溶融マットおよび銅スラグの密度, 表面張力
銅溶錬工程の相分離に関する界面現象的研究 (第1報)
1988 年 104 巻 1205 号 p. 463-468
詳細
1988 年 104 巻 1205 号 p. 463-468
Densities and surface tensions of FeS -Cu2S system and fayalite slags containing alumina have been measured by sessile drop method in order to investigate the interfacial phenomena in copper smelting such as mechanical copper loss and settling of matte particles in Cu-slags.
Densities of Cu-matte ranged from 4.2×103 kg/m3 to 5.2×103 kg/m3 at 1473 K and increased with increasing Cu mass% in the matte. Surface tensions of Cu-matte were about 0.38-0.45 N/m-1 at 1473 K and also increased with an increase of Cu mass%.
Densities of fayalite slags containing alumina lay between 2.9×103 kg/m3 and 3.5×103 kg/m3 and surface tensions of the slags were found in the range of 0.30-0.45 N/m-1 at 1473 K. Both densities and surface tensions showed a tendency to increase with increasing Fe/SiO2 mass ratio and alumina content. On the other hand, oxygen partial pressure showed litte influence on densities and surface tensions of the slags.
