Aluminum ash-based porous ceramic material and preparation method thereof

A technology of porous ceramics and aluminum ash, which is applied in the preparation of porous ceramic materials and the field of porous ceramic materials, can solve the problems of unreasonable disposal and utilization of residues, and achieve the effect of reasonable design, avoiding toxic and dangerous gases, and ensuring safety.

Pending Publication Date: 2022-03-01
武汉大学(肇庆)资源与环境技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other residues such as hazardous waste incineration disposal have not yet been rationally disposed of and utilized

Method used

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  • Aluminum ash-based porous ceramic material and preparation method thereof
  • Aluminum ash-based porous ceramic material and preparation method thereof
  • Aluminum ash-based porous ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Aluminum ash, incineration and disposal of fly ash, incineration and disposal of slag, electroplating sludge, and other solid waste (waste glass) in the proportion of 25wt%, 10wt%, 12wt%, 6wt%, 47wt% (based on the solid matter after drying , the main chemical composition of hazardous waste raw materials is shown in Table 1), mixed with 5% waste mineral oil, put it into a ball mill, and ball milled for 20 minutes according to the ball-to-material ratio of 4:1. Die-cast the powder obtained by grinding at a die-casting strength of 7 MPa and a die-casting time of 3 minutes. Put the formed blank into a high-temperature furnace, raise the temperature to 1000°C at a heating rate of 8°C / min, and then raise the temperature to 1150°C at a rate of 5°C / min, and after firing for 30 minutes, cool it to room temperature at 10°C / min to obtain aluminum ash based porous ceramic materials.

[0038] Table 1 Main chemical composition of hazardous waste raw materials

[0039]

[0040] ...

Embodiment 2

[0046] The components of aluminum ash, incineration fly ash, incineration slag and electroplating sludge refer to Example 1.

[0047] Aluminum ash, incineration and disposal of fly ash, incineration and disposal of slag, electroplating sludge, and other solid waste (waste glass) in proportions of 35wt%, 15wt%, 15wt%, 5wt%, and 30wt% (based on the solid matter after drying) ), mixed with 6% waste mineral oil, put it into a ball mill, and ball milled for 15 minutes according to the ball-to-material ratio of 5:1. Die-cast the powder obtained by grinding at a die-casting strength of 6 MPa and a die-casting time of 2 min. Put the formed blank into a high-temperature furnace, raise the temperature to 1000°C at a heating rate of 10°C / min, then raise the temperature to 1180°C at a rate of 5°C / min, and cool to room temperature at 20°C / min after firing for 40 minutes to obtain an aluminum ash base porous ceramic material.

[0048] The volume expansion of the fired aluminum ash-based p...

Embodiment 3

[0053] The components of aluminum ash, incineration fly ash, incineration slag and electroplating sludge refer to Example 1.

[0054] Aluminum ash, incineration fly ash, incineration slag, electroplating sludge, and other solid waste (waste glass) are 40wt%, 20wt%, 20wt%, 5wt%, 15wt% (based on the solid matter after drying), Put 6% waste mineral oil into the ball mill, and ball mill for 10 minutes according to the ball-to-material ratio of 6:1. Die-cast the powder obtained by grinding at a die-casting strength of 5 MPa and a die-casting time of 2 min. Put the formed blank into a high-temperature furnace, raise the temperature to 1000°C at a heating rate of 15°C / min, then raise the temperature to 1150°C at a rate of 3°C / min, and cool to room temperature at 30°C / min after firing for 60 minutes to obtain aluminum ash base porous ceramic material.

[0055] The volume expansion of the fired aluminum ash-based porous ceramic material is remarkable, and its section has a uniform an...

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Abstract

The invention discloses an aluminum ash-based porous ceramic material and a preparation method thereof, raw materials including secondary aluminum ash, incineration treatment fly ash, incineration treatment slag, electroplating sludge and silicon-containing solid waste are sequentially subjected to mixing ball milling, high-pressure dry forming and firing, and the aluminum ash-based porous ceramic material is obtained. The method is simple to operate, no water participates in the preparation process, harmful gas released by reaction of aluminum ash with water is avoided, all the raw materials adopt solid waste, no additional commercial chemical reagent is needed, the cost is low, and the prepared porous ceramic material is small in volume weight, high in strength, good in heavy metal curing effect and free of secondary pollution.

Description

technical field [0001] The invention relates to a method for preparing a porous ceramic material, in particular to a method for preparing a porous ceramic material by co-firing aluminum ash as the main raw material with waste incineration fly ash and residue, electroplating sludge and other hazardous wastes and the porous ceramic material , belonging to the technical field of solid waste resource utilization. Background technique [0002] Aluminum ash is a kind of hazardous waste produced by the aluminum industry. The "National Hazardous Waste List (2021 Edition)" stipulates that the hazardous waste code of aluminum ash is HW48, including 321-023-48~321-026-48 and 321-034-48. Its dangerous characteristics are mainly toxicity (Toxicity, T) and reactivity (Reactivity, R). The reason is that aluminum ash contains heavy metals such as zinc (Zn), lead (Pb), arsenic (As), mercury (Hg), copper (Cu), chromium (Cr), fluorine (F), chlorine ( Cl) and other halogens, the above-mention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/135C04B33/138C04B33/132C04B33/32C04B38/02
CPCC04B33/138C04B33/1352C04B33/1355C04B33/132C04B33/1328C04B33/1324C04B33/32C04B38/02C04B2235/6562C04B2235/6565C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 侯浩波曾天宇李安张珊珊程蓉
Owner 武汉大学(肇庆)资源与环境技术研究院
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