How to Get Gold From Alluvial Gold Ore

Alluvial Gold Separator
The gold content is low in alluvial/placer gold ore and kind of high efficiency and energy-saving beneficiation equipment is needed to get ideal concentrating efficiency. Here Forui will share its placer gold mineral processing equipment to get gold concentrate from river sand and other placer gold mines.
Here is a group of placer gold pictures and the placer gold ore in picture is after washing with lots of gravels. The gold is in shape of granules and pieces, and the following picture is the gold concentrate from placer gold ore:

How to get gold granules like sand from alluvial gold ore? Actually, there is only gravity separation for placer gold ore dressing because gravity concentration can be high-efficient and energy-saving to get high grade gold concentrate, and this is what placer gold separation needs. Gold density is much bigger than that of dinas, and gold is simple element in free state, so gravity separator can help to extract gold to the biggest extent. The gold extraction equipment involved cover slide screen, fixed sluice, vibration screen, jig concentrator, amalgamation cylinder, etc.

1. Slide screen for placer gold ore dressing

The sliding screen for placer gold ore is mainly to remove the lumpy stones without any gold be a simple and high efficient screening method to improve the valid working efficiency and handling capacity of the whole processing line. The sliding screen is welded of steel rods with a certain inclination, and a water pipe up the sliding screen. And the water pipe is used to liberate the sticky material avoiding the possible loss of gold.

2. Fixed sluice of placer gold

Placer gold sluice is fixed sluice and it presents a certain inclination with gold carpet on the sluice to capture coarse gold granules. Gold sluice is kind of simple gravity separators widely used in the placer gold extraction. However, the recovery can not be guaranteed because it is mainly used to get coarse gold and it is usually working as rough concentration equipment for placer gold ore to enlarge the handling capacity.

3. Placer gold jig concentrator

Jig concentrator is also kind of gravity separator and it is usually to enrich the gold from the output tailing from fixed sluice to get the lost gold from sluice. This gold extraction jig equipment is essential to recover the fine gold ore and gold recovered by jig concentrator occupied a big percentage, much bigger than that concentrating from sluice.

4. Amalgamation cylinder for placer gold purification

Amalgamation cylinder can be named as gold enrichment plant of placer gold ore. The concentrate from jig concentrator and sluice is heavy gold concentrate of high grade Au, and refining for the rough gold concentrate is necessary to extract the gold from the heavy sand. Shaking table, centrifugal separator, and amalgamation cylinder can be used as refining machines, and they shall be chosen accordingly. Capacity of shaking table is small and its recovery is low. Centrifugal separator can enrich with high efficiency but its capacity is small while amalgamation cylinder is not so easy to operate with it s high recovery rate. For some gold concentrate, there is a compact coat over gold, and only amalgamation can help to extract the gold with high recovery. And amalgamation cylinder has been used commonly in placer gold refining.

The following is the placer gold enrichment site in Xinjiang, China. The factory uses sliding screen to screen, fixed sluice to separate roughly, gold machine to scavenge and amalgamation cylinder to refine to process alluvial gold ore in Bazhou, Xinjiang. This flow sheet satisfied the clients with its large handling capacity, high recovery, and great beneficiation efficiency. It help to gain pure gold of 1000 grams

As a professional manufacturer of placer gold beneficiation equipment, Gongyi Forui Machinery Factory has rich experience in gold enrichment and free test can be done and detailed flow sheet can be designed if samples can be available.