Decomposition kinetics of alkaline-earth hydroxides and surface area of their calcines

Hartman, Miloslav; Trnka, O.; Svoboda, Karel; Kocurek, J.

doi:10.1016/0009-2509(94)85091-7

Cited by 31 publications

(20 citation statements)

References 16 publications

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“…The kinetics of the reverse reaction, again a thermal dissociation, is described in the work of Hartmann et al 16) Based on experimental work done by Irabien et al 17) they were able to correlate the experimental data by nonlinear regression with reasonable accuracy with the following expression:…”

Section: Thermal Decomposition Of Ore Componentsmentioning

confidence: 99%

Modeling and Simulation of Heat Front Propagation in the Iron Ore Sintering Process

Mitterlehner¹,

Loeffler²,

Winter³

et al. 2004

ISIJ International

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The aim of this work was to develop a model for the iron ore sintering process with special focus on heat front propagation through the packed bed and to provide a powerful tool ("SinterSim v1.1") for the simulation of the sintering process. Special interests were paid to the sub-models of fluid flow through the packed bed, oxidation of carbon monoxide, coke combustion, melting and solidifying of the bed material and the thermal decomposition the of ore components. Base case calculations were done showing very good agreement compared to values gained in test runs of the sintering process in a sinter pot. Numerous calculations with varied parameters were carried out to evaluate the behavior of the sintering process in means of a sensitivity coefficient for the specific variation. For duration of the sintering process and height of the sintering zone the most sensitive parameters turned out to be the mean diameter of the sinter mix material, void fraction inside the packed bed, the amount of coke breeze in the bed, the humidity of the green sinter mix and the amount of Fe 2 O 3 in the ore.

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Section: Thermal Decomposition Of Ore Componentsmentioning

confidence: 99%

Modeling and Simulation of Heat Front Propagation in the Iron Ore Sintering Process

Mitterlehner¹,

Loeffler²,

Winter³

et al. 2004

ISIJ International

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“…Thermal decomposition of various compounds are of major importance because of their frequent applications in calcinations metallurgy and in the production of large-surface materials for sorbents and catalysis (Hartman et al, 1994). Many studies have been carried out on the effect of c-irradiation on the thermal decomposition of inorganic solids (Monshi et al, 1998;Mahfouz et al, 2000, p. 59).…”

Section: Introductionmentioning

confidence: 98%

Kinetic analysis of nonisothermal decomposition of (Mg5(CO3)4(OH)2·4H2O/5Cr2O3) crystalline mixture

Alothman

Al-Farhan

Mahfouz

2009

Journal of King Saud University - Science

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Pure MgCr 2 O 4 spinel was synthesized from crystalline mixture of (Mg 5 (CO 3 ) 4 (O-H) 2 AE4H 2 O/5Cr 2 O 3 ) by heating at 900°C for 27 h. TG, DTA, FT-IR and XRPD techniques were used to follow the reactions and identify the products. Nonisothermal kinetics of thermal decomposition of un-irradiated and c-irradiated physical crystalline mixtures were studied in static air. The kinetic parameters were obtained through model-fitting and model-free methods, and artificial isokinetic relationship (IKR) for multi-step processes. The results show that the decomposition for both un-irradiated and c-irradiated mixtures proceed through two steps with different reaction mechanisms. The first is a third-order reaction (F 3 ) mechanism followed by one-dimensional diffusion (D 1 ) as a second step.

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“…The so-called mixed catalysts are often produced by thermal decomposition of mixed components of transition metals [4,5]. The decomposition reactions of various compounds are of major importance because of their frequent application in metallurgy and in the production of large-surface materials to be used as sorbets and catalysts [6]. Complicated thermal curves are commonly produced from thermal analysis of two solids.…”

Section: Introductionmentioning

confidence: 99%

Thermal solid–solid interactions and physicochemical properties of Co3O4/MoO3 system treated with Al2O3

Shaheen¹,

Maksod²

2009

Journal of Alloys and Compounds

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Decomposition kinetics of alkaline-earth hydroxides and surface area of their calcines

Cited by 31 publications

References 16 publications

Modeling and Simulation of Heat Front Propagation in the Iron Ore Sintering Process

Modeling and Simulation of Heat Front Propagation in the Iron Ore Sintering Process

Kinetic analysis of nonisothermal decomposition of (Mg5(CO3)4(OH)2·4H2O/5Cr2O3) crystalline mixture

Thermal solid–solid interactions and physicochemical properties of Co3O4/MoO3 system treated with Al2O3

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