| Popis: |
CaF 2 aids melting and desulfurization, but can also cause environmental pollution. Thus, it has become important to discuss the phase transformation and find a substitute for CaF 2 . A CaO-based desulfurizer with various flux additions of B 2 O 3 and CaF 2 is investigated during the refining process. The purpose of this study is to discuss the phase transformation and desulfurization ability and during refining with B 2 O 3 and CaF 2 using a high frequency furnace. Experimental results indicate that the melting temperature of CaO-Al 2 O 3 -SiO 2 series desulfurizer becomes lower when more B 2 O 3 and less CaF 2 are added. On the other hand, the desulfurization ability can be affected within 15 min when various proportions of B 2 O 3 and CaF 2 are added. The desulfurization ability is better with a high content of B 2 O 3 desulfurizer within a 15 min period. However, the desulfurization ability is not affected by the proportion of B 2 O 3 and CaF 2 for a long melting period (30 min). |
