Caracterización físicoquímica de acreciones presentes en un horno de lecho fluidizado para la tostación de blenda
- Liliana Marcela Tamayo Escobar 1
- Christian Alejandro Goñi 1
- Íñigo Eloy Ruiz Bustinza 2
- María Florentina Barbés Fernández 2
- Begoña Fernández 2
- Erika Marinas 2
- Miguel Ángel Barbes Fernández 2
- Julia Ayala
- 1 Universidad de Concepción. Chile
- 2 Universidad de Oviedo - Unidad Asociada al CENIM-CSIC (España)
ISSN: 0012-7353
Datum der Publikation: 2012
Ausgabe: 79
Nummer: 175
Seiten: 90-96
Art: Artikel
Andere Publikationen in: DYNA: revista de la Facultad de Minas. Universidad Nacional de Colombia. Sede Medellín
Zusammenfassung
This study has of central aim to establish the physicochemical characteristics of the accretions present in an industrial furnace of sphalerite roasting (ZnS) operating at 945 ° C which, according to observations on plant, they are formed preferentially on surfaces at low temperature such as boiler output, cooling pipes and hoppers. The analysis by X-Ray Diffraction, Atomic Absorption, and Image Analysis showed that the main components of these deposits are zinc sulfate, lead sulfate and zinc ferrite. A thermodynamic analysis based on the construction of stability diagrams for the system Zn-Fe-Pb/SO2(g)-O2 (g) with XZn ≥ 0,5 (this is, XFe = 0,125 XPb = 0,015) between 300 to 900 º C, confirms the strong presence of ZnSO4, Fe2(SO4)3 , PbSO4 and ZnFe2O4 under reactor operating conditions of roasting, validating this analysis with experimental observations