Characterization of BOF Dust for Pellets Production Used in Blast Furnace

2014 ◽  
Vol 798-799 ◽  
pp. 611-616 ◽  
Author(s):  
Elisa Pinto da Rocha ◽  
J.A. de Castro ◽  
G.M. Araujo ◽  
L. Martins
Keyword(s):  
Blast Furnace ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Basic Oxygen Furnace ◽  
Blast Furnace Process ◽  
X Ray Diffraction ◽  
Basic Oxygen ◽  
Furnace Process ◽  
Inductively Coupled

In order to minimize the incorrect disposal of dust generated in the basic oxygen furnace (BOF) converter and to generate a new application for this solid residue, a simple characterization route was proposed. The powder residue is used to produce self-reducing pellets and can be used in the blast furnace process. The chemical analysis of the dust was carried out using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), and some elements as Fe, Si, P, Al and Ca were detected in high amount, as the iron which achieved about 65% concentration. Moreover, the X-ray diffraction analysis indicated that the iron was found in the phases, mainly, as magnetite (Fe3O4) and hematite (Fe2O3) while quartz (SiO2) and calcite (CaCO3) were the major impurities. The spectrometry dispersive energy (SDE) analysis confirmed the presence of such elements and the images obtained by SEM allowed visualizing the morphology of the particles. The average of particle size distribution of the dust was 0.053 mm which is suitable for self-agglomerates pellets.

scholarly journals Preparation and characterization of apatite-like compound

2018 ◽  
Vol 96 (8) ◽  
pp. 803-809
Author(s):  
Khaled Boughzala ◽  
Ali Bechrifa ◽  
Fethi Kooli ◽  
Nabil Fattah ◽  
Khaled Bouzouita
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Apatite Formation ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Apatite Phase ◽  
Formation Reaction ◽  
X Ray ◽  
Inductively Coupled

Barium–lanthanum britholite solid solutions, Ba10-xLax(PO4)6-x(SiO4)xF2, with 0 ≤ x ≤ 6 were prepared by solid state reaction in the temperature range of 1200–1400 °C. The powders were analyzed by inductively coupled plasma atomic emission spectroscopy (ICP-AES), F-selective electrode, X-ray diffraction (XRD), and Fourier transform infrared (FTIR). In addition, the present study used thermal analysis to follow the apatite formation reaction during the heat treatment. For x ≤ 3, there is formation of a single apatite phase, whereas above this value, the La2SiO5, La2Si2O7, BaSi2O5, and Ba2La2O5 secondary phases were observed. The variation of the lattice parameters of the apatite phase as a function of x confirmed that the solid solution is discontinuous to either side of x = 3.

Synthesis and Characterization of EuL3(phen) Luminescent Complex

2011 ◽  
Vol 239-242 ◽  
pp. 2488-2491
Author(s):  
Hui Juan Ren ◽  
De Hui Sun ◽  
Zhen Feng Cui ◽  
Guang Yan Hong
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Crystalline Complex ◽  
X Ray ◽  
Inductively Coupled ◽  
Thermogravimetric Curve ◽  
Light Excitation

The europium(III)-benzoic acid(HL)-1,10-phenanthroline(phen) complex was synthesized in the ethanol-H2O system by a precipitation method. The morphology of the minicrystal complex with diameters of ca. 1.0 µm is characterized by scanning electron microscopy (SEM). Elemental analysis and inductively coupled plasma-atomic emission spectroscopy (ICP-AES) are used to determine the chemical composition of the complex. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction analysis (XRD) are used to examine the structure of the complex. The results show that the complex is a new kind of crystalline complex and the composition of the complex is speculated to be EuL3(phen). The thermogravimetric curve (TGA) analysis indicates that the complex is stable below 232 °C in air. The photoluminescence analyses (PLA) exhibit that the complex emits the characteristic red fluorescence of Eu (III) ions at 613nm under ultraviolet light excitation.

Synthesis and Characterization of PVP/Eu4/3L(phen)•2H2O Luminescent Complex

2011 ◽  
Vol 121-126 ◽  
pp. 1500-1503
Author(s):  
Hui Juan Ren ◽  
Hua Yang ◽  
De Hui Sun ◽  
Zhen Feng Cui ◽  
Guang Yan Hong
Keyword(s):  
Electron Microscopy ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Pyromellitic Acid ◽  
Inductively Coupled ◽  
Transmission Electron ◽  
Ft Ir

Rare earth europium (Eu(III))-pyromellitic acid (H4L)-1,10-phenanthroline (phen) ternary luminescent complex has been synthesized in polyvinylpyrrolidone (PVP) matrix by precipitation method. The chemical constitution of the complex has been demonstrated as PVP/EuL4/3L(phen)•2H2O by a combination of elemental analysis, inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and Fourier-transform infrared spectroscopy (FT-IR). X-ray diffraction analysis (XRD) has shown that the complex is a new kind of crystal whose structure is totally different from two ligands. The morphology of the complex has been investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results have shown that the complex has a rodlike crystal structure and the diameter of the rod is about 400 nm. Thermogravimetric analysis (TG) has indicated that the luminescent complex is thermally stable below 300 °C. Photoluminescence spectra (PL) have revealed that the complex can emit Eu3+ characteristic red fluorescence under ultraviolet excitation.

