Method for preparing high-quality strontium carbonate

A strontium carbonate, high-quality technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the troublesome problems of synthesizing soda ash, achieve good economic benefits, strong market demand, and short process

Inactive Publication Date: 2007-11-14
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the by-produced carbon dioxide gas in the carbon reduction process contains more impurities and solid dust, it becomes more troublesome to react with the mother liquor of sodium sulfide to synthesize soda ash, and the quality of the synthesized soda ash may not be suitable for the production of strontium carbonate.

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

[0021] Example 1. Mix celestite ore powder with a strontium sulfate content of 55-70% and reduced coal powder in a weight ratio of 1:1-1:1.5, and roast at a temperature of 1100-1200° C. for 4-5 hours to obtain black Ash, leaching three times in countercurrent with water to obtain leaching solution A and leaching residue a, and then leaching another part of black ash with leaching solution A countercurrently to obtain leaching solution B and leaching residue b, and using leaching solution B Leach the third part of black ash again to obtain leaching solution C and leaching residue c; combine leaching residues a, b, and c to be total leaching residues and stack them; obtained leaching solution C has a Sr content (calculated as SrS) of 50 ~200g / L yellow water.

[0022] Get 3 liters of yellow water containing SrS 153g / L, place in a batch reactor with stirring, add 136g industrial solid soda ash soda ash reaction (solid soda ash is added continuously by screw feeder), temperature of...

Embodiment 2

[0024] Example 2, mixing celestite ore powder with a strontium sulfate content of 55 to 70% and reduced coal powder in a weight ratio of 1:1 to 1:1.5, and roasting at a temperature of 1100 to 1200°C for 4 to 5 hours to obtain black Ash, leaching three times in countercurrent with water to obtain leaching solution A and leaching residue a, and then leaching another part of black ash with leaching solution A countercurrently to obtain leaching solution B and leaching residue b, and using leaching solution B Leach the third part of black ash again to obtain leaching solution C and leaching residue c; combine leaching residues a, b, and c to be total leaching residues and stack them; obtained leaching solution C has a Sr content (calculated as SrS) of 50 ~200g / L yellow water.

[0025] Get 3 liters of yellow water containing SrS 50g / L (0.4417mol / L) and place in a stirred batch reactor, then add 40% industrial liquid soda ash of 492mL to react (liquid soda ash is metered by a head t...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention offers a new kind of method producing strontium carbonate using lazurite mineral as raw material. Mix lazurite breeze with reduced iron powders in certain proportion to get black ash, dip black ash in water of opposite flow and get strontium carbonate solution; regard calcined soda as carburizer, make them reactivate at temperature of 90-100deg.C under mixing to form slurry including deposition of strontium carbonate and sodium sulfide solution of low iron, and get deposition of strontium carbonate and sodium sulfide solution of low iron through separating solid and liquid, absterge strontium carbonate with water of opposite flow for 3-5 times, dry it and get product of strontium carbonate of high quality; Mother liquor absterging strontium carbonate for the first time mixes with centrifugal mother liquor of slurry of strontium carbonate and the mixed solution is vaporized by cold boiler which regards heat transfer oil as medium, get byproduct of sodium sulfide of low iron. The producing craft of the invention is simple, the procedure is short with low cost, the investment of equipment is small, quality of main product and byproduct is high, it has a good economical effect.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a method for preparing high-quality strontium carbonate, in particular to a method for producing high-quality strontium carbonate products using celestite ore as a raw material. Background technique [0002] Strontium carbonate is the most important strontium salt product, which is mainly used in the production of color display glass bulbs, magnetic materials, pyrotechnics, etc. The application fields involve electronics, materials, chemical industry, sugar, metallurgy, military industry, etc. The production technology of strontium carbonate mainly comprises black ash method (being carbon reduction method) and metathesis method, but because metathesis method needs to consume a large amount of chemical products (acid, alkali, salt etc.), technological process is long, and product purity is lower, and cost is relatively high. High disadvantages, rarely used in industrial production. ...

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): C01F11/18
Inventor 龙光明王树轩祁米香李坤张光辉
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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