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Steel slag and blast furnace water slag composite powder as well as preparation method and application thereof

A technology of blast furnace slag and composite powder, which is applied in the field of comprehensive utilization of solid waste, can solve the problems of increasing the amount of steel slag, and achieve the effects of increasing later strength, improving hydrophobicity and cohesion, and improving strength and durability

Inactive Publication Date: 2021-03-12
安徽成弘建新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each method has corresponding limitations. It is a reasonable idea to properly combine mechanical excitation, chemical excitation and thermal excitation to increase the amount of steel slag in building materials and realize efficient and high-value utilization of steel slag.

Method used

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  • Steel slag and blast furnace water slag composite powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for modifying steel slag and blast furnace slag composite powder. The raw materials are: 38% steel slag, 57% blast furnace slag fine powder, 3% calcium oxide, 0.05% tetrahydroxyethylethylenediamine, and 0.6% sodium hydroxide , water glass 1.3%, hydroxypropyl methylcellulose 0.01%, tetrahydroxypropyl ethylenediamine 0.04%, and a total amount of 100%; the percentages are mass percentages.

[0020] According to the formula ratio, mix steel slag, blast furnace water slag fine powder, calcium oxide, tetrahydroxyethylethylenediamine, sodium hydroxide, water glass, hydroxypropyl methylcellulose and tetrahydroxypropylethylenediamine evenly to obtain product1.

Embodiment 2

[0022] A method for modifying steel slag and blast furnace slag composite powder. The raw materials are: 44% steel slag, 51% blast furnace slag fine powder, 2.4% calcium oxide, 0.07% tetrahydroxyethylethylenediamine, and 0.7% sodium hydroxide , water glass 1.8%, hydroxypropyl methylcellulose 0.01%, tetrahydroxypropyl ethylenediamine 0.02%, and a total amount of 100%; the percentages are mass percentages.

[0023] According to the formula ratio, mix steel slag, blast furnace water slag fine powder, calcium oxide, tetrahydroxyethylethylenediamine, sodium hydroxide, water glass, hydroxypropyl methylcellulose and tetrahydroxypropylethylenediamine evenly to obtain product2.

Embodiment 3

[0025] A method for modifying steel slag and blast furnace slag composite powder. The raw materials are: 42% steel slag, 54% blast furnace slag fine powder, 2% calcium oxide, 0.06% tetrahydroxyethylethylenediamine, and 0.5% sodium hydroxide , water glass 1.4%, hydroxypropyl methylcellulose 0.01%, tetrahydroxypropyl ethylenediamine 0.03%, and a total amount of 100%; the percentages are mass percentages.

[0026] According to the formula ratio, mix steel slag, blast furnace water slag fine powder, calcium oxide, tetrahydroxyethylethylenediamine, sodium hydroxide, water glass, hydroxypropyl methylcellulose and tetrahydroxypropylethylenediamine evenly to obtain Product 3.

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Abstract

The invention discloses steel slag and blast furnace water granulated slag composite powder and a preparation method and application thereof. The steel slag and blast furnace water granulated slag composite powder is prepared from 38-44% of steel slag, 51-57% of blast furnace water granulated slag micro powder, 1-3% of calcium oxide, 0.05-0.07% of tetrahydroxyethyl ethylenediamine, 0.2-0.7% of sodium hydroxide, 1.3-1.8% of water glass, 0.01% of hydroxypropyl methyl cellulose and 0.02-0.04% of tetrahydroxypropyl ethylenediamine, wherein the sum is 100%, and the percentages are mass percentages.Hydroxypropyl methyl cellulose is used, so that the hydrophobicity and cohesive force of the copper tailings can be improved, and the compaction characteristic and the structural stability of the doped copper tailing mixture are further improved. Mixed alkali of sodium silicate and sodium hydroxide is added, so that hydration reaction between the alkali-activated steel slag and the part, which isdifficult to hydrate, of the blast furnace water slag can be enhanced to generate a CSH structure, and the strength, durability and other pavement properties of the admixture are improved. Alcohol amine is added, so the early strength and the later strength of the admixture can be improved, and the admixture can be easily ground before use to excite the activity.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of solid waste, and in particular relates to a composite powder of steel slag and blast furnace water slag, a preparation method and application thereof. Background technique [0002] Solid waste refers to solid and semi-solid waste materials that pollute the environment generated in production, construction, daily life and other activities, mainly including industrial solid waste, agricultural solid waste, urban domestic waste and wastewater treatment sludge. With the continuous development of my country's industrialization, urbanization and economicalization and population surge, the output of solid waste is increasing day by day. The generation and storage of a large amount of solid waste will not only cause the pain of "garbage siege", but also cause air pollution and water pollution. A series of environmental problems that endanger human health, such as pollution and soil pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/00
CPCC04B40/0089C04B28/00C04B2201/50
Inventor 李晓静孙波谢昊刘国华
Owner 安徽成弘建新材料有限公司
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