Technology and production system for producing aluminum acid calcium powder by using aluminum ash

A technology of calcium aluminate powder and production system, which is applied in the preparation of calcium aluminate, alkaline earth metal aluminate/alumina/aluminum hydroxide, etc., can solve the problems of polluting the environment and the lack of comprehensive utilization of useful components of aluminum ash. , to achieve significant economic and environmental benefits

Inactive Publication Date: 2019-11-15
宁夏正丰环保建材有限公司
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Problems solved by technology

The reality is that due to the lack of a unified process technology for social benefits, environmental benefits, and economic benefits, the treatment of aluminum ash in China is still at a relatively primitive sta

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  • Technology and production system for producing aluminum acid calcium powder by using aluminum ash
  • Technology and production system for producing aluminum acid calcium powder by using aluminum ash

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Embodiment Construction

[0031] In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The first aspect of the embodiments of the present application shows a process for producing calcium aluminate powder by using aluminum ash, such as figure 1 As shown, the process includes the following steps:

[0033] S101. After crushing and screening, the aluminum ash is evenly mixed with limestone according to ...

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Abstract

The embodiment of the invention provides a technology and production system for producing aluminum acid calcium powder by using aluminum ash. The technology comprises the steps that after being brokenand screened, the aluminum ash is evenly mixed with limestone in a predetermined proportion, and a mixed raw material is obtained; the mixed raw material is subjected to ball milling to obtain mixedraw material powder; the mixed raw material powder is subjected to preheating decomposition to obtain a decomposed mixed raw material; the decomposed mixed raw material is sintered to obtain sinteredblocks; the sintered blocks are cooled, ground and screened in sequence to obtain the aluminum acid calcium powder. The production system for producing the aluminum acid calcium powder by using the aluminum ash comprises a raw material preparation device, a raw material calcination device and a clinker processing device. Fluorides, nitrides and other harmful substances in the aluminum ash are bound with calcium ions by using the processing technology and the production system to be prepared into harmless substances, the aluminum ash can be processed into the harmless substances to protect theenvironment, moreover, the aluminum acid calcium powder produced by using the method is a main raw material for preparing an efficient water treatment agent, and the economic and environmental benefits are significant.

Description

technical field [0001] The invention relates to the technical field of chemical waste treatment, in particular to a process and a production system for producing calcium aluminate powder by utilizing aluminum ash. Background technique [0002] Aluminum ash is produced in all processes in which aluminum is melted, such as aluminum electrolysis and aluminum (including secondary aluminum) processing. Its sources can be divided into aluminum ash produced in the process of aluminum electrolytic smelting, aluminum ash in the process of aluminum melting and casting, and aluminum ash in the processing of recycled aluminum. High-risk chemicals such as ammonia, hydrogen fluoride, and cyanide are easily generated during the production and disposal of aluminum ash. In recent years, facing the increasingly severe environmental situation, the disposal of hazardous waste aluminum ash in the aluminum industry has become the focus of the industry. The reality is that due to the lack of uni...

Claims

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Application Information

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IPC IPC(8): C01F7/16
CPCC01F7/164
Inventor 吴水良
Owner 宁夏正丰环保建材有限公司
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