Black tungsten ore beneficiation technology - re-election

Wolframite mineral processing plant re-election operations generally use the classic black tungsten ore beneficiation process re-election, that is, multi-level Jig, multi-level shaker, middlings regrinding process. After the fine crushed qualified mine is classified by vibrating screen, the multi-stage jigging is carried out, and the jigging re-election of the fine sand is obtained. The coarse-grained jigging tailings enters the rod mill and is ground again, and the fine-grained jigging tailings is hydraulically graded. After grading, enter the multi-stage shaker and rough-sweep to produce the shaker to re-select the wool, the shaker tailings are discharged into the tailings pond, the shaker is returned to the mine and then re-selected, and the jigging and shaker re-election of the sand enters. Selected assignments. The principle flow of the black tungsten ore re-election operation is shown in the figure.
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Figure 1 China's black tungsten mine classic re-election principle process

The jigging early harvest, the shaker tail is the core of the black tungsten re-election process. According to the characteristics of the ore and the characteristics of the process, each mine improves the beneficiation efficiency of the wolframite by improving the re-election process parameters. For example, reasonable adjustment of the size range of the shaker, improvement of hydraulic classification efficiency to ensure the selection of the shaker, application of efficient jig and screening equipment . Equipment is the key to re-election operations, and the dynamic sieve jig is further promoted in the selection of black tungsten ore. Because of the combination of the up and down vibration of the jip bed screen and the movement of the water medium, the moving sieve jig can obtain a larger stroke than the ordinary diaphragm jig, thus having a large particle size (up to 40 mm) and processing. Large capacity, high efficiency, and low water consumption. Replacing the traditional diaphragm jig with a moving screen jigging not only improves the recovery rate but also greatly reduces the amount of water used. Some black tungsten mines will use the sieve jigging for the beneficiation of the washing and overflowing sand, and achieved good results.

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