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Gradient utilization treatment process for 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: 2020-07-10
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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  • Gradient utilization treatment process for casting aluminum slag

Examples

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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 gradient utilization treatment process for casting aluminum slag. The gradient utilization treatment process comprises the following steps that the casting aluminum slag is put into a ball mill to be ground through a space bag feeding device; multi-stage screening is conducted on the casting aluminum slag, after the three-stage separation is performed on the casting aluminum slag ground by the ball mill, a coarse material storage bin is filled with a coarse material by a feeding machine, and a fine material storage bin is filled with a medium material and a fine material; the coarse and fine materials are correspondingly; the aluminum content is detected, and sampling and detecting are conducted on the materials in the coarse material bin and the fine material bincorrespondingly; stirring and proportioning is conducted; and the rest part of the material in the coarse material bin serves as a secondary aluminum raw material and is loaded into a sealed space bag to be stored, and the discharged material obtained after stirring and proportioning serves as a deoxidizing agent raw material according to an aluminum content detection result and the grade requirement of a needed aluminum slag product and is loaded into the space bag to be stored. According to the gradient utilization treatment process for the casting aluminum slag, by the adoption of the gradient utilization treatment process for the casting aluminum slag, on the premise that the aluminum slag grade standard is met, metal aluminum is extracted as much as possible, the aluminum slag graderequirement is met, and high-value useful components are extracted as well.

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 Applications(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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