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Geopolymer gel material based on manganese slag and fly ash, and preparation method and application of geopolymer gel material

A technology of geopolymer and gel material, applied in the field of geopolymer gel material, can solve the problems of health hazards, waste of land, soil, air pollution, etc.

Pending Publication Date: 2018-12-07
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of fly ash piled up not only wastes land, but also causes serious pollution to the soil and the atmosphere, and brings harm to human health

Method used

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  • Geopolymer gel material based on manganese slag and fly ash, and preparation method and application of geopolymer gel material
  • Geopolymer gel material based on manganese slag and fly ash, and preparation method and application of geopolymer gel material
  • Geopolymer gel material based on manganese slag and fly ash, and preparation method and application of geopolymer gel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (1) Preparation of the mixed system of geopolymer gel material

[0060] First, the manganese slag and fly ash are mechanically ground to a particle size below 30 μm, and then the two are mixed evenly, wherein the weight ratio of manganese slag and fly ash is 1:9; 3wt% waterproofing agent, continue to stir, mix uniformly; Add activator aqueous solution, wherein, the add-on of activator accounts for 20wt% of the total weight of solid component and activator component, and the weight ratio of activator and water is 1.3:1, The weight ratio of NaOH and water glass in the activator is 2:1, and a mixture with a total amount of 2kg is prepared.

[0061] (2) Preparation of geopolymer gel material

[0062] Pour the mixed material into a 40mm×40mm×160mm triple mold, put it into a curing box, cure at a temperature of 80°C, and have a relative humidity of 25%. After curing for 12 hours, put it into 3d, 7d, and 14d to finally obtain manganese slag-powdered coal Ash-based geopolymer...

Embodiment 2

[0066] (1) Preparation of the mixed system of geopolymer gel material

[0067] First, the manganese slag and fly ash are mechanically ground to a particle size below 30 μm, and then the two are mixed evenly, wherein the weight ratio of manganese slag and fly ash is 2:8; 2wt% waterproofing agent, continue to stir, and mix uniformly; Add the aqueous solution of the activator, wherein the addition of the activator accounts for 20wt% of the total weight of the solid component and the activator component, and the weight ratio of the activator to water is 1.16:1, The weight ratio of NaOH and water glass in the activator is 2:1, and a mixture with a total amount of 2kg is prepared.

[0068] (2) Preparation of geopolymer gel material

[0069] With embodiment 1.

[0070] The compressive strength test was carried out, and the test results are listed in Table 5.

[0071] The gel material leaching toxicity test was carried out, and the test results are listed in Table 6.

Embodiment 3

[0073] (1) Preparation of the mixed system of geopolymer gel material

[0074] First, the manganese slag and fly ash are mechanically ground to a particle size below 30 μm, and then the two are mixed evenly, wherein the weight ratio of manganese slag and fly ash is 3:7; 2wt% waterproofing agent, continue to stir, and mix uniformly; Add the aqueous solution of the activator, wherein the addition of the activator accounts for 20wt% of the total weight of the solid component and the activator component, and the weight ratio of the activator to water is 1.16:1, The weight ratio of NaOH and water glass in the activator is 2:1, and a mixture with a total amount of 2kg is prepared.

[0075] (2) Preparation of geopolymer gel material

[0076] With embodiment 1.

[0077] The compressive strength test was carried out, and the test results are listed in Table 5.

[0078] The gel material leaching toxicity test was carried out, and the test results are listed in Table 6.

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Abstract

The invention discloses a geopolymer gel material prepared by taking manganese slag and fly ash as raw materials, and a preparation method and application of the geopolymer gel material. Based on a solid component and an excitation component, the composition comprises 65-85 wt% of the solid component and 15-35 wt% of the excitation component, and the composition further comprises a waterproof agent. The solid component is composed of fly ash or a mixture of manganese slag and fly ash, wherein the weight ratio of the manganese slag to the fly ash in the mixture is 1:(0.5-15). The excitation component is composed of an excitant. In a preparation process, secondary waste residues, waste water and waste gas are not generated, and safe greening implementation is realized. The geopolymer gel material has the advantages of rapid setting and early strength, moderate strength, simple process, low production cost, safety and effectiveness, good durability, and the like. The material can be usedin construction, civil engineering and rapid repair materials, and industrial solid waste reclamation is realized.

Description

technical field [0001] The invention belongs to the technical field of geopolymer gel materials, and in particular relates to a geopolymer gel material based on manganese slag and fly ash and its preparation method and application. Background technique [0002] The total production of electrolytic manganese in my country accounts for 98.6% of the global total, and nearly 80% of electrolytic manganese is produced from manganese carbonate ore. Due to the low average grade of manganese carbonate ore in my country, the weight ratio of concentrate produced by electrolytic manganese to electrolytic manganese slag is about 1:8. The annual discharge of manganese slag in our country is as high as about 8 million tons. A large amount of manganese slag not only occupies the stockpiling site, but also causes serious environmental pollution problems. It is reported that manganese slag pollutes the surrounding soil, surface water, and groundwater system under long-term weathering and lea...

Claims

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Application Information

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IPC IPC(8): C04B12/00C04B7/26C04B7/153
CPCC04B7/1535C04B7/26C04B12/005Y02P40/10
Inventor 韩凤兰王亚光
Owner BEIFANG UNIV OF NATITIES
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