俄罗斯彼得堡市铝镁研究所采用烧结─浸出工艺研究了霞石成分、粘结剂、强碱以及碳酸盐等对Al2O3还原能力的影响。结果表明．Al2O3的还原率随原料中Fe2O3含量的增加而提高，反之，它也随Fe2O2含量的减少而降低。原料中Na2O与K2O的还原能力随SiO2含量的提高而降低．而SiO2含量的 The Institute of Aluminum and Magnesium in Petersburg, Russia, studied the effect of nepheline composition, binders, strong bases and carbonates on the reduction ability of Al2O3 by sintering-leaching process. The results show. The reduction rate of Al2O3 increases with the increase of Fe2O3 content in raw materials, on the contrary, it also decreases with the decrease of Fe2O2 content. The reducibility of Na2O and K2O in raw materials decreases with the increase of SiO2 content. And the content of SiO2