The thickening tank is mainly used for concentration an […]
The thickening tank is mainly used for concentration and dewatering of concentrates and tailings. The dewatering capacity can reach about 75, but the production efficiency of the thickening tank is determined by the dosage and area parameters. The most important point is the thickening tank automatic control system. It is the key to determine whether the thickening tank is running or not.
Here are some ways to increase the efficiency of the thickening tank:
Determine the dosage
The effect of thickening the concentrated pulp depends on whether the dosage is suitable, the amount of the medicine is small, and the effect of rapid consolidation and settlement of the tailings particles is not achieved, resulting in overflow running; the amount of medicine is not only uneconomical, but also easy to sink. Forming an island, causing the thickening tank to not work properly.
After determining the optimum amount of flocculant in the laboratory, the unit area parameters of the thickening tank are selected from the test results of the flocculant dosage. According to the concentration of tailings discharged from the Sandak concentrator, it is 26%, the concentration of the designed underflow is 45% -55%, the flocculant is 12-26g / t, and the turbidity of the overflow water is less than 200 @10-6. When the return water usage requirement is required, the parameter design area parameter of the thickening tank is determined to be 01041 m2/(t#d).
Automatic Control System
The automatic control system consists of mine control and emission control. The ore-mining control is to send the 4-20 mA signal to the microcomputer control system by the flow meter and concentration meter of the incoming mine and the liquid level display meter of the sediment layer. After the data processing, the flow meter acts on the flow meter in the flocculant addition system. Determine the amount of flocculant added.