Identification of the Elemental Composition of Granulated Blast Furnace Slag by FTIR-Spectroscopy and Chemometrics

Abstract

Blast furnace slag is a key large-tonnage waste product of metallurgical production, which is considered to be a promising alternative material in construction. In order to determine the scope of potential use of slag as a marketable product, it is necessary to study its structure and composition, which is determined by means of modern analytical instrumental methods. This paper analyzes the application of Fourier transform infrared spectroscopy (FTIR) and chemometrics methods to develop calibration models for identifying pelletized slag by elemental composition. In a comparative analysis of FTIR-spectra of slag the characteristic frequencies of absorption bands responsible for the content of calcite, silicates and aluminosilicates in the composition of samples were determined. Multivariate regression methods (principal components regression, partial least squares regression) and data of elemental composition results by EDX method were used to develop calibration models for determining elemental composition of granulated blast furnace slag. Using the developed PLS models with high performance (R2 from 0.91 to 0.96 for different components), the prediction of the elemental composition (Ca, Si, O, Mg) of the test sample was carried out and a low deviation of the prediction in contrast to the EDX reference data was obtained. The use of PLS calibration models for rapid and nondestructive determination of the quantitative content of components of the composition of granulated blast furnace slag has been proposed.

Expanding the Emission of CsPbBr3 Nanocrystals in the Blue Region

“…The C–O–C stretching vibration has an energy of 1075 cm –1 . The metal–oxygen (Eu–O) bond is characterized by peaks at 996 and 992 cm –1 . Eu–O–H bond is attributed to the energy 909 cm –1 .…”

“…30 The metal−oxygen (Eu−O) bond is characterized by peaks at 996 and 992 cm −1 . 35 Eu−O−H bond is attributed to the energy 909 cm −1 . The characteristic peak at 721 cm −1 is due to the Eu−Br bond.…”

Adsorptive Sequestration of Cr(VI) using Chitosan-GBFS Composite

“…Fig. 1 (b) depicts FT-IR spectra of GBFS which shows weak absorption peak at 3667 cm -1 and sharp absorption peak 997 cm -1 due to Si-Al-O stretching [16]. Fig.…”

“…39th JOHANNESBURG International Conference on "Chemical, Biological and Environmental Engineering" (JCBEE-23) Nov [16][17]. 2023 Johannesburg (South Africa) https://doi.org/10.17758/IICBE5.C1123060…”

Structural Characteristics and Cementitious Behavior of Magnesium Slag in Comparison with Granulated Blast Furnace Slag

“…Magnesium slag, like other solid wastes, can also be used for mine filling [5,35,36] or road base material [37][38][39][40][41][42]. Numerous studies have conducted extensive research into other industrial solid wastes, such as granulated blast furnace slag [43][44][45], steel slag [46], red mud [47] and so on [48][49][50], which provide guidance for the utilization of the corresponding tailings and slag. However, there are fewer corresponding studies on the structure and cementitious properties of magnesium slag, which is one of the reasons for its current low utilization.…”