Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuous production method and apparatus for alpha semi-water gypsum

A technology of hemihydrate gypsum and a production method, which is applied in the field of gypsum processing, can solve the problems of large equipment investment, high labor intensity, complicated operation, etc., and achieves the effects of reducing investment, saving energy consumption, and simplifying technological process.

Inactive Publication Date: 2007-03-28
SHANXI BEIFANG GYPSUM IND
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large equipment investment, large area, complex operation, high labor intensity
If a large-scale reactor is used, when the α-type hemihydrate gypsum slurry is produced, the reactor cannot be used for the next production immediately, but as a storage tank, which is not only inefficient, but also consumes a lot of energy to maintain the reactor. Slurry will not revert to solidification

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
  • Continuous production method and apparatus for alpha semi-water gypsum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A continuous production method of α-type hemihydrate gypsum, using dihydrate gypsum slurry as raw material, continuously pumping the dihydrate gypsum slurry into a reaction tube arranged in a heating box with a high-pressure pump, and the raw material slurry flows in the tube during the process When the temperature and pressure reach a certain value and keep it for a certain period of time, the dihydrate gypsum removes a semi-crystalline water to generate α-type hemihydrate gypsum, and the slurry containing α-type hemihydrate gypsum is sprayed into the drying separation tower through the nozzle, thereby obtaining drying. α-type hemihydrate gypsum powder; or spray into the gypsum stirring and forming device to make gypsum products.

[0019] When the slurry containing dihydrate gypsum is continuously pumped in by one end of the high-pressure pump, the other end discharges the slurry containing α-type hemihydrate gypsum 3 after dehydration reaction; that is to say, the leng...

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 invention discloses an alpha-semi-hydrated gypsum continuous producing method and device. And the traditional 'liquid phase process' has disadvantages of high equipment investment, wide occupied land, complex to operate and high labor strenghth. But the invention changes the traditional reaction kettle into a reaction pipe with a certain length, which is coilded in a heating box, one end of the reaction pipe connected with raw material pulp high pressure pump and the other end connected with a drying separation tower or gypsum blend-mouding device, thus implemnting continuous production of alpha-semi-hydrated gypsum. Therefore, the invention has advantages of saving reaction equipment investment and reducing production energy consumption.

Description

technical field [0001] The invention relates to the processing technology of gypsum, in particular to a kind of α-type hemihydrate gypsum production method and device. Background technique [0002] At present, the only mature process for producing α-type hemihydrate gypsum with powdery dihydrate gypsum as raw material is the "liquid phase method", which is to put powdery dihydrate gypsum into a reactor for high temperature and high pressure cooking, and then dry and After secondary grinding, α-type hemihydrate gypsum powder can be obtained. This traditional "liquid phase method" to produce α-type hemihydrate gypsum powder has expensive drying system equipment, high energy consumption and complicated operation. If the reacted α-type hemihydrate gypsum slurry is no longer dried and directly cast into gypsum products, not only the investment of drying equipment but also energy can be saved. However, because the "liquid phase method" production requires a high pressure condi...

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 Applications(China)
IPC IPC(8): C04B11/02
Inventor 王永昌张继忠柏飞
Owner SHANXI BEIFANG GYPSUM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com