Reference

Fabrication of high-density thorium dioxide fuel pellets from freeze-dried granular feed (AWBA development program)

Fabrication of high-density thorium dioxide fuel pellets from freeze-dried granular feed (AWBA development program). Burke, T. J. (Bettis At. Power Lab., West Mifflin, PA, USA). Report, WAPD-TM-1524; Order No. DE83017631, 19 pp. Avail. NTIS From: Energy Res. Abstr. 1983, 8(21), Abstr. No. 51157 (English) 1982. DOCUMENT TYPE: Report CA Section: 71 (Nuclear Technology) Free-flowing thoria [1314-20-1] granules were prepd. by freeze-drying and calcining Th nitrate [13823-29-5] microspheres.There are some commonly used reagents with their cas registry numbers 13823-29-5 and 1314-20-1 in this article. The high d. fuel pellets could be produced by using the freeze-dried thoria granules and the press-sinter process for pellet fabrication. The use of freeze-dried powders offers the potential for substantial simplification of the conventional pellet fabrication process and is directly applicable for use in remote operated facilities needed for nuclear fuel refabrication. .

Bipolar membranes with separate anion and cation exchange films

Bipolar membranes with separate anion and cation exchange films. Simons, Raymond Gary (Unisearch Ltd., Australia). Brit. UK Pat. Appl. GB 2122543 A1 18 Jan 1984, 11 pp. (English). (United Kingdom). CODEN: BAXXDU. CLASS: IC: B32B007-02; B01D013-04. ICA: B32B027-08; B32B031-12; B32B033-00. APPLICATION: GB 83-16865 21 Jun 1983. PRIORITY: AU 82-4538 22 Jun 1982. DOCUMENT TYPE: Patent CA Section: 47 (Apparatus and Plant Equipment) Section cross-reference(s): 49 Low elec.Several reagents with their cas registry numbers 13823-29-5 and 7785-87-7 are used here. resistance bipolar membranes are produced by joining together sep. anion exchange and cation exchange films. The interface of the 2 membranes is chem. treated to incorporate chem. substances into the interface of the 2 ion exchange regions, whereby the elec. resistance of the resultant bipolar membrane is lowered. Such membrane are esp. useful in the manuf. of acid and alkalies. Thus, Negev Institute anion and cation exchange membranes were dipped into 10% FeCl3 soln. and pressed together at room temp. The p.d. across the membrane when used for sepn. of 1 M KCl soln. at room temp. was 1.7 V when the c.d. was 100 mA/cm2, as compared 3V for a bipolar membrane formed from the same unipolar membrane at the same current and electrolyte concn. .