How to Extract Gold from Black Gold Sand?
                                                                         
                                                                                       Forui Jig Machine For Black Sand Gold Recovery

Black Sand contains many heavy materials including hematite, magnetite iron, iron pyrite, lead carbonates, sphalerite, chromite, and sheelite, to name the most common. There are many combinations of these as well as many others in small amounts specific to an area and too numerous to list. Suffice it to say, they are all black or grey in color and so are known collectively as black sand.

Black sand gold ore is kind of placer gold and the extraction of gold from this black sand is similar to that of the normal placer gold ore. There are heavy metals associated with gold. Some black sands separate reasonably easily from the heavier metals while some do not. So, if this sand is all black sand, what is the difference? Taking a look at the following pictures about the raw gold black sand ore:

Gold with blank sands

 Placer gold mining of black sand is no mystery. It involves specific gravity when separating gold from other minerals. "What is specific gravity, and what does it have to do with black sand?" Well, in the black sand, gold and other minerals are mixed together, and the gold can not be extracted from the sand in air. However, specific gravity is the wet weight relationship of everything to water, with water being zero. Everything, once wet and under water, has a different weight. This weight relationship with water we call specific gravity.

Placer mining gold enrichment from black sand depends on this relationship to separate lighter materials from heavier ones. Black sand has a specific gravity of from 5 to 11, or 5 to 11 times the weight of water. Gold, on the other hand, has a specific gravity of around 19 and platinum around 21. As you can see, gold and platinum can be two to three times the specific gravity of black sand, and this is why gold or platinum can be extracted from black sand ore. Here Forui jig separators make use of this specific gravity differnece to get high grade gold concentrate, and lab test proves a great efficiency about the black gold enrichment, and the following picture is about the test of black gold sand jigging extracting:

Specific gravity helps us with the separation process by classifying the different sands and gravels in rivers and streams making it easier to get high grade gold or platinum concentrate. And here Forui has designed new machines for gold recovery from black sand, and the following models can be widely used to get gold concentrate of +85% Au. And the following pictures are about jiggers can be used in black gold ore extraction:

gold jig concentrator

Forui here can supply free machine test if samples can be available. Detailed flow sheet with a general plant investment can be available if enough about the ore and requirement about beneficiation can be known. Your contact to Forui will be highly appreciated.

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