Question

how gold and silver are mined and purified
kindly the answer should be on point ​

Answer 1

Answer:

• In underground mining, deep shafts are dug into the ground to extract ore.
• Once ores are extracted, they are crushed, ground, and separated through a process called “flotation”
• this is done to achieve mineral concentrations that are 30-40 times higher than naturally occurs
• Cyanidation is the most important purification process for gold mining. In a process called vat leaching, a sodium cyanide solution is applied to good quality ore, causing the ore to release gold into the solution. ..
• . The Wohlwill process will purify gold to 99.9 percent by electrolyzing gold.

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