【摘要】 分析了现场覆盖剂和实验室自配覆盖剂岩相结构,探讨了稀土氧化物在覆盖剂中的赋存状态。结果表明:在本实验条件下的覆盖剂,原渣矿物组成主要是黄长石,另有少量镁橄榄石和含铁的硅酸盐;稀土氧化物在覆盖剂中主要以稀土硅酸盐形式存在;当稀土氧化物含量增加到一定数量时,覆盖剂开始出现固态未溶的稀土氧化物,说明其在覆盖剂中有一定的溶解度;稀土氧化物在覆盖剂中可以部分代替CaO,形成稀土硅酸盐,其形成物种类随覆盖剂碱度降低有增加的趋势。更多还原

【Abstract】 Lithofacies structure of commercial cover flux and laboratory prepared slags were analyzed , and states of rare earth oxides in cover flux were studied. The results show that under this experiment conditions, the mineral structures of original slags are mainly the calcium feldspar, a lot of magnesium olivine and Fe-bearing silicate. Occurrences of rare earth oxides in the cover flux are mainly rare earth silicates. When rare earth oxides attain to some concentration rare earth oxides cristallites appear in cover flux. It shows that the solubility of rare earth oxides is limited. Rare earth oxides may be substituted for CaO to form rare earth-silicate which may increase with the basicity reducing.更多还原