The process of leaching sulfide gold ore by Poster thiourea method, and extracting gold from low-grade gold ore by thiourea carbon leaching method

The process of leaching sulfide gold ore by Poster thiourea method, and extracting gold from low-grade gold ore by thiourea carbon leaching method
Placer gold ore beneficiation process method:
The content of gold in the ore is extremely low. In order to extract gold, the ore needs to be crushed and ground and beneficiation methods are used to pre-concentrate or separate the gold from the ore. Gravity separation and flotation are commonly used in gold mineral processing.

Gravity separation
Gravity separation is widely used in rock gold mines. It is mostly used as an auxiliary process to recover coarse gold in the grinding circuit, creating favorable conditions for flotation and cyanide technology, and improving The mineral processing index improves the total recovery rate of gold and plays a positive role in increasing output and reducing costs. The main equipment used include chutes, shakers, jigs, short cone cyclones, etc. Judging from the majority of gold mines in my country, the combined flotation and gravity process (gravity separation for flotation tailings) is suitable for adoption. In the future, the stage grinding and stage separation process should be vigorously promoted, and the principle of energy recovery and early recovery should be promoted.

Flotation
According to statistics, about % of rock gold mines in my country use flotation to prepare gold. In recent years, the product structure has undergone major changes, and on-site processing is often used (of course due to Conflicts between beneficiation and smelting, as well as pricing and other issues, forcing mines to deal with them on site) have led to greater development of flotation technology, which occupies a very important position in gold production. There are usually two processes: preferential flotation and mixed flotation. In recent years, there have been new developments in process modification and agent addition systems, and the flotation recovery rate has also been significantly improved.
Gravity separation plays a very important role in placer gold production. Flotation is a widely used beneficiation method in rock gold mines. Currently, about % of rock gold mines in my country use this method to separate gold. The level of beneficiation technology and equipment In constant improvement and development.
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