铁矿石和煤矸石中硫化物硫的测定

• 作 者: 隋琴香 胡庸仆
• 机 构: 建材研究院水泥所,建材研究院水泥所,
• 出 处: 水泥
• 发表日期: 1983年06期
• 关键词: 硫化物硫 铁矿石 碘量法 煤矸石 试样 锥形瓶 矿渣 试样分析 硫酸钠溶液 氧化还原反应

以前,测定硫化物硫多采用直接碘量法,即分解试样和氧化还原反应是在同一个锥形瓶中进行。这对矿渣及矿渣水泥中硫化物硫的测定是可行的。表1所列结果表明,对铁矿石试样的分析,采用直接碘量法,尽管以磷酸分解试样,但由于铁的含量较高,仍不能完全消除Fe~(3+)的干扰,使硫化物硫的测定结果显著偏低。

In the past, the direct determination of sulphide sulfur by direct iodometric method, that is, decomposition of the sample and the redox reaction is carried out in the same Erlenmeyer flask. This is feasible for the determination of sulfide sulfur in slag and slag cement. The results presented in Table 1 show that the direct iodine method was used for the analysis of iron ore samples. Although the sample was decomposed by phosphoric acid, the interference of Fe 3+ still could not be completely eliminated due to the high iron content. Sulfur sulfide determination results were significantly lower.