Application of Wet Rod Mill in 150t/d Tungsten Mine Project
Type of ore: Tungsten
Processing scale: 150TPD
Grinding equipment: wet rod mill
Process flow:crushing-grinding and gravity separation-grading and gravity separation-dry tailings discharge process
Tungsten ore can be used in many fields such as aerospace, shipbuilding, automobile industry, and electronics industry. Tungsten ore is characterized by general hardness and brittle nature, so rod mills are usually used in the selection of grinding equipment.
Background of the project
The project is located in Mongolia. The processed ore is tungsten ore, the grade of WO3 is about 7%; the upper limit of the ore particle size is less than 200mm; the hardness is medium hardness; the mud and water content of the ore are both less than 6%; because of the particles above 1mm It contains undissociated tungsten ore, so the ore grinding fineness is -1mm.
After the mined ore is transported to the beneficiation plant, it is stacked in the raw ore storage yard, and is fed to the raw ore bin by the loader. The ore is fed from the original ore bin to the jaw crusher by the trough feeder, and the final product size is less than or equal to 25mm. The crushed ore is conveyed to the powder ore yard with a belt;
Grinding and gravity separation stage
The ore is fed into the rod mill by the belt conveyor, and the rod mill products are given priority to pass through the jigging machine, so that the large particle tungsten ore is preferentially re-selected to obtain qualified grade ore and tungsten ore after jigging. Then go to the spiral classifier for classification, the particles with qualified particle size will enter the reselection stage, and the coarse particle size will return to the rod mill to continue grinding;
The products qualified for ore grinding are transported by the pump to the continuous hydraulic classifier, and the fine mud in the slurry is separated and re-selected with a shaker; the continuous hydraulic classification underflow goes to the top part of the spiral chute and enters the first set of spiral chute for coarsening. After processing, the concentrate enters the shaker for selection, the medium ore returns to the spiral classifier to continue the classification and grinding, so that the tungsten ore that has not been separated will continue to dissociate, and the tailings will enter the second set of spiral chutes. The concentrates of the two sets of chutes are selected by the shaker, the middle ore is transported by the pump to the spiral classifier, the tailings are dewatered by the dewatering screen, and the dewatered tailings are pulled away by the transport truck. After the sieve water is settled in the sedimentation tank, it returns to the system.
The beneficiation product is a gravity-selected tungsten concentrate with a water content of ≤3%; the water content of the tailings after dry drainage and dehydration is about 15-20%, which can be transported out of the stockpile and returned to use.