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Extracting agent for extracting germanium and gallium and extraction method using same

An extraction agent and extraction technology, applied in the direction of improving process efficiency, etc., can solve the problems of high melting point, high price, uneconomical reagent amount, etc.

Active Publication Date: 2012-05-02
BEIJING GENERAL RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of Kelex100 is that the extraction is carried out under high sulfuric acid concentration, the equilibrium time of back extraction is very long, more than 0.5h, and the back extraction temperature should be above 40°C
In addition, the synthesis of Kelex100 is difficult and expensive. The industrial practice of Rhoxepoulenc in France shows that the amount of gallium recovered by the Kelex100 extractant and the amount of reagents consumed are not economical.
[0005] H106, YW100 and G315 are the first hydroxamic acid extractants proposed in my country to extract gallium and germanium. Practice shows that H106, YW100 and G315 and other extractants have strong extraction capabilities for gallium and germanium, but there are problems such as high melting point, high water solubility, and The extract formed by gallium and germanium has low oil solubility and is prone to the disadvantages of the third phase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Extraction of Germanium with O,O-Diisooctylphosphorus Hydroxamic Acid

[0029] (1) Extraction conditions

[0030] Germanium extraction liquid composition: Ge 0.12g / L, Ga 0.33g / L, Zn 28.5g / L, Fe 3.75g / L, H 2 SO 4 45g / L.

[0031] The organic phase consists of:

[0032] Extractant: O,O-Diisooctylphosphohydroxamic acid, 10% (v / v)

[0033] Modifier: Isooctanol, 5% (v / v)

[0034] Thinner: 260 # Sulfonated kerosene, 85% (v / v).

[0035] Compared with: O / A=1:2

[0036] Mixing time: 3min.

[0037] (2) Extraction experiment results

[0038] The phase separation time is 4min., the distribution ratio of germanium in the organic phase and the aqueous phase is 69.4, and the extraction rate is 97.2% of the comparison index.

Embodiment 2

[0052] Extraction of Gallium with O,O-Diisooctyl Phosphorus Hydroxamic Acid

[0053] (1) Extraction conditions

[0054] Gallium extraction liquid composition Ge 0.001g / L, Ga 0.33g / L, Fe 2.62g / L, H 2 SO 4 4.9g / L.

[0055] The organic phase consists of:

[0056] Extractant: O,O-Diisooctylphosphohydroxamic acid, 10% (v / v)

[0057] Modifier: Isooctanol, 5% (v / v)

[0058] Thinner: 260 # Sulfonated kerosene, 85% (v / v).

[0059] Compared with: O / A=1:2

[0060] Mixing time: 5min

[0061] (2) Extraction result

[0062] The phase separation time is 4min., the distribution ratio of gallium in the organic phase and the aqueous phase is 60.5, and the extraction rate of gallium is 96.8%.

[0063] Comparative example G315-P204 extracts gallium

[0064] (1) Extraction conditions

[0065] Gallium extraction liquid composition Ge 0.001g / L, Ga 0.33g / L, Fe 2.62g / L, H 2 SO 4 4.9g / L.

[0066] The organic phase consists of:

[0067] Extractant: G315 and P204 (O, O-dialkyl p...

Embodiment 3

[0075] Extraction of Germanium with O,O-Dihexadecylphosphorus Hydroxamic Acid

[0076] (1) Extraction process conditions

[0077] Germanium extraction liquid composition: Ge 0.12g / L, Ga 0.33g / L, Zn 28.5g / L, Fe 3.75g / L, H 2 SO 4 45g / L.

[0078] The organic phase consists of:

[0079] Extractant: O,O-Dihexadecylphosphonohydroxamic acid, 10% (v / v)

[0080] Modifier: Isooctanol, 5% (v / v)

[0081] Thinner: 260 # Sulfonated kerosene, 85% (v / v).

[0082] Compared with: O / A=1:2

[0083] Mixing time: 3min.

[0084] (2) Extraction experiment results

[0085] The phase separation time is 5min., the distribution ratio of germanium in the organic phase and the aqueous phase is 52.1, and the extraction rate is 96.3% of the comparison index.

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PUM

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Abstract

The invention provides an extracting agent for extracting germanium and gallium and an extraction method using the same, relates to a hydrometallurgy extracting agent and in particular relates to an organic extracting agent for extracting germanium and gallium and an extraction method using the same. The extracting agent is characterized in that the extracting agent is O,O-dihydrocarbyl phosphorus hydroxamic acid the molecular formula of which is (RO)2P(O)NHOH, wherein in the formula, R is C5-C18 straight chain or branched chain alkyl, or C4-C14 straight chain or branched chain alkyl-substituted phenyl. The extracting agent provided by the invention has excellent extraction property, strong selectivity, high extraction rate and good phase splitting property on scattered metals such as germanium, gallium and the like. In the invention, O,O-dihydrocarbyl phosphorus hydroxamic acid is used as the extracting agent, so that germanium in an acidic aqueous solution can be extracted and enriched, or gallium in the acidic aqueous solution can be extracted and enriched, thereby realizing the separation of scattered metal germanium or gallium and elements such as zinc, iron, arsenic, manganese, calcium, magnesium and the like; and germanium and gallium in the acidic aqueous solution can also be extracted and separated step by step, thereby realizing the separation and enrichment of germanium and gallium.

Description

technical field [0001] An extractant for extracting germanium and gallium and an extraction method thereof relate to a hydrometallurgical extractant, in particular an organic extractant for extracting gallium and germanium and an extraction method thereof. Background technique [0002] my country is relatively rich in gallium and germanium resources, and the reserves of gallium and germanium rank first in the world. In recent years, with the rapid development of the information industry, the demand for gallium and germanium has also increased rapidly, and the comprehensive recovery of gallium and germanium has attracted widespread attention. Solvent extraction has many advantages in the comprehensive recovery of gallium and germanium. A lot of research has been done on gallium and germanium solvent extraction at home and abroad. The extraction agent is the key to the development of the extraction process. The technical and economic indicators of solvent extraction often depe...

Claims

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Application Information

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IPC IPC(8): C22B3/38C22B41/00C22B58/00
CPCY02P10/20
Inventor 林江顺赵磊王玉芳王海北蒋训雄汪胜东刘三平冯爱玲黄胜蒋应平闫丽李相良苏立峰
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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