N-arylhydroxamic acids as mineral collectors for ore-beneficiation
✍ Scribed by Ramanathan Natarajan; Inderjit Nirdosh
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 448 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0008-4034
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✦ Synopsis
Abstract
Several arylhydroxamic acids were synthesized, characterized and tested as collectors in the flotation of a Cu‐Zn sulphide ore. Arylhydroxamic acids floated copper in preference to iron and zinc minerals. Substitution in the N‐phenyl ring increased the efficiency of the collector. However, increase in alkyl‐chain beyond C~6~ in the acyl group decreased the flotation efficiency of the collector. N‐butanoylphenylhydroxylamine was found to give the best result and floated about 93 wt% of Cu in about 32 wt% of the feed taken and the collector usage was only about 70 g per tonne of the ore. Pyrite flotation was minimum at pH 11.