燐酸法に依る砂鐵の T.Fe, TiO_2, 燒結鑛の T.Fe, As の迅速分析法

概要

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Studies & utilizations of sand iron has been developing in Japan. There are many sand iron sources in Hokkaido. Therefore Muroran Iron Works has been using a larger quantity of sand iron as compared with other works. The authors wanted to analyse the sand iron and the sinter mixed with sand iron more rapidly and more accurately. But these samples were difficult to dissolve, so the alkali melting or hydrofluoric acid melting method was applyed in which the platinum or china vessel was required for these analysis. But it was necessary to save such long time required and to save special vessels, and many samples could not be treated in a time for such analysis. The authors found the following method by addition of H_3PO_4 to the samples. 1. Fixing the quantity of T.Fe Add H_3PO_4 to the sample and add a small quantity of HCl to oxidize it to make FeCl_3 after dissolution of the sample and then the quantity of Fe was fixed by the normal method. 2. Fixing the quantity of TiO_2 Add H_2SO_4 & H_3PO_4 to this sample and give to colour with H_2O_2 after dissolution of the sample and then compare it with the standard. 3. Fixing the quantity of As After treating the sample with (1/3H_2SO_4+2/3HCl), add H_3PO_4 to it and dissolved it, and then add the SnCl_2 solution. Thus determine the metallic As and then fix the quantity of the metal. In this paper the simple analytical method was reported.
社団法人日本鉄鋼協会の論文
1953-06-25