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A method for the harmless resource utilization of gray-green aluminum

A technology for recycling aluminum ash, which is applied in the field of recycling and utilization of aluminum ash, a waste resource in the aluminum industry, to achieve the effects of reducing power consumption, mining and good economic benefits.

Active Publication Date: 2022-06-03
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is: in order to solve the problems existing in the existing aluminum ash treatment methods and to utilize the fluoride and aluminum nitride in the aluminum ash as resources, the present invention provides a method for the harmless resource utilization of aluminum gray green

Method used

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  • A method for the harmless resource utilization of gray-green aluminum

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Embodiment 1

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Embodiment 2

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Embodiment 3

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Abstract

The invention discloses a technical field of solid waste utilization, and in particular relates to a method for the green and harmless utilization of aluminum ash, which is suitable for aluminum ash produced in the process of electrolytic aluminum. During the treatment of aluminum ash, according to the components of aluminum ash, After treatment, use, technical requirements of processed products and other parameters, after the aluminum ash machine is processed, add an appropriate amount of calcium oxide to mix, and put it into a nitriding rotary furnace for treatment to realize the conversion and removal of soluble fluoride, and realize the fluorine in aluminum ash The harmlessness of compounds and nitrides, and the products produced by the processed products are used in other industries, which can produce obvious economic benefits and have obvious practical significance for improving the green development of the aluminum industry.

Description

A kind of method of aluminum gray green harmless resource utilization technical field The invention belongs to the present invention relates to the recycling technical field of aluminium industry waste resource aluminium ash, particularly relates to a A method for harmless resource utilization of aluminum gray green. Background technique Since the 1990s, my country's electrolytic aluminum industry has developed rapidly, and my country's electrolytic aluminum production capacity has reached 2019. To 47 million tons, the output is 35.7 million tons, accounting for more than 60% of the world; aluminum ash is the slag and floating skin produced in the aluminum smelting process. according to statistics Calculated, for every 1000t of aluminum produced, about 7-10t of aluminum ash will be produced. Aluminum ash contains a higher proportion of metal aluminum and aluminum oxide, is a valuable renewable resource. The aluminum nitride deliquescence in the aluminum ash can r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B3/00B09B3/40B09B3/70B09B5/00
CPCB09B3/00B09B5/00Y02P10/20
Inventor 魏国立朱青德胡绍岩丁万武杨成亮段中波陈亚团
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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