Spectral Composition Analysis of Liquid Metallurgical Products
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Solution Overview
Problem
Existing methods for determining the chemical composition of liquid metallurgical products at high temperatures are limited to known products and require excitation by a light source, making them unsuitable for unknown products and unable to utilize electromagnetic radiation emitted by the products.
Innovation Solution
A system and method that utilizes electromagnetic radiation emitted by liquid metallurgical products, employing a spectral system with multiple spectrometers and processing means to estimate temperature and emissivity, and a probabilistic model to determine chemical composition, including a multilayer perceptron for regression analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electromagnetic radiation emitted by the liquid metallurgical product is utilized, then measurement capability for unknown products is enabled, but measurement precision is challenged by atmospheric interference
Solution Approach 1:
The patent introduces an atmospheric correction module that acts as an intermediary between the raw spectral signal and the chemical composition analysis. This module estimates atmospheric absorption and scattering effects based on environmental parameters (temperature, humidity, pressure) and subtracts these effects from the measured spectrum, thereby eliminating the harmful intermediary (atmosphere) that was distorting the measurements.
Solution Approach 2:
The system dynamically adjusts measurement parameters including wavelength selection, integration time, and correction factors based on real-time atmospheric conditions (temperature, humidity, pressure). By changing these parameters adaptively, the system maintains measurement precision across varying environmental conditions while preserving the ability to analyze unknown metallurgical products.
2Measurement precision
If multiple spectrometers are used to cover a broad wavelength range, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple spectrometers with different wavelength ranges (UV-Vis, NIR, MIR) into a unified measurement system with centralized control and data processing. The spectrometers work in parallel but are integrated through a common platform that performs coordinated calibration, simultaneous atmospheric correction, and unified spectral analysis, thereby managing complexity through systematic integration rather than isolated operations.
Solution Approach 2:
The system employs a universal calibration and processing platform that serves all spectrometers simultaneously. A single calibration framework handles multiple wavelength ranges, and one atmospheric correction module processes data from all sensors, making the complex multi-spectrometer system manageable through multi-functional integration rather than separate dedicated systems for each wavelength range.
3Productivity
If real-time chemical composition determination is achieved, then productivity is improved, but device complexity increases due to advanced processing requirements
Solution Approach 1:
The system performs preliminary calibration and atmospheric characterization before actual measurements. Reference spectra of known metallurgical compositions are pre-acquired and stored, and atmospheric parameters are continuously monitored and pre-corrected. This preliminary preparation enables real-time analysis during actual measurements by comparing against pre-established references rather than performing full analysis from scratch.
Solution Approach 2:
The patent replaces complex mechanical or chemical analysis methods with optical spectroscopy and computational analysis. Instead of physical sampling and laboratory analysis, the system uses non-contact electromagnetic radiation measurement combined with algorithmic processing (including neural networks and multivariate analysis) to achieve real-time composition determination, substituting mechanical/chemical complexity with optical and computational simplicity.
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 electromagnetic radiation, overcoming limitations of existing methods and providing precise characterization of unknown products.
Implementation Method 1
liquid metallurgical product emitting electromagnetic radiations
Implementation Method 2
spectroscopic means configured to separate and measure spectral components of the focused beam and to generate a spectral signal
Implementation Method 3
converting the spectral signal into an ideal black body radiance L BB (λ, T)
Implementation Method 4
a regression algorithm is thus implemented to estimate chemical composition of the slag portion based on intensity of reflected light and its wavelength
Data Source
Figure 1~2
Figure 3
AI summary
A device for determining the chemical composition of a liquid metallurgical product emitting electromagnetic radiations. The device comprising a collection probe configured to acquire the electromagnetic radiations emitted by the metallurgical product in a predetermined wavelength range Δλ, spectroscopic means 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. The invention is also related to a method using said device.