| 摘要 |
Method to determine the purity of treated used glass, whereby the sample quantity is taken from the treated used glass and arranged in one layer and is sent trickling down a free-falling path, the foreign bodies according to non-ferrous metals and opaque foreign materials being blown out and weighed after a separate identification, and the ratios of non-ferrous metal additions to the whole sample quantity and of the opaque foreign materials to the whole sample quantity respectively being determined. In order to be able to carry out such a method in a particularly simple manner, it is provided that the foreign materials are continuously weighed together, and depending on which kind of foreign materials-non-ferrous metals or opaque foreign materials-has been identified, the increase in weight is attributed to this identified group.
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