Austin - High End X-Ray Fluorescence Technology
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X-Ray Modern sensor-based sorting technologies offer much-enhanced sorting functionality, sorting scrap into different grades by elements like Cu, Zn etc. and removing unwanted products.
How it Works
- Nearly all elements, from iron to copper to nickel to tungsten, have unique and known X-ray signatures.
- When an X- or Gamma-ray is absorbed by an element, the element fluoresces, or emits energy. Inner-shell atomic fluorescence produces the X-ray signature, and can be 'captured' and reported.
- XRF analyzers do both tasks: they provide the incident X-rays that generate the excitation in the atoms and then detect the fluorescence from most of the elements in the sample material
- In the recent past, sorting Aluminum alloys by means of XRT (X-ray-Transmission) technology has been tried.
- However, this expensive sensor technology (based on the physical property of material density) is not precise
- enough for specific alloy sorting.
- Additionally, extra material preparation stages like sizing for XRT sorting is costly and time consuming.
- Sorting with XRT has demonstrated to be cost inefficient and yielding poor product quality when used beyond the stage of rough sorting light and heavy metal alloys commonly found in shredder scrap.
- The scrap processor to scrap consumer business link is therefore in need of a better bridge by which they may conduct their trade.
- In the Austin AI model, the XRT approach is thus followed by XRF (X-Ray Fluorescence) technique.
- Using the XRF sensor technology, aluminum alloys can be classified cost efficiently, at a high quality, and at an economically viable throughput performance.
- Different than XRT, which results merely in black white imaging as sorting criteria, XRF sensing allows the definition of plain material composition according to the atomic elements table.
- XRF, and its partner technology in Austin AI first-of-its-kindscrap metal processing line, LIBS, are elemental analyzers that use the chemistry of the target material for identifying or sorting criteria.
For example, the XRF technology has proven usage for the scrap metal processors in sorting their Zorba und Zurik. XRF extracts Zn, Cu, Ni, Fe, etc., from the Zorba; and extract only PCB’s or Cu from Zurik material.
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