chlorine vinegar gold leaching

Leaching of an oxide gold ore with chloride/hypochlorite ...

Jun 01, 2007· 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 gold leaching performance were investigated. Due to formation of CaOCl + complex in solution and hence less reactivity, calcium hypochlorite produces a sluggish gold leaching kinetics, taking twice ...

Bleach and Vinegar: 5 Times to Worry About Mixing Up ...

Chlorine bleach is useful for its disinfecting and brightening properties, while vinegar is known for its sanitizing, stain removal, and deodorizing powers.So it's no wonder that people might ...

Newbery–Vautin chlorination process - Wikipedia

The Newbery–Vautin chlorination process is a process to extract gold from its ore using chlorination developed by James Cosmo Newbery and Claude Vautin.. Background. The process of extracting gold from ores by absorption of the precious metal in chlorine gas, from which it is reduced to a metallic state, is not a very new discovery.

Chlorine Based Flooded Pit Leaching of Oxide Gold Deposits ...

The capacity of chlorine based solutions to rapidly and effectively dissolve coarse gold in oxide ores is well established. The inherent advantages of chlorine are high dissolution rates (10 – 100 times those of cyanide), and low cost. The high dissolution rates mean that coarse or poorly liberated gold may be dissolved over relatively short...

Sciencemadness Discussion Board - Concentrated Vinegar ...

Sep 09, 2016· The first of these is dissolving the gold. Bleach and vinegar is sufficient to pull this off -- much to the surprise of many here. ... The initial color of the reaction media seems to be initially yellow what argues in favor of some chlorine (hypochlorite, chlorite, chlorate) or nitrite into the media. ... Search in libgen.io for "gold leaching ...

CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF …

Chloride–hypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of Fe–S at [Fe] –= 10 4 M, [S] = 10– M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.

(PDF) The Leaching of Gold-silver from Refractory Gold ...

Leaching experiments of gold and silver from roasted concentrate were carried out using a chlorine-hypochlorite solution. The leaching rate of gold was 75% at 1.5:1 ratio of chlorine and ...

A green process for extracting gold - New Atlas

Using a solution of what is essentially reusable table vinegar, the team has shown that for CAD$66 (about US$47) it can produce one kilogram (2.2 lb) of gold with 100 liters (26 gal) of reusable ...

Chloride as an Alternative to Cyanide - SGS

Chlorine/hydrochloric acid mixtures are still used today to dissolve gold and platinum group metals (PGM's) in various precious metals refineries around the world. Chloride processes for gold extraction . have continued to attract some attention [2,3], although limited. Volatilization of gold …

processing gold ore at home using bleach

How to Test Gold With Vinegar Home Our Pastimes. ... Gold leaching using common bleach Gold. Help Needed: Gold leaching using common bleach. 3) Once a day stir bucket in a well aerated area and allow chlorine in bleach to leach gold for about a week. 4) After a week, run only the fluid through a coffee filter and transfer to a .

Kinetic Investigation and Dissolution Behavior of Cyanide ...

May 10, 2019· For selected experiments a gold disk containing 20 wt% silver was used to investigate the leaching behavior of a common gold alloy. The Ag20Au-disks …

NICKEL MATTE CHLORIDE LEACHING - Outotec

Leaching Process, is suitable for nickel refining and is a highly flexible, calcium chloride based processing route for nickel matte and other nickel-containing raw mate-rials. It incorporates two-stage leaching and iron precip-itation stages that make the recovery of precious metals such as gold …

How to Use Bleach on Gold Ore to Remove Gold | Sciencing

Apr 24, 2017· Gold is an almost non-reactive 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.

Chlorination Leaching of Refractory Ores - Hydrometallurgy ...

To participate in the 911Metallurgist Forums, be sure to JOIN & LOGIN Use Add New Topic to ask a New Question/Discussion about Hydrometallurgy. OR Select a Topic that Interests you. Use Add Reply = to Reply/Participate in a Topic/Discussion (most frequent). Using Add Reply allows you to Attach Images or PDF files and provide a more complete input. Use Add Comment = to comment on someone else ...

Sustainable technique recovers gold from e-waste cheaply

"The environmental effects of current practices can be devastating," said Foley. Foley used the city of Guiyu, China, considered the e-waste capital of the world, as an example.

Gold Refining Dissolving Gold Powder With Chlorine Gas ...

Mar 06, 2013· Using chlorine gas generated from swimming pool chlorine tablets (trichloroisocyanuric acid) mixed with hydrochloric acid in a gas generating apparatus to demonstrate how to dissolve gold …

Leaching of an oxide gold ore with chloride/hypochlorite ...

The results of the gold leaching experiments showed that the best gold leaching parameters were obtained when the hydrochloric acid-sodium hypochlorite mix was at a ratio of 1 : 2, the added ...

Cyanide-free gold leaching in exceptionally mild chloride ...

