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Showing 1 to 20 of 310 for “"sulphide"”.
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Sulphide ore minerals:surface chemical properties
The surfaces of iron-containing sulphide minerals were oxidised by a range of inorganic oxidants, and the resultant surface alteration products studied using various spectroscopic techniques. The characterisation of surface oxidation is relevant to the alteration of ores in nature and their …
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Oxidation kinetics of molten copper sulphide
The oxidation kinetics of molten copper sulphide were investigated by quantitative measurements and qualitative observations. Off-gas analyses for SO2 and 02 were conducted to determine the oxidation rates of approximately 200-gram samples, ofmolten 99.5% Cu2S. The molten sulphide was held in …
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The hydrolysis of ammonium sulphide, and the dissociation of the first and second hydrogen of hydrogen sulphide
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemistry, 1903
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Investigation of silicon-cadmium sulphide heterojunction photodetectors
Abstract available p. 4
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Stabilisation of sulphide rich soil: problems and solutions
… or 6%CaO) on various engineering properties of a sulphide (pyrites) rich, naturally occurring clay - Lower Oxford Clay (LOC) - were studied. Experimental tests representing, or relating to, tests outlined in the Design and Construction of Lime Stabilised Capping Specification (DoT, 1995) were …
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HYDROLOGICAL CHARACTERIZATION OF A SULPHIDE WASTE ROCK DUMP
Acid rock drainage (ARD) from sulphide bearing waste rock dumps poses a serious threat to the environment and has become problematic to the mining industry. Water that is discharged from sulphide waste rock dumps has the potential to be low in pH, thus having the ability to transport heavy metals. …
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Investigation of thin-film cadmium sulphide solar cells
Abstract available: p 1.
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Copper sulphide precipitation in a fluidised bed reactor
… the removal of a single heavy metal (copper) by sulphide precipitation from a copper rich stream in a fluidised bed reactor, as well as developing an understanding of the behaviour of the copper sulphide system.
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Pyritic smelting of a nickel-copper sulphide ore
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mining Engineering and Metallurgy, 1910.
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The reactivity of ferric (hydr)oxides towards dissolved sulphide
… ferric (hydr)oxides are reduced by dissolved sulphide or by microorganisms. This reaction generates Fe(II) which may precipitate as iron hydroxide, adsorb to the ferric (hydr)oxide surfaces and transform the ferric (hydr)oxides into more stable minerals, or precipitate as iron sulphide. During …
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Stratabound and Stratiform Sulphide Mineralisation in the Scottish Dalradian
… Supergroup of Scotland, massive strata-bound sulphide deposits occur which have a higher than average cobalt abundances. Two sites of interest were identified, Coille Bhraghad near Inveraray in south-west Scotland, and Vidlin Voe on the east coast of the Shetland Islands. Analysis of samples …
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The geochemistry and geomicrobiology of relict hydrothermal sulphide deposits
The diagenetic re-mineralisation of seafloor-sulphide deposits and the role of microbes in the metal-exchange processes were investigated in metalliferous sediments from the Alvin relict hydrothermal zone in the TAG area at 26º8'N (Mid-Atlantic Ridge). The solid-phase and concomitant pore water …
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Gallium lanthanum sulphide glasses for near-infrared photonic applications
This thesis investigates gallium lanthanum oxysulphide (GLS) glasses for potential fibre device applications. GLS glasses have low phonon energy and high rare earth solubility, which makes them candidates for rare earth-doped devices, and in particular for the 1.3 µm praseodymium-doped optical …
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Solvothermal synthesis and characterisation of novel Gallium-sulphide compounds
In this thesis, novel supertetrahedral gallium-sulphide compounds were synthesised under solvothermal conditions. Three-dimensional frameworks, which are analogous to previously reported structures, along with a large number of new hybrid supertetrahedral compounds were produced. Inorganic …
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A nonlinear study of electrode impedance in sulphide minerals
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
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Electrooptic modulation of infrared radiation in planar cadmium sulphide waveguides
Abstract available p. 6-7
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Hydrogen sulphide in the well waters of Chicago and vicinity
Made available in DSpace on 2017-11-30T22:11:15Z (GMT). No. of bitstreams: 2 5990991.pdf: 4362844 bytes, checksum: 07d6623c0ec052c96aa444385f6a4785 (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1915
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Post precipitation treatment of copper sulphide particles to improve settleability
In various attempts at producing metal sulphide particles from synthetic solutions, prodigious quantities of nuclei which grow only to colloidal dimensions have been frequently reported. This copious nucleation is promoted by high levels of supersaturation which characterises most precipitation …
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