Solid extracting agent with high dynamic exchange capacity for extraction of scandium and method of its production

• Main Authors: Rychkov, Vladimir Nikolaevich, Tretiakov, Vitalii Aleksandrovich, Gadzhiev, Gadzhi Rabadanovich, Poponin, Nikolai Anatolevich, Kondrutskii, Dmitrii Alekseevich, Kirillov, Sergey Vladimirovich, Smyshliaev, Denis Valerevich, Kirillov, Evgenii Vladimirovich, Bunkov, Grigory Mikhailovich, Vostrov, Evgenii Sergeevich
• Format: Patent
• Language: English
• Published: 22.11.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; FERROUS OR NON-FERROUS ALLOYS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF ALLOYS OR NON-FERROUS METALS; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention relates to a composition and method for producing a solid extracting agent for extraction of scandium from sulfuric acid solutions.There is provided a solid extracting agent (Solex) for extraction of scandium from scandium-containing solutions comprising a styrene-divinylbenzene matrix with di-(2-ethylhexyl) phosphoric acid. The extracting agent further comprises tri-n-octylphosphine oxide, tributyl phosphate, isododecane, in the following ratio of components, wt. %: di-(2-ethylhexyl) phosphoric acid 32.0-37.5, tri-n-octylphosphine oxide 4.2-8.0, tributyl phosphate 0.8-1.7, isododecane 16.7-20.0, the remainder styrene-divinylbenzene, with the styrene/divinylbenzene ratio in the matrix equal to 75-80 to 20-25 wt. %. There is also provided a method of producing the Solex. The technical result is the production of a scandium-selective Solex with a high dynamic exchange capacity.