Developments in Fine Coal Beneficiation in South Africa
作者:
J.-P. FRANZIDIS,
期刊:
Coal Preparation
(Taylor Available online 1992)
卷期:
Volume 11,
issue 1-2
页码: 103-114
ISSN:0734-9343
年代: 1992
DOI:10.1080/07349349208905211
出版商: Taylor & Francis Group
关键词: Fine coal cleaning;Froth flotation;Column flotation;Liberation;Spiral concentration;South Africa
数据来源: Taylor
摘要:
Fine coal cleaning has come a long way in South Africa in the past decade, as evidenced by the installation of 5 Mtpa of spiral plant capacity, the re-appraisal of froth notation technology resulting in major modifications to most operating flotation plants, and vigorous research into column flotation and oil agglomeration. This paper reviews the developments which have been made, and the reasons, both metallurgical and economic, which have given rise to these developments. In particular, the nature of South African coals makes it preferable to treat the fines in separate size fractions, comprising −0.5 +0.1 mm “fines” and −0.1 mm “ultrafines”, using equipment of different separating efficiency, depending on the desired quality of the final product.
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