How did the ancients make gold? The ancient gold-making technology was limited by science and technology, and most of them only used high-temperature methods, that is, melting the ore that might be gold ore with a boiler or firewood, and then putting the melted yellow ore solution into the mold with a self-made mold, but the purity was not high.

Detailed refining method of ancient gold;

1. The first process is grinding: first, put the ore into a water hammer, crush the large ore by hydraulic action, and then grind it into powder with a stone mill.

2. The second process is panning. That is, the ore powder is washed with water to remove the part that does not contain ore, leaving a powder containing more gold and silver, which is called concentrate powder in jargon.

3. The third process is called granulation and sintering. That is, the powder containing gold and silver is mixed with rice to make pellets, which are layered with charcoal to remove sulfur from sulfide and sintered into brittle ore pellets.

The fourth process is called lead reduction smelting. Lead in the ore mass is mixed and melted, and chemical replacement is carried out to form lead blocks containing gold and silver.

5. The fifth process is called blowing. That is, lead blocks containing gold and silver are smelted on plant ash, and oxygen is blown in to remove lead from the lead blocks. Blowing off the grass ash can harvest high-purity gold and silver.