Placer gold beneficiation process

The purpose of the placer gold beneficiation process is to maximize the recovery of gold ore and various associated heavy minerals from gangue minerals, and then use combined operations such as gravity separation, amalgamation, magnetic separation and electrostatic separation to remove gold and various associated heavy minerals. The minerals are separated from each other to achieve the purpose of comprehensive recovery.

The beneficiation process of gold placer is mainly used in seashore placer, riverside placer or alluvial placer. The process flow of placer gold beneficiation includes cracking, screening, desliming stage, separation operation, etc. Many placer gold mines contain cemented sludge, some of which have a particle size greater than 100 mm. If this sludge is not disintegrated, it will be removed with the waste rock during the screening process, causing gold loss. In addition, vibrating screens and drum screens are often used as screening equipment, both of which have a long service life and large processing capacity.

Process details

Practice has proved that the heavy separation method is an effective and economical treatment method for placer gold mines. Due to the different particle size composition of gold in placer gold mines, different placer gold ore beneficiation equipment has different effective particle size limits for the processed materials, so a reasonable placer gold separation process should use a combination of several different gravity separation equipment.

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