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Introduction to the Method of Gold Extraction from Gold Concentrate

  來源:www.sxsttl.com
With the continuous mining of domestic gold mines, the gold ore processing methods and technology are also progressing. The application of new metallurgical technology improves the grade of concentrate separation. The following chapters introduce several methods of gold concentrate extraction for your understanding.
1. Cyanide process for gold extraction
Cyanide process is the main method of extracting gold from ore or concentrate in modern times. The cyanide process includes several basic processes, such as cyanide leaching, washing and filtering of leached pulp, extraction of gold from cyanide solution or cyanide pulp and smelting of finished products.
2. Mercury Mixing Method
This method has its unique features in recovering dissociated natural gold, especially coarse-grained gold. It is based on the selective wetting of gold particles in pulp by liquid metals, separating them from other metal minerals and gangue, and recovering gold in high form by mercury distillation.
3. Extraction of gold by resin method
Tree wax process is suitable for treating clay-type gold ores with high mud content and complex ores containing natural adsorbents such as graphite, asphalt, shale and iron oxide, which are difficult to be treated by traditional cyanide-zinc replacement method. It is also suitable for treating roasted gold-bearing pyrite and low concentration gold-bearing liquid of heap leaching.
Resin slurry process is better than carbon process, and its production cost is lower. Ores containing adsorbed gold (such as clay ores containing carbon) are better treated by ion exchange method. However, the shortcomings are that resin selectivity is worse than activated carbon, particle size is fine, density is smaller than activated carbon, wear resistance is poor, and it is easy to adsorb on the surface of the pulp. Therefore, the pulp containing more ions of other metal cyanide complexes should be treated by carbon slurry process.
Above is the related introduction about the method of gold concentrate extraction. Do you understand it? If you happen to have the needs of gold concentrate, silver concentrate, lead-zinc concentrate and so on, you are also welcome to call us at any time to contact us!
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