30TPH Alluvial Tin Ore Processing Plant In Uganda

1. Feeding & washing stage:

The raw ore will be fed into the raw ore hopper above the vibration feeder by excavator or wheel loader, etc. The vibration feeder is designed with a grizzly bar; the bar gap is 70mm, which can feed material larger than 70mm into a trommel scrubber evenly.

Material less than 70mm goes to the trommel scrubber for washing. The trommel scrubber is designed with a screen part. (two layers of screen with aperture 7mm and 25mm). Later, we can get 3 kinds of outputs: 0-7mm, 7-25mm, and larger than 25mm.

2. Gravity separation:

After being washed by the trommel scrubber, the material larger than 25mm will go to the belt conveyor and be sent to the stockpile. 7- 25 mm will go to one set of rough jig separators for 1st coarse tin separation, then the concentrate will go to a cleaner jig separator accordingly for further separation.

0- 7 mm goes to another rough jig separator for enrichment, then the concentrate will also go to a cleaner jig separator for further separation. The tailings of the rough jig separator will go to one scavenging jig for concentrating again. These circled loop jigs here can improve the recovery rate here.

3. Dewatering stage:

 All the final concentrates from the jigs will go to a dewatering screen for dewatering first. Because there is a lot of water coming out together with the concentrates.

4. Crushing stage: hammer crusher

After dewatering, the overscreen particles will go to the hammer crusher by belt conveyor. The underscreen will be pumped to a mixing tank by a slurry pump. The output from the hammer crusher will flow into the same agitated mixing tank by gravity flow.

5. Gravity & magnetic separation:

The shaking table further separates to obtain a purer tin concentrate. The output concentrate needs to be directly dried, and then the dry concentrate can be put into 3-disc dry magnetic separators for refining to obtain high-purity tin concentrate.

6. Dewatering & Screening:

The tailings from these jig separators and the tailings from the shaking table will first enter the spiral dewatering machine for dewatering, and then enter the high-frequency vibrating screen for screening. Finally, two products of coarse sand and fine sand are obtained.