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Method for separating germanium from levextrel resin by adsorptive extraction

A technology of extracting resin and macroporous resin, which is applied in the field of separation and enrichment of germanium, can solve the problems of complicated germanium method, serious environmental pollution, and low economic benefit, and achieve the effect of simple method, high purity, and good separation and enrichment effect

Active Publication Date: 2015-02-18
爱瑞克(大连)安全技术集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of germanium in the prior art has the disadvantages of complex methods, low yield, high cost, serious environmental pollution, and low economic benefits.

Method used

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  • Method for separating germanium from levextrel resin by adsorptive extraction
  • Method for separating germanium from levextrel resin by adsorptive extraction
  • Method for separating germanium from levextrel resin by adsorptive extraction

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The selection of embodiment 1 impregnating agent

[0016] (1) Method

[0017] 1) Preparation of extraction resin: weigh AB-8 macroporous resin, wash with absolute ethanol or ethyl acetate. Take 50g of the cleaned AB-8 macroporous resin and 20g of N235 in a container, add 10mL of ethanol or ethyl acetate and mix well, stir in a water bath at 60°C for 2 hours, heat up to 80°C and evaporate the ethanol or ethyl acetate to dryness. N235 extraction resins treated with different impregnating agents were prepared respectively.

[0018] 2) Adsorption: take 30mL of germanium-containing solution with a concentration of 1mg / mL, add 0.1g of N235 extraction resin treated with different impregnating agents and 0.1g of tartaric acid, adjust the pH to about 2.0 with sulfuric acid, oscillate and stir for 90min, filter, and obtain adsorption N235 extraction resin and raffinate of germanium;

[0019] 3) Elution: Add 10 mL of NH with a concentration of 4 mol / L to the N235 extraction res...

Embodiment 2

[0026] Embodiment 2 The selection of N235 extraction and leaching resin consumption

[0027] (1) Method

[0028] 1) Preparation of the extraction resin: weigh the AB-8 macroporous resin and wash it with absolute ethanol. Take 50g of the washed AB-8 macroporous resin and 20g of N235 in a container, add ethanol and mix well, stir in a water bath at 60°C for 2 hours, heat up to 80°C and evaporate the ethanol to dryness to obtain N235 extraction resin.

[0029] 2) Adsorption: Take 30 mL of germanium-containing solution with a concentration of 1 mg / mL, add N235 extraction resin and the same amount of tartaric acid respectively, adjust the pH to about 2.0 with sulfuric acid, shake and stir for 90 minutes, and filter to obtain N235 extraction resin that adsorbs germanium and raffinate;

[0030] 3) Elution: Add 10 mL of NH with a concentration of 4 mol / L to the N235 extraction resin that adsorbs germanium 4 F eluent for elution, shake and stir for 90min, filter, and take the filtra...

Embodiment 3

[0037] The selection of embodiment 3 eluents

[0038] (1) Method

[0039] 1) Preparation of the extraction resin: weigh the AB-8 macroporous resin and wash it with absolute ethanol. Take 50g of the cleaned AB-8 macroporous resin and N235 in a container, add 10mL of ethanol and mix well, stir in a water bath at 60°C for 2h, heat up to 80°C and evaporate the ethanol to dryness to obtain N235 extraction resin.

[0040] 2) Adsorption: Take 30mL of a germanium-containing solution with a concentration of 1mg / mL, add 0.1g of N235 extraction resin and 0.1g of tartaric acid, adjust the pH to about 2.0 with sulfuric acid, shake and stir for 90min, and filter to obtain N235 extraction resin that adsorbs germanium ;

[0041] 3) Elution: Add 10mL of different eluents to the N235 extraction resin adsorbing germanium for elution, shake and stir for 80-100min, filter, and take the filtrate as the eluent.

[0042] (2) Results

[0043] After the eluent obtained in step 3) was diluted 200 ti...

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Abstract

The invention relates to a method for separating germanium from a levextrel resin by adsorptive extraction. The technical scheme is as follows: the method comprises the following steps: uniformly mixing an AB-8 macroporous resin, N235 and an impregnant, stirring in a 50-70 DEG C water bath for 1-3 hours, and heating to 80 DEG C to dry off the impregnant, thereby obtaining an N235 levextrel resin; putting a germanium-containing solution, the N235 levextrel resin and tartaric acid in a container, regulating the pH value to about 2.0, oscillating and stirring for 80-100 minutes, and filtering to obtain a germanium-adsorbed N235 levextrel resin; and adding an eluting agent into the germanium-adsorbed N235 levextrel resin, oscillating and stirring for 80-100 minutes, filtering, and taking the filtrate. The method is simple, and has favorable separation and enrichment effects; the extraction rate can reach 89% above, and the eluting rate can reach 90% above; and it is proved that the N235 levextrel resin only adsorbs germanium, so the purity is high, and the germanium can be effectively separated from impurity ions.

Description

technical field [0001] The invention relates to a method for separating and enriching germanium, in particular to a method for extracting and separating germanium by extraction and leaching resin. Background technique [0002] Germanium is a rare metal, an important semiconductor material, insoluble in water, hydrochloric acid, and dilute caustic alkali solution. Soluble in aqua regia, concentrated nitric acid or sulfuric acid, molten alkali, alkali peroxide, nitrate or carbonate. Not oxidized in air. Its fine powder can burn in chlorine or bromine. Due to its semiconductor properties, it plays an important role in the development of solid-state physics and solid-state electronics. The development of germanium has great potential. Germanium produced in modern industry mainly comes from by-products of copper, lead and zinc smelting. [0003] The preparation of germanium in the prior art has disadvantages such as complicated method, low yield, high cost, serious environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B41/00C22B3/24
CPCY02P10/20
Inventor 房大维单炜军李静臧树良
Owner 爱瑞克(大连)安全技术集团有限公司
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