二安替比林甲烷分光光度法测定钛矿石物相的钛含量

Determination of titanium content in titanium ore phase by diantipyrylmethane spectrophotometric method

用(2+1)盐酸-氟化钠浸取,残渣测定金红石中二氧化钛。另取一份试样进行湿法磁选,磁性部分测定钛磁铁矿中钛。其残渣与非磁性部分合并,灰化后在800℃灼烧,钛铁矿分解为二氧化钛和三氧化二铁,再用盐酸和氟化钠浸取,此时榍石和硅酸盐中的钛进入溶液,二钛铁矿和金红石中钛仍然留在残渣中,然后分别测定残渣和溶液中的钛。残渣中钛为钛铁矿和金红石中钛的含量,减去金红石中钛后即为钛铁矿中钛,从而完成了金红石、钛铁矿、榍石和硅酸盐以及钛磁铁矿等不同物相中钛的测定。

A sample is leached with(2+1)hydrochloric acid-sodium fluoride,and the residue is used to determine titanium dioxide in rutile.Another sample is taken for wet magnetic separation and the magnetic part is used to determine titanium in titanium magnetite.The residue is merged with the non-magnetic part,and after being ashed and burned at 800℃,the ilmenite is decomposed into titanium dioxide and ferric oxide,which is then leached with hydrochloric acid and sodium fluoride.The titanium in sphene and silicate dissolves into the solution,the titanium in the ilmenite and rutile remains in the residue.Then titanium in the residue and solution is determined.The titanium in the residue is titanium in ilmenite and rutile.Titanium in the residue minus titanium in the rutile is titanium in the ilmenite.Thus the determination of titanium in different phases such as rutile,ilmenite,sphene stone,silicate and titanomagnetite is completed.