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Ferronickel slag geopolymer and preparation method thereof

A geopolymer and ferronickel slag technology, applied in cement production, clinker production, etc., can solve the problems of large environmental pollution, low utilization rate, large discharge of nickel-iron slag, etc., and achieve reduction of environmental pollution, sufficient raw materials, Energy Saving Effect

Active Publication Date: 2016-07-20
UNIV OF JINAN
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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 mainly to provide a non-toxic and non-polluting ferronickel slag with low cost, simple process, large waste slag consumption, and aiming at the problems of large discharge of nickel-iron slag, low utilization rate, and great environmental pollution in my country. Geopolymer can realize resource utilization of ferronickel slag

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 100 parts of water glass, 0.1 part of hydrotalcite, 0.1 part of sodium rosinate and 0.1 part of fatty alcohol polyoxyethylene ether sodium sulfate into the stirring equipment, and stir evenly to obtain alkaline activator A1; mix 100 parts of ferronickel slag, 5 1 part of alkaline activator A1 and 20 parts of water were stirred in a mixer for 3 minutes to obtain a slurry; the slurry was injected into a molding mold, and compacted on a shaking table for 30 seconds to obtain a compact; the compact was placed in a room temperature curing box for 12 hours of curing After demoulding, steam curing at 40°C for 12 hours to obtain ferronickel slag geopolymer. Measure its compressive strength, the result is: 3d compressive strength is 45.22MPa, 7d compressive strength is 50.73MPa, 28d compressive strength is 53.41MPa.

Embodiment 2

[0022] Add 100 parts of water glass, 0.5 part of hydrotalcite, 0.5 part of sodium rosinate and 1.0 part of fatty alcohol polyoxyethylene ether sodium sulfate into the stirring equipment, and stir evenly to obtain alkaline activator A2; 100 parts of ferronickel slag, 8 1 part of alkaline activator A2 and 25 parts of water were stirred in a mixer for 2 minutes to obtain a slurry; the slurry was injected into a molding mold, and compacted on a vibration table for 40 seconds to obtain a compact; the compact was placed in a room temperature curing box for 12 hours of curing After demoulding, steam curing at 80°C for 24 hours to obtain ferronickel slag geopolymer. Measure its compressive strength, the result is: 3d compressive strength is 55.20MPa, 7d compressive strength is 60.76MPa, 28d compressive strength is 63.43MPa.

Embodiment 3

[0024] Add 100 parts of water glass, 0.5 part of hydrotalcite, 0.2 part of sodium rosinate and 0.3 part of fatty alcohol polyoxyethylene ether sodium sulfate into the stirring equipment, and stir evenly to obtain alkaline activator A3; 100 parts of ferronickel slag, 10 Stir the alkaline part of activator A3 and 35 parts of water in a mixer for 2 minutes to obtain a slurry; inject the slurry into a molding mold and shake it on a compacting table for 60 seconds to obtain a compact; place the compact in a normal temperature curing box for 48 hours After demoulding, steam curing at 60°C for 12 hours to obtain ferronickel slag geopolymer. Measure its compressive strength, the result is: 3d compressive strength is 55.68MPa, 7d compressive strength is 60.30MPa, 28d compressive strength is 62.44MPa.

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Abstract

The invention relates to a ferronickel slag geopolymer binding material and a preparation method thereof, and belongs to the technical field of recycling of inorganic nonmetallic materials and industrial solid waste. The ferronickel slag geopolymer binding material is prepared from 100 parts of ferronickel slag, 5-20 parts of alkali excitant and 20-40 parts of water. The alkali excitant is prepared from 100 parts of water glass, 0.1-1.0 part of hydrotalcite, 0.1-1.0 part of sodium abietate and 0.1-1.0 part of fatty alcohol-polyoxyethylene ether sodium sulfate. The invention further provides the preparation method of the ferronickel slag geopolymer binding material. Ferronickel slag geopolymers are high in curing speed, high in strength, good in durability and high in production efficiency. Meanwhile, the solid waste ferronickel slag is adopted as the main raw material, the preparation process is simple, cost is low, resources and energy can be saved, and environment friendliness can be achieved.

Description

technical field [0001] The invention relates to the field of resource utilization of industrial waste residues, in particular to a ferronickel slag geopolymer and a preparation method thereof. Background technique [0002] In recent years, with the continuous development of my country's industry, a large number of industrial waste residues have been produced, and environmental problems have become more and more serious. Therefore, it is extremely urgent to find a simple and low-cost method to solve these industrial wastes. Geopolymer (Geopolymer) is a new type of inorganic gelling material with a high molecular polymer structure first developed in 1978 by the French scientist Davidovits using an active low-calcium Si-Al material to react with a high-alkali solution. This type of material not only has the excellent properties of organic polymers, ceramics, cement and other materials, but also mostly uses industrial solid waste such as fly ash, blast furnace slag, steel slag ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/153C04B7/36
CPCC04B7/1535C04B7/36C04B12/005Y02P40/10Y02P40/121
Inventor 刘福田刘云刘梁友
Owner UNIV OF JINAN
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