Red mud slurry heating method and apparatus for alumina production

A heating method, red mud slurry technology, applied in the field of red mud slurry heating, can solve the problems of low heating efficiency, influence on sedimentation separation and washing, uneven temperature of red mud slurry, etc., and achieve easy cleaning, easy scarring and clogging, cleaning difficult effect

Active Publication Date: 2007-08-01
GUIZHOU BRANCH CHINA ALUMINUM IND
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and equipment for heating red mud slurry in the alumina production process, so that the temperature of the red mud slurry can meet the production process requirements, so as to solve the problems of low heating efficiency and low temperature of the red mud slurry in the prior art. Inhomogeneity, steam agitation affects many technical problems such as sedimentation separation and washing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Red mud slurry heating method and apparatus for alumina production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Embodiment of the present invention: due to heat dissipation and cooling in the process of material transportation and residence, the temperature of the red mud slurry from the previous process cannot meet the technical requirements of the sedimentation separation and washing process. Therefore, a branch pipe (2) is opened on the red mud slurry conveying pipeline (1) to divert the red mud slurry entering the feed tank (7), and 1 / 3 to 1 / 2 of the slurry is sent into the feed tank (7) through the valve (9). Heater (4) is thoroughly mixed with steam entering through pipe (3). After uniform heating, the feed box (7) that enters the settling tank (6) through the pipeline (5) is mixed with the red mud slurry that directly enters the feed box (7) through the pipeline (1), and then enters the settling tank through the pipeline (11) (6) To ensure that the red mud slurry reaches the slurry temperature required by the process technology during the washing process. The red mud slur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses red mud slurry heating method and apparatus for alumina production. The red mud slurry is partially heated before entering the washing and depositing tank to reach the technological process required temperature, and this can improve the deposition performance and washing effect of red mud slurry and ensure the stable and high output running of the washing and depositing tank. At the same time, material is conveyed with bottom pump and steam enters the heater by means of self pressure, so that two kinds of material contact fully to exchange heat, resulting in fast heating, easy operation and saving in energy.

Description

Technical field: [0001] The invention relates to a method and equipment for heating red mud slurry in the alumina production process. technical background: [0002] At present, in the sedimentation separation and washing process of red mud slurry in domestic alumina production, the temperature control of red mud slurry is one of the key operating technical conditions. The temperature cannot meet the technical requirements of the sedimentation separation and washing process, which will have a negative impact on production control, and it must be heated in a reasonable way. At present, steam is generally used to pass directly into the settling tank for heating. This method has poor controllability, slow heating speed, low efficiency, and serious waste of steam; heating pipes should not be too many, and should not extend too deep into the tank. Therefore, the heating point The temperature difference between the non-heating point and the non-heating point is large, which makes ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/02
CPCY02P20/10
Inventor 李丛生薛银昌陈立周江筑王强
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap