SORTING OUT WASTE GLASS CULLET WITH A HIGHER IRON OXIDE CONTENT
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Aug 13, 2024
filing date -
Aug 13, 2024
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Abstract
Method and sorting system for sorting out waste glass cullet with a higher content of iron oxide from a single-layer material stream of waste glass cullet. The material stream contains waste glass cullet with a higher and a lower content of iron oxide. The material stream is irradiated with visible light and the visible transmission light passing through the waste glass cullet is detected, the material stream is irradiated with infrared light in a frequency range of at least 1100-1200 nm and the infrared transmission light passing through the waste glass cullet is detected, a waste glass cullet is classified as having a higher content of iron oxide if the ratio of the intensity of the infrared transmission light to the intensity of the visible transmission light exceeds or falls below a predetermined threshold value, and the cullet classified in this way is separated from other waste glass cullet.
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