A dissymmetric RN,N-dialkylamides of formula (I) in which: R.sup.1 represents a linear C.sub.1 to C.sub.4 alkyl, R.sup.2 represents a linear C.sub.1 to C.sub.10 alkyl, and R.sup.3 represents a linear or branched C.sub.6 to C.sub.15 alkyl, where R.sup.3 is different from a n-octyl, n-decyl, n-dodecyl, 2-ethylhexyl and 2-ethyloctyl group when R.sup.1 represents a n-butyl group and R.sup.2 represents an ethyl group. A method for synthesising the N,N-dialkylamides, and uses of same for extracting uranium and/or plutonium from an aqueous acid solution or for fully or partially separating the uranium from the plutonium contained in an aqueous acid solution and a solution resulting from the dissolution of spent nuclear fuel in nitric acid. A method for treating an aqueous solution resulting from the dissolution of spent nuclear fuel in nitric acid, which allows the uranium and the plutonium contained in the solution to be extracted, separated and decontaminated in a single cycle.

The present disclosure provides systems and methods for fast molten salt reactor fuel-salt preparation. In one implementation, the method may comprise providing fuel assemblies having fuel pellets, removing the fuel pellets and spent fuel constituents from the fuel assemblies, granulating the removed fuel pellets or process feed to a chlorination process, processing the granular spent fuel salt into chloride salt by ultimate reduction and chlorination of the uranium and associated fuel constituents chloride salt solution, enriching the granular spent fuel salt, chlorinating the enriched granular spent fuel salt to yield molten chloride salt fuel, analyzing, adjusting, and certifying the molten chloride salt fuel for end use in a molten salt reactor, pumping the molten chloride salt fuel and cooling the molten chloride salt fuel, and milling the solidified molten chloride salt fuel to predetermined specifications.

The present invention relates to a method of separating radioactive elements from a mixture, wherein the mixture is treated with at least one alkanesulfonic acid and at least one further acid, selected from the group consisting of hydrochloric acid, nitric acid, amidosulfonic acid and mixtures thereof and also the use of at least one alkanesulfonic acid and at least one further acid for separating radioactive elements from mixtures comprising these.

The present disclosure relates to nuclear chemical, particularly radiochemical, technologies at different stages of the nuclear fuel cycle, such as the production of purified nuclear materials (uranium, zirconium) or the reprocessing of spent nuclear fuel from nuclear power stations, in which extraction processes and operations for purifying nuclear materials are used. An example method, which includes the partial decomposition of nitric acid during continuous evaporation while a solution containing a reducing agent is fed into the bottom part of an evaporator having a circulating bottoms solution, consists in that the process is carried out such that the solution is kept in the bottom part of the evaporator for more than 2 hours under the addition of an aqueous solution of formaldehyde and formic acid (hereinafter “the mixture”) or a solution of formic acid after the process has been started using the mixture.

An expeditionary additive manufacturing (ExAM) system [10] for manufacturing metal parts [20] includes a mobile foundry system [12] configured to produce an alloy powder [14] from a feedstock [16], and an additive manufacturing system [18] configured to fabricate a part using the alloy powder [14]. The additive manufacturing system [18] includes a computer system [50] having parts data and machine learning programs in signal communication with a cloud service. The parts data [56] can include material specifications, drawings, process specifications, assembly instructions, and product verification requirements for the part [20]. An expeditionary additive manufacturing (ExAM) method for making metal parts [20] includes the steps of transporting the mobile foundry system [12] and the additive manufacturing system [18] to a desired location; making the alloy powder [14] at the location using the mobile foundry system; and building a part [20] at the location using the additive manufacturing system [18].

Embodiments provide methods of disassembling an apparel product. The methods include exposing an adhesive of the apparel product to heat or electromagnetic energy. The adhesive is disposed at least partially disposed between a major component and a minor component of the apparel product. The adhesive includes a shape memory material. The major component forms a base portion of the apparel product and is configured to be supported and worn at least partially over a portion of a wearer. The minor component forms a secondary portion configured to be coupled to the major component with the adhesive. The methods include separating the major component from the minor component adjoined by the adhesive.

A method for manufacturing small adaptive engines uses a battlefield repository having cloud services that is configured to enable additive manufacturing (AM) of engine parts and assemblies. The method also uses a compilation of recipes/signatures for building the engine parts and the assemblies using additive manufacturing (AM) processes and machine learning programs. An additive manufacturing system and an alloy powder suitable for performing the additive manufacturing (AM) processes can be provided. In addition, the engine parts can be built using the additive manufacturing (AM) system, the alloy powder, the battlefield repository and the compilation of recipes/signatures. A system for manufacturing small adaptive engines includes the battlefield repository, the compilation of recipes/signatures, a foundry system for providing the alloy powder and an additive manufacturing (AM) system configured to perform the additive manufacturing (AM) processes.

Aspects of the disclosure relate to apparatus and methods for producing a downhole electrical component, having steps of providing a non-conductive polymer substrate, establishing an active area on the non-conductive polymer substrate, patterning the active area on the non-conductive polymer substrate with a conductive material through an additive manufacturing process and incorporating the patterned non-conductive polymer substrate into a final arrangement.

Disclosed is a single-chamber furnace for fuming an evaporable metal or metal compound from a metallurgical charge including a bath furnace for containing a molten charge up to a determined level, the furnace being equipped with a non-transferred plasma torch for the generation of plasma and a first submerged injector for injecting the plasma below the determined level, the furnace further including an afterburning zone to form an oxidized form of the at least one evaporable metal or metal compound, and a recovery zone for recovering the oxidized form from the gas formed in the afterburning zone, whereby the furnace is further equipped with a second submerged injector for injecting extra gas into the furnace below the determined level. Further disclosed is the use of the furnace and a process for fuming an evaporable metal or metal compound from a metallurgical charge.

A roller treatment process and a treatment device suitable for a total-amount steel slag treatment. The treatment process is: firstly, a slag tank (2) with the molten slag is tightly held by a slag tank tilting mechanism and moved to a slag inlet position, the slag tank (2) is tilted to pour the molten slag with good fluidity into a rotary roller device (5) through a feeding chute (51), so that a roller treatment is achieved; secondly, when the steel slag (3) without fluidity in the slag tank (2) cannot flow out, a slag removal machine (4) is used for pushing the high-viscosity slag or the solid slag into the roller device (5); and thirdly, the slag tank (2) is reversed by a large angle tilting to make the slag at the bottom of the tank drop into the roller device (5), so that the total-amount steel slag treatment of the same roller device (5) is achieved. The treatment device comprises a feeding system, the roller device (5), a particle slag conveying and storage system (7), a tail gas emission and purification system (6), a cooling water circulation system (8), a cold steel cleaning mechanism (10) and an electric control system (9); and the feeding system comprises the slag tank tilting mechanism (1), the slag tank (2), the molten slag (3) and the slag removal machine (4).