Although FeO in sinter ores is one of the major constituents in making iron and steel, there have been little attempts for the prediction of FeO content in sinter ores using XRD, which has …
Effects of basicity, B (CaO:SiO2 ratio) on the thermal range, concentration, and formation mechanisms of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter bonding phases have been investigated using an in situ synchrotron X-ray diffraction-based methodology with subsequent Rietveld refinement-based quantitative phase analysis. SFCA …
The formation of silico-ferrite of calcium and aluminum (SFCA) and SFCA-I iron ore sinter phases during heating and cooling of synthetic iron ore sinter mixtures in the range 298 K to 1623 K (25 °C to 1350 °C) and at oxygen partial pressure of 5 × 10 −3 atm has been characterized using in situ synchrotron X-ray diffraction. SFCA and SFCA-I are the key bonding phases in …
Powder X-ray diffraction is increasingly being used for the characterization of iron ores, sinters, and pellets.This is the result of continuing developments in instrumentation and software that enabled scientists and engineers to quickly analyze and quantify minerals and phases in often nonhomogeneous materials.The method is briefly introduced and the various …
X-ray diffraction (XRD) provides useful information about the composition of an ore sample in terms of quantification of crystalline phases and amorphous content.
Abstract. Powder X-ray diffraction (XRD) is increasingly being used for the characterization of iron ore, sinter, and pellets thanks to the continuing developments in its instrumentation and software that enabled scientists and engineers to quickly analyze and quantify minerals and phases in often nonhomogeneous materials.
Several case studies demonstrate how XRD and data clustering can be used for grade control, process optimization and quality control of iron ores, iron ore sinters, direct reduced iron (DRI), …
from calcium ferrite melt and bonds the nucleus particles of iron ore is important to clarify the quality and the formation reaction kinetics of sinter ore.1–10) The calcium-ferrites in sinter ore are multi-compo-nent continuous solid solutions containing gangue compositions such as silica and alumina. The silico-ferrite of calcium and alumi-
Calcium ferrite containing aluminum (CFA) is a precursor of the low-temperature bonding phase in the sintering process of iron ore fines for blast furnace ironmaking. Thus, improving the formation of CFA at lower temperature is very important for saving energy, improving efficiency and production. In this paper, the formation process of CFA was …
Here, the suitability of using partial least-squares regression analysis of powder X-ray diffraction data, collected for iron ore sinter samples, for the prediction of iron ore sinter strength has been further assessed. In addition, a preliminary assessment of the effect of 2 θ range on the quality of prediction has been made. For the purposes ...
Abstract Iron ore, pellets, and sinter were reduced with hydrogen at 800 °C to understand the degree of reduction and the mineralogical aspects. The weight loss of goethite and limonite iron ore was noticed to be lower than that of magnetite and hematite varieties. X-ray diffractometry (XRD) indicated 100 pct Fe in the case of hematite, 93 pct in magnetite, 53 pct in …
PDF | On Sep 1, 2017, Uwe König and others published FROM IRON ORE TO IRON SINTER – PROCESS CONTROL USING X-RAY DIFFRACTION (XRD) | Find, read and cite all the research you need on ResearchGate
Quantification techniques of mineral phases in iron ore sinter has been developed by using Rietveld analysis of X-ray diffraction patterns and applied to iron ore sinters made by the sinter pot ...
In situ X-ray diffraction analysis of iron ore sinter phases. Tanujit Born To Lead. Journal of applied …, 2004. Owing to the depletion of world lump iron ore stocks, pre-treated agglomerates of ®ne ores are making up a growing proportion of blast-furnace feedstock ($80%). These agglomerations, or`sinters', are generally composed of iron ...
The classification of iron ore sinter minerals through XRD is based on crystal structure. Advantages of the QEMSCAN technique include the ability to distinguish magnesio ferrites from calcio magnetites and the fact that calcium ferrite and silico-ferrite of calcium and aluminium (SFCA) distinction is not dependant on the sectioning of the ...
