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Composition - microstructure - property relationships in dual phase bulk magnetoelectric compositeIslam, Rashed Adnan. January 2008 (has links)
Thesis (Ph.D.) -- University of Texas at Arlington, 2008.
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A study of cast iron using quantitative metallography.Paley, Zvi. January 1966 (has links)
The work described in this thesis is divided into two parts. Part I is concerned with the volume fraction estimation of phases in metallurgical microstructures. A rapid method of phase analysis, using a modified form of point counting, is described and experiments on various kinds of cast irons are reported. [...]
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Radiation losses in metallurgical furnacesLoveridge, Frank Richard. January 1900 (has links) (PDF)
Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1909. / Degree of Bachelor of Science in Mining Engineering awarded in 1909 determined from "1874-1999 MSM-UMR Alumni Directory". The entire thesis text is included in file. Typescript. Illustrated by author. Title from title screen of thesis/dissertation PDF file (viewed April 24, 2009)
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Removal of heavy metals using granular coalRiaz, Muhammad January 1974 (has links)
In view of very high toxicity potential of some heavy metals to aquatic life, there is a need for critical evaluation of known methods and development of new methods for purifying water and waste-water containing heavy metals. In this study, batch tests were performed to evaluate the relative efficiencies of six British Columbia coals in removing heavy metals (copper, lead, mercury and zinc) from water. On the basis of batch test data obtained, the best two coals, Kaiser Coal-Stock Pile Refuse and Kaiser Coal-Special Plant Feed, were tested on a continuous flow laboratory scale. The emphasis was placed on metal concentrations of 2 mg/1 and less for copper, lead and zinc and 5 vg/1 for mercury. The effects of adsorbate concentration, flow rate through the column (contact time), and pH of the solution on the adsorptive capacity of coal were investigated. A solution containing 0.5 mg/1 of each of copper, lead and zinc was tested to investigate the ability of the coal to remove metals from a mixture of many metals. The adsorptive capacity of the best two coals was also compared with some commercially available adsorbents. On the basis of capacity and rate of adsorption, Kaiser Coal-Stock Pile Refuse was found to be the best of the six coals tested. For the specific testing conditions in this investigation, the better metal-removing efficiency of coal as compared with activated carbon and nitrohumic acid indicate that the coal may be a feasible alternate to purify effluents containing heavy metals / Applied Science, Faculty of / Civil Engineering, Department of / Graduate
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A study of cast iron using quantitative metallography.Paley, Zvi. January 1966 (has links)
No description available.
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The influence of certain factors and impurities on the precipitation of gold from cyanide solution by zinc dust.Leblanc, Raymond F. January 1940 (has links)
No description available.
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The adsorption of potassium octyl hydroxamate on malachiteLe Normand, Jacques January 1974 (has links)
No description available.
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Modelling inclusion behaviour and slag entrainement in liquid steel processing vessels.Tanaka, Shigenori. January 1986 (has links)
No description available.
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Preparation and processing of fine copper powders from organic media.Sarraf-Mamoory, Rasoul. January 1992 (has links)
No description available.
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High temperature phase equilibria in the Fe-Co-Cu-Si system pertinent to slag cleaningBanda, Wezi 12 1900 (has links)
Thesis (PhD (Process Engineering))--University of Stellenbosch, 2006. / In the smelting of copper waste slags to recover cobalt and copper, the prediction of the metal
liquidus temperature and the associated superheat for liquid metal handling for subsequent
treatments cannot be done with certainty, making the management of furnace integrity very
difficult. By studying the phase equilibria and solution thermodynamics in liquid ferrocobalt new
experimental data on the liquidus temperature and phase equilibria of the quaternary system can
contribute to the improvement of existing copper slag smelting processes. This will alleviate the
operational uncertainties and difficulties associated with ferrocobalt production in electric arc
furnaces.
There is no specific literature available that describes the physicochemical and thermochemical
properties of the ferrocobalt produced from smelting of waste copper slags. Therefore, the
quaternary system Fe-Co-Cu-Si has been characterised by studying and reviewing the binary and
ternary subsystems with respect to the high temperature phase equilibria.
The ferrocobalt metal has been modelled on the Fe-Co-Cu-Si quaternary system. The liquidus
temperatures and phase equilibria in the Fe-Co-Cu-Si system, within the composition and
temperature regimes pertinent to smelting of slag, were investigated by differential thermal
analysis and metallography. Drop-quench techniques coupled with scanning electron microscopy
were used to study the phase equilibria. The activity of silicon in liquid Fe-Co-Cu-Si at 1450 °C
was calculated from gas-alloy-silica equilibrium experiments conducted in controlled oxygen
partial pressure atmospheres at 10-13
P, 10P
-14
P, and 10P
-15
atmosphere (absolute) corresponding to the
conditions found in the industrial application.
The liquidus temperature of the quaternary Fe-Co-Cu-Si is influenced by the content of silicon in
the system. When silicon is added to the Fe-Co-Cu ternary the liquidus temperature is lowered in
the new system (Fe-Co-Cu-Si). In the range of silicon content studied (0 0.1) < XSi ≤ , the
liquidus temperature decreased by over 70 °C. The liquidus temperature profiles of the
subsystems of the quaternary Fe-Co-Cu-Si, show large composition dependence too, except in
the Fe-Co system. In the ternary Fe-Co-Cu, the liquidus temperature decreases with increasing
copper content and is characteristic of the profiles of the liquidus lines in the binary subsystems
Fe-Cu and Co-Cu.In the dilute concentrations of silicon, it is shown that the phase equilibria in the quaternary
system have attributes of the Fe-Si and Fe-Cu-Si systems. Silicon is associated more with the
iron rich phase than it is with the copper rich phase. It stabilises the metastable liquid
immiscibility when added to the Fe-Cu, Co-Cu, and Fe-Co-Cu in the corresponding ternary
systems Fe-Cu-Si, Co-Cu-Si and quaternary Fe-Co-Cu-Si system.
The activity of silicon in liquid Fe-Co-Cu-Si at 1450 °C, in the composition range 1 to 5 wt. %Si
exhibits a negative deviation from ideal liquid solution behaviour. The activity coefficient
approaches a constant value of 0.2×10P
-3
P, with pure liquid silicon as reference state, as the silicon
concentration approaches zero implying a Henrian solution behaviour. This information should
be useful in the thermodynamic modelling of the system.
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