Study On The Extraction And Interface Behaviur Of Thorium With SO₃H Silica And N1923

China is a big country of rare earth, minerals containing rare earth elements in nature there are more than250kinds.Only aboutlO species of rare earth minerals are used in industrial.In order to obtain pure rare earth,Extraction and separation is one of the main means of separation. Many emerging extraction agent asked the city to make the extraction technology has improved so.Solvent extraction has many years of studying history.At the same time,in the study of solvent extraction, researchers also noticed the two-phase interfacial phenomena.The main researches are as follow:1.Selection of pure Silica, By changing the pH value of the aqueous phase of the experiment, temperature, time, experimental conditions to study its performance.2.Using SO3H Silica with a functional group to achieve the extraction Separation of thorium and rare earths.By changing the pH value of the aqueous phase of the experiment, temperature, time, experimental conditions to study its performance.3. We measured primary amine N1923extraction of thorium (IV) in the process of interfacial tension with the SVT20Spinning Drop Video Tensitometer. By changing the pH value of the aqueous phase, extract the reaction temperature, extraction time to explore the variation of interfacial tension in the extraction process.