LIQUID PHASE LASER INDUCED BREAKDOWN SPECTROSCOPY
The current practice of elemental analysis in aluminum smelters involves manual sampling of liquid metal that is cast into a mold, solidified, quenched, trimmed, machined and analyzed in a laboratory, typically using optical emission spectroscopy (OES).
By replacing costly and time consuming batch sampling with real-time analysis, DTE’s unique solution presents huge cost-saving and value enhancing opportunities.
DTE’s EA-2000 determines elemental concentration directly from the molten aluminum or aluminum alloy, by firing a sequence of laser pulses on the liquid metal surface.
DTE’s proprietary and patent pending improvements to industry standard laser-induced break- down spectroscopy (LIBS) solves the challenge of continuously performing immediate and accurate elemental analysis directly from the high temperature liquid metal surface.
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As the EA-2000 is measuring directly in the melt, it can monitor real-time concentration changes that would be difficult or impossible to capture using conventional sampling methods.
Limit of detection (LOD) is well within working range for elemental analysis and error with respect to reference is unprecedented for in-line analysis.
How does LIBS work?
LIBS uses a highly energetic laser pulse to excite the liquid metal surface to form a plasma plume with temperatures in excess of 100,000 K.
A sensor detects the atomic emission spectra— characteristic frequencies — of each element in the material being analyzed, which are then converted into a quantitative reading.
This contactless process reduces the expense of replacement probes used by other methods.
Improved process control
The EA-2000 offers a breakthrough, automated process. It determines elemental concentration with a single measurement, directly from the molten aluminum or alloy, providing faster results and the possibility of real-time, high-frequency monitoring of impurity concentrations.
By determining composition directly from homogeneous liquid, with frequent readings possible, the EA-2000 provides class-leading performance that greatly exceeds manual sampling.
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