Placer Gold Mineral Processing

Placer gold miningmainly refers to mined from the land surface or river or underground. It mainly usesgravity separationbecause its density is much bigger than other minerals.

Placer Gold Mining

Introduction

About Placer Gold

Placer goldrefers to the gold formed byrock goldin the mountain washed by the river and separated from the quartz vein. Because this kind of gold is as fine as sand, it is called placer gold.

Gold miningis divided into rock, cave digging, and panning in rivers and streams containing gold. For example, gold taken from mines is called gold or melon seed gold, and gold panned from gravel in water is collectively referred to as placer gold. Generally speaking, the gold ore is larger, and most of the placer gold is as fine as sand, which is called placer gold.

Types of Placer Deposit

According to the landform and formation conditions, placer gold can be divided

·River gold deposit, in the river bed, bank, or shoal.

·Flood plain gold deposits, mostly large and medium-sized deposits.

·Terrace gold deposits, in the valley slope terrace area, most of them are mostly the remaining parts of the original floodplain gold deposits that were eroded.

·Valley gold deposits are usually coarse in size, with high grade and low water content, it is a good source of gold production, but a shortage on a small scale.

·Karst gold deposits are often produced in karst tunnels and caves.

Mineral Processing

Placer/Alluvial Gold Mineral Processing

Gold Washing:This process is for wash clean the clay and mud in raw material, most popular used are the gold trommel scrubber washer and gold washing trommel screen. Agold trommel scrubberis for washing raw material with much sticky claytrommel screenis for washing raw material with no sticky clay.

Sieving:After washing, we need to sieve out some bigger waste material; the under-screen slurry will go to the next machine. This process can use a trommel screen, orvibration screen, or a high-frequency vibration screen.

Primary Concentration:This process is for rough gold concentration, and can use agold centrifugal concentratororgold jig separator. The concentrated ore from them will go to the final concentration machine.

Final Concentration:The concentrated ore from the jig machine or centrifugal will go togold shaking tablefor the gold final concentration, which can get high-purity gold.

Tailing Recovery:Usually, agold sluice boxis used to recover tailings that come from a centrifugal machine. So can get more gold.

Refining:If a customer needs very high-purity gold and needs to smelt it into a gold bar for sale, they can use a gold smelting furnaceto smelt gold dust on a gold bar.

Alluvial Gold Washing Plant