The Characteristic Evaluation of Hydroxyapatite Powders Synthesized from CaCO3 Refined from Oyster Shell and H3PO4

2006 ◽  
Vol 118 ◽  
pp. 639-644
Author(s):  
Hye Sung Kim ◽  
Su Chak Ryu
Keyword(s):  
Bone Density ◽  
Inductively Coupled Plasma ◽  
Oyster Shell ◽  
Atomic Emission ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Infra Red ◽  
Ft Ir

Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) powders is synthesized using the mixed powders of CaCO3 refined from oyster shells and phosphoric acid (H3PO4-98%, Daejung) as starting materials. The characteristic evaluation and chemical analysis of the synthesized powders is performed by X-ray diffraction (XRD), Fourier-transformed infra-red spectroscopy (FT-IR), and inductively-coupled plasma atomic emission spectroscopy (ICPAES). XRD analysis of synthetic powder by heat treatment at 1300°C for 2hrs shows only HAp peaks corresponding to stoichiometric HAp. It is confirmed by ICP-AES test that impurities such as Zn, In, Ti, Ba, Cd, Pb, and Mn, is not detected at all, but small amounts of Ti and Be is observed (0.099ppm Ti and 0.002ppm Ba). Variation of bone density is measured by giving medication of HAp powder with drinking water into human body continuously for three month. After the medication, the bone density is higher than the medication before. This means that HAp powder made from this process can be used as improver of bone density.

scholarly journals Characterization of Physically Fractionated Wollastonite-Amended Agricultural Soils

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 635
Author(s):  
Aashvi Dudhaiya ◽  
Fatima Haque ◽  
Hugo Fantucci ◽  
Rafael M. Santos
Keyword(s):  
Inductively Coupled Plasma ◽  
Agricultural Soils ◽  
Mineral Carbonation ◽  
X Ray Diffraction ◽  
Silicate Mineral ◽  
Inductively Coupled ◽  
Natural Silicate ◽  
Inorganic Content ◽  
Plasma Mass Spectrometry

Wollastonite is a natural silicate mineral that can be used as an agricultural soil amendment. Once in the soil, this mineral undergoes weathering and carbonation reactions, and, under certain soil and field crop conditions, our previous work has shown that this practice leads to accumulation of inorganic carbon (calcium carbonate). Mineral carbonation is the carbon sequestration approach with the greatest potential for sequestration capacity and permanency. Agricultural lands offer vast areas onto which such minerals can be applied, while benefiting crops. This work illustrates a technique to separate wollastonite-containing soils into different fractions. These fractions are characterized separately to determine organic and inorganic content, as well as to determine the chemical and mineral composition. The aim is to detect the fate of wollastonite in agricultural soils, and the fate of weathering/carbonation products in the soil. The soils used in the study were collected from soybean and potato farmlands in Southern Ontario, and from an experimental pilot plot. Soil fractionation was done using sieving, and soil fractions were analyzed by a calcimeter, X-ray diffraction, and loss-on-ignition. Acid digested samples were measured by Inductively Coupled Plasma Mass Spectrometry. Carbonates and wollastonite were enriched by fractionation.

Preparation and Characterization of Natural Hydroxyapatite from Animal Hard Tissues

2007 ◽  
Vol 342-343 ◽  
pp. 213-216 ◽  
Author(s):  
Xiao Ying Lü ◽  
Yong Bin Fan ◽  
Dachun Gu ◽  
Wei Cui
Keyword(s):  
Inductively Coupled Plasma ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Human Teeth ◽  
Inductively Coupled ◽  
Biological Source ◽  
Prepared Material ◽  
Different Temperatures ◽  
Natural Hydroxyapatite

The purpose of this study is to find out an effective method to prepare natural hydroxyapatite (HA) from biological source, i.e., pig bones, pig teeth, and extracted human teeth. For the preparation of natural HA a calcining method with different temperatures was used, in combination with the thermal gravimetric analysis (TGA). Three analysis methods, i.e., Fourier transform infrared spectroscope (FTIR), X-ray diffraction (XRD), and inductively coupled plasma (ICP) have been used to investigate the characteristics of the prepared materials. The spectrum of the prepared material, obtained by means of FTIR and XRD, are consistent with the standard FTIR spectrum and JCPDS index of XRD of hydroxyapitite. It confirms that the material prepared is hydroxyapitite indeed. The natural HA obtained by calcining at 850°C shows a desired quality.

scholarly journals Synthesis of Propylene Carbonate from Epoxide and CO2 Catalyzed by Carbon Nanotubes Supported Fe1.5PMo12O40

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Tahani Al-Garni ◽  
Nada Al-Jallal ◽  
Ahmed Aouissi
Keyword(s):  
Carbon Nanotubes ◽  
Propylene Carbonate ◽  
Inductively Coupled Plasma ◽  
Supported Catalyst ◽  
Catalyst Loading ◽  
X Ray Diffraction ◽  
Plasma Spectrometry ◽  
Inductively Coupled ◽  
Transmission Electron

Carbon nanotubes (CNTs) were functionalized and were then used as supports of Fe1.5PMo12O40 (FePMo) Keggin heteropolyanions catalysts. The characterization of the resulting catalysts was investigated by inductively coupled plasma spectrometry (ICP), Fourier transform infrared (FTIR) spectra, X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) light spectroscopy, and transmission electron microscopy (TEM). FTIR and XRD results confirmed that FePMo was bounded on CNTs successfully and the Keggin structure was preserved. Characterization by TEM showed that solids with high FePMo content exhibited aggregation of FePMo in large particles. The as-prepared catalysts were tested in the synthesis of propylene carbonate (PC) from CO2 and propylene oxide (PO) in a solvent-free reaction and under mild conditions. Effects of various parameters, such as reaction temperature, reaction time, FePMo content on the support, and catalyst loading on the reaction, were investigated. It has been found that CNTs supported FePMo achieved 57.7% PO conversion and 99.0% PC selectivity, whereas unsupported FePMo led only to 8.5% conversion and 48.6% selectivity. The remarkable enhancement of the catalytic activity over the supported catalyst can be attributed mainly to the better dispersion and reactivity of the FePMo catalyst in the supported material.

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