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钒渣中钒高达40％左右,主要以钒铁尖晶石相存在,含V_2O_5约95％,金属铁是钒渣中机械夹杂的金属相。金属铁的测定,国内大多采用1.氯化汞-氯化钾;2.硫酸铜-硫酸钾;3.三氯化铁;4.溴甲酚醇法等,上述一些方法对于含低价钒活性氧化亚铁钒渣的测定,用不同方法测定结果和评价均不一致,为此,本文对这些方法进行了一系列比较。 一、溶样时间:1法分解试样快,在5～25分钟内即能溶解完毕;2法和3法适宜的溶样时间分别为10～20分钟和20～40分
Vanadium slag vanadium up to about 40%, mainly in the presence of vanadium iron spinel, containing V_2O_5 about 95%, metallic iron is vanadium slag mechanical inclusion of the metal phase. Determination of metallic iron, mostly used in China 1. Mercuric chloride - potassium chloride; 2. Copper sulfate - potassium sulfate; 3. Ferric chloride; 4. Bromocresol law, some of the above methods for containing vanadium Determination of reactive ferrous oxide vanadium slag by different methods to determine the results and evaluation are inconsistent, for which, this paper conducted a series of comparison of these methods. First, the dissolution time: a method of decomposition of the sample fast, within 5 to 25 minutes to dissolve is completed; 2 method and 3 method appropriate dissolution time was 10 to 20 minutes and 20 to 40 minutes