Study on Melt Structure and Viscosity Properties of CaO-MgO-SiO2-Al2O3-TiO2-FeO-Cr2O3 system
JUNIPER PUBLISHERS- ACADEMIC JOURNAL OF POLYMER SCIENCE Abstract The viscosity and structure properties of CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 -FeO-Cr 2 O 3 system are investigated to illuminate the melt properties of Cr 2 O 3 -bearing BF vanadium slag. The viscosity decreases to 1.5 Pa·s at the temperature above 1565 K for the CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 system, the polymerization degree is low due to the main structures of silicate and as monomer. With the introduction of 1.5 wt% Cr 2 O 3 and 5 wt% FeO into CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 system, the viscosity significantly increases and decreases to 1.5 Pa·s until temperature beyond 1640 K due to that part of the chromium forms spinels, and the polymerization degree is drastically enhanced. With further increasing 10 wt% FeO into the CaO-MgO-SiO 2 -Al 2 O 3 -TiO 2 -1.5wt% Cr 2 O 3 system, the viscosity decreases and is 1.5 Pa·s at about 1620 K, the polymerization degree deceases and spinels disappear to improve the viscosity