Method for suction extraction for separating germanium based on dynamic adsorption method
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A technology of dynamic adsorption and extractant, applied in the direction of improving process efficiency, etc., can solve the problems of serious environmental pollution, complicated production methods, high cost, etc., and achieve the effect of high purity, simple method and low cost
Inactive Publication Date: 2019-01-08
LIAONING UNIVERSITY
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Problems solved by technology
Germanium produced in modern industry mainly comes from the by-products of copper, zinc and lead smelting. The production method is complicated, the yield is low, the cost is high, and the environment is seriously polluted.
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Embodiment 1
[0016] (1) The preparation method of E-44 epoxy acrylic acid extraction resin is as follows:
[0017] 1) Preparation of E-44 epoxy acrylic resin
[0018] In the device, add 60 parts of E-44 epoxy resin, 0.8 parts of catalyst triethylbenzylamine chloride, 0.1 part of polymerization inhibitor p-methoxyphenol, mix well, stir and heat up to 80 °C, and use constant pressure Add 20 parts of acrylic acid dropwise to the dropping funnel, and drop it within 1-2 hours, then raise the temperature to 100°C and react for 2-4 hours. After the acid value is less than 10, stop the reaction, cool down to 80°C, and then add 34 parts Thinner styrene, 34 parts of cross-linking agent triallylamine, and then stirred and reacted for 60-80 minutes to obtain E-44 epoxy acrylic resin for later use.
[0019] 2) E-44 epoxy acrylic extraction resin
[0020] Add 10 parts of E-44 epoxy acrylic resin prepared in step 1), 8 parts of extractant N235, 0.1 part of initiator methyl ethyl ketone peroxide dropwis...
Embodiment 2
[0024] (1) Effect of diameter-to-height ratio on adsorption of germanium
[0025] Method: In a glass tube of D10mm×550mm, first spread a thin layer of absorbent cotton, take the E-44 epoxy acrylic extraction resin prepared in Example 1, put it into the glass tube by wet method, and obtain the diameter-to-height ratio 1:5, 1:10, 1:15, 1:20 and 1:30 E-44 epoxy acrylic extraction resin column. Add 0.5 g of tartaric acid to 100 mL of germanium-containing solution with a concentration of 25 mg / L, mix well, adjust the pH to 1.0, and obtain a mixed solution, and drop the mixed solution into E-44 with an acid burette at a flow rate of 15 drops / min In the epoxy acrylic extraction resin column, collect the effluent, extract the effluent 8 times, collect the final effluent, pipette 1mL to measure the absorbance, and calculate the adsorption rate. The results are shown in Table 1.
[0026] Table 1
[0027] Aspect ratio
[0028] It can be seen from Table 1 that when the diamete...
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Abstract
The invention discloses a method for suction extraction for separating germanium based on a dynamic adsorption method. The method comprises the following steps: filling a glass tube with an epoxy acrylic acid extraction and leaching agent so as to prepare an epoxy acrylic acid extraction and leaching resin column; putting a germanium-containing solution and tartaric acid into a container, uniformly stirring, adjusting the pH value to 1.0-1.5 so as to obtain a mixed solution, dropping the mixed solution into the epoxy acrylic acid extraction and leaching resin column by using an acid buret at aflowing speed of 15-20 droplets/minute, collecting an effluent, and circulating and adsorbing the effluent for 6-8 times. According to the method, an extraction agent is chelated inside an epoxy acrylic acid resin by using a suspension polymerization method, the formed extraction and leaching resin has the advantages of being small in extraction agent loss and recyclable, and in addition, the extraction and leaching resin still has a very high extraction rate after 8-10 times of repeated use. The method disclosed by the invention is simple, low in manufacturing cost, clean and environmental-friendly and good in separation and enrichment effect, and the extraction rate of the method disclosed by the invention can be up to 98% or greater.
Description
technical field [0001] The invention belongs to the technical field of germanium extraction and separation, and in particular relates to the application of an epoxy acrylic acid extraction resin in the extraction and separation of germanium. Background technique [0002] Germanium is a rare metal with good semiconductor properties. It is an indispensable and important element for new functional materials such as compound semiconductors, electro-optical materials, and special alloys. It has great development potential. However, germanium is rarely found in nature. Most of the independent mineral deposits are doped with other elements. Therefore, the extraction and separation process of germanium has become a research hotspot. The germanium produced in modern industry mainly comes from by-products of copper, zinc and lead smelting. The production method is complicated, the yield is low, the cost is high, and the environment is seriously polluted. Contents of the invention ...
Claims
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