Abstract: According to various example embodiments, a data management method of an electronic device includes obtaining selection information on or regarding a first product, obtaining selection information on a second product corresponding to the first product based on the selection information on the first product, identifying purchase information about the first product and the second product, transmitting the purchase information about the first product to a first server related to delivery of the first product and transmitting the purchase information about the second product to a second server, and transmitting activation-related information of the second product to the second server in response to delivery status information of the first product, wherein the first product includes a physical product requiring delivery, and the second product includes an insurance product for the first product.

Abstract: The present disclosure relates to a method for separating yttrium oxide from a high-yttrium rare earth ore by a grouping manner and a method for separating yttrium oxide from a medium-yttrium and europium-rich rare earth ore by a grouping manner, and belongs to the technical field of rare earth extraction and separation. The separating method by a grouping manner according to the present disclosure have advantages such as being advanced and reasonable, short process, low production cost, good adaptability, and easy operation and control. The method has better overall technical and economic indicator performance than the naphthenic acid process and has the value of practical application.

Abstract: The present invention relates to a process of separating and purifying thorium by solvent extraction, comprising: 1) mixing a thorium enrichment with an inorganic acid to produce a feed; 2) mixing a neutral phosphorus extractant with an organic solvent to obtain an organic phase; 3) extracting from the feed with the organic phase to obtain a loaded organic phase; 4) scrubbing the loaded organic phase with a scrubbing solution and then back-extracting thorium with a stripping solution to obtain a thorium solution; 5) mixing the thorium solution with an oxalate to obtain a precipitate, which is then sintered to obtain thorium oxide. The present process allows to increase the purity of thorium from 80%-99% to 99.99% or more with a yield of more than 98%.