Thermal plasma synthesis of ultrafine iron particles

Girshick, Steven L.; Chiu, Chia Pin; Muno, R.; Wu, Chang‐Yu; Yang, Lei; Singh, Saroj Kumar; McMurry, Peter H.

doi:10.1016/0021-8502(93)90009-x

Cited by 115 publications

(74 citation statements)

References 27 publications

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“…16. A good agreement is obtained between both models and with experimental data presented by Girshick et al (1993) when solving for growth from the end of the induction tube. However this quantitative comparison must be used carefully considering the high sensitivity of the model to the estimation of the nucleation rate.…”

Section: Base Casesupporting

confidence: 71%

“…The model is applied to a reactor for the production of ultrafine iron particles, similar to the one used by Girshick et al (1993). The fields of the different variables inside the reactor are first analyzed.…”

Section: Resultsmentioning

confidence: 99%

“…The mathematical model is applied to a reactor similar to the one described by Girshick et al (1993) as shown in Fig. l.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…Various experimental studies are mentioned for the production of metal powders (Yoshida and Akashi 1981, Barmore el al. 1989, Girshick et al 1993. Many experimental studies for the preparation of ceramic powders are described in the literature, and reviews are prepared by Becker et al (19871, Laflamme et al (1992), and Soucy (1992).…”

Section: Introductionmentioning

confidence: 99%

“…This approach accounts for radial nonuniformities but does not allow vapor and particle diffusion downstream of the nucleation line. The model of Girshick et al (1993) considers the major growth mechanisms in the formation of ultrafine iron powders in a thermal plasma reactor. The contributions of thermophoresis and radial diffusion are included in the conservation equations for the moments of the distribution.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Mathematical Model for Ultrafine Iron Powder Growth in a Thermal Plasma

Bilodeau

Proulx

1996

Aerosol Science and Technology

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ABSTRACT. A two-dimensional model is developed for the growth of ultrafine metal powders in a thermal plasma reactor. The model accounts for particle formation by nucleation, and growth by condensation and Brownian coagulation. Transport of particles occurs by convection, thermophoresis, and Brownian diffw sion. The conservation equations for the moments of the particle size distribution are solved, coupled to the equation for the conservation of metal vapor. Elliptic conservation equations result from the consideration of both axial and radial diffusion of the particles. This allows for simulations in complex, recirculating flows, which are likely to occur for numerous reactor configurations and parameters. A progressive grid refining technique is used to accelerate convergence. The model is applied to the case of a typical thermal plasma reactor for the production of ultrafine iron powders. The fields of the macroscopic properties of the aerosol population and the contribution of the different mechanisms are analyzed in various conditions, some of which involve important recirculations. The effect of operating parameters on the properties of the powder generated is studied. The results are compared for some of the conditions to those obtained numerically and experimentally by Girshick et al.

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Section: Base Casesupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

“…The mathematical model is applied to a reactor similar to the one described by Girshick et al (1993) as shown in Fig. l.…”

Section: Mathematical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%