Ionic type rare earth in-situ mineral leaching anti-crack and anti-seepage grouting material and preparation method thereof

An ionic rare earth and grouting material technology, applied in mining equipment, earthwork drilling, shaft equipment, etc., can solve problems such as bedrock floor crack leakage, soil and water pollution, waste of rare earth resources, etc., to improve the density and strength, long storage time, fine particle size and easy dispersion effect

Pending Publication Date: 2022-07-22
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that a large amount of leachate leaks during the mining process of the in-situ leaching process, wastes precious rare earth resources, and causes serious pollution to the surrounding soil and water bodies of the mining area, and provides a kind of fluidity and permeability. It is an anti-crack and anti-seepage grouting material that can be effectively used in the current in-situ leaching process of ion-type rare earth ore, and can solve the crack leakage of bedrock floor

Method used

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  • Ionic type rare earth in-situ mineral leaching anti-crack and anti-seepage grouting material and preparation method thereof
  • Ionic type rare earth in-situ mineral leaching anti-crack and anti-seepage grouting material and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] An ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material is composed of the following components in parts by weight: 40 parts of waste tailings fine waste residue powder, 15 parts of fly ash, fine ore powder (nano silicon dioxide powder) 25 parts, 30 parts of water-based epoxy resin emulsion, 4 parts of activator (solid sodium methyl silicate, particle size 150 mesh) and 2.5 parts of activator;

[0024] Wherein, the activator is water glass whose modulus is adjusted at 1.6±0.1, and its solid content is 38%.

[0025] The preparation method of the above-mentioned ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material comprises the following steps:

[0026] Step 1: After grinding and activating the fine waste slag and fly ash of waste tailings, add fine ore powder and activator, stir evenly, then heat to 180°C for activation, and cool for later use;

[0027] In step 2, the water-based epoxy resin emulsion and the ac...

Embodiment 2

[0029] An ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material is composed of the following components in parts by weight: 50 parts of waste tailings fine waste residue powder, 10 parts of fly ash, fine ore powder (nano silicon dioxide powder) 30 parts, 20 parts of water-based epoxy resin emulsion, 5 parts of activator (solid sodium methyl silicate, particle size 200 mesh) and 2 parts of activator;

[0030] Wherein, the activator is water glass whose modulus is adjusted at 2.1±0.1, and its solid content is 32%. .

[0031] The preparation method of the above-mentioned ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material comprises the following steps:

[0032] Step 1: After grinding and activating the fine waste residue and fly ash of waste tailings, add fine ore powder and activator, stir evenly, then heat to 200°C for activation, and cool for later use;

[0033] In step 2, the water-based epoxy resin emulsion and th...

Embodiment 3

[0035] An ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material is composed of the following components in parts by weight: 30 parts of waste tailings fine waste residue powder, 20 parts of fly ash, and 20 parts of fine ore powder (nano calcium carbonate powder) parts, 40 parts of water-based epoxy resin emulsion, 3 parts of activator (solid sodium methyl silicate, particle size 100 mesh) and 3 parts of activator;

[0036] Wherein, the activator is water glass whose modulus is adjusted at 1.2±0.1, and its solid content is 45%.

[0037] The preparation method of the above-mentioned ionic rare earth in-situ leaching anti-cracking and anti-seepage grouting material comprises the following steps:

[0038] Step 1: After grinding and activating the fine waste residue and fly ash of waste tailings, add fine ore powder and activator, stir evenly, then heat to 160°C for activation, and cool for later use;

[0039] In step 2, the water-based epoxy resin emu...

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Abstract

The invention belongs to the technical field of ion type rare earth in-situ mining, and particularly relates to an ion type rare earth in-situ mineral leaching anti-crack and anti-seepage grouting material which comprises the following components: waste tailing fine waste residue powder, fly ash, fine mineral powder, water-borne epoxy resin emulsion, an activating agent and an exciting agent. The anti-cracking and anti-seepage grouting material prepared by fully utilizing clay minerals massively existing in an ion rare earth mining area, taking waste tailings fine waste residues, fly ash and fine mineral powder as raw materials, performing grinding activation and high-temperature activation and taking the waterborne epoxy resin as a carrier has the advantages of good stability, long storage time and the like, and has a good application prospect. Meanwhile, the permeability, the setting time, the compressive strength and the like of the grouting material are adjustable, and the grouting material can be widely applied to ion type rare earth mine bedrock bottom plate crack seepage-proofing grouting engineering.

Description

technical field [0001] The invention belongs to the technical field of in-situ mining of ionic rare earths, in particular to an anti-cracking and anti-seepage grouting material for in-situ leaching of ionic rare earths. Background technique [0002] The ionic rare earth deposits are hosted in the granite weathering crust. The granite rich in rare earth elements is dissolved and migrated under the long-term external geological action. Rare earth elements are decomposed from easily weatherable rare earth minerals and minerals containing rare earth, and are adsorbed by clay minerals in an ionic state. Since rare earth elements are adsorbed on the surface of clay minerals in an ionic state, these rare earth elements in an ion adsorption state can be directly exchanged with electrolyte solutions such as acids, alkalis, and salts. It is the most efficient and economical mining method without stripping the surface covering soil or excavating the mining body. However, in the exten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/38C22B59/00C22B3/02
CPCE21D11/10E21D11/38C22B59/00C22B3/02
Inventor 游胜勇赵朝委李玲崔红敏方洁夏冬冬董晓娜徐长江王春花
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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