The physical and chemical properties

and structure of crystallizing phases of two kinds of flux • 56 ~ 58 melilite

25 -27 grammite

4 ~5 lance spar

10 - 12 glass phase and 20 -22 melilite

78 ~80 glass phase

and ingredient

melting temperature and thickness of liquid slag layer used for 180 - 200 mm slab casting at Tangshan stainless steel mill have been tested and studied. Results showed that as casting speed >1.5 m/min

in order to make the flux maintains " whole course liquid lubrication" in mold

the melting temperature of flux should be W1 049 乜 with controlling melting speed (34 ±2) s； and the optimum thickness of liquid slag layer is 10 ~ 15 mm with slag viscosity 0. 19 Pa • s.