Gold mining
Gold milling is the process of crushing, grinding, and extracting gold from ore. It’s a key step in gold mining—turning rock into recoverable gold. Here’s a clean, simple breakdown 👇
Crushing & Grinding
• Crushing: Big rocks are broken into smaller pieces (jaw crusher, cone crusher).
• Grinding (milling): Crushed ore is ground into fine powder using ball mills or rod mills.
👉 The goal is to free tiny gold particles trapped in the rock.Gold Extraction Methods
After milling, gold is separated using one (or more) of these methods:
• Gravity separation
Uses gravity (sluice boxes, shaking tables)
✔ Best for coarse, visible gold
• Cyanide leaching (CIP/CIL)
Gold dissolves in a cyanide solution
✔ Most common for fine gold
⚠ Needs strict environmental control
• Flotation
Gold sticks to bubbles and floats
✔ Used when gold is mixed with sulfide minerals
- Recovery & Refining
• Gold is recovered from solution or concentrate
• Melted into doré bars (gold + silver)
• Later refined to high-purity gold
Small-scale vs Large-scale
• Small-scale milling: stamp mills, ball mills, gravity methods
• Industrial milling: large ball mills, automated plants, chemical processing
If you want, I can explain:
• gold milling for small-scale miners
• machines used in gold milling
• cost and setup of a gold mill
• or environment-friendly alternatives
Just tell me 👍