Tailing slurry filling system and technology

Abstract

The invention provides a tailing slurry filling system and technology, and belongs to the technical field of tailing treatment. The tailing slurry filling system utilizes a deep-cone thickener to perform thickening and dehydration on low-concentration tailing slurry, the low-concentration tailing slurry can quickly settled and thickened after being pumped to the thickener, fine-fraction tailing cannot be lost, the upper overflow water is clearer, and the overflow clear water can be transferred to a production pool for storage; and tailing chambers serve as high-concentration slurry storage andtailing placement devices and are specially responsible for the storage, slurry making and tailing placement of the tailing. The tailing slurry filling system and technology have the advantages thatrespective merits of the deep-cone thickener and tailing chamber are fully utilized, tailing slurry treatment is carried out, so that the loss of the tailing is reduced, the utilization rate is improved, the filling quality is guaranteed, and the reliability of the filling system is improved; the tailing slurry filling technology can achieve the 24-hour tailing intake and 24-hour tailing supply optimal working system of the deep-cone thickener, alternative tailing intake and alternative filling of the two tailing chambers are carried out, thereby improving the working efficiency.

Description

technical field [0001] The invention relates to the technical field of tailing sand filling, in particular to a tailing sand slurry filling system and process. Background technique [0002] Tailings filling mining technology is a new technology for modern mining economy and environmental protection. Compared with other mining methods, it has the advantages of simple process, low cost, high recovery rate, safe operation, environmental protection, etc., and can recover mining under complex geological conditions. Therefore, more and more attention has been paid to filling mining technology, which is constantly innovating and developing. At present, the tailings are regarded as a kind of prospective resource and stored underground, and the secondary development and utilization of resources will be carried out when the technology and economy mature in the future. At present, the concentration and dehydration of tailings slurry in the process of tailings filling system often occu...

AI Technical Summary

Problems solved by technology

[0007] 1. After the low-concentration slurry enters the sand bin, it is also a flocculation and settlement process, but there is no "self-dilute system" for tailings slurry and a more reasonable flocculant addition system inside the sand bin. The addition of flocculant in the sand bin mainly Add directly at the feed port

Therefore, the flocculation and settlement effect of the sand bin is not good, which will cause the overflow water to be turbid, and the overflow water will take away a large amount of fine particles, which will eventually lead to the classification of the tailings. Stockpiling in the tailings pond cannot form a dry stall, which will cause certain safety hazards to the tailings pond

[0008] 2. In addition, due to the loss of tailings, the utilization rate of tailings is reduced, and the sand settling efficiency of tailings is greatly reduced, which ultimately affects the filling efficiency

However, during the sand discharge process at the bottom of the thickener, due to the imbalance between the incoming and outgoing materials, the concentration of the sand discharge is relatively large, and usually the concentration of the sand discharge is getting lower and lower. The large fluctuation of the sand discharge concentration leads to inaccurate addition of subsequent cement additions. , that is, the inaccurate addition of lime-sand ratio will ultimately affect the filling quality

[0011] 2. The high-efficiency deep cone thickener is a mechanical device. Since it is a mechanical device, it must be overhauled or malfunctioned. If there is only one sand storage device for the thickener, then once the thickener fails, it needs to be repaired and emptied. When the tailings are used, the thousands of cubic meters of tailings slurry in the thickener bin will have nowhere to drain

The reliability of the filling system is affected to a certain extent

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