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    • 35. 发明申请
    • PRODUCTION OF TECHNETIUM FROM A MOLYBDENUM METAL TARGET
    • 从金属金属目标生产技术
    • WO2012139220A1
    • 2012-10-18
    • PCT/CA2012/050230
    • 2012-04-10
    • THE GOVERNORS OF THE UNIVERSITY OF ALBERTAWILSON, JohnGAGNON, KatherineMCQUARRIE, Stephen
    • WILSON, JohnGAGNON, KatherineMCQUARRIE, Stephen
    • G21G1/00H05H6/00
    • G21G1/001G21G1/10G21G2001/0042H05H6/00
    • Recycling of isotopically enriched molybdenum metal targets that are suitable for the large scale cyclotron production of 99m Tc or 94m Tc includes the charged particle irradiation of an enriched molybdenum metal target to produce a technetium isotope, separation of the technetium isotope following irradiation of the molybdenum, re-claiming the molybdenum metal and reformation of the molybdenum target for a further irradiation step. This process may then be repeated. Separation of the technetium isotope preferably is achieved by oxidative dissolution of the molybdenum thereby removing it from a target support plate, and forming molybdate and pertechnetate. The technetium isotope is isolated by various means, such as the ABEC process. To reuse the molybdenum, additional steps of isolating the molybdate and reducing it back to molybdenum metal are required. The recovered molybdenum metal may then be reformed as a target for example by pressing or pressing and sintering, followed by bonding to a target support plate.
    • 适用于大规模回旋加速器生产99mTc或94mTc的同位素富集的钼金属靶的回收包括富集的钼金属靶的带电粒子照射以产生锝同位素,在钼照射之后分离锝同位素, 要求钼金属和钼靶的再形成用于进一步的照射步骤。 然后可以重复该过程。 锝同位素的分离优选通过钼的氧化溶解实现,从而将其从靶支撑板除去,并形成钼酸盐和高锝酸盐。 锝同位素通过各种方法分离,如ABEC过程。 为了重新使用钼,需要额外的步骤来分离钼酸盐并将其还原成钼金属。 回收的钼金属可以例如通过压制或压制和烧结作为目标进行重整,接着与目标支撑板结合。