extraction of gold and silver

Extracting Gold HowStuffWorks

Removing the goldbearing rock from the ground is just the first step. To isolate pure gold, mining companies use a complex extraction process. The first step in this process is breaking down large chunks of rock into smaller pieces. At a mill, large machines known as crushers reduce the ore to pieces no larger than road gravel.

Gold extraction


Gold occurs principally as a native metal, usually alloyed to a greater or lesser extent with silver (as electrum), or sometimes with mercury (as an amalgam). Native gold can occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles (known as color) embedded in rock minerals.
Ores in which gold occurs in chemical composition with other elements are comparatively rare. They in

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 danger

How to extract silver from used battery

Aug 03, 20170183;32;To collect silver from used battery. Silver Contacts Recovery amp; Refine Complete Process (long video, but worth the watch) Duration 2735. Backyard Scrapping 25,901 views

Extraction of Gold

The gold is not attacked, but the silver is converted into chloride. When the gold has solidified, the molten silver chloride collected on the surface is run off, carrying with it a small proportion of gold. When silver is the chief impurity in the gold, as in that found in Australia, the process is specially applicable.

How to Extract Silver Sapling

Nov 22, 20160183;32;Extract Silver Step. Buy or build an electrolysis machine. This machine will help you to extract silver from your waste chemicals. You can find electrolysis machines in science supply stores, or you can make your own using a 12volt charger and a rubber tub.

The Extraction of Silver Chemistry LibreTexts

Extraction of Silver by cyanide process and its uses. Silver also occurs both in combined state as well as in free state. The important ores of silver are Argentite (Ag 2 S), Copper silver glance, Horn silver, Ruby silver. The silver ores are found along with gold ores in some parts of India.

Extraction Of Silver

Extraction of Silver After a chloridizing roasting the ore should be examined to ascertain the amount of chloride of silver contained in it, according to 21. In case the extraction should not be satisfactory, it is then easier to find what the cause is. The ore is then prepared for leaching.

Gold and Silver Leaching by Cyanidation

What is the Effect of Aeration on Gold and Silver Leaching. Another of the prime requisites of successful cyanidation is free oxygen. Pure oxygen is too expensive to use, instead atmospheric air is the customary source of the required oxygen gas. Some interesting experiments have been conducted using Ozone but the practice has not been adopted commercially on account of the cost in the gold