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Abstract
A scheme has been described for rapid, accurate and complete analysis of chrome bearing materials. The sample after fusion with Na2O2 in a Ni crucible was taken in H2SO4 and diluted to volume. Separate aliquots were used for determination of SiO2 by a modified K2SiF6 method, total Fe2O3 by titration with Hg2(NO3)2 and Cr2O3 by ferrous ammonium sulphate-dichromate titration. Another aliquot was electrolysed in a mercury cathode apparatus, diluted to volume and aliquots of the solution were taken for determination of Al2O3, CaO and MgO by EDTA titration and TiO2 by spectrophotometry as yellow peroxy complex. From separate openings alkalies and MnO were estimated by flame and spectrophotometry respectively. Most of the methods are independent and selective.