Kinetics of reaction of roasting of soda ash and ilmenite ore concentrate for formation of sodium titanates

Nafeaa, I.A.; Zekry, A.F.; Khalifa, M.G.; Farag, A.B.; El-Hussiny, N.A.; Shalabí, M. E. H.

doi:10.2298/sos1503319n

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…However, the only crystal form of real significance is calcite [3]. By being the most abundant and enclosing at least 50 % of all present mineral phases in the limestone, calcite is an important resource and subject of investigations in various scientific fields: mineralogy, chemistry, physics, materials science [4][5][6][7]. The crystalline structure of calcite is commonly illustrated by the c R3 trigonal space group [8].…”

Section: Introductionmentioning

confidence: 99%

The chemometric study of limestone physico-chemical properties and thermal behavior for application in construction composites

et al. 2017

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The limestone, as an economically sustainable and easily available basic raw material, is frequently utilized in the building industry for resolving of the environmental protection issues. The limestone is incorporated in a cementitious system either by grinding with cement clinker, or by blending with the binder during concrete production. The employing of powdery limestone as partial cement replacement gives the construction composites with properties comparable to that of conventional concrete. The study of limestone thermal behavior and its chemistry is crucial for the prognosis of the designed composites properties. In this work, the instrumental techniques (atomic emission spectroscopy, differential thermal and thermo-gravimetric analysis, Fourier transform infrared spectroscopy) and the Principal component analysis were employed to discriminate and classify 22 limestone types. The PCA statistical method, as a means of spectra and experimental data fingerprinting, grouped the samples in a multi-dimensional factor space producing four graphical prognosis - one for each instrumental method. DTA/TG peak values varied the most in a short range between 830-870?C, while FTIR spectra showed the highest diversity in the 867-887 cm-1 and 1237-1647 cm-1 ranges. This research was governed by an idea to reveal whether it is possible to differentiate various limestone types and to predict the possibility of their employment in construction composites on the basis of the results of instrumental and mathematical analyses. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. ON 172057, III 45008, TR 31055, TR 34006, and TR 34013]

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Section: Introductionmentioning

confidence: 99%

The chemometric study of limestone physico-chemical properties and thermal behavior for application in construction composites

et al. 2017

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“…Reduction of the prepared briquettes under hydrogen gas was done using TGA apparatus [13][14][15][16][17][18][19]. The sample was placed in a Ni-Cr basket, which was suspended below the electronic balance by Ni-Cr wire.…”

Section: Briquette Reduction Proceduresmentioning

confidence: 99%

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

El-Dars,

Salah,

Elsaby

et al. 2017

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)

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The effect of the addition of El-Dekhilla waste pellets fines (E) upon the quality of El-El-Baharia iron ore (O) briquettes was investigated in this study. The kinetics of the reduction of the briquettes formed having different composition using hydrogen gas was studied at different temperatures (700°C-950°C). The results indicated that best ore reduction was achieved at 950°C. The kinetic of the reduction process was studied using different models and the best-fit models determined was (Kt = 1-(1-R) 1/2 and kt = R+ (1-R) ln (1-R)). XRD analysis was used to identify the main crystalline phases present within the reduced briquettes at the optimal temperature and it was found that the metallic iron (syn. Fe) was predominantly formed.

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“…In the following text we will present cross section set for Na + + DXE scattering which includes association cross section for Na + (DXE) complex. Alkaline metals are of great interest for possible applications [20].…”

Section: Introductionmentioning

confidence: 99%

Cross sections and transport properties for Na+ in (DXE) gas

et al. 2016

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In this work we select most probable reactions of alkali metal ion Na + with dimethoxyethane (DXE) molecule. Appropriate gas phase enthalpies of formation for the products were used to calculate scattering cross section as a function of kinetic energy with Denpoh-Nanbu theory. Calculated cross sections were compared with existing experimental results obtained by guided ion beam tandem mass spectrometry. Three body association reactions of ions with DXE is studied and compared to experimental results. Calculated cross sections were used to obtain transport parameters for alkali metal ion in DXE gas.

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Kinetics of reaction of roasting of soda ash and ilmenite ore concentrate for formation of sodium titanates

Abstract: Alkaline metals and hydrogen titanates are of great interest for possible applications. The soda ash and Rosetta ilmenite ore concentrate briquette were investigated. The kinetic of formation of sodium titanate was studied in the temperature range 700?C to 900?C.

Cited by 4 publications

References 7 publications

The chemometric study of limestone physico-chemical properties and thermal behavior for application in construction composites

The chemometric study of limestone physico-chemical properties and thermal behavior for application in construction composites

The Effect of Adding El-Dekhilla Waste Pellets Upon The Quality and Reduction Kinetics of El-Baharia Iron Ore Briquettes Using Hydrogen Gas

Cross sections and transport properties for Na+ in (DXE) gas

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