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

Method for purifying iron solution by adopting extraction chromatography

A technology for chromatographic separation and purification of iron, which is applied to the improvement of process efficiency, photography technology, instruments, etc., can solve the problem of difficult to achieve deep separation of iron and these impurities, and achieve the reduction of irritating odor, easy equipment, and large equipment capacity Effect

Inactive Publication Date: 2012-03-21
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are difficult to prepare high-purity iron solutions with metal impurities such as Mg, Al, Cr, Mn, Cu, Zn, and Ni less than 10ppm, and it is difficult to achieve deep separation of iron and these impurities even with multi-stage separation

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
  • Method for purifying iron solution by adopting extraction chromatography
  • Method for purifying iron solution by adopting extraction chromatography

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Use 10 kg of water-containing macroporous adsorption resin (purchased from the market, brand HPD-100), and its relevant parameters:

[0034] 1. Particle size: The particle size is 70~150 mesh (0.1-0.2mm) ≥ 90%.

[0035] 2. Average pore diameter: 85-90°A; specific surface 650-700m 2 / g; adsorption flow rate: 1-4BV / h; desorption flow rate: 0.6-2BV / h; desorbent: ethanol or ethanol aqueous solution; desorbent dosage: 2-3 BV.

[0036] The P204 extraction agent is adsorbed on the macroporous adsorption resin by saponification and adsorption. The specific operation is: put 10 kg of water-containing macroporous adsorption resin into water, add 2 kg of P204 extraction agent, and perform adsorption treatment under stirring conditions , after filtration, 34% P204 extraction resin was prepared, and the resin that absorbed the extractant was wet-packed into a column with a diameter of 80mm and a length of 850mm, and assembled into a P204 extraction resin column. The empty volume i...

Embodiment 2

[0042] Prepare 60% P204 extraction and leaching resin, test operation method is the same as embodiment 1. Add ferric sulfate feed liquid 5 liters, wherein iron concentration is 30 grams / liter, the acidity of feed liquid [H + ] was 1.0 mol / liter, and the P204 extraction resin column was rinsed until the iron concentration of the eluate was about 30 grams / liter, and the color of the chromatographic column changed from colorless to deep red at this moment.

[0043] with [H + ] is 1.0 mol / liter of hydrochloric acid solution as the eluent to wash the iron-loaded P204 extraction resin, and observe that the color of the chromatographic column changes from red to colorless, and the end of the washing is reached. At this time, the sulfuric acid solution with an acidity of 6 mol / L was used instead to quickly elute the iron ions adsorbed in the chromatographic column, and the color of the chromatographic column changed from colorless to red during the process.

[0044] Finally, regener...

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 size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for purifying an iron solution by adopting extraction chromatography. The method comprises the following steps of: (1) extracting the iron solution by using a chromatographic column, namely adsorbing a P204 extracting agent to macroporous absorption resin in a saponification adsorption mode, obtaining P204 extracted resin, performing wet column filling, adding the iron solution, and leaching the P204 extracted resin chromatographic column; (2) leaching with a leaching solution, namely leaching the iron-carrying P204 extracted resin chromatographic column by using an acid solution as the leaching solution; and (3) leaching with a back extraction solution and concentrating, namely leaching with the acid back extraction solution, back extracting the iron in the P204 extracted resin chromatographic column to the aqueous phase, obtaining a high-purity iron salt solution, concentrating the high-purity iron salt solution, performing electrolytic deposition, and performing vacuum smelting on the electrolytic deposition iron obtained at the cathode to obtain a high-purity iron ingot, wherein the purity of the iron is over 4N by glow discharge mass spectrometry. The method is simple in process flow, easy in operation, high in equipment capacity, low in investment and low in consumption of chemical materials.

Description

technical field [0001] The present invention relates to a kind of method for extracting and chromatographically separating and purifying iron solution, specifically a method of using 2-ethylhexyl phosphoric acid (D 2 EHPA, P204) is a process method for extractant to purify iron solution by extraction chromatography to produce high-purity iron solution. Background technique [0002] The key to preparing high-purity iron is the deep purification of the iron solution, especially to make the content of various metal impurities such as nickel, copper, and manganese in the iron solution less than 10ppm. The purified iron solution is electrowinning to obtain high-purity electrolytic iron, and then the High-purity electrolytic iron is vacuum smelted to obtain high-purity iron ingots with a purity greater than 4N. [0003] The purification methods of iron solution mainly include chemical precipitation, ion exchange and solvent extraction. However, these methods are difficult to pre...

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): C22B3/24C25C1/06
CPCY02P10/20
Inventor 陈松郎书玲张力王力军蔡振平薛红霞
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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