Padhhl, K K and Chatterjee, A K and Pandey, L P (1997) Determination of tungsten in benificiation products of wolframite bearing granites from Degana area, Rajasthan. In: UNSPECIFIED.
Large deposit of wolframite and scheelite become a source of an important strategic metal like tungsten. During XRF analysis of tungsten from low grade tungsten ore from Degana, it was ob¬served that there was marked difference in the analytical values of tungsten estimated by different methods. The problem of martrix in the low grade tungsten ore was found which adversely affects the results even when standards for calibration were selected from the similar origin. In the present study, influence coefficient (al¬pha) was calculated using secondary standards. Mathematical correction models proposed by de jongh, Rasberrv and Heinrich and Lucas-Tooth-P yne were applied. It was observed that the re¬sults were significantly improved after applying this correction. Experimental condition as well as comparison between the results obtained through these correction models have been computed. Results obtained by this technique were compared with secondary standards and found to be of high accuracy. Out of the three mod¬els it was observed that Ra.sbernv and Heinrich model is more suitable for accurate results.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Uncontrolled Keywords:||Tungsten; Wolframite; Granites|
|Deposited By:||INVALID USER|
|Deposited On:||13 Sep 2010 15:41|
|Last Modified:||13 Jan 2012 12:48|
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