Gold in alluvial gold ore is in the pattern of simple substance with its big liberation size and blocks/piece/furcation shape. The diameter is 0.**2mm. Gravity separation-amalgamation separation can help to get good beneficiation efficiency. The big blocks of pebbles shall be screened out from the alluvial gold ore, to avoid damage to the jigger sieves. There are other heavy materials but the gold in the gold ore, and these heavy materials can be concentrated as well. There are a lot of blocks of mud-glue which will be discharged together with the gangue if they are nor broken down, and this will lead to loss of gold. And here a rotary screen can make it for both breaking and screening. As a rotary screening machine, the screen size is usually ****0mm for the alluvial gold ore.

 

Gold sand after screening can be put into the gravity separation, and as the most efficient and most economics placer gold beneficiation method, gravity separation makes use of density difference between gold and waste sand by the media of water ( no other chemicals) without any pollution to environment but with its high recovery rate. The difference of gold granularity grain size and also difference of machines' feeding size makes flow sheet of chute-jigger-shaking table work well with its recovery rate over *5%. Jiggers of LTA***0/2 and 2LTC***9/8T have been widely used in the beneficiation of gold alluvial sand, gaining great praises.

 

The heavy sand from the gravity separation is rich in gold and for amalgamation, the efficiency will be high. Amalgamation makes use of the fact that gold can be attracted by mercury alternatively and then gold is mixed with mercury to form amalgam. Forui Amalgamator is designed for the placer gold ore. It is easy to operate with its recovery rate high to over *8%, and also the mercury can be recycled.

Rotary screen, jiggers, floatation separators, shaking tables, amalgamators from Forui has been widely used in the beneficiation of alluvial gold ore. Mini machine test can be done for you free here in Forui if samples of *0 kgs can be available from you.