Search for dissertations about: "slag cleaning"
Showing result 1 - 5 of 8 swedish dissertations containing the words slag cleaning.
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1. Slag Cleaning of a Reduced Iron Silicate Slag by Settling : Influence of Process Parameters and Slag Modification on Copper Content
Abstract : During the pyrometallurgical extraction of copper, a significant part of the copper is lost with discard slag, which decreases profits, overall copper recovery, and efficiency of raw material usage. Smelting furnace slag usually has a copper content that is close to or higher than that of copper ores. READ MORE
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2. Settling Mechanisms of Valuable Metal Droplets in Iron Silicate Slag
Abstract : A significant source of copper losses from pyrometallurgical copper extraction is attributed to dissolved and entrained copper in discarded slag. Entrained copper can be recovered via pyrometallurgical slag cleaning in a settling furnace where the droplets settle under gravity. READ MORE
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3. Opportunities to broaden biomass feedstocks in thermochemical conversion technologies
Abstract : Global environmental concerns are motivating a growing interest in broadening the biomass feedstock base in several energy sectors, including (i) the domestic heating sector, presently dominated by stem wood combustion, and (ii) biofuel production, presently dominated by edible crops. The objective of this thesis is to investigate new opportunities to broaden the biomass feedstock in thermochemical conversion technologies. READ MORE
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4. Mechanisms of Deposit formation in the Grate-kiln Process
Abstract : Fly ash particles from the combustion of coal together with disintegrated particles arising from iron-ore pellets result in accumulation of deposits on the refractory linings of the grate-kiln induration machine during the iron-ore pelletizing process. Deposit formation gives rise to decreased production efficiency, unscheduled shutdowns, high cleaning costs, and equipment failures. READ MORE
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5. Experimental and theoretical studies on treatment and recycling of pickling sludge generated in stainless steel production
Abstract : The thesis work is one of the on-going research projects within MiMeR (Minerals and Metals Recycling Research Centre) at Division of Process Metallurgy, Luleå University of Technology in Sweden. The major objectives of this thesis work are: i) to characterize raw materials and products obtained from experiments, ii) to study the mechanisms of solid-state reduction and smelting reduction of pickling sludge and iii) to test in laboratory different process alternatives to treat and recycle pickling sludge. READ MORE