Leach Gold Ore with Chlorination Forum

2015106 ensp 0183 enspIf the reading is less than 1000mv you need to add hypochlorite to get it up to 1000mv When you add hypochlorite you will raise the pH so you will need to add HCl to get the pH back into range If the redox is less than 1000mv you will start preferentially leaching base metals and will also precipitate out some of the already leached gold

Comparison of Cyanide and ChlorideHypochlorite Leaching

In this research cyanide and chloride–hypochlorite leaching of gold from a pyritic concentrate particle size −75 53 181m gold content 27 15 g t were compared It was shown that only 13 6 of gold was extracted after 24 h leaching by cyanide as compared to 37 2 after 8 h by chloride–hypochlorite Effect of ultra–fine milling of the concentrate on the leaching was investigated

Gold extraction Wikipedia

2019713 ensp 0183 enspGold extraction refers to the processes required to extract gold from its ores This may require a combination of comminution mineral processing hydrometallurgical and pyrometallurgical processes to be performed on the ore 1 Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold

Gold Leaching from a Refractory Gold Concentrate by the

In this research NaCl NaClO solution is used to leaching gold from a refractory gold concentrate and the influence of NaCl and NaClO concentration reaction time to the leaching rate were investigated in this experiment The raw materials and the leaching residue were characterized by a series of analysis methods such as XRD XRF SEM and

Gold extraction with muriatic acid and bleach from gold ore

Gold extraction with muriatic acid and bleach from gold ore Products As a leading global manufacturer of crushing grinding and mining equipments we offer advanced reasonable solutions for any sizereduction requirements including Gold extraction with muriatic acid and bleach from gold ore quarry aggregate and different kinds of minerals

The method of underground leaching of goldbearing ores

57 Abstract The method of underground leaching of goldbearing ores involves the injection of leach solution through pairs of spaced injection wells with one of the injection wells each have a pair within the array ore and place in it the positive electrode and the other in the host rocks and place in it the negative electrode and as a leach solution download solution of sodium chloride

Chloride–hypochlorite oxidation and leaching of refractory

4 BAGHALHA M 2007 Leaching of an oxide gold ore with chloride hypochlorite solutions International Journal of Mineral Processing 82 178–186 5 BAGHALHA M 2012 The leaching kinetics of an oxide gold ore with iodide iodine solutions Hydrometallurgy 113–114 42–50 6

leaching gold ore icas2017conference

The Leaching System at The Weekend Prospector Inc the ore extraction chemistry manual is the companion piece to the equipment you can order the leach system from me but the leach system is shipped from idaho you can order the manual directly from my web page and use it with your own system if you have one leaching gets the gold and platinum groups that you cant see

Effect of Pretreatment of Sulfide Refractory Concentrate

20131224 ensp 0183 enspore in terms of gold recovery is not well defined but several authors have pointed out that less than 60 gold recovery by direct cyanide leaching after fine grinding of mineral indies a refractory mineral 1 The refrac tory ore must be destroyed or attacked by chemical means with the use of oxidative processes such as oxida

Hypochlorite Pretreatment of a Low Grade Carbonaceous Gold

201869 ensp 0183 enspHypochlorite pretreatment of a refractory carbonaceous gold ore showed promise as a method for oxidizing sulfidic and carbonaceous materials prior to conventional cyanide heap leaching However previous studies showed hypochlorite consumption is high and gold extraction is proportional to hypochlorite consumption The high hypochlorite consumption is due to oxygen depletion as the

How to Leach Gold Ore With Chlorination Sciencing

How to Leach Gold Ore With Chlorination Place the gold ore in the cement mixer Pour in the hot water bleach and HCL The mixture should be 15 percent sodium hypochlorite and 33 percent hydrochloric acid of the rock In fact according to MineEngineer the amount of oxidation is directly proportional to the rate of gold leaching

gold ore leaching australia delhaizezoersel

Gold ore Carbon In Leaching CIL processing technology Gold ore Carbon In Leaching CIL processing technology SBM work together with the famous laboratory in China to design and deliver the gold leaching plant It help the mine factory to extract a major part of the residual gold contained in gold ore or some tailings

Papers by Keyword Gold Leaching scientific net

Leaching of middlerefractory gold ore show that both of the consumption of thiosulfate and leaching rate was decreased compare to the traditional copper–ammonia thiosulfate system Thiourea is not stable in base solution but it was found that gold dissolution rates can be increased with a little thiourea the mechanism is still unclear


201966 ensp 0183 enspEBSCOhost serves thousands of libraries with premium essays articles and other content including CHLORIDEHYPOCHLORITE OXIDATION AND LEACHING OF REFRACTORY SULFIDE GOLD CONCENTRATE Get access to over 12 million other articles

Advances in Gold and Silver Processing

201683 ensp 0183 enspHYPOCHLORITE LEACHING OF GOLD ORE 7 1 Free Milling Gold Ore The free milling gold ore used in this study contains sulphide minerals such as chalcopyrite and pyrite Conventional cyanidation resulted in 95 of the gold being extracted under strong leaching conditions i e a grind of 90 minus 200 mesh leach with 1 g5 NaCN at pH 11 0 for

The Chemistry of the Extraction of Gold SAIMM

2011529 ensp 0183 enspThe Chemistry of the Extraction of Gold M J Nicol C A Fleming and R L Paul gold plants where uranium and gold are recovered from the same milled ore Uranium is leached in acidic solution pH 1 to 2 and any aurocyanide pre 173 sent in solution in the feed to the uraniumleaching plant will precipitate as AuCN and will be lost with the

A Method for Leaching or Dissolving Gold from Ores or

200911 ensp 0183 ensplurgical gold extraction routes utilize a leaching step to produce a goldbearing solution as an intermediate product while the recycling of secondary gold from electronic and precious metal scrap is based on the selective and fast dissolution of the precious metal Therefore A Method for Leaching or Dissolving Gold from Ores or Precious

Sodium hypochlorite GoldRefiningWiki

2018121 ensp 0183 enspSodium hypochlorite can be used as an alternative for sodium bromate in bromate hydrolysis Leaching ore Sodium hypochlorite together with hydrochloric acid has been used for gold ore leaching For example in the iGoli method Leaching gold from electronics I haven t done any research if this is a workable leach of plated objects yet

DOC A Comparative Study of Cyanide and Chloride

A Comparative Study of Cyanide and Chloride – Hypochlorite Gold Leaching of Oxide Ore from Placer Surigao Del Norte An Undergraduate Thesis Presented to the Faculty of the Department of Metallurgical Ceramics and Mining Engineering College of Engineering MSUIligan Institute of Technology In Partial Fulfillment of The Requirements of the Degree of BACHELOR OF SCIENCE IN METALLURGICAL

201522 ensp 0183 enspA 1007 7545 2013 04 0042 03 Study on Leaching of Refractory Gold Ore with Sodium Hypochlorite YANG Cong JIN Ke qin TANG

How to Use Bleach on Gold Ore to Remove Gold Sciencing

Gold is an almost nonreactive metal but halogens chlorine bromine fluorine and iodine can dissolve it Chlorine is the cheapest and lightest product that can achieve this Bleach is the chemical compound sodium hypochlorite When combined with hydrochloric acid the mixture produces chlorine that dissolves gold from gold ore

Alternative lixiviants to cyanide for leaching gold ores

Initial bisulfideleaching tests using the YES process attained 25–31 gold extraction from a biooxidized Nevada ore compared with 88 by conventional cyanide leaching Hunter et al 1998 At the same time 39–81 silver was recovered compared to 86 with cyanide

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