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The separation of placer gold ore by gravity separation is mainly based on the relative density difference between minerals. The process generally includes grinding, screening, desliming and gravity separation. Let's take a look at the different stages. Placer gold ore beneficiation equipment.
When placer gold ore enters the mineral processing process, the selection of its gravity separation equipment is very important. It usually needs to be selected based on the particle size characteristics of placer gold, and Part of the placer gold ore beneficiation needs to be completed through a combined gravity separation method.
The main placer gold ore beneficiation equipment includes: jig, shaker, spiral chute, and centrifugal concentrator.
Jig: The processing particle size range is 30~0.5mm, roughing in conventional placer gold ore; sweeping in low-grade placer gold; p>
Shaking table:The processing particle size range is 2~0.037mm, used for the selection operation after jig roughing;
Spiral chute:The processing particle size range is 0.6~0.2mm, which is used for the roughing operation of some low-grade placer gold ores;
Centrifugal concentrator:The processing particle size range is 0.074~ 0.01mm, used for fine-grained single placer gold recovery.
Most gold contains cemented mud masses, some of which have a particle size greater than 100mm, and some will even be cemented on gravel or pebbles. . The placer gold particles need to be separated from impurities in the mud (or gravel, pebbles, etc.) through grinding and screening operations. Generally, 20-40% of the waste rock can be eliminated through grinding and screening.
Commonly used equipment at this stage include: crusher, ball mill, vibrating screen, cylindrical screen, cylindrical scrubber, hydraulic washing bed, etc.
Placer gold desliming operations generally remove slime smaller than 0.1mm from placer gold mines. The common desliming equipment is a desliming bucket.
In addition to the above-mentioned placer gold ore beneficiation equipment, placer gold ore that is difficult to process can also be sorted through cyanide gold leaching equipment and heap leaching gold extraction equipment. For the selection of the above placer gold mining equipment, it is recommended to conduct a mineral processing test first, and customize a reasonable gold extraction process and supporting equipment based on the test results.
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