Decomposition of Na_2CO_3 by Interaction with SiO_2 Mold Flux of Steel continuous Casting

摘要

The effect of SiO_2 addition on the decomposition of Na_2CO_3 was investigated using the thermo-gravimet- ric and differential scanning calorimetric method (TG-DSC). Addition of SiO_2 greatly enhanced the decompo- sition of Na_2CO_3. The main decomposition reaction began to take place at a eutectic temperature of the Na_2-O-SiO_2 system (8000deg C).