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Red mud/steel slag-based wave-absorbing cementing material and preparation method thereof

A technology of gelling materials and wave-absorbing materials, which is applied in the field of comprehensive utilization of solid waste resources, can solve problems such as a comprehensive utilization rate of less than 30%, achieve innovative environmental protection significance and engineering application prospects, low production costs, and good wave-absorbing effects Effect

Inactive Publication Date: 2021-06-01
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to statistics, 0.8-1.76 tons of red mud can be discharged for every ton of alumina produced. At present, the cumulative stock of red mud in the country is about 400 million tons, but the comprehensive utilization rate is less than 30%. It is imminent to expand the comprehensive utilization channels of red mud

Method used

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  • Red mud/steel slag-based wave-absorbing cementing material and preparation method thereof
  • Red mud/steel slag-based wave-absorbing cementing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 10-30μm, 300 parts.

[0040] Red mud: the waste residue discharged from the production of alumina by Bayer process of an aluminum company in Henan Province, the particle size is below 100μm, 100 parts.

[0041] Graphene: a carbon atom with sp 2 Two-dimensional carbon nanomaterials composed of hexagonal and honeycomb lattices composed of hybrid orbitals, produced by XG Science in the United States, with an average sheet diameter of 10-30 μm and a specific surface area of ​​120 m 2 / g-150m 2 / g, 3 parts.

[0042] Waste foam particles: expanded polystyrene waste foam particles, average particle size 2-4mm, 40 parts.

[0043] Enhancer: magnesium oxide, produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 30 parts.

[0044] Water reducer: polycarboxylate high-efficiency water reducer, 15 parts.

[0045] Mixing water: Dalian tap water, 120 pa...

Embodiment 2

[0051] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 30-50μm, 350 parts.

[0052] Red mud: the waste residue discharged from the production of alumina by Bayer process of an aluminum company in Henan Province, the particle size is below 100μm, 120 parts.

[0053] Graphene: a carbon atom with sp 2 Two-dimensional carbon nanomaterials composed of hexagonal and honeycomb lattices composed of hybrid orbitals, produced by XG Science in the United States, with an average sheet diameter of 10-30 μm and a specific surface area of ​​120 m 2 / g-150m 2 / g, 4 parts.

[0054] Waste foam particles: expanded polystyrene waste foam particles, average particle size 2-4mm, 50 parts.

[0055] Enhancer: magnesium oxide, produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 40 parts.

[0056] Water reducer: polycarboxylate high-efficiency water reducer, 18 parts.

[0057] Mixing water: Dalian tap water, 140 pa...

Embodiment 3

[0063] Steel slag: a by-product of steel production in Anshan Iron and Steel Group, with an average particle size of 10-30μm, 400 parts.

[0064] Red mud: the waste residue discharged from the Bayer process of alumina production by an aluminum company in Henan Province, with a particle size below 100 μm, 140 parts.

[0065] Graphene: a carbon atom with sp 2 Two-dimensional carbon nanomaterials composed of hexagonal and honeycomb lattices composed of hybrid orbitals, produced by XG Science in the United States, with an average sheet diameter of 10-30 μm and a specific surface area of ​​120 m 2 / g-150m 2 / g, 5 parts.

[0066] Waste foam particles: expanded polystyrene waste foam particles, average particle size 2-4mm, 60 parts.

[0067] Enhancer: magnesium oxide, produced by Tianjin Kemiou Chemical Reagent Co., Ltd., analytically pure, 50 parts.

[0068] Water reducer: polycarboxylate high-efficiency water reducer, 20 parts.

[0069] Mixing water: Dalian tap water, 160 part...

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Abstract

The invention belongs to the field of comprehensive utilization of solid waste resources, and provides a red mud / steel slag-based wave-absorbing cementing material and a preparation method of the red mud / steel slag-based wave-absorbing cementing material. The red mud / steel slag-based wave-absorbing cementing material is prepared from the following raw materials in parts by weight: 300-400 parts of steel slag, 100 to 140 parts of red mud; 3 to 5 parts of graphene; 40-60 parts of waste foam particles; 30-50 parts of a reinforcing agent; 15 to 20 parts of a water reducing agent; and 120 to 160 parts of mixing water. The preparation method comprises the following steps: firstly, adding the graphene and the water reducing agent into the mixing water, and treating in a 340W ultrasonic environment for 4 minutes to form a uniform graphene aqueous solution; secondly, steel slag, red mud, waste foam particles and a reinforcing agent are added into a stirring pot to be evenly stirred, then the graphene aqueous solution is added to be evenly stirred, and prepared slurry is poured into a mold; and finally, maintaining the sample in an air environment, and removing the mold. The red mud / steel slag based wave-absorbing cementing material prepared by the invention not only has relatively low production cost, but also has relatively good electromagnetic wave absorbing performance, is beneficial to promoting comprehensive utilization of industrial source solid waste resources such as the steel slag and the red mud, and has remarkable environment-friendly, economic and engineering application values.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste resources, and relates to a wave-absorbing material, in particular to a red mud / steel slag-based wave-absorbing gelling material and a preparation method. Background technique [0002] In recent years, with the rapid development of modern wireless communication technologies such as 5G, urban power systems, and industrial systems, electromagnetic waves, as the most commonly used wireless information carrier, exist in residents' daily life, wireless communications, and electronic equipment. Electromagnetic waves are oscillating particle waves derived from the same direction and mutually perpendicular electric fields and magnetic fields in space. They are electromagnetic fields that propagate in the form of waves and have wave-particle duality. The medium moves in the form of waves, and its propagation direction is perpendicular to the plane formed by the electric field and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B18/14C04B18/04
CPCC04B28/105C04B18/142C04B18/0409C04B2111/00258C04B14/024C04B18/20C04B2103/302Y02W30/91
Inventor 王宝民邓双韩俊南
Owner DALIAN UNIV OF TECH
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