| Texto completo | |
| Autor(es): |
Falsetti, Luis Otavio Z.
;
Delfos, Rene
;
Charruault, Florian
;
Luchini, Bruno
;
van Der Plas, Dirk
;
Pandolfelli, Victor C.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | International Journal of Applied Ceramic Technology; v. 21, n. 6, p. 7-pg., 2024-07-01. |
| Resumo | |
Ceramic refractory bubbling devices may be applied in the steel ladle to induce the flotation of non-metallic inclusions to the slag phase. These inclusions have many origins along the steelmaking process and induce a detrimental effect on the mechanical properties of these metals. Therefore, the design of high-performance ceramic plugs relies on understanding the fundamentals of non-metallic inclusions captured by the gas bubbles. This study investigated the flotation dynamics of hydrophobic and hydrophilic hollow glass particles through experimentation using a water model and quantifying the particle concentration via light scattering. Both types of particles exhibited a comparable natural flotation removal rate, whereas a 40% increase for hydrophobic particles was observed when introducing 1.1 mm bubbles (at 25 NL/h) enhancing the efficiency from 43.1% to 65.2%. For hydrophilic particles, the efficiency increased from 59.1% to 86.2% when bubbles were injected into the system, whereas the removal rate decreased by 2.1-fold. The consequence of the practice of inert gas purging to remove non-metallic inclusions is also discussed. (AU) | |
| Processo FAPESP: | 22/00378-2 - Aspectos fundamentais visando aplicações tecnológicas do uso de bolhas gasosas para a remoção de inclusões não metálicas e espumação de escórias de forno elétrico a arco |
| Beneficiário: | Luís Otávio Zaparoli Falsetti |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |