13results about "Thorium compounds" patented technology

This invention discloses a Th / Ra generator containing natural thorium and its production. 224 The Ra method. The generator of this invention includes a cation exchange resin column and bottles I to VI; wherein bottle I is filled with the stock solution; bottle III is filled with deionized water; bottle IV is filled with 4.0–6.0 M nitric acid; bottles II, V, and VI are empty; bottle V is a specially designed collection bottle with an extraction resin column at its opening for collection. 224 Ra. The method of the present invention includes the following steps: 1) using a mixture containing 228 1) A natural thorium mixture of Th and Ra was concentrated to obtain a concentrate, and then the pH of the system was adjusted to serve as the packing stock solution for the Th / Ra generator; 2) The stock solution was passed through a cation exchange resin column to obtain a cation exchange resin column loaded with thorium. 224 Ra, and collect the eluent from the original solution for later use; 3) Elute the cation exchange resin column with inorganic acid. 224 Ra, then the eluent is collected using a special collection bottle to obtain... 224 Ra. This invention enables the separation, purification, and recycling of [product name]. 224 Ra, to overcome 228 Th / 224 The Ra generator has a stringent loading process to avoid the radioactive risks associated with handling tons of natural thorium.

The present disclosure provides a simple and versatile process suitable for large-scale production of alpha emitters. It does not require irradiation of the source material and it is based on aqueous solutions and a strong cation exchange resin.

Methods of processing phosphogypsum (PG) to recover Radium (e.g., 226Ra), and / or other constituents from PG, are described. PG (stockpiled PG, fresh PG or a combination) is combined with a leach solution, allowed to react for 2-6 hours (e.g., a single leaching step), at a temperature in the range of about 40-70 °C to obtain leachate and leach residue. Further processing by subjecting the leachate and / or the leach residue to one or more separation techniques, such as ion exchange, enables the recovery of one or more constituents of interest. By separating 226Ra, rare earth elements (REE) and / or other constituents from this secondary resource (e.g., waste PG), gypsum can be purified for use in the construction industry, the recovery of 226Ra can be used to produce dedicated isotopes like 223Ra and / or 223 Ac for life-saving cancer medication, and raw materials can be provided for the high-tech industry, agriculture and the building industry.

The invention discloses a synthesis method and application of a layered NH4V4O10 adsorbing material for selectively adsorbing 228Ra and 224Ra. LiOH is used as a mineralizing agent, and layered NH4V4O10 is prepared through a hydrothermal synthesis method; the NH4V4O10 adsorbent with a layered structure is obtained through material design and screening, the interlayer spacing of the NH4V4O10 adsorbent reaches the angstrom level, and the NH4V4O10 adsorbent can show excellent selectivity to Ra (II) in a Th (IV) / Ra (II) binary medium through the ion size recognition effect.

This invention provides a method for 226 Ra and 210 This invention relates to the field of radioactive ion extraction and separation, specifically a composite membrane for Pb separation, its preparation method, and its applications. The method includes the following steps: mixing polyacrylonitrile, crown ether, and an ionic liquid to obtain a spinning solution; spinning this solution to form a composite membrane. This invention enables the separation of Pb from uranium ore digestion solutions. 226 Ra and 210 The effective extraction and separation of Pb reduces radioactive pollution in the environment and enables the recycling of environmental resources. At the same time, the preparation method is simple and low-cost, and the resulting composite membrane is non-toxic and harmless, which is conducive to industrial application.

Methods of processing phosphogypsum (PG) to recover Radium (e.g., 226Ra), and / or other constituents from PG, are described. PG (stockpiled PG, fresh PG or a combination) is combined with a leach solution, allowed to react for 2-6 hours (e.g., a single leaching step), at a temperature in the range of about 40-70° C. to obtain leachate and leach residue. Further processing by subjecting the leachate and / or the leach residue to one or more separation techniques, such as ion exchange, enables the recovery of one or more constituents of interest. By separating 226Ra, rare earth elements (REE) and / or other constituents from this secondary resource (e.g., waste PG), gypsum can be purified for use in the construction industry, the recovery of 226Ra can be used to produce dedicated isotopes like 223Ra and / or 225Ac for life-saving cancer medication, and raw materials can be provided for the high-tech industry, agriculture and the building industry.

