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

Method for refining industrial salt

A technology for industrial salt and hydrochloric acid, applied in the field of refining industrial salt, can solve the problem of high cost and achieve the effects of reducing refining cost, saving cost and reducing burden

Inactive Publication Date: 2005-09-14
DO FLUORIDE CHEM CO LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the refining effect is better, the cost is higher

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take the mother liquor produced by the clay brine method to produce cryolite, and adjust it to a solution with a pH value of 6.0, then add industrial salt to the solution, fully dissolve to form turbid brine, and then filter to obtain pure industrial brine .

Embodiment 2

[0015] Take the mother liquor of cryolite produced by clay brine method and the mother liquor of cryolite produced by sodium fluorosilicate method, and adjust it to a solution with a pH value of 7.5, then add industrial salt to the solution, fully dissolve, and form cloudy brine, Then filter to get pure industrial brine.

Embodiment 3

[0017] Take the mother liquor of cryolite produced by clay brine method and the mother liquor of cryolite produced by sodium fluorosilicate method, and adjust it to a solution with a pH value of 8.0, then add industrial salt to the solution, fully dissolve, and form cloudy brine, Then filter to get pure industrial brine.

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

This invention relates to a method of fuulyrefined industrial salt. The procedures are that waste water with fluorine is prepared to solution of pH=6-8, then industrial salt is added into the solution to get turbid salt water, pure salt water is got after filtration. The industrial salt water made by this invention can be used as material of clay bittern method to produce cryolite technique, materials can be cyclic used and cost is reduced. The content of calcium ion and magnesium ion in the industrial salt can be reduced from 1-2% to 0.01% and the content of calcium ion and magnesium ion in saturated industrial salt water can be reduced from 3g / l to below 0.03g / l.

Description

technical field [0001] The invention relates to a method for refining industrial salt, in particular to a method for refining industrial salt, the raw material for producing cryolite by clay brine method. Background technique [0002] At present, the industrial salt used in industrial production contains impurities such as calcium ions and magnesium ions, which must be refined to remove impurities such as calcium ions and magnesium ions in the application process. The traditional refining method is to make industrial salt into a saturated solution, and then add OH - or CO 3 - , so that calcium ions and magnesium ions form carbonate or hydroxide precipitation under alkaline conditions, and pure brine is obtained after separation. In this way, although the refining effect is better, the cost is higher. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a method for refining industrial salt, to reduce the co...

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): C01F7/54
Inventor 李世江侯红军杨华春皇甫根利于贺华
Owner DO FLUORIDE CHEM CO LTD
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