Oct 10, 2019· In the leaching experiments, gold leaching in "typical" aggressive chloride leaching media was compared against less aggressive chloride solutions. Leaching experiments ( Table 3 ) in chloride-bromide media (tests 1–8) and in chloride media without bromide addition (tests 9–19) were carried out at Outotec Research Center, Pori, Finland.

Can You Mix Clorox Bleach With Vinegar for a Cleaning ...

Bleach and vinegar are effective cleaning agents when used separately. Although bleach is a strong disinfectant, and vinegar dissolves mineral deposits and kills many types of mold, fungi and bacteria, combining the two can be dangerous.Mixing bleach with an acid such as vinegar creates chlorine gas, a toxic chemical that can be deadly at high levels.

chlorine gold extraction - rndi.it

Dec 17, 2013· bleach, vinegar and salt dissolve gold; User Info Username: Password: Welcome, Guest Please login or, as Nickmarch pointed out, chlorine gas will be released For this reason, start out with tiny additions of vinegar until you get a feel for this process This is then the final leaching solution ready to use, Gold Extraction ...

MINATAUR™: the Mintek alternative technology to gold refining

precipitate that forms during gold leaching proceeds to a silver refining circuit for the production of 99.99 per cent silver. A block diagram of the process is shown in Figure 1. Leaching Feed material of an appropriate gold content and particle size is oxidatively leached in HCl media under a chlorine …

How to Test Gold With Vinegar | Our Pastimes

Use the eye dropper to place two or three drops of vinegar onto the gold piece. If the piece is very small or doesn't lay flat, put the gold into a small bowl so the vinegar can stay in contact with it. Ignacio Lopez/Demand Media . Observe any changes to the gold piece. Gold is a stable metal and does not react with oxygen corroding.

Refine Gold - Gypsy Tinker

Here is how to reclaim that gold and end up with .99+ pure gold. The process is to dissolve all of the base metals in acid and leave behind the gold, then purify the gold even further. What this does is make salts of the metals and those salts (most of them) are soluable in HCl.

WO2013152424A1 - Chloride process for the leaching of gold ...

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 ...

The method of underground leaching of gold from ore placer ...

The method of underground leaching of gold from ore placer deposits using chlorine, which includes the drilling of injection and odajnyk wells, the supply of leach solution into the reservoir, the pumping and processing of productive solution by known methods, wherein the leaching of lead in two stages: first by filing a chlorinated solution of ...

Process simulation and gate-to-gate life cycle assessment ...

Dec 26, 2019· Gold leaching by hypochlorite has been studied by Baghalha and Yen et al., who suggest that an oxidative pretreatment should be adopted when processing refractory ore (Yen et al. 1990). Gold leaching in hypohalide media is highly dependent on the acidity and generates chlorine gas (Lalancette 2009; Lalancette et al. 2015a).

bleach, vinegar and salt dissolve gold

Sep 14, 2013· This would include black sand, clay, finely ground ore or fingers from computer chips. And there is no "trying" about it. This method was the primary method for leaching gold from finely ground ore in the late 1800's, prior to the introduction of cyanide leaching.

RE-REFINING GOLD POWDER WITH ACID & BLEACH! - YouTube

Jul 06, 2018· Method Recycle gold chips electronic components for recycling. - Duration: 21:15. ... Simple gold recovery with salt and vinegar! - Duration: 7:44. 999 Dusan 56,317 views.

Hypochlorite Leaching of Gold Ore

The reactions between gold and hypochlorite leach solutions containing hydrochloric acid and sodium chloride are demonstrated below: 4Au + 16NaOCl + 10H2O → 4HAuCl4 ...

US5236676A - Pressure chlorination of refractory gold ores ...

A method and apparatus are described for recovering gold from aqueous slurries of refractory gold ores containing sulfidic and/or carbonaceous matter. The method entails pretreating an ore slurry with chlorine in a multi-compartment autoclave operated at an elevated pressure. The chlorine used in this pressure chlorination pretreatment can be in either the gaseous or liquid state.

A Method for Leaching or Dissolving Gold from Ores or ...

lurgical gold extraction routes utilize a leaching step to produce a gold-bearing solution as an intermediate product while the recycling of secondary gold from electronic and precious metal scrap is based on the selective and fast dissolu-tion of the precious metal. Therefore, A Method for Leaching or Dissolving Gold from Ores or Precious

Why You Shouldn't Mix Bleach and Vinegar - ThoughtCo

Jun 12, 2019· Mixing bleach and vinegar is a bad idea. When you mix these two substances, toxic chlorine gas is released, which essentially serves as a way to wage chemical warfare on one's self. Many people mix bleach and vinegar knowing it's dangerous, but either underestimate the risk or else hope for increased cleaning power.

chlorine leach recipe problems - Gold Refining Forum.com

Dec 03, 2009· Heres a chlorine leach for you. CaCl2 + CaOClH + H2SO4, this is from the textbook on the metallurgy of gold and was used in lead lined vats to generate chlorine and to leach ores. Also, just a note, most pool chlorine is not calcium hypochlorite …