Method for improving flowability of milltailings and application of method

A fluidity and tailings technology, which can be used in earth-moving drilling, filling, safety devices, etc., can solve problems such as the cumbersome preparation method of enhanced tailings mortar, improve enterprise and social economic benefits, improve strength, and improve slurry concentration. Effect

Inactive Publication Date: 2018-02-23
TONGLING NON FERROUS METAL GROUP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the preparation method of the existing method for enhancing the fluidity of tailing mortar is cumbersome

Method used

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  • Method for improving flowability of milltailings and application of method

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Embodiment 1

[0012] Embodiment 1: A method for enhancing the fluidity of tailings, which includes the following steps: (1), configuring a sodium carboxymethyl cellulose solution with a mass fraction of 0.1%; (2), preparing a carboxymethyl cellulose solution with a mass fraction of 0.1% The sodium methyl cellulose solution is added to the sand silo and fully mixed with the sand liquid. The addition amount of the sodium carboxymethyl cellulose solution is 30kg / m 3 .

Embodiment 2

[0013] Embodiment 2: A method for enhancing the fluidity of tailings, which includes the following steps: (1), configuring a sodium carboxymethyl cellulose solution with a mass fraction of 0.1%; (2), preparing a carboxymethyl cellulose solution with a mass fraction of 0.1% The sodium methyl cellulose solution is added to the sand silo and fully mixed with the sand liquid. The addition amount of the sodium carboxymethyl cellulose solution is 40kg / m 3 .

Embodiment 3

[0014] Embodiment 3: A method for enhancing the fluidity of tailings, which includes the following steps: (1), preparing a sodium carboxymethyl cellulose solution with a mass fraction of 0.1%; (2), preparing a carboxymethyl cellulose solution with a mass fraction of 0.1% The sodium methyl cellulose solution is added into the sand silo and fully mixed with the sand liquid. The addition amount of the sodium carboxymethyl cellulose solution is 60kg / m 3 .

[0015] Sodium carboxymethyl cellulose is generally used as a suspending agent in mud retaining wall drilling, but the drilling slag will be suspended. The applicant took advantage of this characteristic of sodium carboxymethyl cellulose and applied it as an additive for tailings mortar. After many tests on site, it was believed that a dispersant solution of 0.1% mass concentration was ideal, mainly because it was easy to distribute evenly, Thereby, the dispersant solution is fully mixed with the sand liquid in the sand bin.

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Abstract

The invention discloses a method for improving flowability of milltailings and application of the method. The method comprises the following steps: (1) preparing a 0.1% sodium carboxy methyl cellulosesolution in mass fraction; and (2) putting the 0.1% sodium carboxy methyl cellulose solution into a sand cabin, and sufficiently mixing with a sand liquid, wherein the addition amount of the sodium carboxy methyl cellulose solution is 30-60kg/m<3>. The method has the beneficial effects that due to mixing of the 0.1% sodium carboxy methyl cellulose solution with the sand liquid, the flowability ofmaterial slurry is improved, then the concentration of the material slurry is increased, the water drainage expense is reduced, the filling strength is improved, and the method has great significances for both the company and social and economic benefits.

Description

technical field [0001] The invention relates to the field of mining, in particular to a method for tailings fluidity and its application. Background technique [0002] With the increasing requirements of environmental protection, tailings are generally used to fill goafs in underground mining. This not only reduces tailings emissions, but also facilitates ground pressure control. Among them, the fluidity of the slurry is a very key indicator. The improvement of the fluidity is conducive to improving the slurry concentration, reducing the pipe blockage accident, improving the strength of the backfill body, and reducing the drainage cost. Therefore, high-concentration filling has become the trend of underground filling in mines. Chinese Invention Patent Publication No. CN1039735 discloses a high-concentration full-tail mortar additive, using a flow agent and a foaming agent as a composite additive for preparing a high-concentration full-tail mortar with a solid content of not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00
CPCE21F15/005
Inventor 郑攻关桂旺华方志甫袁世伦陈金平徐刚姚志伟韦章能谢经鹏覃星朗
Owner TONGLING NON FERROUS METAL GROUP CORP
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