Full tailing glue stuff slurry and preparation method thereof

A technology for cementing filling and filling slurry, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of mining waste residue settlement, increase filling cost, increase operating cost, etc., and simplify the preparation process. , The effect of improving process reliability and improving work reliability

Active Publication Date: 2017-08-11
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the prior art proposes a preparation method for filling slurry, this method has the following disadvantages: (1) Adding large particle mining waste residues to the filling slurry will cause uneven stirring of the filling slurry on the one hand. Stirring equipment complicates the preparation system, increases operating costs, and increases filling costs
[0005] (2) The mining waste slag added to the filling slurry needs to be crushed to less than 2cm. The size of the existing mining waste slag reaches 20cm before crushing, and the large size accounts for a large proportion. If the mining waste slag needs to be crushed to less than 2cm, two-stage crushing and One-stage screening system complicates the technological process, greatly increases operating costs, and directly increases filling costs
[0006] (3) The particles of mining wast

Method used

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Examples

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Example Embodiment

[0029] Example 1:

[0030] A full tailings cemented filler slurry is composed of cement and tailings, wherein the ratio of ash to sand is 1:4, the tailings are 20% low-concentration tailings slurry produced by beneficiation, and the prepared filler slurry has a concentration of 75%.

[0031] The preparation method of full tailings cemented filler slurry is as follows:

[0032] 1) The low-concentration tailings slurry produced by the dressing plant is thickened to 45% through a thickener, and then an alkaline medium is added to it, and the pH of the tailings slurry is adjusted to be neutral to obtain a neutral tailings slurry;

[0033] 2) Send 50% of the neutral tailings slurry to the tailings filter press system for pressure filtration treatment to obtain the filter press tailings slurry. After the press filter, the water content of the tailings slurry is 20%. The alkaline medium is preliminarily mixed with lime powder and Saturated medium made by mixing water;

[0034] 3) Feed the fil...

Example Embodiment

[0036] Example 2:

[0037] A full tailings cemented filler slurry is composed of cement and tailings, wherein the ratio of ash to sand is 1:8, the tailings are 20% low-concentration tailings slurry produced by beneficiation, and the prepared filler slurry has a concentration of 80%.

[0038] The preparation method of full tailings cemented filler slurry is as follows:

[0039] 1) Pass the low-concentration tailings slurry produced by the dressing plant to 58% through a thickener, and then add alkaline medium to it to adjust the pH of the tailings slurry to neutral to obtain a neutral tailings slurry;

[0040] 2) Send 60% of the neutral tailings slurry to the tailings filter press system for pressure filtration to obtain a filter press tailing slurry. After the press filter, the water content of the tailings slurry is 14%. The alkaline medium is preliminarily mixed with lime powder and Saturated medium made by mixing water;

[0041] 3) Feed the filter press tailings slurry and the remai...

Example Embodiment

[0043] Example 3:

[0044] A full tailings cemented filler slurry, composed of cement and tailings, in which the ratio of ash to sand is 1:7.6, and the tailings are 15% low-concentration tailings slurry produced by beneficiation. The prepared filler slurry has a concentration of 75.5% .

[0045] The preparation method of full tailings cemented filler slurry is as follows:

[0046] 1) The low-concentration tailings slurry produced by the dressing plant is thickened to 57% through a thickener, and then an alkaline medium is added to it, and the pH of the tailings slurry is adjusted to be neutral to obtain a neutral tailings slurry;

[0047] 2) Send 55% of the neutral tailings slurry to the tailings filter press system for filter press treatment to obtain the filter press tailings slurry. After the press filter, the water content of the tailings slurry is 16%. The alkaline medium is preliminarily mixed with lime powder and Saturated medium made by mixing water;

[0048] 3) Feed the filte...

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Abstract

The invention provides a full tailing glue stuff slurry and a preparation method thereof. The full tailing glue stuff slurry is prepared from the materials of cement and tailings, wherein the ratio of cement and sand is 1: 4-1: 10, and the stuff slurry is prepared by the steps of concentrating, pH value regulating, filter pressing, churning and mixing and the like, the stuffed slurry concentration by preparation is 70-80%. The full tailing glue stuff slurry is environmentally friendly and efficient, the stuff slurry by preparation is better in uniformity, by the preparation method, the cost of stuffing is significantly cut down, the preparation process of the stuff slurry is simplified, and the working reliability of the preparation system of stuff slurry is increased.

Description

technical field [0001] The invention relates to the technical field of filling and mining, in particular to a full tailings cemented filling slurry and a preparation method thereof. Background technique [0002] "Mining Handbook" printed for the seventh time in April 2010 by the Metallurgical Industry Press {China Edition Library CIP Data Hezi (2007) No. 147805, ISBN978-7-5024-0374-4} Volume 4 Second Chapter 10 details the filling mining method, its application fields and the filling materials used, etc. Its content does not involve non-metallic mines, especially phosphate mines, and more importantly, there is no part about filling with tailings in its content. Describe how the filling materials meet the national environmental protection standards and realize environmental protection filling. [0003] Chinese patent CN 102531482 A "a filling paddle for filling mining method and its preparation method" discloses a preparation method of mining filling slurry for the above pro...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B20/02C04B18/12
CPCC04B18/12C04B20/02C04B28/00Y02W30/91
Inventor 胡顺发刘大鹏王相凯陈兆荣牛明远
Owner BLUESTAR LEHIGH ENG INST CO LTD
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