Method for extracting and separating beryllium
An extraction and ion technology, which is applied in the field of extraction and separation of beryllium, can solve the problems of many extraction stages, poor aluminum removal effect, and inability to remove aluminum, etc., and achieve good separation effect, few extraction stages, and high recovery rate of beryllium
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Embodiment 1
[0012] The beryllium-containing feed liquid of a low-grade compound ore has a main component content of Be 5g / L, Fe 9g / L, and Al 3g / L. Mix the organic phase with a volume ratio of 15% naphthenic acid-15% octanol-70% kerosene with the beryllium-containing feed solution at O:A=3:1, and dropwise add ammonia water with a concentration of 0.6mol / L to the pH during the stirring process =5.2, stop stirring, stand and separate layers, analyze and record that Be in the water phase is 0.05g / L, and the beryllium extraction rate reaches 99% through calculation; discharge the water phase, then press the organic phase and sulfuric acid solution O: A=0.15: 1. Back-extract the organic phase with a sulfuric acid solution with a concentration of 0.6mol / L. After mixing evenly, stop stirring, let it stand for stratification, and discharge the water phase; finally, according to the organic phase and sodium hydroxide solution O:A=0.13:1 , use a sodium hydroxide solution with a concentration of 2.8m...
Embodiment 2
[0014] Same as Example 1, the volume ratio of the organic phase is 25% naphthenic acid-25% isooctyl alcohol-50% kerosene, the organic phase is mixed with the beryllium-containing material liquid O: A=5: 1, and the concentration added dropwise in the stirring process is 6mol / L sodium hydroxide solution to pH = 7.5, stop stirring, stand and separate layers, analysis and measurement of Be in the water phase is 0.02g / L, calculated beryllium extraction rate is higher than 99%. Drain the water phase, then add the hydrochloric acid solution with a concentration of 5mol / L to the organic phase according to the organic phase and hydrochloric acid solution O:A=5:1, after mixing evenly, stop stirring, let stand to separate layers, and drain the water phase; finally press The organic phase and the sodium hydroxide solution are O:A=5:1, and the organic phase is back-extracted with a sodium hydroxide solution with a concentration of 6mol / L. After mixing evenly, stop stirring, leave to stand f...
Embodiment 3
[0016] The beryllium-containing feed liquid of a low-grade composite ore has a composition content of Be 2g / L, Fe 5g / L, and Al 6g / L. Mix the organic phase with a volume ratio of 25% naphthenic acid-15% octanol-60% kerosene with the beryllium-containing material liquid according to O:A=0.6:1, and dropwise add a concentration of 3mol / L sodium carbonate solution to When pH=6.0, stop stirring, let stand to separate, analyze and measure the Be in the water phase to be 0.01g / L, and calculate the beryllium extraction rate to 99.5%, discharge the water phase; then press the organic phase and sulfuric acid solution according to O: A= 2:1, back-extract the organic phase with a sulfuric acid solution with a concentration of 3mol / L, after mixing evenly, stop stirring, let it stand for stratification, and discharge the water phase; finally, according to the organic phase and ammonium carbonate aqueous solution O:A=2:1, Back-extract the organic phase with an aqueous ammonium carbonate solut...
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