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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 81 to 90 of 716 (0.032 seconds)| 81 |
Experimental deformation of sulfide ores.Pendala, Krishnamurthy January 1967 (has links)
No description available.
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Liquidus phase relations in the FeS-FeO-Fe3O4-SiO2 system, and their application in geology.MacLean, W. H., 1931- January 1968 (has links)
No description available.
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The Melting Behaviour of Coal Ore CompositesRoodsari, Mahshid Fathi 04 1900 (has links)
A breakthrough ironmaking technology (1Tmk3) produces iron separated from slag by heating coal-iron ore composite pellets at temperatures as low as 1325C in about 10 minutes. Other researchers have studied the melting behavior, including the formation of a dense metallic shell separated from slag but the mechanism has not been yet fully understood. Exploring this knowledge gap was targeted in this study. The initial experiments included heating of composite samples at different temperatures and time intervals. Three coal types and two coal/ore ratios were investigated. By these experiments slag free iron production at low
temperature and short time was confirmed. Coal type and coal/ore ratio were found to have a
significant effect on melting behavior. The main series of experiments focused on the effect of slag composition mainly CaO and Si02, slag content and reaction time on the melting behavior. The main characterization methods included Optical Microscopy, Energy
Dispersed X-ray Analysis (EDX), and simultaneous Differential Thermal Analysis (DTA), and Thermo Gravimetric Analysis (TGA). Despite most of the obtained results being qualitative, this study was successful in exploring some of the most important reasons behind the melting behavior of coal ore composites. It was revealed that the formation of a low melting point slag containing FeO in the core of the pellet and its exudation to the iron shell is responsible for the formation of a dense metallic shell. Densification of iron occurs by reduction of FeO in slag. The rate and extent of reduction is related to the physical properties of slag that in turn is influenced by slag composition. More basic slags tend to have higher rate of FeO reduction in slag. By reduction of FeO in slag, the interfacial tension of the remaining slag with iron increases and slag is separated from iron. / Thesis / Master of Materials Science and Engineering (MMatSE)
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Electrochemical potentials in flotation systems : measurement, interpretation and applicationsLabonté, Germain, 1960- January 1987 (has links)
No description available.
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| 85 |
Mineral liberation through confined particle bed breakageFandrich, Rolf Gerald. Unknown Date (has links)
No description available.
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A means of making a segregate preparatory to chemical analysis of the sulphide minerals in a low-grade dolomitic ore-pulp containing lead, zinc, and copperClemmer, J. B. January 1928 (has links) (PDF)
Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1928. / The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed October 21, 2009) Includes bibliographical references (p. 103).
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Tecnologia de purificacao de concentrados de torio e sua transformacao em produtos de pureza nuclear. Estudo do sitema TH(NOsub (3)) sub(4) -HNOsub(3)-TBP-varsol)IKUTA, ALVARO 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:24:25Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:04:22Z (GMT). No. of bitstreams: 1
00020.pdf: 1979654 bytes, checksum: 18bc314b5b9ffe69f9ca23c2ea9dd3b2 (MD5) / Dissertacao (Mestrado) / IEA/D / Escola Politecnica, Universidade de Sao Paulo - POLI/USP
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Crushing mechanisms and mineral releaseFletcher, Andrew January 1990 (has links)
No description available.
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| 89 |
Aspects of fracturing, fissuring and fluid movement at red bed unconformitiesRigby, S. January 1984 (has links)
No description available.
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| 90 |
Computer modelling of comminution and classification plantCalvert, M. January 1986 (has links)
No description available.
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