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Lead-zinc smelting slag based geopolymer gelling material and preparation method thereof

A technology for polymer glue and smelting slag, applied in cement production and other directions, can solve problems such as less research, and achieve the effect of protecting the ecological environment, improving economic benefits and social benefits.

Inactive Publication Date: 2016-05-11
燕京理工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the preparation of geopolymer cementitious materials using lead-zinc smelting slag as the main raw material.

Method used

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  • Lead-zinc smelting slag based geopolymer gelling material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: take lead-zinc smelting slag as main raw material geopolymer composition and its mass percentage content are: lead-zinc smelting slag 72wt.%, fly ash 5wt.%, composite alkali activator (sodium silicate and Sodium hydroxide is prepared by mixing 8wt.% of sodium hydroxide at a ratio of 1:1, 3wt.% of sulfate activator, 1wt.% of aluminate activator (sodium aluminate), and 11wt.% of deionized water.

[0027] The preparation steps of the above-mentioned lead-zinc smelting slag base polymer are as follows:

[0028] In the first step, the lead-zinc smelting slag and fly ash are dried separately until the moisture content is less than 1wt.%, and then placed in a ball mill for pre-grinding until the specific surface area is 400m 2 / kg or more, then mix well and add sulfate activator and aluminate activator to grind together until the specific surface area is 500m 2 / kg or more, the ball mill mixture is obtained. Dissolving the composite base activator in deionized ...

Embodiment 2

[0031] Embodiment 2: take the lead-zinc smelting slag as main raw material geopolymer composition and its mass percentage content are: lead-zinc smelting slag 65wt.%, fly ash 8wt.%, composite alkali activator (sodium silicate and Potassium hydroxide is mixed according to the ratio of substance ratio 1:2) 8wt.%, sulfate activator 6wt.%, aluminate activator (calcium aluminate) 1wt.%, deionized water 12wt.%.

[0032] The preparation steps of the above-mentioned lead-zinc smelting slag base polymer are as follows:

[0033] In the first step, the lead-zinc smelting slag and fly ash are dried separately until the moisture content is less than 1wt.%, and then placed in a ball mill for pre-grinding until the specific surface area is 400m 2 / kg or more, then mix well and add sulfate activator and aluminate activator to grind together until the specific surface area is 500m 2 / kg or more, the ball mill mixture is obtained. Dissolving the composite base activator in deionized water to ...

Embodiment 3

[0036] Embodiment 3: take lead-zinc smelting slag as main raw material geopolymer composition and its mass percentage content are: lead-zinc smelting slag 65wt.%, fly ash 10wt.%, composite alkali activator (sodium silicate and Calcium hydroxide is prepared by mixing (1:1) 10wt.%, sulfate activator 4wt.%, aluminate activator (potassium aluminate) 1wt.%, deionized water 10wt.%.

[0037] The preparation steps of the above-mentioned lead-zinc smelting slag base polymer are as follows:

[0038] In the first step, the lead-zinc smelting slag and fly ash are dried separately until the moisture content is less than 1wt.%, and then placed in a ball mill for pre-grinding until the specific surface area is 400m 2 / kg or more, then mix well and add sulfate activator and aluminate activator to grind together until the specific surface area is 500m 2 / kg or more, the ball mill mixture is obtained. Dissolving the composite base activator in deionized water to prepare a solution;

[0039] ...

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Abstract

The invention discloses a lead-zinc smelting slag based geopolymer gelling material and a preparation method thereof and belongs to the technical field of geopolymer. The material is composed of, by mass, 65-72 wt.% of lead-zinc smelting slag, 5-10 wt.% of coal ash, 8-15 wt.% of composite alkali activator, 3-6 wt.% of sulfate activator, 1-3 wt.% of aluminate activator and 10-14 wt.5 of deionized water. The preparation method includes: respectively drying and grinding lead-zinc smelting slag and coal ash, and mixing well with a sulfate activator and an aluminate activator before joint grinding to obtain a ball-milled mixture; adding a composite alkali activator solution into the ball-milled mixture, stirring well, forming, and maintaining to obtain the material. The preparation method is simple, low in energy consumption and free of pollution in the preparation process, and geopolymer has good gelling performance, mechanical performance, corrosion resistance, wear resistance and dry shrinkage resistance.

Description

technical field [0001] The invention belongs to the technical field of geopolymers, and in particular relates to a lead-zinc smelting slag-based polymer gelling material and a preparation method thereof. technical background [0002] Geopolymer (Geopolymer) was first proposed by French material scientist Joseph Davidovits in 1978. It is a new type of inorganic polymer gelling material produced by polycondensation of silicon-aluminum raw materials. Its basic structure is silicon-oxygen tetrahedron and Alumina-oxygen tetrahedrons are connected by bridge-oxygen bonds to form a three-dimensional network structure. Compared with ordinary Portland cement, this structure has low shrinkage and low thermal conductivity, good wear resistance, rapid hardening and early setting. It can be widely used in construction, mining, chemical industry, road engineering and nuclear industry, etc. Geopolymers usually use industrial solid waste (with aluminosilicate as the main component) as the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24
CPCC04B7/243C04B12/005Y02P40/10
Inventor 孙双月
Owner 燕京理工学院
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