Simultaneous process of electroreducing ytterbium and oxidizing cerium

An electrolysis method and cerium oxide technology, which are applied in the improvement of process efficiency, instruments, optics, etc., can solve the problems of not considering the utilization of cathode electric energy, short process flow, non-compliance, etc., and achieve easy control, simple process, and avoidance of consumption. Effect

An electrolysis method and cerium oxide technology, which are applied in the improvement of process efficiency, instruments, optics, etc., can solve the problems of not considering the utilization of cathode electric energy, short process flow, non-compliance, etc., and achieve easy control, simple process, and avoidance of consumption. Effect

CN1986895AInactive Publication Date: 2007-06-27北京方正稀土科技研究所有限公司 +2
1 Cites 5 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Simultaneous process of electroreducing ytterbium and oxidizing cerium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] A. Preparation of cathode solution: add water to the carbonate of thulium, ytterbium, and lutetium concentrates, and then dissolve them with sulfuric acid to prepare a sulfuric acid solution of a mixture of thulium, ytterbium, and lutetium, with a concentration of 0.1965mol / L. Adjust the solution The pH is 0.60;

[0027] B. Preparation of anode solution: After adding cerium-rich carbonate to water for slurry adjustment, dissolve it with sulfuric acid to prepare a cerium carbonate solution with a concentration of 0.2758mol / L and Ce / REO of 61.11%, [H + ] is 2.0mol / L;

[0028] C. get 1000ml thulium ytterbium lutetium sulfuric acid solution and 1000ml cerium sulfate solution respectively, drop into electrolyzer cathode chamber 14 and anode chamber 13;

[0029] D. Electrolysis: the negative electrode is metallic mercury, and the anode is a diamond-shaped reticular ruthenium-iridium-titanium alloy. Under the situation of 20° C., start the stirring device 15 of the negative e...

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 is one electrolytic process of reducing Yb, enriching Tu and Lu, and oxidizing Ce simultaneously. The electrolytic process reduces Yb into bivalent Yb ion in the cathode chamber so as to separate out Yb from the enriched Yb, Tu and Lu; oxidizes Ce into four-valent ion so as to separate out Ce. The electrolytic equipment has cathode of metal mercury or amalgam, anode of inert metal, anion exchange membrane to separate the anode chamber from the cathode chamber, cathode solution of sulfuric acid solution of pH 0.1-4.0 with enriched Yb, Tu and Lu, and anode solution of sulfuric acid solution of acidity 0.01-3.0 mol / L with enriched Ce. The present invention has low production cost, best utilization of electrolytic current and other advantages.

Description

technical field [0001] The invention relates to a method for electrolytically reducing ytterbium to enrich thulium and lutetium while oxidizing cerium. Background technique [0002] my country's unique southern mines are rich in heavy rare earth resources, but at present, thulium, ytterbium, and lutetium concentrates are mainly separated by extraction, chromatography, and reduction methods. The extraction method is a commonly used method in the world and can obtain high-purity oxides. However, this method takes up a large amount of extractant and the process is complicated, which makes the production cost high. Chromatography includes extraction chromatography and ion exchange chromatography. Extraction chromatography is used to directly prepare high-purity thulium and lutetium from thulium, ytterbium, and lutetium enriched materials. Due to the high content of ytterbium, the yield is low and the yield is low. The rate is low and the cost is high. The reduction method is t...

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
27 Jun 2007
Publication
CN1986895A
IPC
C25C1/22; C25C1/24
CPC
Y02P10/20
Inventors
张玻; 贾江涛