【摘要】 对于 CaO－ SiO2－ Fe2O3－ MnO2－ MgO－ P2O5系熔剂，采用添加剂（ Li2O BaO Na2O K2O）分别替代熔剂中部分 CaO，测定添加剂对实验熔剂熔点的影响关系。结果表明，添加剂的加入均具有降低熔剂熔点的效果，其熔点降低效果的强弱顺序为： Li2O>BaO>Na2O>K2O。在 w(添加剂 )≤ 25％范围内，随着加入量的增大， Li2O、 BaO使熔剂熔点不断降低，而添加 Na2O、 K2O的熔剂熔点发生异常变化。根据实验结果，推荐 Li2O作为 CaO基熔剂的添加剂。当熔剂中： w（ CaO＋ Li2O） /w（ SiO2）≤ 2.5， w（ Li2O）≥ 5％， w（ Fe2O3）≥ 5％时，熔剂熔点≤ 1 384℃。更多还原

【Abstract】 Effect of additives(Li2O， BaO， Na2O， K2O) on melting point of CaO－ based fluxes have been studied .The results indicate that the ability of additives to lower melting point of the fluxes decreased in the following order: Li2O>BaO>Na2O>K2O.The melting point of the fluxes lowered with Li2O， BaO instead of CaO in the CaO－ based fluxes. It is also found that unusual changes of the melting point in the fluxes have taken place with Na2O， K2O instead of CaO in the CaO－ based fluxes. According to the experimental result, using Li2O as additives of the CaO－ based fluxes is recommended. By controlling the flux composition to w(CaO＋ Li2O)/w(SiO2)≤ 2.5,w(Li2O)≥ 5％， and w(Fe2O3)≥ 5％ , the melting point of the fluxes is less than 1 384℃ .更多还原