标准摘要
[中文适用范围]： 该方法基于通过与四硼酸钠熔融分解测试部分并用稀硝酸处理，添加钼酸铵将硅酸盐转化为钼硅酸盐络合物，用抗坏血酸还原成钼蓝，并用分光光度法测量样品的吸光度波长约为 600 nm 的钼蓝络合物。 适用于天然铁矿石、铁精矿和团矿（包括烧结产品）中硅含量在 0.1% 至 5.0% 之间的情况，尤其适用于含氟矿石。 [外文原描述]： The method is based on decomposition of the test portion by fusion with sodium tetraborate and treatment with dilute nitric acid, addition of ammonium molybdate to convert silicate into a molybdatosilicate complex, reduction to molybdenum blue with ascorbic acid, and spectrophotometric measurement of the absorbance of the molybdenum blue complex at a wavelength of approximately 600 nm. Applies to silicon contents between 0,1 % and 5,0 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products, especially for ores containing fluorine.
英文名称Iron ores — Determination of silicon content — Part 2: Reduced molybdosilicate spectrophotometric method