How to smelt gold ore into pure gold

Gold ore is generally divided into primary ore and oxide ore. The ore is excavated from the mountain and transported to the heap leaching site. The quantity depends on the size of the stockpile. The bottom of the stockpile should be compacted as much as possible without stones and more than 2 drainage ditches. After stacking the ore, spread the grass, then set up water pipes and nozzles, and spray with sodium cyanide solution and alkali solution (the former is used to erode the gold molecules in the mine and the latter is to protect the former from losing too quickly). The water flows into the bucket filled with activated carbon (hereinafter referred to as carbon) through the drainage ditch to make the gold molecules be adsorbed by the carbon. When the gold molecules in the mine run out or the carbon is full, it enters the next process. Next is the charcoal burning process. Put the charcoal taken out of the charcoal bucket into a super large iron pot and use a blower to blow the charcoal into ashes. Activated charcoal is a kind of charcoal that is very resistant to burning. Generally, a pot of charcoal will burn for 15 hours. about. After the charcoal is burned, it becomes slag, and the gold is already in the slag. After the charcoal residue is cooled, crush it and add lead oxide (orange yellow) and borax (same color as salt) and stir well. The evenly stirred charcoal slag is put into the sand washing tank for calcination, and the furnace temperature is as high as 1700 degrees. After calcination for 1-2 hours, dissolve the charcoal slag into a liquid and stir it like water to take it out of the pot. After cooling, pour out the charcoal slag. At this time, the gold and lead have sunk into the bottom of the pot and knocked out to get it. At this time, the charcoal slag also becomes slag, and the cooled slag becomes glassy, which is knocked into small pieces and then calcined with pure lead to extract gold as much as possible. This is calcined leaded gold. Next is the lead-blowing step. Put the lead-containing gold into a cauldron filled with cement, put briquettes or coke on it, blow it with a fan and then stop the blowing to let the temperature rise naturally to above 1300 degrees. At this time, the lead will vaporize and evaporate. , this process takes 2-3 hours. After the lead blowing is the purification step, put the gold after the lead blowing into the pottery cup and raise the furnace temperature to make the gold melt, and then continuously add green six ammonia and borax to remove the impurities in the gold. This step takes more than 1 hour and is also Can be repeatedly purified to pure gold.