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Environment-friendly and recyclable aluminum alloy slagging agent and preparation method thereof

A technology of aluminum alloy and slag agent, which is applied in the field of alloy smelting, can solve the problems of waste of resources, pollute the environment, etc., and achieve the effect of facilitating the separation of slag and liquid and enhancing the effect of slag.

Active Publication Date: 2021-03-19
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only causes a serious waste of resources, but also pollutes the environment. The Ministry of Environmental Protection and the Development and Reform Commission listed aluminum ash in the "National List of Hazardous Wastes" in 2008.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of this slagging agent specifically comprises the steps:

[0018] (1) Dry the fluoride salt residue and calcium fluoride of the Al-5Ti-1B master alloy prepared by the fluoride salt reaction method at 200-300° C. for 2-5 hours;

[0019] (2) Fully mix the above-mentioned fluorine salt with dried potassium feldspar and aluminum ash to obtain an aluminum alloy slag removing agent.

[0020] In the present invention, the method for preparing the Al-5Ti-1B master alloy by the fluoride salt reaction method is referred to Chinese Patent Publication No.: CN107034374A, and the Al-5Ti-1B master alloy is obtained by chemical reaction of the fluoride salt mixture and the aluminum melt; wherein: according to In terms of the weight percent of each component in the fluoride salt mixture to the aluminum melt, the composition of the fluoride salt mixture is: K 2 TiF 6 22-30%, KBF 4 10-14%, CaF 2 0.01~0.114%, MgF 2 It is 0.01-0.114%, and the fluorine salt residu...

Embodiment 1

[0023] In this embodiment, the environmentally friendly, recyclable aluminum alloy slag removing agent and its preparation method are as follows:

[0024] (1) Prepare materials according to the following components by weight: 70% fluorine salt residue+15% aluminum ash+1% potassium feldspar+14% calcium fluoride prepared from Al-5Ti-1B master alloy by fluoride salt reaction method. Among them, the particle sizes of the fluorine salt residue, aluminum ash, potassium feldspar and calcium fluoride of the Al-5Ti-1B master alloy prepared by the raw material fluoride salt reaction method are 0.05~0.08mm, 0.08~0.1mm, 0.04~0.07mm and 0.04~ 0.07mm.

[0025] (2) After the fluoride salt residue and calcium fluoride of the Al-5Ti-1B master alloy prepared by the fluoride salt reaction method in step (1) are dried at a constant temperature of 200 ° C for 4 hours, they are fully mixed with dried potassium feldspar and aluminum ash, namely An aluminum alloy slag remover is obtained.

Embodiment 2

[0029] In this embodiment, the environmentally friendly, recyclable aluminum alloy slag removing agent and its preparation method are as follows:

[0030] (1) Prepare materials according to the following components by weight: 80% fluorine salt residue+10% aluminum ash+3% potassium feldspar+7% calcium fluoride prepared from Al-5Ti-1B master alloy by 80% fluoride salt reaction method. Among them, the particle sizes of the fluorine salt residue, aluminum ash, potassium feldspar and calcium fluoride of the Al-5Ti-1B master alloy prepared by the raw material fluoride salt reaction method are 0.05~0.08mm, 0.08~0.1mm, 0.04~0.07mm and 0.04~ 0.07mm.

[0031] (2) After drying the fluoride salt residue and calcium fluoride of the Al-5Ti-1B master alloy prepared by the fluoride salt reaction method in step (1) at a constant temperature of 250 ° C for 3 hours, they are fully mixed with dried potassium feldspar and aluminum ash, namely An aluminum alloy slag remover is obtained.

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Abstract

The invention relates to an environment-friendly and recyclable aluminum alloy slagging agent and a preparation method thereof, and belongs to the field of alloy smelting. From composition, the aluminum alloy slagging agent comprises the following components in percentage by weight: 60%-80% of villiaumite residues of Al-5Ti-1B intermediate alloy prepared through a villiaumite reaction method, 2%-20% of aluminum ash, 1%-5% of potassium feldspar and 1%-15% of calcium fluoride. The preparation method of the aluminum alloy slagging agent comprises the following steps: (1) drying the villiaumite residues of the Al-5Ti-1B intermediate alloy prepared through the villiaumite reaction method and calcium fluoride at 200-300 DEG C for 2-5 hours; and (2) fully mixing the villiaumite with dried potassium feldspar and aluminum ash to obtain the aluminum alloy slagging agent. The slagging agent not only meets the slagging effect of an aluminum alloy melt, but also is an environment-friendly and recyclable ideal flux.

Description

technical field [0001] The invention relates to an environment-friendly and recyclable aluminum alloy slag removing agent and a preparation method thereof, belonging to the field of alloy smelting. Background technique [0002] In the process of producing aluminum ingots for remelting or aluminum alloy smelting with primary aluminum, a large amount of scum (also known as aluminum ash) will be generated on the surface of the melt. According to statistics, in the production process of aluminum alloy, ~2.5wt% scum will be produced. Usually, after the company or enterprise recycles the aluminum, the remaining aluminum ash is directly stored or landfilled. This not only causes a serious waste of resources, but also pollutes the environment. The Ministry of Environmental Protection and the National Development and Reform Commission listed aluminum ash in the "National List of Hazardous Wastes" in 2008. Therefore, how to recycle aluminum ash is of great significance to the indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/03C22B21/06
CPCC22B21/062C22C1/026C22C1/03C22C1/06Y02P10/20
Inventor 张丽丽赵九洲何杰江鸿翔
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI