Method for clarifying overflow water in tailings concentrating large well

Abstract

The invention relates to the technical field of beneficiation, in particular to a method for clarifying overflow water in a tailings concentrating large well. The method comprises the steps of: addinga cationic flocculant KC840 or a non-ionic flocculant KN600 or a clarifying flocculant KL4043 to a central well of the concentrating large well, and cooperatively adding an anionic flocculant KA635 to a tailings chute part in front end of a tailings feeding collecting box of the concentrating large well. According to the method for clarifying the overflow water in the tailings concentrating largewell, the flocculants are added into the tailings concentrating large well, and precipitation is promoted through flocculation of suspended matter in the water, so that the degree of clarification ofthe overflow water in the tailings concentrating large well is improved; based on the addition mode, the content of the suspended matter in the overflow water is reduced effectively, and it is ensured that the content of the suspended matter in the overflow water is less than 300 mg / L.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for clarifying tailings concentrated large well overflow water. Background technique [0002] Tailings are wastes produced by mines. At present, most mines in China use tailings banks to store wet fine-grained tailings. In the traditional tailings storage process, the tailings slurry is pumped to the tailings storage through pipelines. Due to the problems of large pumping volume and high power consumption, a pre-concentration process is added before pipeline transportation. Concentration first, then pumping However, the problems of high power consumption, large land occupation, and potential safety hazards have not been fundamentally improved. [0003] With the country's increasing requirements for mine safety and environmental protection, tailings dry stacking and tailings comprehensive utilization technologies have developed rapidly in recent years, forming...

AI Technical Summary

Problems solved by technology

[0004] In the actual production process, due to the small size of the spare tailings pond, the underground water inflow is lower than the hydrological survey. Although measures to introduce new water have been taken, the mineral processing water in the dressing plant is still relatively tight, and a series of measures have been taken, such as collecting the Water resources in the living area, increasing the utilization rate of circulating water, which also puts forward higher requirements on the water quality of the overflow water of the concentrated well. Although the on-site concentrated well is equipped with a flocculant adding device to add flocculant, the flocculation and settlement effects are poor. , there is a phenomenon of running muddy, and the content of suspended solids obviously exceeds the standard

In the case of limited supply of fresh water for beneficiation, unqualified ring water will inevitably deteriorate the grinding and beneficiation effect, resulting in inclusion of concentrate and lower grade