Summary of sand gold beneficiation equipment and amalgamation equipment
Elemental gold are generally Jinsha gold ore, the monomer is relatively high dissociation degree, mostly granular, flake, shaped like twigs, gold particle size is generally 0.5 ~ 2mm, so use reselection - amalgamation of The method can achieve a good beneficiation effect. Before re-election, the waste rock of the Chinese gold in the Shajin Mine should be screened out to prevent the stone from clogging the re-selected equipment screen. However, in addition to gold, the sand gold mine contains other Heavy minerals can be recovered by re-election. The sand gold mine mostly contains cemented mud. If the mud mass is not broken, it will be removed along with the waste rock during the screening process, causing loss of gold. Therefore, the drum sieve (cylinder sieve) can be used to complete the disintegration. And the screening operation, the drum screen (cylinder screen) is a drum type screening equipment , and the screening sand gold generally adopts a screen aperture of 10-20 mm.
The sieved sand gold mine can enter the re-election operation. It has been proved that the re-election method is the most effective and economical method for sand gold sorting. It mainly uses the difference in specific gravity between gold and waste sand, and uses water as a medium for sorting. No need to add chemicals, no pollution to the environment, and high recovery rate. Due to the different particle size composition of gold in the sand gold mine, the effective grain size limit of the various re-election equipment is different. Therefore, the reasonable sand gold sorting process should be the joint operation of the chute, the jig and the shaker. Select, then use the jig to sweep the selection, the shaker is selected, the recovery rate can reach more than 95%.
The gold content in the heavy sand selected by the re-election process is relatively high, so the efficiency of gold extraction by amalgamation method is very high. The gold extraction method is based on the gold particles being easily wetted by mercury, and then the mercury is gold. The internal diffusion of the particles forms the principle of gold amalgamation and captures natural gold.
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