公开(公告)号：US4520267A

公开(公告)日：1985-05-28

申请号：US301196

申请日：1981-09-11

申请人： Heikki Sipila ,  Erkki Kiuru ,  Seppo Vaijarvi

发明人： Heikki Sipila ,  Erkki Kiuru ,  Seppo Vaijarvi

IPC分类号： B07C5/34 ,  G01N23/22 ,  G01N23/00

CPC分类号： G01N23/22 ,  G01N2223/05 ,  G01N2223/063 ,  G01N2223/071 ,  G01N2223/084 ,  G01N2223/206 ,  G01N2223/505

摘要： Disclosed is a method and an apparatus for analyzing pieces of ore for the purpose of sorting. Each piece falling by the analyzer is irradiated individually by means of two gamma radiation sources operating at different energy levels so selected that, as to the scattering effect, at one level the Compton effect is predominant and at the other level the Compton effect and the photoelectric effect compete with each other. The former effect is strongly dependent on the ordinal number of the element and, thus, by detecting with at least one detector the scattering intensities produced with the said two sources of radiation and comparing the scattering intensities with each other, the proportion of heavy elements in the ore piece can be determined and the ore piece can be classified on the basis thereof. For example, one energy dispersively operating scintillation detector can be used for detecting the scattered radiation.

摘要翻译： 公开了一种用于分选矿石块的方法和装置。 由分析仪落下的每个片段通过以不同能级操作的两个伽马辐射源单独照射，所选择的散射效应在一个级别上，康普顿效应是主要的，而在另一个级别，康普顿效应和光电 效果相互竞争。 前者的作用很大程度上取决于元素的序数，因此通过用至少一个检测器检测所述两个辐射源产生的散射强度，并将散射强度彼此比较，重元素的比例 可以确定矿石块，并且可以基于其分类矿石块。 例如，可以使用一种能量分散操作的闪烁检测器来检测散射辐射。