Spectroscopic Composition Sensing for Unknown Liquid Metallurgical Melts
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Solution Overview
Problem
Existing systems are unable to determine the chemical composition of unknown liquid metallurgical products emitting electromagnetic radiation, particularly at high temperatures, as they require excitation by a light source and cannot handle liquid form.
Innovation Solution
A system and method using a collection probe to acquire electromagnetic radiation, spectroscopic means to generate a spectral signal, and processing means to estimate temperature and emissivity, comparing these values with a database to determine the chemical composition of the metallurgical product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a light source is used to excite the slag portion and reflected light is collected, then the chemical composition can be determined, but the system cannot be applied to unknown liquid metallurgical products and requires external excitation
Solution Approach 1:
Instead of exciting the sample with external light and measuring reflected light, the invention inverts the approach by measuring the electromagnetic radiation naturally emitted by the hot metallurgical product itself. This allows the system to work with unknown liquid metallurgical products without requiring external excitation sources.
Solution Approach 2:
The hot metallurgical product serves its own measurement function by emitting electromagnetic radiation that carries information about its chemical composition. The system utilizes this self-emitted radiation rather than requiring external excitation, enabling direct analysis of liquid metallurgical products.
2Measurement precision
If reflected light is collected from the slag portion, then chemical composition can be estimated, but the method cannot handle liquid metallurgical products at high temperatures
Solution Approach 1:
The invention changes the measurement parameter from reflected visible light to emitted electromagnetic radiation in the infrared range. This parameter change enables measurement of liquid metallurgical products at high temperatures (above melting point) where reflected light methods fail, by utilizing the thermal emission naturally present at these temperatures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate determination of the chemical composition of liquid metallurgical products by analyzing their emitted electromagnetic radiation, overcoming the limitations of existing systems.
Implementation Method 1
a collection probe configured to acquire the electromagnetic radiations emitted by the metallurgical product in a predetermined wavelength range Δλ
Implementation Method 2
spectroscopic means connected to the collection probe and configured to generate a spectral signal of the acquired electromagnetic radiations
Data Source
AI summary
A device for determining the chemical composition of a liquid metallurgical product emitting electromagnetic radiations. The device including a collection probe configured to acquire the electromagnetic radiations emitted by the metallurgical product in a predetermined wavelength range Δλ, a spectroscopic device connected to the collection probe and configured to generate a spectral signal of the acquired electromagnetic radiations and processing means including a database of reference radiances. A method using the device is also provided.