The separation principle of alluvial gold is to use gravity separation to recover the most of gold and its associated heavy minerals from the raw ore first, and then use gravity separation, flotation, amalgamation, magnetic separation, electric separation and other combined actions to separate gold and heavy minerals from each other to achieve the purpose of comprehensive recovery. The placer gold mining methods is usually divided into three operations: (1) Washing operations The cemented ore sand is separated by water immersion, washing and mechanical agitation, and the gravel, sand and clay are separated, and the clay and gold particles adhered on the gravel are cleaned. The ore washing operation includes three processes: crushing, screening and desliming. (2) Rough separation According to the characteristics of the mine can be divided into these modes: fixed sluice - shaking table process; fixed or vibrating sluice-jig machine-shaking table process; multi-stage jig machine-shaking table process; centrifugal concentrator-shaking table process. (3) Cleaning separation Heavy sand and mercury are mixed in a mercury mixing cylinder, heavy sand is not adsorbed by mercury and is removed, but the gold will be adsorbed into the mercury.
Main Machines
Vibrating screen
The function of vibrating screen is to divide the ore screen into two or more particle size ranges, and then the ores in different size ranges will be sent to different concentrators according to the needs.
Trommel Screen
Trommel screen is a washing and screening equipment for classification according to the particle size of materials, can remove the stone, gravel and impurities these non gold materials in advance
Rotary Scrubber (Heavy clay use)
Rotary scrubber uses a rotating cylinder and internal scraper, water, as well as natural pebbles and rocks in the material, to disintegrate clay, lumps and soft oxides
Jig Machine
Jig machine is a kind of separator which uses the pulsating vertical water flow to loosen the materials and separate them according to different density
Vibrating Sluice
Vibrating sluice perfectly combines the advantages of common gold sluice box and jig machine, but overcomes their disadvantages, such as easy caking and silting-up on the common gold sluice and large water consumption on the jig machine.
Centrifugal Gold Concentrator
Centrifugal gold concentrator is to increase the centrifugal force of minerals to expand the specific gravity difference between heavy minerals and light minerals, so as to achieve separation of mineral and gangue. It is widely used to separate fine gold
Shaking Table
Shaking table uses mechanical shaking and water washing to separate mineral particles according to density. It has high enrichment ratio and high separation accuracy. The gold can be obtained after one time separation.
This is a pre-sale product with estimated delivery of 35 to 60 days
We will try to import this product for you before 27 Aug, 2024 if you order today.
Delivery lead time of 27 Aug, 2024 may change due to unforeseen economic, logistic or customs inspection factors.
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