一、绪言关于砂铁矿中的铁、钛、钒的分离问题,有各种工业化的方法和很多的试验研究方法。其中有: (1)用无烟煤等炭质还原剂将砂铁矿的铁还原成海棉铁的方法; (2)用食盐、苏打等钠盐一起进行焙烧,使砂铁矿中的钒生成钒酸钠之后再浸出分离方法; (3)用钠化焙烧方法,使砂铁矿中的钛变成钛酸钠的方法。三个方法综合起来,在一个还原焙烧的工艺过程中将铁变为海棉铁、钒生成可溶性的钒化合物、钛变成钛酸钠,并对三种成分的分离 I. INTRODUCTION There are various methods of industrialization and many experimental methods for the separation of iron, titanium and vanadium in sandstone. Among them are: (1) a method for reducing iron of sanding iron into sponge iron by using a carbonaceous reducing agent such as anthracite; (2) roasting with sodium salt such as salt, soda and the like to make vanadium in the sanding iron to form vanadium Sodium leaching and then leaching separation method; (3) with sodium roasting method, the sand into the sodium titanate titanium method. Together, the three methods turn iron into sponge iron during a reduction roasting process, vanadium produces a soluble vanadium compound, titanium becomes sodium titanate, and the three components are separated