当测定含大量稀土的包头矿,铁精矿中钙镁时,往往要将大量稀土除去.在pH6.0左右用氨水分离不能达到良好分离的目的,还需再提高pH值单独分离稀土.这样不仅手续冗长,且当稀土含量高时仍有较多吸附.钛铁试剂(Tiron)在碱性溶液中能与稀土离子形成水溶性络合物,它与镧、镱等离子 When the determination of a large number of rare earth Baotou mine, iron ore concentrate of calcium and magnesium often have to remove a large number of rare earth in about pH6.0 with ammonia separation can not achieve the purpose of good separation, but also need to increase the pH value separately isolated rare earth Not only the lengthy procedure but also the more adsorption when the RE content is high.The Tiron can form a water-soluble complex with rare earth ions in alkaline solution, which interacts with lanthanum,