Introduction to gold mineral physics mineral processing

The method is widely used to treat base metal ores and separate various sulfide ores, as well as to remove lean gangue. Typically in a series of flotation operations, gold is associated with a product and is recovered in subsequent sulphide concentrate smelting and refining of metal products, or by cyanide-fired concentrate. Foam flotation can be used to separate gold and sulfide minerals from finely ground pulp.

When the process comprising gold telluride, pyrrhotite, brass ore and sulfide ore sulfide minerals quartz, or containing pyrite or pyrrhotite, to be floated and a portion of the ore concentrate, the flotation The tailings and the middle ore are separately cyanated, and the concentrate is calcined to fully expose the gold in the sulfide and the telluride, and cyanidation is carried out.

When the cyanidation method cannot recover the symbiotic gold from the sulfide in the ore, it can be floated after cyanidation, which is beneficial to improve the recovery rate of gold.

When the gold ore and the sulphide ore are associated, the sulphur ore collector (such as xanthate) may be used to float the gold ore to recover the gold-containing sulphur concentrate. Practice has shown that the use of a mixed collector (a mixture of dodecyltrithiocarbonate (C12-TTC) and sodium isobutylxanthate (SIBX)) is more than a single collector SIBX flotation of gold. The effect is better, the single flotation process indicator is not as good as the joint process. Because the flotation does not recover the coarse free gold well, and the amalgam can recover this part of the gold well, the flotation + amalgam combined process is one of the means to improve the gold recovery rate.

2 gold mine re-election

The re-election mainly utilizes the difference in density between pure natural metals (density of about 16 to 19) and gangue (density of about 2.5) to separate gold and useless gangue (lean ore).

In simple production, the material is carried by the water stream down the chute, which is usually equipped with lateral barriers (strips) to recover the gold. The grid chute is the main equipment used by individual gold miners. Spiral chutes and centrifugal concentrators , such as the Kenneth concentrator or the Falcon concentrator, are now sometimes used to recover gold.

Gold can also be recovered from the slurry and the heavy particles are recovered by using a velvet pad chute. Historically, sheepskin has been used in this way to recover gold.

Gold's re-election is separated by a jigging, hydraulic catcher, shaker and chute.

Re-election is used as a simple method for recovering gold from raw ore (if natural gold is present in the coarse particles) or as a method of preconcentration of gold or gold-containing compounds, followed by other beneficiation methods (eg, amalgamation, cyanide).

The re-election method recovers gold, and generally uses a combined process of re-election and flotation to select the concentrate to recover gold by amalgamation.

Walk-behind Laser Screed

Walk behind Laser Screed is mainly used in large area concrete construction, such as large workshop, airport, the plaza and so on.

- Adopts imported laser transmitter and receiver.

- Hydraulic drive, strong power.

- Electric control screed head.

- Adopts Honda gasoline engine with electric start.

- Two kinds of tyres optional.

- Integrated computer controller, easy to operate.

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