| Rapid Analysis of Chromite, Chrome Ore and
Chrome bearing Materials |
B. C. SINHA AND S. K. RoY
Pages : 118-133
DOI : 10.1080/0371750X.1970.10855737 |
| Abstract |
| A scheme has been described for rapid, accurate and complete analysis of chrome
bearing materials. The sample after fusion with Na20 2 in a Ni crucible was taken in
H2SO4 and diluted to volume. Separate aliquots were used for determination
of Si02 by a modified K2SiF6 method, total Fe20 3 by titration with HglN03} 2 and
Cr20 3 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 Al20 3, CaO and MgO by EDT A titration and Ti02 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. |
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