Sciencemadness Discussion Board

Dec 07, 2017· Gold leaching using acetic ac I am doing research on gold recovery from e waste I have extracted gold from gold finger nails using acetic acid, Hcl and oxidant I got very good result & all gold dissolved in solution My main concern is about form of gold in solution whether it is gold acetate or chloroauric ac...

A green process for extracting gold

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 (22 lb) of gold with 100 liters (26 gal) of reusable ....

Scrap Gold Recovery Kit

In the process of gold extraction from scrap computer electronics parts, Sodium Metabisulfite is usually used along with Urea Urea, also called carbamide, is soluble in water and alcohol and is non-combustible In gold recovery processes, it is used as a neutralizer of excess nitric acid in ,...

Gold leaching using acetic ac

Jul 12, 2017· I am doing research on gold recovery from e waste I have extracted gold from gold finger nails using acetic acid, Hcl and oxidant I got very good result & all gold dissolved in solution My main concern is about form of gold in solution whether it is gold acetate or chloroauric ac...

Gold cyanidation

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 complexIt is the most commonly used leaching process for gold extraction Production of reagents for mineral processing to recover gold, copper, zinc and silver represents ....

Refining Gold Using Muriatic and MX3

Refining Gold Using Muriatic and MX3 Introduction , The aqua regia is not used up yet, so you can use the same acid to dissolve the gold off more boards You can continue to use this acid, several times, to dissolve the metal off additional boards until it is no longer effective The acidy boards should be rinsed (with water) in another bucket...

Gold Recovery : 8 Steps (with Pictures)

Pouring the acid into a coffee filter the acid passes through the filter leaving the gold behind, save the acid do not dump it down the drain Next dump the remaining fingers and circuit boards into a deep plastic tray and add water, sort out the cleaned of gold parts, put the cleaned parts in the waist and save the un-cleaned parts for re-dipping...

Gold Refining Purify Process

This is a free tutorial on gold recovery method using nitric acid to extract pure gold from old gold and scraps of gold by process of dissolving unwanted metals When I use this refining method, I regard the purity of the gold as 22kt, and I alloy it accordingly down to 18kt or 14kt...

How to Refine Gold with Urea

Instructions Weigh your gold smelt For every ounce of gold, you will need a container with a 300-milliliter capacity So, if you're refining 5 ounces of gold, you will need a 1500-milliliter container or about 1 ½ quarts Add 30 milliliters of nitric acid for every ounce of gold So, if you're refining 5 ounces of gold, you would need to add 150 milliliters to the container Allow the gold ....

Aqua regia

Aqua regia (/ ˈ r eɪ ɡ i ə, ˈ r iː dʒ i ə /; from Latin, lit "regal water" or "king's water") is a mixture of nitric acid and hydrochloric acid, optimally in a molar ratio of 1:3 Aqua regia is a yellow-orange (sometimes red) fuming liquid, so named by alchemists because it can dissolve the noble metals, gold and platinum, though not all metals...

"Gold Recovery for Dummies?"

When using nitric acid to remove base metals in gold recovery it is very easy to misplace your gold On electronics that use gold for shielding (such as RF shielding) the gold can be very thin and instead of coming off in foils will separate into finely divided particles and will get lost in trash...

hcl and bleach

Feb 23, 2011· The methods to dissolve gold using muriatic acid and bleach have been discussed at length including proper safety and mixing techniqu Here's one of many such posts: Using HCl-Cl to Dissolve Gold The use of ferrous sulfate (copperas) as a precipitant for gold has also been discussed at length It needs to be fresh to work properly...

hcl and bleach

Feb 23, 2011· The methods to dissolve gold using muriatic acid and bleach have been discussed at length including proper safety and mixing techniqu Here's one of many such posts: Using HCl-Cl to Dissolve Gold The use of ferrous sulfate (copperas) as a precipitant for gold ,...

Gold Recovery Chemicals | E

May 14, 2017· Gold Recovery Chemicals Guide for Our Beginners: If you are new to e-waste recycling and gold recovery then this page is for you In this guide, I will tell you some basic things, formulas, and some tricks The reason for this post is that many people could not understand some acid names, formulas, and other gold recovery chemicals...

Sustainable technique recovers gold from e

We use a minute amount of an acid and an oxidant to finish our solution" , consider that it costs $1,520 to extract one kilogram of gold using aqua regia and results in 5,000 litres of waste ....

Recovery of nitric acid and gold from gold

The separation factors for the two acids are listed in Table 1It was found that the separation factor of HNO 3 over HCl (β HNO3/HCl) changed with an increase in the concentration of TBPAs shown in Fig 2, the purity of extracted HNO 3 however, decreased from 754% to 707% as the concentration of TBP increased from 80 vol% to 100 vol% TBP despite the improved separation factor...

Cyanide Use in Gold Mining

Mining lower grade ore requires the extraction and processing of much more ore to get the same amount of gold Partially due to cyanide, modern mines are much larger than before cyanide was used; create vast open pits; and; produce huge quantities of waste More than 20 tons of mine waste are generated to produce enough gold ,...