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Soft soil curing agent and preparation method thereof

A curing agent and soft soil technology, applied in the field of environmental restoration, can solve problems such as threats to the health of mine employees, dust pollution, and increased production costs, and achieve excellent consolidation performance, high compressive and flexural strength, and easy construction Effect

Active Publication Date: 2021-01-01
肇庆市武大环境技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of soft soil curing agent, because of its fine particle size, it will cause a certain degree of dust pollution during use, which poses a great threat to the health of mine employees, especially pneumoconiosis
At present, soft soil curing agents are mainly in powder form, and the research on soft soil curing agents is still in its infancy. The production of soft soil curing agents with pure industrial raw materials will inevitably increase its production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Activation of tailings: uniformly mix caustic soda and tailings in Table 1 at a ratio of 0.8:1, then perform calcination and activation treatment at 600°C for 2 hours to obtain activated tailings;

[0030] (2) According to the activated mineral material: water: SJ-30 liquid resin: ethanol: nitric acid: glass fiber mass ratio = 60: 13.8: 20: 3: 3: 0.2, uniformly mix under the condition of continuous stirring, that is, the soft soil is solidified agent;

[0031] (3) Use the obtained soft soil curing agent to solidify the tailings in the above table 1. The ratio of tailings to soft soil curing agent is 96:4, and the resulting mixed material is prepared into a 5*5 cylindrical test block at a temperature of 20 ° C. , the humidity is 92% under the condition of curing for a period of time, and its unconfined compressive strength test is carried out. The test results are shown in Table 2:

[0032] Table 2 Unconfined compressive strength of test blocks obtained by different...

Embodiment 2

[0036] (1) Activation of tailings: uniformly mix caustic soda and tailings in Table 1 at a ratio of 1:1.5, then perform calcination and activation treatment at 600°C for 2 hours to obtain activated tailings;

[0037] (2) According to the activated mineral material: water: SJ-30 liquid resin: ethanol: nitric acid: glass fiber = 70: 13.9: 10: 2: 4: 0.1, carry out uniform mixing under the condition of continuous stirring to obtain the soft soil curing agent;

[0038] (3) Use the obtained soft soil curing agent to solidify the tailings in the above table 1. The ratio of tailings to soft soil curing agent is 97:3, and the resulting mixed material is prepared into a 5*5 cylindrical test block at a temperature of 20 ° C. , the humidity is 92% under the condition of curing for a period of time, and its unconfined compressive strength test is carried out. The test results are shown in Table 2:

[0039] Table 3 Unconfined compressive strength of test blocks obtained by different curing ...

Embodiment 3

[0043] (1) Activation of tailings: uniformly mix caustic soda and tailings in Table 1 at a ratio of 1.5:1, then perform calcination and activation treatment at 600°C for 2 hours to obtain activated tailings;

[0044] (2) According to the activated mineral material: water: SJ-30 liquid resin: ethanol: nitric acid: glass fiber mass ratio = 60: 30.9: 4: 3: 2: 0.1, uniformly mixed under the condition of continuous stirring, that is, the soft soil is solidified agent;

[0045](3) Use the obtained soft soil curing agent to solidify the tailings in the above table 1. The ratio of tailings to soft soil curing agent is 96:4, and the resulting mixed material is prepared into a 5*5 cylindrical test block at a temperature of 20 ° C. , and the humidity is 92% under the condition of curing for a period of time, and its unconfined compressive strength test is carried out. The test results are shown in Table 4:

[0046] Table 4 Unconfined compressive strength of test blocks obtained by diffe...

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Abstract

The invention discloses a soft soil curing agent and a preparation method thereof. The soft soil curing agent comprises activated tailings, alcohol compounds, glass fibers, inorganic acid liquid, water, liquid resin and the like, and the activated tailings are obtained by calcining and activating tailings and an alkaline activation excitant. The soft soil curing agent is applied to soil solidification, and flying dust pollution is reduced; meanwhile, the compressive strength and breaking strength of a solidified body can be obviously improved, the solidified soil is not prone to cracking, theheavy metal stabilizing effect is good, construction is easy, the production cost is low, and in-situ harmless absorption of industrial tailings is effectively achieved, and the green production requirement of treating waste with waste is met.

Description

technical field [0001] The invention relates to a soft soil curing agent, in particular to a soft soil curing agent prepared with tailings as the main raw material, activated by high-temperature alkali melting, and alcohols, glass filaments, acids, liquid resins, water, etc., and also relates to its The preparation method belongs to the technical field of environmental restoration. Background technique [0002] In recent years, the rapid development of China's economy has benefited from the improvement of modern mining technology. However, the intensification of mining resources has left a large amount of tailings while obtaining the raw materials needed for people's life and production. Among them, siliceous-aluminum tailings are typical tailings, and their discharge volume ranks first among all tailings. The general characteristics of silica-alumina tailings are complex composition, fine particle size, large discharge, and some heavy metals and other elements. Due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B7/24C04B7/42C04B7/44
CPCC04B28/02C04B7/243C04B7/424C04B7/44C04B2111/00732C04B2111/00767C04B2103/0045C04B24/02C04B22/085C04B14/42Y02W30/91
Inventor 侯浩波张鹏举叶非华韩旭纪建业江俊锋李银生孙琪
Owner 肇庆市武大环境技术研究院
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