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Apparatus for preventing periodic refinement of seed decomposition in Bayer process alumina production

A periodic refinement and Bayer process technology, applied in the preparation of alkali metal aluminate/alumina/aluminum hydroxide, etc., to achieve the effect of reducing the amount of deposition, reducing the cost of the production process, and avoiding the periodic refinement

Pending Publication Date: 2019-08-16
JIYUAN VOCATIONAL & TECHN COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many solutions for periodic refinement in the prior art, none of these solutions can fundamentally solve this problem

Method used

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  • Apparatus for preventing periodic refinement of seed decomposition in Bayer process alumina production
  • Apparatus for preventing periodic refinement of seed decomposition in Bayer process alumina production
  • Apparatus for preventing periodic refinement of seed decomposition in Bayer process alumina production

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Embodiment Construction

[0013] Such as Figure 5 As shown, the device for preventing the periodic refinement of seed classification in the production of Bayer process alumina in this embodiment includes 12 seed classification units, which are sequentially divided into first-level seed grouping, second-level seed grouping, and third-level seed grouping along the fluid flow direction. and four-level seed grouping, the first-level seed grouping, the second-level seed grouping, the third-level seed grouping and the fourth-level seed grouping all include four seed subunits, and the entire seed-dividing process flow material stays The time is about 60 hours.

[0014] Such as figure 1 and Figure 5 As shown, the semen discharge port is in fluid communication with the feed main pipe 1 of the seed sub-unit at the head end, the discharge main pipe 2 of the seed sub-unit at the tail end is in fluid communication with the feed port of the mother liquor pool, and the middle all The feed main pipe 1 of the seed...

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Abstract

The invention discloses an apparatus for preventing the periodic refinement of seed decomposition in the Bayer process alumina production. The apparatus comprises one or more seed decomposition units,wherein a refined liquid discharge port fluidly communicates with a feeding main pipe of the seed decomposition unit at the head end, a discharge main pipe of the seed decomposition unit at the tailend fluidly communicates with a feeding port of a mother liquid pool, a feeding main pipe of each intermediate seed decomposition unit fluidly communicates with a discharge main pipe of the upstream seed decomposition unit, a discharge main pipe of each intermediate seed decomposition unit fluidly communicates with a feeding main pipe of the downstream seed decomposition unit, and each seed decomposition unit comprises a seed decomposition tank, a feeding pipeline, a discharge pipeline, and a spare pipeline for examining and repairing. The seed decomposition tank structure and the seed decomposition process are redesigned, the periodic refinement phenomenon in the seed decomposition process is avoided to occur, and the classification of the particle size of aluminum hydroxide in the seed decomposition process is realized, so that the cost of the subsequent alumina production process is greatly reduced, and the production efficiency is improved.

Description

technical field [0001] The present invention relates to the field of alumina production. Specifically, it is a device to prevent periodic refinement of seeds in the production of Bayer process alumina. Background technique [0002] During the decomposition process of the seeds produced by the Bayer method, the periodic thinning phenomenon is common in all alumina plants, and the aluminum hydroxide particles experience periodic changes of gradual growth, sudden reduction and gradual growth during the decomposition process , This periodic change will seriously affect the normal production of Bayer process. Although there are many solutions for periodic thinning in the prior art, none of these solutions can fundamentally solve this problem. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to provide a device for preventing the periodic refinement of seeds in the production of Bayer process alumina. [0004] In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/14
CPCC01F7/14
Inventor 马科友王红伟张晓杰徐素鹏苏小莉李晓乐杨继朋秦凤婷
Owner JIYUAN VOCATIONAL & TECHN COLLEGE
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