separation

Mineral processing, also known as beneficiation, is the art of treating crude ores to separate valuable minerals from waste rock (gangue). This is the initial step after mining, preparing a more concentrated material for extractive metallurgy.12

Key operations include:
* Comminution: This involves crushing and grinding the ore to liberate the valuable minerals from the surrounding rock.1
* Concentration: This stage separates the valuable minerals from the waste material by exploiting differences in their properties, such as color, density, magnetic susceptibility, or surface chemistry. Common methods include flotation, gravity separation, magnetic separation, and electrostatic separation. For example, flotation uses air bubbles and chemicals to separate sulfide ores, causing mineral particles to attach to the bubbles and float to the surface.134
* Sampling and Analysis: Throughout the process, samples are taken and analyzed to monitor the ore's value and optimize recovery.1
* Dewatering: After concentration, water is removed from the processed material through filtration, thickening, or drying.1

These processes aim to produce the richest possible concentrate at the lowest operating cost.1