Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 7 of 7 for “"Unleached"”.
-
Mineralogical Characterization of Uranium Ores, Blends and Resulting Leach Residues from Key Lake Pilot Plant, Saskatchewan, Canada
… 37% molybdenite, and 52 to 70% galena remained unleached in the leach residues after milling of the ore blends. The percentages of unleached minerals varied between mill feeds and were dependent on the grain-size distribution and the degree of mineral liberation. Cation exchange capacity (CEC) …
-
Evaluating the effect of alternative neutralising agent and seeding on the zinc recovery through the Zincor iron removal circuit
… ferrite, as well as the phenomenon of coating of unleached neutralising agent by iron precipitate. The soluble zinc loss was a function of the dewatering characteristics of the precipitate. The work included the evaluation of alternative neutralising agents to supplement or replace calcine, as …
-
Electrorefining of base metal refinery residue copper alloy for platinum group metal recovery
… It contains mainly sulphur, iron jarosites, unleached base metals and platinum group metals (PGMs), which makes the treatment of SLC necessary. The SLC is currently toll-refined at Umicore’s Hoboken smelter and refinery to recover revenue from entrapped valuable metals. This method of …
-
Thermal gradients and water transfer in unsaturated soil.
… in a leached soil with no air gap than in an unleached soil with no air gap. There was supporting evidence that liquid water continuity did not exist throughout the column since there was no appreciable solute transport. The observed change in soil water content distribution at 18.0 cm³/cm³ to …
-
Chemical and biological factors affecting the performance of CCA and ACA treated wood in soil
… during the decay process. Losses of copper from unleached ACA treated blocks exposed to soil exceeded those observed during aqueous leaching.<br/><br/>The lignin nitrogen contents of untreated and ACA treated pine blocks increased during soil burial. This accumulation of nitrogen on lignin was …
-
The nanostructure and degradation of C-S-H in Portland and blended cements
… structural units in the C-S-H present in the unleached and four weeks water leached systems analysed by TEM-EDX. lp C-S-H morphology was fine and homogeneous and Op C-S-H had fibrillar morphology. There were many areas in the microstructure of the leached sample where Op C-S-H with foil-like …
-
Delineation of the Cardioprotective Agents found in red wine
… It contains mainly sulphur, iron jarosites, unleached base metals and platinum group metals (PGMs), which makes the treatment of SLC necessary. The SLC is currently toll-refined at Umicore's Hoboken smelter and refinery to recover revenue from entrapped valuable metals. This method of …