Automatic separation device for medium and fine-grained sludge in tailings conveying main pipe

Abstract

The invention discloses an automatic separating device for fine-sized slime in tailings conveying manifolds and belongs to mine tailings grading and conveying equipment. At least one guiding-out mechanism composed of a door-shaped support and a leading-out pipe is arranged on any tailings conveying manifold, each leading-out pipe is fixed on the corresponding door-shaped support and communicated with the corresponding tailings conveying manifold and a fine grain conveying pipe in a connected manner respectively, a proportion flow limiting mechanism is arranged in a horizontal pipe section at the tail of each leading-out pipe, and the middle of each fine grain conveying pipe is supported by multiple supporting frames while the head of the same extends into a mine pit. Each leading-out pipe composed of a vertical pipe, a first bypass inclined pipe, a second bypass inclined pipe and a connecting elbow is adopted, and pipe-diameter ratio and tailings slurry flow speed are designed reasonably, so that separating of fine-sized slime in the tailings conveying manifold can be realized without newly-added power, energy resources are saved, the fine-sized slime entering a tailings pond is reduced, grade matching of tailings entering the tailings pond is improved, gradient of a dry beach at a flood regulation section is increased, and safety superelevation and flood regulation height floor prevention indicators of the tailings pond are enabled to meet safety requirements.

Description

technical field [0001] The invention belongs to mine tailings grading conveying equipment, in particular to a device for grading coarse and fine particles in the process of tailings conveying. Background technique [0002] After the ores mined by metal or non-metal mines are sorted by the concentrator, the discharged tailings need to be sent to the tailings pond for storage through the conveying device. Therefore, the tailings pond is an important production infrastructure for mining enterprises, and the safe operation of the tailings pond is crucial. important. At present, the tailings are concentrated and graded and filtered to produce tailings slurry. The tailings slurry enters the slurry bin of the first-level total sand pumping station, and is controlled by the gate in the slurry bin. Two 10 / 8ST-AH slurry The pumps are connected in series to form a group, and three of the six groups (three groups for production and three groups for standby) are used for transportation,...

AI Technical Summary

Problems solved by technology

Due to the improvement of ore dressing process in recent years, extremely lean ore with fine particle size has been selected, which has led to a large increase in the fine particle content of mine tailings in storage. The size composition of tailings in storage is unreasonable. Slowing down and attenuating extremely fast, it is difficult to meet the two important flood control indicators of the tailings pond's safety super height and flood control height. The safety and stability of the tailings pond dam body is poor, which directly affects mine production and endangers the personal and property safety of downstream residents. However, there is no device for separating fine-grained sludge in the tailings conveying industry, so it is very necessary and practical to design an automatic separation device for fine-grained sludge from the tailings conveying main pipe

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