microfabrication SpringerLink

      The etching of gold is a key enabling technology in the fabrication of many microdevices and is widely used in the electronic, optoelectronic and microelectromechanical systems (MEMS) industries In this review, we examine some of the available methods for patterning gold thin films using dry and wet etching techniques Dry methods which utilise reactive ion etching (RIE) have a number of

  • Reverse electroplating for environmentfriendly gold

      "Reverse electroplating for environmentfriendly gold recovery / refining" 2001 Q I am about to embark on scrap circuit board recycling, primarily for the gold and platinum content I am about to set myself up with an acid solution [aqua regia], that dissolves the

  • [PDF]
  • Corrosive Effects of Chlorides on Metals

      In presence of chloride ions pits are growin g by autocatalytic mechanism Pitting corrosion of a stainless steel is illustrated in the Figure 1 The actual pitting corrosion phenomenon is shown on propeller shaft of high speed craft, and the pit depth was measured with dial gauge as shown in Figure 2 Fig 1 Pitting corrosion deep growth

  • How to Extract Gold From Electronics : 11 Steps (with

    How to Extract Gold From Electronics: In this Instructable, I will show you how to extract gold from computers using products most people have lying around in their homes The way I extract the gold is relatively straightforward and pretty easy, but the chemicals used are very dangerou