Weak cyclone slurry making method for graded tailings filling type vertical sand silo

A vertical sand bin and slurry-making technology, which is applied in the fields of filling, earthwork drilling, sustainable waste treatment, etc., can solve the problems of unstable slurry-making process, affecting the effect, and short service life, so as to save electricity and water Consumption, reduce the amount of cement, reduce the effect of infrastructure investment

Inactive Publication Date: 2018-11-20
武宣县科学技术情报研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the action of high-pressure wind and water, the stainless steel cap-shaped nozzle is easy to wear and has a short service life. The nozzle opening is seriously enlarged in about 2 months on average, which affects the effect; at the same time, the enlarged nozzle opening is easily blocked by tailing mortar. The number of nozzles operating at the same time is reduced, resulting in insufficient pulping strength, and the saturated sedimentary sand is not easy to be loosened and fluidized, so that the pulping process is extremely unstable, easy to block the pulping outlet, and the concentration is relatively low, about 65%~70 %

Method used

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  • Weak cyclone slurry making method for graded tailings filling type vertical sand silo
  • Weak cyclone slurry making method for graded tailings filling type vertical sand silo
  • Weak cyclone slurry making method for graded tailings filling type vertical sand silo

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Effect test

Embodiment 1

[0037] see Figures 1 to 4 Shown, a kind of classification tailings filling vertical sand bin weak swirling slurry making method, described slurry comprises the following steps:

[0038] (1) After the tailings of the dressing plant pass through the cyclone group, the graded tailings are formed, and the effective height of the grit chamber is determined to be ≥ 10m. The diameter of the grit chamber of the cyclone is 20, and the concentration is about 35%. The tailing sand settles behind the sand bin, and its concentration is 85% at the bottom of the sand bin. During the filling process, the high-concentration tailing sand at the bottom of the sand bin is used for local weak slurrying to increase the preparation concentration of the mortar and avoid damage to the entire sand bin. Perform strong pulping; at the same time, the tailings are continuously supplied and settled, which can supplement the tailings of the sand bin. The concentration of tailings at the bottom of the sand b...

Embodiment 2

[0047] see Figures 1 to 4 Shown, a kind of classification tailings filling vertical sand bin weak swirling slurry making method, described slurry comprises the following steps:

[0048] (1) The tailings of the dressing plant will form graded tailings after passing through the cyclone group, and it is determined that the effective height of the grit chamber is ≥ 10m. The diameter of the cyclone grit nozzle is 25, and the concentration is about 40%. The tailing sand settles behind the sand bin, and its concentration is 90% at the bottom of the sand bin. During the filling process, local weak slurrying of high-concentration tailings at the bottom of the sand bin is used to increase the preparation concentration of the mortar and avoid damage to the entire sand bin. Perform strong pulping; at the same time, the tailings are continuously supplied and settled, which can supplement the tailings of the sand bin. The concentration of tailings at the bottom of the sand bin is kept abov...

Embodiment 3

[0057] see Figures 1 to 4 Shown, a kind of classification tailings filling vertical sand bin weak swirling slurry making method, described slurry comprises the following steps:

[0058] (1) After the tailings of the dressing plant pass through the cyclone group, the graded tailings are formed, and the effective height of the grit chamber is determined to be ≥ 10m. The diameter of the grit chamber of the cyclone is 28, and the concentration is about 38%. The tailing sand settles behind the sand bin, and its concentration is 88% at the bottom of the sand bin. During the filling process, local weak slurrying of high-concentration tailings at the bottom of the sand bin is used to increase the preparation concentration of the mortar and avoid damage to the entire sand bin. Perform strong pulping; at the same time, the tailings are continuously supplied and settled, which can supplement the tailings of the sand bin. The concentration of tailings at the bottom of the sand bin is kep...

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Abstract

The invention relates to the technical field of tailings slurry making and in particular relates to a weak cyclone slurry making method for a graded tailings filling type vertical sand silo. The method comprises the following steps: firstly, filling a dead zone of a stope to a certain height with slag to obtain a residual dead zone, measuring the height of the residual dead zone, conforming the highest point position, mounting a hollow anchor rod at the highest point, and mounting a filling pipe on the hollow anchor rod; mounting a first dehydrating pipe and a dehydrating pipe at the highest point and mounting a third dehydrating pipe and a second dehydrating pipe from top to bottom according to height; plugging a port between the residual dead zone and an access or a linking taxiway and conveying filling slurry to the filling pipe to achieve top tight filling of the residual dead zone. The method provided by the invention has the characteristics that top tight filling on the dead zoneof the stope can be carried out effectively, and the strength of the dead zone of the stope can be guaranteed effectively.

Description

technical field [0001] The invention relates to the technical field of tailings slurry making, in particular to a method for making graded tailings filling vertical sand bins with weak swirling flow, which is suitable for mines such as gold mines, iron mines, copper mines, coal mines, and lead-zinc mines. Upper mined-out area filling. Background technique [0002] For underground mines, as modern society has higher and higher requirements for environmental protection, and most of the shallow ore bodies of underground metal mines have been mined, and the mining site is extended to the deep part, the filling mining method is due to the need to ensure safety. It has the dual functions of environmental protection and improving ore recovery rate, and has been more and more widely used in nonferrous metals and gold mines. In particular, deep deposits have the characteristics of "three highs", that is, high stress, high ground pressure, and high ground temperature, and filling tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00C04B28/00C04B18/12
CPCC04B18/12C04B28/00E21F15/005Y02W30/91
Inventor 覃尚幸
Owner 武宣县科学技术情报研究所
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