Method for back extraction of germanium from germanium-contained fluosilicic acid solution

A fluorosilicic acid and extraction technology, applied in the field of hydrometallurgy, can solve the problems of large amount of washing liquid, poor regeneration ability of organic phase, low extraction rate, etc. Effect
CN104789801AInactive Publication Date: 2015-07-22GUIZHOU HONGDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
1 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU HONGDA ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Publication Date
2015-07-22
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to the technical field of hydrometallurgy, in particular to a method for back extraction of germanium from a germanium-contained fluosilicic acid solution. The germanium-contained fluosilicic acid solution is extracted with an N235-kerosene system serving as an organic phase, a sodium hydroxide solution containing ammonium ions is adopted for treating the organic phase, sulfuric acid is added to a back extraction solution to adjust the PH value, then, germanium hydrolysis treatment is performed, obtained precipitate is calcined, germanium is obtained, and the quality of germanium concentrate is further improved, so that in the germanium concentrate, the content of germanium is larger than or equal to 7%, the content of F is smaller than 0.5%, and the content of Si is smaller than 4%; the extraction rate of germanium in germanium-contained fluosilicic acid is increased, and the extraction cost of germanium in the germanium-contained fluosilicic acid solution is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for stripping germanium from a germanium-containing fluorosilicate solution. Background technique

[0002] The raw material containing germanium and high silicon is treated by acid leaching with fluoride, and then produced by tannin precipitation method, which has high production cost and low yield. Therefore, some researchers applied N to the germanium-containing fluorosilicate solution obtained after the germanium-containing high-silicon raw material was treated with fluoride acidic leaching. 235 Ge was extracted under the condition of adding Ge complexing agent, and NaOH solution was used for alkaline stripping. The extraction rate of Ge in this process is all above 90%, but its stripping is not complete, and the purity of stripped germanium is low, and then causes, N 235 The regeneration of the organic phase is not good, and the extraction rate is getting l...

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