100 TPH Alluvial Chrome Process Plant in Zimbabwe

JXSC has designed a complete Flowchart and provides a full set of processing plant machines & all accessories for Zimbabwe’s alluvial chrome process plant in Zimbabwe. The client has their engineering team set up this plant, so there is no requirement for our engineering site service. We offer a detailed layout design with base construction drawings accordingly.

1. The processing capacity required is 100TPH.
2. The raw material size is less than 2mm, accounting for 40-50% of raw ore.
3. The chrome grade in the raw material is 17-23%, and the raw ore is mostly soil and clay, mixed with some stones, gravels, and leaf branches.
4. The required target grade after beneficiation process should be 48-50%.

• • Vibrating feeder
  • Trommel scrubber
  • Vibrating screen
  • Belt conveyor
  • Slurry pumps
  • Spiral chutes
  • Spiral sand washing machine
  • Shaking tables

1. Raw materials are unloaded to the raw material hopper by the excavator, then to a vibrating feeder to evenly feed raw material to the trommel scrubber. The vibrating feeder with the grizzly bar, has a gap of 70mm, in the case of big stone in raw materials, so above 70mm big stone can be removed from grizzly feeder.

2. Trommel scrubber is used to wash raw materials and screen out waste material above 2mm. The raw materials are mostly soil and clay, so I need to go to the trommel scrubber for washing first. The Trommel scrubber has 2 layers of PU screen, mesh size 2 mm and 20mm. 20mm PU screen for protecting 2mm mesh.

3. After washing and screening by trommel scrubber, -2mm materials are pumped to rougher spiral separators, a total of 18 sets. The middling of rougher spirals is pumped to cleaner spirals for further separation to improve the recovery rate. Cleaner spirals are 9 sets. So total spirals are 27 sets.

4. All chrome concentrates from rougher spirals and cleaner spirals go on a magnetic separator to reduce some magnetite iron to increase the Cr/Fe rate.

5. Chrome concentrate from the magnetic separator is pumped to shaking tables, a total use of 30 sets of shaking tables. Each 15 sets shaking table for one distribution tank. Use the slurry pump to send chrome concentrate to the distribution tank, then the distribution tank distributes slurry to each set shaking table. The shaking table is the final fine separation machine, it can effectively further improve chrome grade in concentrate to meet our customer’s requirement. The middling of all shaking tables is returned to cleaner spirals for separation again to increase the recovery rate. The tailings from shaking tables are sent to the settling pond.

6. The chrome concentrate from all shaking tables is sent to a screw dewatering machine for removing mostly water. The underflow of the screw dewatering machine goes to the dewatering screen for further dehydration, so the dewatered concentrate can be transported to the finished product pile by belt conveyor. And the overflow of screw dewatering machines and under-screen slurry is returned to the hydrocyclone by pump, the overflow of the cyclone goes to the settling pond, and the overflow goes to the dewatering screen. That is the whole process for the dewatering system.

JXSC is a professional mining equipment manufacturer & mining ore solution expert. It has many successful cases such as gold plants, diamond solutions, etc., If you need such a service please contact us.