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In this presentation the status of technology development on the sol-gel process and the economical use of N-15 enriched nitrogen gas in the nitride fuel fabrication for the transmutation of minor actinides is shown.

Oral presentation

R&D on nitride fuel cycle for MA transmutation to enhance safety and economy, 15; Nitride particles fabrication through external gelation and demonstration of nitrogen circulation refining system prototype model

Iwasa, Toma; Takano, Masahide

no journal, ,

R&D on the application of Sol-Gel method and the economical use of nitrogen-15 enriched gas has been carried out as elemental technologies for MA-bearing nitride fuel fabrication in engineering scale. High purity nitride sphere particles could be successfully fabricated by carbothermic reduction of mixed particles of rare-earth oxide and carbon prepared through external gelation technique. Very high efficiency in the particle nitridation was demonstrated. The lab-scale prototype model of nitrogen circulation refining system that can remove CO gas evolved from nitridation reaction and automatically supply nitrogen gas of the consumed amount is demonstrated. As a result, the system shows the satisfactory performance. An additional function needed for the practical application is considered.

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Effects of gelation and sintering conditions on granulation of Li $_{2}$ TiO $_{3}$ pebbles from Li-Ti complex solution

Preparation of silicon-based oxide layer on high-crystalline SiC fiber as an interphase in SiC/SiC composites

Preparation of source particles for fabricating pellets through sol-gel microsphere pelletization; Preparation of 50m class microspheres of ThO $_{2}$ and (Th,U)O $_{2}$

Sintering behavior of sol-gel (Th,U)O $_{2}$ microspheres

Preparation of ThO $_{2}$ pellets by sol-gel microsphere pelletization

Nuclear fuel

Further study on sintering behavior of sol-gel ThO $_{2}$ microspheres

Preparation conditions and gelation behaviors of ThO $_{2}$ -UO $_{3}$ sols for(Th, U)O $_{2}$ microsphere fabrication

Effect of thorium concentration on ThO $_{2}$ sol preparation under pH control by gaseous ammonia addition method

Production of (Th,U)O $_{2}$ microspheres with uranium content of 035% by sol-gel process using CCl $_{4}$ as gelation media

Preparation of ThO $_{2}$ -UO $_{3}$ sols with uranium contents of 035% for gelation into microspheres in CCl $_{4}$ -ammonia media

Sol-gel method using carbon tetrachloride as drop-formation medium for producing large ThO $_{2}$ -base microspheres

Preparation of (Th,U)O $_{2}$ Keruels by a Sol-gel Process

Study on a fabrication method of nitride fuels for MA transmutation via precursor carbon containing nitrate gel-spheres produced by a wet process using a dehydration reaction

R&D on nitride fuel cycle for MA transmutation to enhance safety and economy, 9; Application of sol-gel process and economical use of N-15 in the fuel fabrication

R&D on nitride fuel cycle for MA transmutation to enhance safety and economy, 15; Nitride particles fabrication through external gelation and demonstration of nitrogen circulation refining system prototype model