Fine-fraction tailing paste-like filling system of vertical sand silo

Abstract

The invention provides a paste-like filling system for fine-grained tailings of a vertical sand silo, which is characterized in that all-tailing slurry produced by a mine dressing plant is conveyed to a cyclone through a slurry pump to be classified, and underflow of the cyclone is dehydrated through a high-frequency vibration dehydration screen to obtain coarse-grained dry sand; fine-fraction tailings overflowed by the hydrocyclone are pumped to a central feeding barrel of a vertical sand silo of a filling station and are mixed with a flocculating agent conveyed by a flocculating agent adding device, the fine-fraction tailings are rapidly flocculated and settled in the vertical sand silo, and overflow water is conveyed to a mine dressing plant to serve as production water; the dense and qualified fine-fraction tailing slurry in the vertical sand silo automatically flows to the stirring system after being activated by wind-water slurry making, and is mixed and stirred together with the conveyed cementing material and overflow water in the stirring system, and the prepared qualified filling slurry automatically flows to an underground filling site. The overflow fine-fraction tailings of the cyclone can be reasonably disposed, the service life of the tailings pond is prolonged, the construction cost of the tailings pond is saved, and the safety of an underground goaf is guaranteed.

Description

technical field [0001] The invention relates to the technical field of goaf filling, in particular to a fine-grain tailings-like paste filling system for a vertical sand bin. Background technique [0002] With the further mining of mines, the service life of the remaining storage capacity of most mine tailings ponds cannot meet the needs of mine development, and the approval of new tailings ponds is difficult and the process is cumbersome. Especially for gold mines, the tailings output rate is as high as more than 95%. How to dispose of these tailings and finally realize the "zero" discharge of tailings is to adapt to the construction of national green mines and waste the solid waste of tailings. Basic requirements for resource utilization and harmless disposal of waste. In the past, the classified tailings filling in the mine was to use the cyclone to classify the tailings. After classification, the coarse-grained tailings were filled in the underground goaf with the verti...

AI Technical Summary

Problems solved by technology

[0003] How to use the fine-grained tailings classified by the cyclone for many existing mining enterprises that have been established for a long time, that is, to solve the discharge of the fine-grained tailings and realize the disposal of the fine-grained tailings, so as to To achieve the technical problems of prolonging the service life of the tailings pond and saving the construction cost of the tailings pond, the present invention provides a fine-grained tailings-like paste filling system for a vertical sand bin

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