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AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsAlexander LEITNER, Sandra KÖNIGSHOFER, Volker MÖRKENS, Joachim MAKOWE
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A method is provided to determine the chemical composition (CC) of used refractory material specimen (M) to allow sorting and recycling of refractory material specimens (M) to achieve a low or zero-waste concept. The method is characterized by a breakdown step during which a pulsed laser beam (L) is irradiated by a laser source (2) onto an examination section (E) of the used refractory material specimen (M) to form a plasma in said examination section (E), by a recording step during which a detection unit (3) records spectral emission(S) of said examination section (E) and by an evaluation step during which an evaluation unit (4) determines the chemical composition in the examination section (E) using spectral lines of the recorded spectral emission (S), wherein a spectral line at a wavelength of about 193 nm is used to determine the carbon content in the examination section (E), and the chemical composition (CC) of the used refractory material specimen (M) is determined by using said chemical composition in the examination section (E).
Method for determining the chemical composition (CC) of a used refractory material specimen (M), wherein during a breakdown step a pulsed laser beam (L) is irradiated by a laser source (2) onto an examination section (E) of the used refractory material specimen (M) to form a plasma in said examination section (E), wherein during a recording step by a detection unit (3) spectral emission(S) of said examination section (E) is recorded, wherein during an evaluation step by an evaluation unit (4) the chemical composition in the examination section (E) is determined using spectral lines of the recorded spectral emission(S), characterized in that during the evaluation step a spectral line at a wavelength of about 193 nm is used to determine the carbon content in the examination section (E), and the chemical composition (CC) of the used refractory material specimen (M) is determined by using said chemical composition in the examination section (E), and that the carbon content in the examination section (E) is determined by using an auxiliary spectral line at an auxiliary wavelength of the recorded spectral emission, wherein an auxiliary spectral line of oxygen is used.
Examination device (1) for determining the chemical composition (CC) of a used refractory material specimen (M), characterized in that the examination device (1) comprises a laser source (2), configured to irradiate a pulsed laser beam (L) onto an examination section (E) of the refractory material specimen (M) to form a plasma in said examination section (E) during a breakdown step, that the examination device (1) comprises a detection unit (3), configured to record spectral emission(S) from the examination section (E) during a recording step, and that the examination device (1) comprises an evaluation unit (4), configured to determine during an evaluation step the chemical composition in the examination section (E) using the recorded spectral emission(S) while during the evaluation step using a spectral line at a wavelength of about 193 nm to determine the carbon content in the examination section (E), wherein the chemical composition (CC) of the used refractory material specimen (M) is determined by using said chemical composition in the examination section (E) while the carbon content in the examination section (E) is determined by using an auxiliary spectral line at an auxiliary wavelength of the recorded spectral emission., wherein an auxiliary spectral line of oxygen is used.
Dependencies are inferred from the claim text.