Zobrazeno 1 - 10
of 78
pro vyhledávání: '"F.F. Aplan"'
Publikováno v:
International Journal of Mineral Processing. 58:1-13
Though xanthogen formates have long been used as sulfide mineral collectors, they have been largely ignored by the research community. The flotation of chalcopyrite, chalcocite, covellite, bornite and pyrite with this class of collector has been eval
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03930062f884f37461d95f496aee959d
https://doi.org/10.1016/s0301-7516(99)00068-x
https://doi.org/10.1016/s0301-7516(99)00068-x
Publikováno v:
Mining, Metallurgy & Exploration. 16:18-26
Residence-time distribution techniques are useful tools in the analysis, characterization and modeling of the performance of processing equipment and circuits. This paper presents the results of both conventional and more-sophisticated residence-time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::919c4121263a1ca0be367da481e3052f
https://doi.org/10.1007/bf03402852
https://doi.org/10.1007/bf03402852
Publikováno v:
International Journal of Mineral Processing. 42:225-240
The flotation process may be considered an interactive system consisting of many chemical, operational, and equipment variables. Changing any one of these variables causes an overall system response change. This study examines the effects of simultan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2bb385c5ae639528582fcfe5f057595
https://doi.org/10.1016/0301-7516(94)00029-8
https://doi.org/10.1016/0301-7516(94)00029-8
Autor:
F.F. Aplan, C.E. Raleigh
While much data from the froth flotation of bituminous coals indicate that liberated mineral matter enters the clean coal froth by way of water carry-over, other results show that discrete sulfur-bearing and ash-forming minerals can be collected by e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5ee6a6d4460d0e37a4ea7d92d262c19
https://doi.org/10.1016/b978-0-444-81476-0.50014-4
https://doi.org/10.1016/b978-0-444-81476-0.50014-4
Autor:
S. Chander, F.F. Aplan
The main objective of this research project is to study ways to modify surface properties of coal, pyrite and ash-forming mineral matter for beneficiation of fine coal. Since the differences in surface properties of coal and mineral matter are utiliz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04130893fa4c54c2d2ed30b26d33a9d3
https://doi.org/10.2172/5670780
https://doi.org/10.2172/5670780
Autor:
F.F. Aplan, S. Chander
This report will focus on means of pyrite removal from coal using surface-based coal cleaning technologies. The major subjects being addressed in this study are the natural and modulated surface properties of coal and pyrite and how they may best be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a76a61e1ae4938c5870d2e81e291c9cd
https://doi.org/10.2172/10133130
https://doi.org/10.2172/10133130
Publikováno v:
Colloids and Surfaces. 26:205-216
The wetting behavior of coal has been determined in the presence of nonyl and octyl series of nonionic surfactants containing polyethoxy groups of different sizes. The wetting behavior was determined by a modified Walker technique and contact angle m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48a4dd5124f4d5376595b348aa4c6c43
https://doi.org/10.1016/0166-6622(87)80117-8
https://doi.org/10.1016/0166-6622(87)80117-8
Autor:
B.J. Arnold, F.F. Aplan
Publikováno v:
International Journal of Mineral Processing. 17:243-260
Suspended clay solids, ions, pH and humic acid are shown to have a significant influence on coal flotation. Coal flotation is greater in tap than in distilled water. This is believed due to instability and thinning of the hydrated layer at the surfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::506f7a3d218246920e7d9e997039dee5
https://doi.org/10.1016/0301-7516(86)90059-1
https://doi.org/10.1016/0301-7516(86)90059-1
Publikováno v:
International Journal of Mineral Processing. 21:173-184
Cassiterite flotation, irrespective of trace element dopant, follows the electrostatic theory of flotation with sodium dodecyl sulfate and dodecyl ammonium acetate collectors. This appears to be the underlying mechanism for cassiterite flotation with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a6434ed862b3668f6638b6214f922b8
https://doi.org/10.1016/0301-7516(87)90052-4
https://doi.org/10.1016/0301-7516(87)90052-4
Publikováno v:
Colloids and Surfaces. 12:1-25
Based on contact-angle measurements and the work of adhesion equation, the hydrophobicity of a wide variety of coals was found to decrease with decreasing rank, fixed carbon and total carbon content and with increasing oxygen and hydroxyl content. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0aa717168ae5dc1fcdbb80ac5ff2c747
https://doi.org/10.1016/0166-6622(84)80086-4
https://doi.org/10.1016/0166-6622(84)80086-4