标准摘要
[中文适用范围]： 该方法基于测试部分的分解：1) 用过氧化钠烧结，用盐酸和高氯酸处理，用稀硝酸处理，或 2) 用盐酸、硝酸和高氯酸处理，蒸发，用任何物质过滤二氧化硅。 残余物，与碳酸钠熔融并溶解在盐酸和高氯酸中，在两种情况下蒸发溶液，过滤沉淀二氧化硅，点燃，并称重，用氢氟酸和硫酸处理点燃的残余物，点燃，并重新称重。 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 1% 至 15% 之间的情况。 [外文原描述]： The method is based on decomposition of the test portion by 1) sintering with sodium peroxide and treatment with hydrochloric and perchloric acids and treatment with dilute nitric acid, or 2) treatment with hydrochloric, nitric and perchloric acids, evaporation, filtration of silica with any residue, fusion with sodium carbonate and dissolution in hydrochloric and perchloric acids, in both cases evaporation of the solution, filtration of the precipitated silica, ignition, and weighing, treatment of the ignited residue with hydrofluoric and sulfuric acid, ignition, and reweighing. Applies to silicon contents between 1 % and 15 % in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
英文名称Iron ores — Determination of silicon content — Part 1: Gravimetric methods