The mine is excavated from the mountain and transported to the heap leaching site. The quantity depends on the size of the yard. The bottom of the yard should be as compact as possible. There should be no stones, etc., and there should be more than 2 drainage ditch, and then use colored strips. Covered, the wooden fence and bamboo fence are placed on the drainage ditch, and then the mine is piled up.
After stacking the mine, the grass is laid and the water pipe and nozzle are erected. The sodium cyanide solution and the alkali solution (the former is used to erode the gold molecules in the mine and the latter is to protect the former from escaping too fast) to spray, containing gold molecules. Water flows into the barrel containing activated carbon (hereinafter referred to as carbon) through the drainage ditch to cause the gold molecules to be adsorbed by the carbon, and the carbon is discharged into the process until the gold molecules in the ore are finished or the carbon is full.
The next step is charcoal, the charcoal removed from the barrel into the large carbon iron pot with a hair blower into ashes so that the char combusts, activated carbon is a very general fire-resistant char pot so on charcoal to burn 15 hours about.
After the charcoal is burned, it becomes a slag. Gold is already in these slags. You can see it.
A little yellow is gold!
After the crack so that carbon residue was added lead oxide (orange), and borax (the same color salt) and mix.
The uniformly stirred carbon residue is placed in a sand-filled pot for calcination, and the furnace temperature is as high as more than 1,700 degrees.
After calcination for 1-2 hours, the carbon residue is dissolved into a liquid, such as water, and the pan can be discharged. After cooling, the carbon residue is poured out, and the gold and the lead are sunk into the bottom to be knocked out and available.
At this time, the carbon residue also becomes slag, and the cooled slag is in the form of glass, which is knocked out into small pieces and calcined from the newly added pure lead to extract gold as much as possible.
This is the leaded gold after calcination.
The next step is to blow lead, gold lead into the cement-filled cauldron, placed above the balls coal or coke, and blown by the fan stops blowing warm naturally allowed to 1300 degrees, which is lead to a gasification evaporated This process takes 2-3 hours.
Gold after blowing lead.
After the lead is blown, the purification step is carried out, and the gold after the lead is put into the pottery cup, the furnace temperature is added to enable the financialization of the yellow, and the green hexammine and borax are continuously added to raise the impurities in the gold. This step takes more than one hour. It can be repeatedly purified to 999 pure gold in more purity.
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