Dehydrated tailing precise blending and forced homogenizing preparation structural flow filling technology and filling system

Abstract

The invention provides a dehydrated tailing precise blending and forced homogenizing preparation structural flow filling technology and filling system. The filling system is composed of a feeding andmetering subsystem, a stirring and preparing subsystem, a slurry conveying and filling subsystem and an automatic control system. The feeding and metering subsystem comprises a dehydrated tailing feeding and metering system, a concentrated water feeding and metering system and a cementing agent feeding and metering system. The filling technology realizes advanced material preparation, precise metering and forced activation cycle preparation and storing offset adjustment two-section stirring. The filling material ratio and filling slurry mass concentration can be accurately controlled, high-concentration homogeneous steady-state structural flow filling slurry is prepared, and the filling slurry preparation quality and filling cost are controlled. The technology and the system have strong adaptability to mining of unbalanced mines and can be used for mines with mechanically dehydrated tailing, tailing pond sand and the like as aggregates, the construction investment is saved, the periodis short, and the technology and the system are applicable to filling and station establishment of mines in various scales.

Description

technical field [0001] The invention relates to the technical field of mine filling, in particular to a structured flow filling process and a filling system for preparing dehydrated tailings by means of forced homogenization of precise ingredients. Background technique [0002] Tailings filling can not only improve resource utilization, prevent surface subsidence, but also reduce the discharge of solid waste to the surface. It is an effective way to make full use of tailings resources, realize land saving, energy saving, environmental protection, and waste utilization. Therefore, most underground mines Tailings filling method is adopted. [0003] The tailings filling system is mainly composed of the feed end (that is, the feed end controls the amount of material added), the mixer equipment, and the measuring tube (the measuring tube is installed at the rear end of the mixing equipment and extends into the underground goaf) and other parts; enter the mixer There are three ki...

AI Technical Summary

Problems solved by technology

[0005] On-line flow (pipeline flowmeter, belt nuclear scale, etc.) metering and concentration monitoring are greatly affected by changes in material chemical properties and feeding stability, and cannot accurately measure and control the mix ratio of filling materials and the mass concentration of filling slurry

Due to the shortcomings of short homogenization time and poor quality of continuous discharge and stirring preparation, the transient error caused by unstable feeding metering cannot be adjusted, resulting in large fluctuations in the lime-sand ratio and mass concentration of the filling slurry.

Slurry discontinuous preparation equipment can not discharge material continuously, can not realize the continuous delivery of slurry, it will cause dissatisfaction with the pipeline flow, and the pipeline wears quickly; it will also form an air gap in the transmission pipeline, causing accidents such as pipe burst and blockage

Bin-type tailings thickener, the underflow concentration is limited, and the sand concentration fluctuates greatly, making it difficult to prepare stable high-concentration filling slurry

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