Burning-free geology polymer material of red mud coal ash and preparation method thereof

A geopolymer and fly ash technology, applied in cement production, manufacturing tools, solid waste management, etc., can solve the problems of high demand for energy consumption, increase the production cost of sintering process, etc., to reduce energy consumption, protect Cultivated land and natural environment, the effect of reducing dependence

Inactive Publication Date: 2010-05-19
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although there are research reports that the utilization rate of red mud and fly ash can be improved by producing red mud and fly ash sinte

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0017] The raw materials and formula of the specific embodiment 1 of the present invention are: by weight percentage, the content of each component during batching is 70% of Hejin red mud, 5% of fly ash, 25% of construction fine sand and construction gravel, solid water 4% glass powder, and take Hejin red mud+fly ash+building fine sand and building gravel as 100%, plus 15% water and 3% calcium lignosulfonate powder.

[0018] The red mud fly ash non-burning geopolymer material and its preparation method proposed by the present invention are characterized in that: the method is first to prepare the powdery raw materials (Hejin red mud 70%, fly ash 5%, solid water 4% glass powder, 1% calcium lignosulfonate powder) weighed in proportion and mixed and ground until the particles are less than 0.088mm, then add 10% of construction fine sand and 15% of construction gravel according to the above ratio and mix evenly, Add water and mix the material in a forced mixer to a semi-dry state,...

specific Embodiment 2

[0020] The raw materials and formula of the specific embodiment 2 of the present invention are: by weight percentage, the content of each component when batching is respectively 36% of Hejin red mud, 24% of fly ash, 40% of building fine sand and crushed stone, solid water glass powder 6%, and take Hejin red mud+fly ash+building fine sand and building gravel as 100%, plus 10% water and 2.5% calcium lignosulfonate powder.

[0021]The red mud fly ash non-burning geopolymer material and preparation method thereof proposed by the present invention are characterized in that: the method is first to use the powdery raw material (Hejin red mud 36%, fly ash 24%, solid Water glass powder 6%, calcium lignosulfonate powder 2.5%) are weighed in proportion and mixed and ground to particles less than 0.088mm, then add building fine sand 20% and building crushed stone 20% and mix uniformly according to the above ratio, Add water and mix the material in a forced mixer to a semi-dry state, then ...

specific Embodiment 3

[0023] The raw materials and formula of the specific embodiment 3 of the present invention are: by weight percentage, the content of each component when batching is respectively 15% of Hejin red mud, 40% of fly ash, 45% of construction fine sand and construction gravel, solid water 8% glass powder, and take Hejin red mud+fly ash+building fine sand and building gravel as 100%, plus 7% water and 2% calcium lignosulfonate powder.

[0024] The red mud fly ash non-burning geopolymer material and preparation method thereof proposed by the present invention are characterized in that: the method is first to use the powdery raw material (Hejin red mud 15%, fly ash 40%, solid Water glass powder 8%, calcium lignosulfonate powder 2%) are weighed in proportion and mixed and ground to particles less than 0.088mm, then add 25% of building fine sand and 20% of building gravel according to the above ratio and mix evenly, Add water and mix the material in a forced mixer to a semi-dry state, the...

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Abstract

The invention relates to a burning-free geology polymer material of red mud coal ash and a preparation method thereof, belonging to the technical field of recycling inorganic nonmetal material and industrial solid waste. Kawazu mud powder and coal ash are taken as main substrate raw materials, building fine sands and building crushed stones are taken as aggregate, solid water glass powder is taken as alkali activator to prepare the burning-free geology polymer material of red mud coal ash. The raw materials comprise the following components based on parts by weight percent: 5-98% of the kawazu mud powder, 1-65% of the coal ash, 1-96% of the building fine sands and the building crushed stones, and 1-20% of the solid water glass powder. Counting the red mud+the coal ash+the building fine sands and the building crushed stones as 100%, the raw materials further comprise the following components based on parts by weight percent: 5-45% of water and 0.1-10% of calcium lignosulphonate. The preparation method comprises the steps of: dosing, mixing, aging, shaping, maintaining and drying, etc. The invention has the advantages of the high use ratio of industrial solid waste, the less pollution, the low energy composition and the simple operation of the preparation technology, and embodies the important meanings of environment protection, energy conservation and emission reduction.

Description

Technical field: [0001] The invention relates to a red mud fly ash geological polymer material and a preparation method thereof, belonging to the technical field of recycling of inorganic non-metallic materials and industrial solid waste. Background technique: [0002] Red mud is the leaching residue after leaching bauxite with alkali in alumina production. With the continuous development of the scale of the domestic aluminum industry, my country's annual discharge of red mud is increasing, and the stockpiling of red mud will occupy land. If the red mud enters the soil with rainwater, it will cause salinization of the soil, and at the same time pollute the groundwater, which will have a certain impact on the ecological environment; the red mud piled in the open air will be scattered in the air with the wind in dry weather, which will cause air pollution and easily cause pollution. Sandy weather. Therefore, how to efficiently use red mud and reduce its environmental polluti...

Claims

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Application Information

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IPC IPC(8): C04B28/26B28B1/10B28B3/00C04B18/08C04B14/02C04B14/06
CPCC04B28/008C04B2111/00017Y02P40/10Y02W30/91C04B12/04C04B14/02C04B14/06C04B18/0409C04B18/08C04B20/0092C04B24/18C04B40/0028
Inventor 李文娟龚猛杨林钱忠俊黄朝晖房明浩刘艳改
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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