Scaling-down problem in binary spray pulverisation of molten metals

Citation
K. Bauckhage et al., Scaling-down problem in binary spray pulverisation of molten metals, CHEM-ING-T, 73(4), 2001, pp. 304-313
Citations number
20
Language
TEDESCO
art.tipo
Article
Categorie Soggetti
Chemical Engineering
Journal title
CHEMIE INGENIEUR TECHNIK
ISSN journal
0009-286X → ACNP
Volume
73
Issue
4
Year of publication
2001
Pages
304 - 313
Database
ISI
SICI code
0009-286X(200104)73:4<304:SPIBSP>2.0.ZU;2-Y
Abstract
The production capacities of plants for metal pulverisation are frequently rated according to the minimum throughput of melt flowing from the distribu tor crucible to pulverisation. Especially in the case of high-melting point metals and their alloys deficiencies occur in the thermal balance of the c rucible in the exit section as a result of gas expansion at the pulverisati on gas jets, which act as heat sinks, Minimum throughputs and associated li miting values of the convective heat transfer of the melt are stipulated in order to prevent "freezing" (solidification of the melt) in the crucible, The pertinent situation is illustrated for copper and steel melts and techn ical possibilities for compensating for heat deficiencies by inductive heat ing of the distributor exit are presented. In addition, the demand for mini mum throughputs can be abandoned, and there result possibilities of scaling -down and energy conservation as well as improvement of powder discharge.