how to process gold from rock

MINING

Extracting Gold HowStuffWorks

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. The gravel-like material then enters rotating drums filled with steel balls.

The Process of Excavating and Refining Gold - YouTube

How gold is produced from excavation to ingot-form.

Rock Crushing methods and How to recover gold from Ores

Finally once the rock is fully crushed we get to the part about separating out the gold from the crushed rock. Often this is accomplished simply by very careful panning. Panning is the most suitable method if you only have an amount of rock less than about 15 or 20 pounds.

Extracting Gold from Rock - PBS: Public Broadcasting Service

When you mix the finely powdered gold-bearing rock with some mercury the gold within the rock dissolves and forms what& 39;s called a gold amalgam while the rest of the rock is left behind. The next

Easy Ways to Extract Gold from a Rock with Pictures

Crush your rock into a powder using a sledgehammer. Put the rock in a metal container then swing a sledgehammer down onto it. Continue to strike the rock with your sledgehammer until it’s broken up into small pebble-sized pieces. You don’t need to grind your pebbles into a powder when you’re using mercury sulfide HgS to extract the gold.

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how to process gold from rock