𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A kinetic model for pyrite transformations in a combustion environment

✍ Scribed by Srivats Srinivasachar; Arthur A. Boni

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
989 KB
Volume
68
Category
Article
ISSN
0016-2361

No coin nor oath required. For personal study only.

✦ Synopsis

A kinetic model for describing the transformations of excluded pyrite (FeS,) particles in a combustion environment is developed by solving the particle heat and mass balances. The model follows the particle composition history, starting from pyrite decomposition to pyrrhotite (Fe, _,S), and its subsequent oxidation to a molten sulphide-oxide mixture, then magnetite (Fe,O,), and finally haematite (Fe,O,). Particle temperature is found to exceed the gas temperature during this process, due to the exothermic oxidation of iron sulphide. A special feature of the model is that it predicts the duration of the melt phase in the particle. The time spent in the molten state is found to constitute ~80% of the total time required

πŸ“œ SIMILAR VOLUMES

Kinetic model of liquid B2O3 gasificatio
Kinetic model of liquid B2O3 gasification in a hydrocarbon combustion environment: I. Heterogeneous surface reactions
✍ R. C. Brown; C. E. Kolb; H. Rabitz; S. Y. Cho; R. A. Yetter; F. L. Dryer πŸ“‚ Article πŸ“… 1991 πŸ› John Wiley and Sons 🌐 English βš– 762 KB

## Abstract As part of an ongoing program to model hydrocarbon assisted boron combustion, a kinetic model has been developed to describe gasification of the ubiquitous boron oxide coating that inhibits particulate boron ignition. This model includes homogeneous gas phase oxidation reactions, multi‐

Kinetic model for hydrocarbon-assisted p
Kinetic model for hydrocarbon-assisted particulate boron combustion
✍ R. C. Brown; C. E. Kolb; S. Y. Cho; R. A. Yetter; F. L. Dryer; H. Rabitz πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 823 KB

A kinetic model is presented to describe the high temperature (1800 K < T < 3000 K) surface oxidation of particulate boron in a hydrocarbon combustion environment. The model includes a homogeneous gas-phase B/O/H/C oxidation mechanism consisting of 19 chemical species and 58 forward and reverse elem