100TPH Alluvial Gold & Columbite Processing Plant In Brazil

1. Feeding stage: feeding hopper, vibration feeder with 70mm grille bars

The raw ore first enters the raw ore feeding bin, which is the starting point of the entire ore dressing process. The ore passes through the vibrating feeder with 70mm grille bars, which has a grid spacing of 70mm for preliminary screening.

2. Washing and screening stage: trommel scrubber

The materials with a size less than 70mm will be washed and screened in the drum scrubber. At this time, the materials with a size greater than 2mm will be sent to the jaw crusher by the belt conveyor. The materials with a size less than 2mm will directly enter the first and second (two in total) jigging separators.

3. Crushing stage: jaw crusher and hammer crusher

• The materials larger than 70mm first enter the raw ore feed bin, and then are evenly fed to the jaw crusher through the vibrating feeder for coarse crushing, breaking the larger ore into smaller particles.
• The coarsely crushed ore enters the transfer bin and is then transported to the next stage through the electromagnetic vibrating feeder.
• The electromagnetic vibrating feeder further controls the feed amount of the ore. Then, it enters the hammer crusher through the belt conveyor for secondary crushing. The finely crushed materials are finally sent to the 3rd to 6th (a total of four) jigging separators for gravity separation.

4. Gravity separation stage: jig separators, centrifugal concentrator, gold sluice box, shaking tables

• After being processed by the drum ore washer and hammer crusher, the materials with a size less than 2 mm are all sent to the (total of 6) jig separators for rough selection. Then the tailings from the first three and last three jigs are sent to two centrifugal concentrators for further enrichment and separation.
  The slurry separated by the centrifugal concentrator enters the gold sluice box to separate the concentrate 1.
• At this time, all the concentrates after the jig and centrifugal concentrator enter the slurry pool through the sand pump. They are sent to the distribution bucket and then to the shaking table to separate the concentrate 2.

5. Drying and magnetic separation stage: spiral dewatering machine, three-disc magnetic separator

• The tailings after the gold sluice chute and shaking table are sent to the spiral sand washer for dehydration. The overflow enters the sedimentation tank to reduce pollution to the environment. The rest is transported to the tailings pile.
• Put all the materials of concentrate 1 and concentrate 2 in the drying shed for drying to obtain the final concentrate product. Then send the materials to the three-disc magnetic separator for magnetic separation to separate magnetic minerals, weakly magnetic minerals, and non-magnetic minerals (iron, niobium, gold).