Step 1: Crushing
Due to the raw ore size being large, it is necessary to be crushed into suitable particles. The loader sends raw ore into a vibrating feeder, which feeds material evenly to the jaw crusher for the primary crushing process. In an ore beneficiation plant, one important rule is to crush more and grind less. If necessary, a cone crusher or hammer crusher could be added as a second crushing process to get suitable particles.
Machine list: hopper, vibrating feeder, jaw crusher, cone crusher, or hammer crusher(optional)
After crushing, the material goes into a ball mill via feeder for fine sizes, such as 325mesh. The ball mill and spiral classifier is a closed-loop circle. The material after ball mill grinding comes into the classifier for classification. Qualified fine ore into next process and unqualified coarse ore return back to ball mill for grinding again. In this grinding process, we must first make clear the requirements for each ore particle standards.
Machine list: electromagnetic vibrating feeder or similar, ball mill, spiral classifier
Step 3: Selecting
In the production process, not all the ore powder are in line with the standard. The useful ore powder needs to be selected via professional equipment, such as a mixing tank, flotation machine, shaking table, spiral chute, etc. Then the qualified concentrate powder from ore is stocked in the settling pond.
Machine list: mixing tank, flotation machine, magnetic separator, centrifugal gold machine, shaking table, etc.
Remarks: Due to various constraints, there is always some residual moisture in the ore powder, concentrate dehydration process could be added. This step could meet the requirements of transportation and smelting etc.
The machines, such as box pressure filter, rotary dryer, etc is optional.