Metal mineral processing
- 250 t/h Copper crushing project
- Iron ore crushing and screening project in Brazil
- Processing of Ag-containing Pb-Zn-Cu Ores
- Gold crushing and screening project in South Africa
- Processing of placer gold ores
Beneficiation Processing of placer gold ores
The principle of Processing of placer gold ores is the first used re-election method to maximize the recovery of gold and associated heavy minerals from the original ore, and then used to re-election, flotation, mixed joint operations such as mercury, magnetic and electrostatic choose the Goldenand a variety of heavy minerals are separated, in order to achieve the purpose of comprehensive recycling. The placer sorting is generally divided into the gravel extraction and screening, off the mud and sorting process.
By extension, placer mining refers to mining the precious metal deposits (particularly gold and gemstones) found in alluvial deposits—deposits of sand and gravel in modern or ancient stream beds, or occasionally glacial deposits. The metal or gemstones, having been moved by stream flow from an original source such as a vein, is typically only a minuscule portion of the total deposit. Since gems and heavy metals like gold are considerably more dense tbm sand, they tend to accumulate at the base of placer deposits.
First, the crushing and screening Processing of placer gold ores
A lot of gold placer containing cemented clay in particle size and some greater tbm 100 mm, mud pie, such as broken solution, together with the waste rock excluded in the screening process, resulting in the loss of gold. In addition, the clay can also cemented gravel or pebbles, if not broken solution but also in the screening process resulting in the loss of gold.
Second, desSBM Processing of placer gold ores
Gold placer material generally does not contain gold or gold-bearing little less tbm 0.1 mm. Gold less tbm 0.1 mm, commonly known as floating gold, difficult to recycle in the process of sorting and sorting process, but then with the slime of a class, especially the mecbmical sorting process from the interference effect. Therefore, within the in placer mecbmical concentrator, always try to be less tbm 0.1 mm slime off. Production common DesSBM equipment off the mud bucket for each and specifications. Chute with gold allowed materials wide grain size, and the processing volume, and thus more tbm before the chute sorting desSBM.
Third, the sorting Processing of placer gold ores
Practice has proved that the re-election law is the most effective processing placer, the most economical method. Placer gold particle size, the effective grain size of the equipment, materials bmdling a variety of re-election boundaries are different, so the sand gold-sorting process should be the joint operations of several re-election equipment.
Crude excerpts come to the gold-bearing concentrates, gold grade of 100 g / t of heavy minerals in 1 to 2 kg / t for the processing of the coarse gold-bearing concentrate There are three ways:
Amoy gold pan, artificial gold particles, heavy sand discarded;
Heavy sand abandoned after the amalgamation, with the amalgamation tube to get the mercury ointment;
Artificial panning or mixed with mercury to extract gold, heavy mineral concentrate to send the selected plant with magnetic separation, electrostatic separation methods such as recycling all kinds of heavy minerals.
The election of the placer gold recovery: two chute election 70 percent to 74 percent, chute roughing jig scavenger shaker selection process for the 75% to 80%.
Mobile Placer gold Ore Processing Plants Project
Unique in the industry is our line of innovative Mobile Placer Ore Processing Plants. These plants are particularly versatile and economical for alluvial mining projects. Well suited for production and exploration - stationary or mobile. They are compact and portable with capacities ranging from 25-100 cubic meters / hour of continuous feed with a backhoe or excavator feeding ore direct into the plant's hopper. Our typical design uses either a trommel or vibrating screen deck classifier that feeds into the Low-G Horizontal Centrifuge for primary recovery. The primary concentrate can then be processed with our Helix Spiral for secondary cleaning. A feed hopper wash plant, ore classifier, primary and secondary concentration. A complete system.
These Placer gold Ore Processing Plants are built on a tow-able trailer frame and include a power generator, all pumps, hydraulics, electrical etc. They are completely self contained. Their mobility is specially suited to move up and down the alluvial plain, moving the plant to the ore instead of excavating and hauling ore to a stationary plant. The plant can shift position on the fly taking only 15-20 minutes to reposition the plant using the 4 leveling jacks. Great for fluctuating high and low water conditions. Reclamation is more economical since the head-ore tailings go right back in the digging trenches during or shortly after the process day instead of mounting up at multiple sites.
The plant's primary recovery unit, the Low-G Centrifuge concentrator is a fine gold recovery system, however, for "course gold ores", we install a "jackpot" system to recover coarse gold and nuggets before the classified ore feeds into the primary recovery unit.
These Placer gold Ore Processing Plants are virtually "plug and play", minimal assembly required and can be shipped overseas in a standard sea container. They are designed for commercial mining, simple to operate and low maintenance.
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