THERMO-CHEMICAL MODELING OF SELF-REDUCTION BASED SHAFT FURNACES / MODELO TERMOQUÍMICO DA AUTO-REDUÇÃO EM FORNOS DE CUBA
AUTOR(ES)
JOSE HENRIQUE NOLDIN JUNIOR
DATA DE PUBLICAÇÃO
2007
RESUMO
The present work consists of a Tecnored ironmaking process oriented thermo-chemical modeling, built after a thorough assessment of the process phenomena and considering besides the peculiarities of the reactor, a number of applicable thermodynamic and operational aspects. In spite of being a thermochemical model, bench scale and pilot plant based kinetics considerations have been taken in account in order to estimate the extension of the main reactions in different parts of the furnace. The framework involved the division of the furnace in three main zones, namely Solid-state Reduction Zone (SRZ), Softening and Melting Zone (SMZ) and Dripping and Hearth Zone (DHZ). In each of the zones the existing chemical processes and overall process phenomena have been evaluated conditional to the global mass balance ruling the process. The model developed shall be used onwards to predict the behavior of the process under different conditions of raw material usage and operational modes. Moreover, the model shall be applied to compare the results of the industrial plant (under construction) with the available bench and pilot plant data, with the intention of gathering information to be used in the optimization of the model and subsequently the process. The results obtained thus far show that the applied modeling technique is a powerful tool for the global and stage-wise analysis of the process, confirming the advantageous performance of the technology as far as fuel-rate, thermal efficiency and environmental soundness are concerned.
ASSUNTO(S)
auto-reducao modelamento thermochemical termoquimico self-reducing ferro primario primary iron modeling
ACESSO AO ARTIGO
Documentos Relacionados
- Auto-redução e fusão redução de pelotas auto-redutoras de cromita.
- Utilisation of microwave energy in carbothermic reduction of iron ore by self-reduction pellets.
- Auto-redução do ferro-esponja : uma nova técnica para o aumento de sua qualidade
- Study of reduction in self-reducing pellet of chromites.
- CONTRIBUIÇÃO AO ESTUDO DA CINÉTICA DE REDUÇÃO DE BRIQUETES AUTO-REDUTORES