Methods of processing phosphogypsum (PG) to recover Radium (e.g., 226Ra), and / or other constituents from PG, are described. PG (stockpiled PG, fresh PG or a combination) is combined with a leach solution, allowed to react for 2-6 hours (e.g., a single leaching step), at a temperature in the range of about 40-70° C. to obtain leachate and leach residue. Further processing by subjecting the leachate and / or the leach residue to one or more separation techniques, such as ion exchange, enables the recovery of one or more constituents of interest. By separating 226Ra, rare earth elements (REE) and / or other constituents from this secondary resource (e.g., waste PG), gypsum can be purified for use in the construction industry, the recovery of 226Ra can be used to produce dedicated isotopes like 223Ra and / or 225Ac for life-saving cancer medication, and raw materials can be provided for the high-tech industry, agriculture and the building industry.

Systems and methods for generating radionuclides, such as radium-224. Systems herein may include a first cartridge having a first opening, a second opening, and a chamber therebetween having a first resin having affinity for thorium-228 and bismuth-212; a second cartridge having a first opening, a second opening, and a chamber therebetween having a second resin having affinity for thorium-228 and bismuth-212, a third cartridge having a first opening, a second opening, and a chamber therebetween comprising a third resin having affinity for thorium-228 and bismuth-212, a fourth cartridge having a first opening, a second opening, and a chamber therebetween having a third resin having affinity for lead-212; wherein a continuous flow path is formed from a top of the first cartridge though the second cartridge, through the third cartridge, and to a bottom of the fourth cartridge during system use.

Methods of processing phosphogypsum (PG) to recover Radium (e.g., 226Ra), and / or other constituents from PG, are described. PG (stockpiled PG, fresh PG or a combination) is combined with a leach solution, allowed to react for about 2-6 hours (e.g., a single leaching step), at a temperature in the range of about 40-70° C. to obtain leachate and leach residue. Further processing by subjecting the leachate and / or the leach residue to one or more separation techniques, such as ion exchange, enables the recovery of one or more constituents of interest. By separating 226Ra, rare earth elements (REE) and / or other constituents from this secondary resource (e.g., waste PG), gypsum can be purified for use in the construction industry, the recovery of 226Ra can be used to produce dedicated isotopes like 223Ra and / or 225Ac for life-saving cancer medication, and raw materials can be provided for the high-tech industry, agriculture and the building industry.

Systems and methods for generating radionuclides, such as radium-224. Systems herein may include a first cartridge having a first opening, a second opening, and a chamber therebetween having a first resin having affinity for thorium-228 and bismuth-212; a second cartridge having a first opening, a second opening, and a chamber therebetween having a second resin having affinity for thorium-228 and bismuth-212, a third cartridge having a first opening, a second opening, and a chamber therebetween comprising a third resin having affinity for thorium-228 and bismuth-212, a fourth cartridge having a first opening, a second opening, and a chamber therebetween having a third resin having affinity for lead-212; wherein a continuous flow path is formed from a top of the first cartridge though the second cartridge, through the third cartridge, and to a bottom of the fourth cartridge during system use.

METHOD FOR PURIFYING RADIUM FROM BARIUM AND IMPURITIES IN AQUEOUS SOLUTION. The present invention relates to a method for separating radium from barium by selective chromatographic separation. Figure for abstract: None

The present invention relates to a method for the preparation of mixed rare earth metal carbonates from monazite, this method comprising a first leaching with an alkaline hydroxide and a two-step second leaching in the presence of hydrochloric acid.

The utility model discloses a laser preparation device. The laser preparation device comprises a laser conversion device and a laser purification device, wherein the laser conversion device comprises a dissolving container and suction filtration equipment; the dissolving container is integrated with an ultrasonic vibration heating unit, a feeding unit is arranged outside the dissolving container, and a separation unit is arranged at a discharge port of the dissolving container; the feeding unit is connected with the dissolving container; the input end of the separation unit is connected with the discharge hole of the dissolving container, and the output end of the separation unit is provided with suction filtration equipment; the input end and the output end of the suction filtration equipment are respectively connected with the separation unit and the radium purification device. According to the laser preparation device, the ultrasonic vibration heating unit is integrated in the dissolving container, mass transfer can be enhanced through mechanical vibration, the reaction rate can be increased through heating, a liquid film on the surface of radium sulfate is damaged through the ultrasonic cavitation effect, diffusion of carbonate ions is accelerated, and heating is matched to promote chemical reaction equilibrium to move in the direction of generating radium carbonate; therefore, the conversion rate is improved, and the problems that an existing device is low in conversion efficiency and incomplete in conversion are solved.