论文部分内容阅读
铌铁金红石的化学式为(Ti,Nb,Fe)O_2,是富含铌钽(常含铁)的金红石变种。 一、矿物的分解和铁钛与铌钽的分离 称取300～500Jg矿物粉末样品于予先盛有0.1g粉状焦硫酸钾的小铂坩埚中,少许焦硫酸钾复盖样品上,加数滴硫酸,盖埚盖。熔融半小时,取下加10滴氢氟酸,加热溶解盐类。溶液涂于层析泸纸上。展开剂为甲基异丁酮:丁酮:氢氟酸:硝酸=60:30:15:5。室温15℃左右时,上行法展开110分钟。2％丹宁溶液喷雾显色。铁钛的R_f值为零,铌钽Rf值为1。
Niobium Rutile has the chemical formula (Ti, Nb, Fe) O 2 and is a rutile enriched with niobium tantalum (often iron). First, the decomposition of minerals and the separation of iron and titanium and niobium and tantalum Weigh 300 ~ 500Jg mineral powder samples Pre-containing 0.1g powdered potassium pyrophosphate in a small platinum crucible, a little potassium pyrosulfate to cover the sample, add the number Drop of sulfuric acid, lid lid. Melted for half an hour, remove and add 10 drops of hydrofluoric acid, heated to dissolve salts. Apply the solution to the chromatography paper. Developing agent is methyl isobutyl ketone: butanone: hydrofluoric acid: nitric acid = 60: 30: 15: 5. At room temperature about 15 ℃, the uplink method to start 110 minutes. 2% tannin solution spray color. Ferro-titanium R_f value is zero, niobium and tantalum Rf value of 1.