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測定铁矿中全鉄几乎所有的方法都要用濃盐酸来溶解矿样。但由于目前盐酸供应不足,为了克服困难,完成大量的鉄矿比驗任务,笔者曾提出用硫酸加氯化鈉来代替盐酸,經大家研究改进取得了良好的結果。現将操作方法介紹于下供大家参考。精秤0.2克研細至160目烘干之矿样,置于25毫升瓷坩堝中,加0.3～0.5克无水碳酸鈉,用玻棒搅匀,于800～850℃馬福爐中燒結一分鐘,取出冷却(此时应燒結成块状)小心移至500毫升三角瓶中,
Determination of iron 全 almost all of the methods used to dissolve the mineral sample with concentrated hydrochloric acid. However, due to lack of supply of hydrochloric acid, in order to overcome the difficulties and accomplish a large number of quarrying tasks, the author proposed that sulfuric acid and sodium chloride should be used instead of hydrochloric acid and good results have been obtained after all the research was improved. Now the operation method introduced in the next for your reference. Weighing 0.2 grams of fine grinding to 160 mesh dried ore samples, placed in 25 ml porcelain crucible, plus 0.3 to 0.5 grams of anhydrous sodium carbonate, with a glass stir, muffle furnace at 800 ~ 850 ℃ sintering for one minute, Remove the cooling (this time should be sintered into a block) Carefully moved to 500 ml flask,