In recent years, alluvial gold ore beneficiation technology and it’s beneficiation equipment has become the mainstream of the mineral processing industry, then what are the alluvial gold ore beneficiation methods currently most used? and what’s the beneficiation equipment? Here we will do a brief introduction to the alluvial gold ore beneficiation, mining methods and equipment selection. Hope this can help you.
Panning, the oldest gold mining method
Usually, alluvial gold ore has very low gold content, and generally needs to be beneficiated and enriched by various high-efficiency, energy-saving gold processing equipment, which is commonly known as gold panning, it is a very old yet useful method to beneficiation gold since thousand years ago and used by our ancestors.
In various gold panning methods, re-election method is a method with energy saving, high efficiency, environmental protection and other advantages of mineral processing, and re-election method is extremely suitable for the separation of alluvial gold ore, therefore, re-election method is the main method of alluvial gold ore beneficiation.
Mining of alluvial gold ore
Alluvial gold deposits are usually mined by gold mining boats, hydraulic mining, excavator mining and underground (shaft) mining methods.
Alluvial gold ore beneficiation process
Alluvial gold ore beneficiation methods to re-election method, alluvial gold ore re-election process, mainly divided into.
(1) washing operation. The purpose of the washing operation is to make the gravel, sand and soil and grain soil separation, washing the gravel on the adhering fine mud and mixed with its gold particles. gold wash plant and trommel scrubber are often used in gold washing operation.
(2) Sieving operation. Generally large gravels do not contain gold, in order to improve the efficiency of gold processing equipment, generally need to wash the alluvial gold ore for screening, remove large pieces of non-gold stones.
(3) re-election operation. The re-election operation is the key operation of alluvial gold ore dressing, the process is to break most of the waste stones, to obtain coarse gold concentrate process, so the effect of the process directly affects the whole alluvial gold dressing process beneficiation index.
(4) Selection operation. According to the different types of alluvial gold ore, selection operations can be used to re-election equipment, amalgamation equipment and so on various equipment and methods, the purpose is to further enhance the content of gold.
Alluvial gold panning equipment
The washing operation is generally used in alluvial gold panning processing, it’s simple, practical, but also with the screening operation, in the screening equipment directly with water washing and screening.
Screening operations, the main equipment used for vibrating screen, trommel screen, etc., in the alluvial gold processing plant, the most commonly used screening equipment is trommel screen.
Re-selection operation is the core part of alluvial gold ore processing, the operation part of the commonly used equipment are chutes, jig machine, etc., which large and medium-sized gold processing plants use jig machine as the main re-election equipment, small gold processing plants use chutes and other simple, inefficient re-election equipment.
According to the different types of gold ore selection equipment, for single gold ore can be selected using re-election equipment, for containing other precious metals need to be recovered at the same time the gold ore can be recovered using a variety of other methods combined process.