Comprehensive treatment method and system for red mud resource utilization

A comprehensive treatment and resource recovery technology, applied in the field of resource utilization of industrial waste residues, can solve problems such as inability to realize industrialization promotion, poor industrial applicability, and unsatisfactory effects, and achieve cost reduction, simple process methods and equipment, and high returns. high effect

Pending Publication Date: 2020-06-23
彭思尧
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors found that the existing treatment process often has the characteristics of high treatment cost, high energy consumption, complicated proce

Method used

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  • Comprehensive treatment method and system for red mud resource utilization
  • Comprehensive treatment method and system for red mud resource utilization
  • Comprehensive treatment method and system for red mud resource utilization

Examples

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Example Embodiment

[0060] Example 1

[0061] A comprehensive treatment system for resource utilization of red mud. The comprehensive treatment system includes an external heating type cyclotron kiln. The reaction device is provided with a viewing window, so as to facilitate the operator to observe the reaction situation in the reaction device. The integrated treatment system may also include a red mud pretreatment device and a red mud feed device. The red mud pretreatment device includes a dehydration drying device and a crushing device connected in sequence; wherein, the dehydration drying device is a heating device. Rotary kiln for drying. The red mud feeding device is a vacuum displacement feeding device, and the red mud that has been dehydrated, dried and crushed (the red mud particle size is controlled to be 300 microns or less, 74 microns or less accounts for 80%) is sent to the vacuum displacement feeding device, and then The reaction device is input through the pipeline to prevent outside ...

Example Embodiment

[0069] Example 2

[0070] A comprehensive treatment system for resource utilization of red mud. The comprehensive treatment system includes a reaction device, that is, a high-temperature coal gas fluidized bed. The reaction device is provided with a viewing window, so that the operator can observe the reaction situation in the reaction device. The integrated treatment system may further include a red mud pretreatment device and a red mud feed device, the red mud pretreatment device includes a dehydration drying device and a crushing device connected in sequence; wherein, the dehydration drying device may be Heating and drying rotary kiln. The red mud feeding device is a vacuum displacement feeding device, which sends the dehydrated, dried and crushed red mud (the red mud particle size is controlled to be below 300 microns, 80% of which is below 74 microns) is sent to the vacuum displacement feeding device, Then enter the reaction device through a pipeline to prevent outside oxy...

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Abstract

The invention provides a comprehensive treatment method and system for red mud resource utilization, and belongs to the technical field of industrial waste residue resource utilization. According to the method, dried and heated red mud is directly and fully contacted with reducing gas and reacts with reducing gas; ferric oxide in the red mud is reduced into ferroferric oxide, ferroferric oxide isrecovered through magnetic separation, the remaining dry red mud can be directly processed to prepare cement or used for further separation of other metals, the technological process is simple and convenient, and the method has a good practical application value, especially large-scale industrialization value and industrialization application value.

Description

technical field [0001] The invention belongs to the technical field of resource utilization of industrial waste residues, and in particular relates to a comprehensive treatment method and system for resource utilization of red mud. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Red mud is a very fine-grained strong alkaline solid waste produced during the production of alumina from bauxite. It is red because it contains a large amount of iron oxide, so it is called red mud. The output of red mud depends on the ore Taste, production method, technical level vary. Most production plants produce 0.8-1.5 tons of red mud for every 1 ton of alumina produced. With the annual in...

Claims

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Application Information

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IPC IPC(8): C01G49/08C04B7/24C21B3/04
CPCC01G49/08C04B7/24C21B3/04Y02W30/50Y02P10/20Y02P40/10
Inventor 彭思尧彭禹舜梁应铭
Owner 彭思尧
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