Iron ore sinter is an important feedstock material for the steel industry. Due to increased quality requirements and the need to reduce energy consumption and CO 2 emissions, the phase composition and chemistry of iron ore sinter requires faster and innovative analysis methods. The fuel consumption per ton iron ore sinter is approximately 60 kg ...
Powder X-ray diffraction (XRD) is widely used for quantitative phase analysis (QPA) of ores and processed material in the iron ore industry. Iron ore sinter is a complex composite material of ~40 ...
Iron ore sinter is one of the main iron ore burdens employed in BFs. In the sintering process, a combination of iron ores, flux, and coal particles are blended and subjected to heating within a sinter bed, typically reaching temperatures ranging from 1300 to 1420 °C. ... The study employed X-ray diffraction (XRD) analysis to determine the ...
Analysis techniques for quantifying crystal structures of mineral phases and their fractions in iron ore sinters have been developed using the Rietveld analysis of X-ray diffraction patterns and ...
Minerals in Iron Ore Sinter By Ichiro SHIGAKI, * * Mineo SA WADA* * and Kunihiro YOSHIOKA* Synopsis Quantitative analysis of crystalline minerals in iron ore sinter such as hematite, magnetite and quaternary calcium ferrite was established by means of the X-ray internal standard method. The present method permits the
Main sources of FeO in iron ore sinter is magnetite. Minor amounts are also present within the SFCA phases. According to Kwang-Su et al. [4] two different methods are used to determine the amount of FeO in iron ore sinter: a wet-chemical method based on the redox reaction between Fe2+ and standard potassium dichromate and an instrumental method
XRD analysis in combination with Rietveld quantification and statistical data evaluation using Partial Least-Square Regression (PLSR) has been successfully established to …
The sintering process is a thermal agglomeration process, and it is accompanied by chemical reactions. In this process, a mixture of iron ore fines, flux, and coal particles is heated to about 1300 °C–1480 °C in a sinter bed. The strength and reducibility properties of iron ore sinter are obtained by liquid phase sintering. The silico-ferrite of calcium and aluminum (SFCA) is the …
CubiX 3 Iron. Beneficiation techniques for iron ore are receiving worldwide attention due to the development of new deposits of lower grade ore. This application note describes the benefits of resolving the mineralogical ore composition by use of X-ray diffraction (XRD) in order to optimize concentrator feed and operational efficiency.
Analysis techniques for quantifying crystal structures of mineral phases and their fractions in iron ore sinters have been developed using the Rietveld analysis of X-ray diffraction patterns and applied to iron ore sinters of different mechanical strength, which were prepared by laboratory-scale sinter pot testing.
Silico-ferrite of calcium and aluminum (SFCA) is one of the most commonly-produced phases in fluxed iron-ore sintering, and has long been regarded as an important bonding phase in industrial sinters. It is thus considered to have a significant effect on sinter quality. In this study, a solid solution model and database has been developed for the SFCA …
XRD analysis in combination with Rietveld quantification and statistical data evaluation using partial least-squares regression (PLSR) has been successfully established to determine the mineralogical composition and the Fe 2+ content of iron ore sinter within an analysis time of less than 10 min per sample. A total of 35 iron ore sinter samples ...
sinter ore due to the influence of degradation in the quality of the iron ore resource is an issue in the iron-making process. Since the characteristics of sinter ore (strength, reducibility, reduction …
Powder X-ray diffraction (XRD) is increasingly being used for the characterization of iron ore, sinter, and pellets thanks to the continuing developments in its instrumentation and software that ...
FeO content can be determined by analyzing Fe₃O₄ by the X-ray diffraction method (XRD). Rigaku Simultix 15, a multi-channel simultaneous wavelength-dispersive XRF (WDXRF) spectrometer, can be equipped with an XRD …