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    • 4. 发明申请
    • DETERMINING GAS VOLUME, POROSITY, AND INTRINSIC OXIDATION RATE
    • 确定气体体积,多孔性和内在氧化速率
    • WO2004092690A1
    • 2004-10-28
    • PCT/AU2004/000512
    • 2004-04-16
    • AUSTRALIAN NUCLEAR SCIENCE & TECHNOLOGY ORGANISATIONBENNETT, John, WilliamASKRABA, SretenBOYD, Alan, StanleyGARVIE, Andrew, Mckay
    • BENNETT, John, WilliamASKRABA, SretenBOYD, Alan, StanleyGARVIE, Andrew, Mckay
    • G01F22/02
    • G01N15/0826C22B7/00G01F22/02G01N7/02G01N2015/0873Y02P10/122Y02P10/238
    • The present invention describes a method for measuring the intrinsic oxidation rate of a sample wherein a sample of material is placed in a closable sealable enclosure, the enclosure is closed and sealed, and a first gas pressure is measured in the enclosure. The internal volume of the enclosure is then changed by a known volume and a second gas pressure is measured in the enclosure after said changing as a function of time. It is then determined from said second gas pressure as a function of time whether there is a gas leak from or into said enclosure. Where there is no gas leak, the internal gas volume of the enclosure is determined from the first and second gas pressures and the known volume. The porosity of the sample may then determined from the volume of gas in the enclosure, the volume of the enclosure and the volume occupied by the sample. A change in gaseous oxygen mass in the enclosure is then determined as a function of time and the intrinsic oxidation rate of the sample determined. The invention further describes methods for determining the intrinsic oxidation rate of a plurality of samples, and for determining a spatial distribution of intrinsic oxidation rate within a waste heap, as well as systems for performing the methods of the invention.
    • 本发明描述了一种用于测量样品的固有氧化速率的方法,其中将材料样品放置在可封闭的可密封外壳中,封闭封闭并密封,并且在外壳中测量第一气体压力。 然后将外壳的内部体积改变已知体积,并且在所述改变之后,在时间范围内,在外壳中测量第二气体压力。 然后根据所述第二气体压力作为时间的函数确定是否存在来自或进入所述外壳的气体泄漏。 在没有气体泄漏的情况下,外壳的内部气体体积根据第一和第二气体压力和已知体积确定。 然后可以根据外壳中的气体体积,外壳的体积和样品占据的体积来确定样品的孔隙率。 然后确定外壳中气态氧质量的变化作为时间的函数,并确定样品的固有氧化速率。 本发明还描述了用于确定多个样品的固有氧化速率以及用于确定废物堆内的本征氧化速率的空间分布的方法以及用于执行本发明的方法的系统。