Improvement of a continuous process for the production of tungstic trioxide from scheelite : preleaching the scheelite with weak hydrochloric acid / J.A. Vezina and W.A. Gow, Extraction Metallurgy Division. : M34-20/104E-PDF
“The effect of leaching Canadian scheelite concentrates with weak hydrochloric acid at pH 1.0 prior to treatment by a previously described Mines Branch process was investigated. The work showed that the weak-acid leach removed about 25 per cent of the iron, 90 per cent of the phosphorus, 10 per cent of the calcium and 0.1 per cent of the tungsten from a scheelite concentrate analysing 54.4 per cent WO3 , 15.8 per cent CaO, 3.9 per cent Fe, and 0.43 per cent P. The overall cost on the basis of acid consumption and tungsten loss would be about $0.04 less per pound of tungsten than for the original Mines Branch process where the weak-acid leach was not used"--Abstract, p. i.
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| Ministère/Organisme | Canada. Natural Resources Canada. Canada. Mines Branch. |
|---|---|
| Titre | Improvement of a continuous process for the production of tungstic trioxide from scheelite : preleaching the scheelite with weak hydrochloric acid / J.A. Vezina and W.A. Gow, Extraction Metallurgy Division. |
| Titre de la série | Technical bulletin ; TB 104 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Cover title. "December 1969." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. Includes abstract in French. |
| Information sur la publication | Ottawa : Queen's Printer, 1970. |
| Auteur / Contributeur | Vezina, J. A. Gow, W. A. |
| Description | iv, 7 p. |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | 299990 |
| Descripteurs | Chemicals Processing |
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