Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Yosry A. Attia"'
Autor:
John Hanna, Yosry A. Attia
Processing of fine particles has presented numerous challenges to scientists and engineers for many years. Considerable progress has al ready been made in meeting these challenges across various fields of applications around the world. Research on ev
Autor:
Yosry A. Attia, Mohamed S. Ahmed
Publikováno v:
Journal of Non-Crystalline Solids. 186:402-407
Ultraviolet-irradiated titania-silica (TiO2SiO2) aerogels were used as photocatalysts to oxidize/degrade aqueous cyanide species to CO2 and N2. TiO2SiO2 aerogel photocatalysts were prepared by the sol-gel technique and supercritical drying. Thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1370dead4890d05969dbd5788a3435ed
https://doi.org/10.1016/0022-3093(95)00085-2
https://doi.org/10.1016/0022-3093(95)00085-2
Publikováno v:
International Journal of Mineral Processing. 37:61-71
Bacterial conditioning prior to froth flotation has been used to enhance the separation of pyrite from naturally oxidized coal. The pyrite surface in the coal slurry was selectively made more hydrophilic by adapted Thiobacillus ferrooxidans bacteria,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc1c29ce8caae696b79cbbbbacbcd48c
https://doi.org/10.1016/0301-7516(93)90005-u
https://doi.org/10.1016/0301-7516(93)90005-u
Autor:
Yosry A. Attia
Publikováno v:
Mineral Processing and Extractive Metallurgy Review. 11:61-73
This article highlights the kinetic and hydrodynamic aspects of polymer-induced flocculation, as well as some of the common applications of flocculation in mineral processing. Rate equations for polymer adsorption, floe formation, floe growth and bre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1fb6f2cbf4fbc9e5f7fff529e6aacdc
https://doi.org/10.1080/08827509208914214
https://doi.org/10.1080/08827509208914214
Autor:
S. Yu, Yosry A. Attia
Publikováno v:
Separation Science and Technology. 26:803-818
This study investigated the adsorption behavior of a totally hydrophobic polymer, FR-7A, and its role in the flocculation and filtration of fine coal slurries. Adsorption of FR-7A on coal, pyrite, and shale minerals revealed that: (a) FR-7A had a hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78b32cf44612b93a50b9b5cfe807e316
https://doi.org/10.1080/01496399108050497
https://doi.org/10.1080/01496399108050497
Autor:
M. El-Zeky, Yosry A. Attia
Publikováno v:
International Journal of Mineral Processing. 30:99-111
A process employing bioleaching was conceptually developed and tested for the recovery of precious metals from complex sulfide ores and tailings. Since the precious metals were associated with the sulfide minerals, a bulk sulfide flotation concentrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5dfe5bb66a0dfb4ff965c3376f3f79d
https://doi.org/10.1016/0301-7516(90)90068-a
https://doi.org/10.1016/0301-7516(90)90068-a
Autor:
Yosry A. Attia
Publikováno v:
Mineral Processing and Extractive Metallurgy Review. 7:95-114
Terbium metal finds applications in the phosphor industry such as in fluorescent lighting and television tubes, and in the electronic industry for the production of magneto-optical recording media for computer storage discs, and in the production of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1525b16a3067aa127b8511f9c670b50
https://doi.org/10.1080/08827509008952668
https://doi.org/10.1080/08827509008952668
Publikováno v:
Separations Technology. 1:46-54
Experiments are performed to study a novel precombustion coal cleaning process for deashing and desulfurization of high-sulfur coals. The process is based on the integration of selective flocculation and microbial desulfurization in a draft-tube slur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a0f415207ebb2232dd52c377885f349
https://doi.org/10.1016/0956-9618(90)80006-2
https://doi.org/10.1016/0956-9618(90)80006-2
Autor:
Yosry A Attia
Publikováno v:
Sol-Gel Processing and Applications
SolGel Fundamentals: Sol Formation & Polymerization: Effect of Ageing on the Formation, Structure and Crystallization of Titania Colloids (J.R. Bartlett, J.L. Woolfrey). Heterometal Alkoxides as Precursors in the Sol-Gel Process (R.C. Mehrotra). Sol-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9cb23b6431b9463d6596a1cfc4a8e42
https://doi.org/10.1007/978-1-4615-2570-7
https://doi.org/10.1007/978-1-4615-2570-7