Micro-fine particle high-silicon tailings grouting material

A technology of grouting materials and fine particles, which is applied in the field of grouting materials, can solve the problems of high pollution, poor slurry stability, and high cost, and achieve the effects of good slurry stability, high compressive strength, and low bleeding rate

Active Publication Date: 2019-08-09
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement-based grouting material is currently the most widely used grouting material. It has the advantages of adjustable fluidity, setting time, strong adaptability, and simple and convenient construction technology. Poor, easy to precipitate water and other deficiencies, and because of the large diameter of cement particles, the injection capacity is often limited to fine cracks
The consumption of cement in the grouting process of cement-based materials is large, the cost is high, and the cement itself has problems such as high energy consumption and high pollution in the production process, which is not suitable for the requirements of contemporary sustainable development

Method used

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  • Micro-fine particle high-silicon tailings grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A microfine-grained high-silicon tailings grouting material is prepared by mixing the following raw materials in parts by weight: 90 parts of high-silicon tailings, 7 parts of lime, 3 parts of gypsum, 1 part of calcium chloride and 60 parts of water.

[0020] The high-silicon tailings are ground by a planetary ball mill, the grinding time is 40 minutes, and the corresponding specific surface area is 650m 2 / kg.

[0021] After mixing the raw materials in parts by weight, they are evenly stirred to obtain the fine-grained high-silicon tailings grouting material.

Embodiment 2

[0023] A grouting material for fine-grained high-silicon tailings, which is prepared by mixing the following raw materials in parts by weight: 90 parts of high-silicon tailings, 5 parts of lime, 2 parts of gypsum, 3 parts of calcium chloride and 60 parts of water.

[0024] The high-silicon tailings are ground by a planetary ball mill, the grinding time is 40 minutes, and the corresponding specific surface area is 650m 2 / kg.

[0025] After mixing the raw materials in parts by weight, they are evenly stirred to obtain the fine-grained high-silicon tailings grouting material.

Embodiment 3

[0027] A fine-grained high-silicon tailings grouting material, which is made by mixing the following raw materials in parts by weight: 50 parts of high-silicon tailings, 5 parts of lime, 4 parts of gypsum, 2 parts of calcium chloride, and 40 parts of granulated blast furnace slag and 60 parts of water.

[0028] The high-silicon tailings are ground by a planetary ball mill, the grinding time is 80 minutes, and the corresponding specific surface areas are 720m 2 / kg.

[0029] After mixing the raw materials in parts by weight, they are evenly stirred to obtain the fine-grained high-silicon tailings grouting material.

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Abstract

The invention discloses a micro-fine particle high-silicon tailings grouting material. The material is obtained by mixing the following raw materials of high-silicon tailings, 1-10% of lime, 1-10% ofgypsum, 1-5% of calcium chloride, granulated blast furnace slag and water, wherein the ratio of the water weight to the total weight of the high-silicon tailings, the lime, the gypsum, the calcium chloride and the granulated blast furnace slag is 0.5-1.5. Accordingly, the micro-fine particle high-silicon mine tailings serve as the main raw material, the lime, the gypsum and the calcium chloride are adopted as activators, the granulated blast furnace slag serves as a performance adjusting agent, mechanochemical and chemical activation methods are adopted, the low-cost green grouting material isobtained, and the grouting material has the advantages of being high in compressive strength, low in bleeding rate, good in grout stability and the like.

Description

technical field [0001] The invention relates to the field of grouting materials, in particular to a fine-grained high-silicon tailings grouting material. Background technique [0002] Mine tailings are solid wastes that are discharged after the ore is crushed and the useful components are selected by the concentrator under specific economic and technical conditions. It has the characteristics of fine particle size, large quantity, pollution and harm to the environment. my country is a big mining country, but the grade of most mine resources is low, and a large amount of tailings are discharged in the beneficiation process. With the improvement of the utilization of mineral resources, the mineable grade of ore decreases correspondingly, and the amount of tailings is also increasing. Stacking tailings in tailings ponds is still the main way to dispose of tailings at present. Not only does it occupy a large amount of land, pollute the environment of the mining area and surround...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/006C04B2111/00017C04B22/064C04B22/124C04B22/143C04B18/141
Inventor 吴蓬吕宪俊姚耿王强王俊祥侯铭昱
Owner SHANDONG UNIV OF SCI & TECH
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