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Cascade Utilization Process of Casting Aluminum Slag

A treatment process and technology for aluminum slag, which is applied in the field of cascade utilization treatment process of molten and cast aluminum slag, can solve the problem of not extracting high-value and useful components, and achieve the effect of realizing cascade utilization, increasing added value and increasing added value.

Active Publication Date: 2021-12-21
北京中冶设备研究设计总院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no cascade treatment process to extract high-value and useful components according to the grade of aluminum slag and meet the grade requirements of aluminum slag

Method used

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  • Cascade Utilization Process of Casting Aluminum Slag

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Effect test

Embodiment 1

[0027] figure 1 It is a process flow diagram of an embodiment of a step utilization treatment process of molten casting aluminum slag according to the present invention. As shown in the figure, the present invention provides a step utilization treatment process of molten casting aluminum slag, which includes the following steps:

[0028] (1) Grinding molten casting aluminum slag: The molten casting aluminum slag is packed in a space bag for easy transportation, and the molten casting aluminum slag is put into a ball mill for grinding by using the space bag feeding device, so as to process the molten casting aluminum slag with irregular appearance into tiny particles, After processing, its particle diameter reaches μm level. Dust will be generated during the feeding and grinding process, so a dust collector is installed at the feed inlet of the ball mill. The dust collector generates negative pressure to absorb the flying dust into its storage hopper for recycling. In this wa...

Embodiment 2

[0036] The present invention can also detect the aluminum slag as a whole, then classify and sieve, and then detect coarse particles or fine particles, and use the proportion of coarse and fine particles according to the results of the first detection and the second detection to meet the grade requirements of aluminum slag. Qualified deoxidizer raw materials are produced, and then the remaining part of the coarse particle bin is used as recycled aluminum raw materials. Therefore, the present invention adopts the above-mentioned cascade utilization treatment process of cast aluminum slag to extract as much metal aluminum as possible under the premise of meeting the grade standard of aluminum slag, so as to meet the grade requirements of aluminum slag and extract high-value useful components.

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Abstract

The invention discloses a stepwise utilization treatment process of cast aluminum slag, comprising the following steps: using a space bag feeding device to put cast aluminum slag into a ball mill for grinding; multi-stage screening of melt cast aluminum slag, and the cast aluminum slag formed by grinding by the ball mill, After three-stage sorting, the coarse material is loaded into the coarse material storage bin by the feeder, and the medium material and fine material are sent to the fine material storage bin; the coarse and fine materials are stored separately; the aluminum content is detected, and the coarse material bin and the fine material bin The materials inside are sampled and inspected separately; mixing ratio; the remaining part of the coarse material bin is used as recycled aluminum raw material, stored in a sealed space bag, and the output after mixing and ratioing is based on the aluminum content test results and the required aluminum slag product grade requirements As a deoxidizer raw material, put it into a space bag for storage. The present invention adopts the stepwise utilization treatment process of casting aluminum slag, extracts as much metal aluminum as possible under the premise of meeting the aluminum slag grade standard, and extracts high-value useful components while meeting the aluminum slag grade requirements.

Description

technical field [0001] The invention relates to the technical field of resource recycling of molten casting aluminum slag, in particular to a stepwise utilization treatment process of molten casting aluminum slag. Background technique [0002] Aluminum slag is the cooled product of molten slag produced in the production process of electrolytic aluminum or cast aluminum. With the gradual increase of aluminum consumption, more and more cast aluminum slag is produced in the process of aluminum processing. In the application of aluminum slag, the deoxidizer for steelmaking is an effective resource recycling method. The main components of molten casting aluminum slag are Al, Al 2 o 3 , SiO 2 etc. The composition and content of aluminum slag from different sources will be different. According to YS / T 1177-2017 aluminum slag nonferrous industry standard, aluminum slag is divided into five grades, as shown in Table 1: [0003] Table 1 [0004] grade Metal aluminum ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B1/00C22B21/00C21C7/06
CPCC22B7/04C22B1/005C22B7/005C22B21/00C21C7/06Y02P10/20
Inventor 孙彦强张磊张金利马超宇宋义昭薛曼龄
Owner 北京中冶设备研究设计总院有限公司
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