Blar i Institutt for materialteknologi på tittel
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Recycling of Aluminium from Mixed Household Waste
(Chapter, 2020)Aluminium is used in packaging due to its density, strength and preservative capabilities. This paper outlines a methodology to evaluate the recyclability of aluminium waste, where parameters of scrap type, pre-treatment ... -
Recycling of Aluminum Scrap by Severe Plastic Deformation
(Journal article; Peer reviewed, 2011)The production of primary aluminum is an energy costly process. With the global warming being of concern, the secondary aluminum stream is becoming an even more important component of aluminum production and is attractive ... -
Recycling of automotive aluminum
(Journal article; Peer reviewed, 2010)With the global warming of concern, the secondary aluminum stream is becoming an even more important component of aluminum production and is attractive because of its economic and environmental benefits. In this work, ... -
Recycling of Fine Silicon Particles for Solar Grade Silicon Production
(Master thesis, 2018)The production of solar grade silicon wafers results in 50% wasted silicon. Due to the high volume of waste, recycling the fines into a useable material allows for use of all this valuable silicon. Currently there is no ... -
Recycling of Glass Wool Waste
(Master thesis, 2018)The importance of environmentally friendly solution is an ever-increasing concern of industries all over the country. The glass wool industry has for a long time had a problem regarding waste from their production process. ... -
Recycling of industrial silicon-kerf waste via leaching and flux-melting.
(Bachelor thesis, 2023)Produksjonen av solar grade silisium oblater som brukes i solcelleproduksjon er en lang og kompleks prosess som resultater i at 50% av rent silisium blir kastet vekk etter kutte prossesen. Dette har vært et problem som har ... -
Recycling of tellurium via copper smelting processes
(Peer reviewed; Journal article, 2020)The modern world continuously demands more raw materials for manufacturing all kinds of products. Nowadays, the lifetime of a single product can be very short, as is the case with electronic appliances. Waste electrical ... -
Recycling of the Rare Earth Oxides from Spent Rechargeable Batteries Using Waste Metallurgical Slags
(Journal article; Peer reviewed, 2013)A high temperature process for recycling spent nickel-metal hydride rechargeable batteries has been recently developed at SINTEF/NTNU. The spent battery modules were first frozen with liquid nitrogen for the de-activation ... -
Reducing the Carbon Footprint: Primary Production of Aluminum and Silicon with Changing Energy Systems
(Peer reviewed; Journal article, 2021)The world now pushes for a low-carbon future, and international goals for greenhouse gas emission reductions have been set. Industrial processes, including metallurgical processes, make up more than a fifth of the total ... -
Reduction and Dissolution Behaviour of Manganese Slag in the Ferromanganese Process
(Journal article; Peer reviewed, 2020)The reduction and liquidus behaviour of manganese slag with different basicities were studied in non-isothermal experiments in the temperature range of 1400–1500 °C. Certain amounts of quartz were added to Assmang ore ... -
Reduction Mechanisms in Manganese Ore and Deposition of Carbon from Natural Gas
(Master thesis, 2017)This report investigates the deposition of carbon from natural gas onto manganese ore and the effect of reduction of the higher manganese oxides. Manganese ore has been heated in an argon atmosphere, before methane was ... -
Reduction of bauxite and Alcontaining waste to produce calcium aluminate slags and iron
(Doctoral theses at NTNU;2021:192, Doctoral thesis, 2021)The production of metallurgical grade Al2O3 from bauxite ores is mainly done through the Bayer process. This process is well established and efficient, but it has environmental challenges, and the main being the formation ... -
Reduction of commercial hematite pellet in isothermal fixed bed-experiments and numerical modelling
(Journal article; Peer reviewed, 2016)In the present work, fixed bed reduction experiments were conducted at 1173 K over a range of H2/CO ratios from 0.8 to 2.0 and subsequently modelled numerically. The model consists of two one-dimensional, isothermal and ... -
Reduction of Manganese Ore Agglomerates
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:344, Doctoral thesis, 2013) -
Reduction of Manganese Ores in CO-CO2 Atmospheres
(Peer reviewed; Journal article, 2021)The reduction of higher manganese oxides to MnO in the prereduction zone of a ferromanganese furnace is largely decisive for the overall energy efficiency and climate gas emissions for the overall production process. ... -
Reduction of MnO and SiO2 from Assmang and Comilog based Slags
(Master thesis, 2017)Silicomanganese(SiMn) and ferromanganese (FeMn) represent essential ingredients for the steel producing industries due to enhancing effects on steel quality. While extensive efforts have been made in investigating the ... -
Reduction of Norwegian and Indian ilmenite with carbon monoxide and hydrogen gas blends
(Journal article, 2016)Synthesis gas, produced from natural gas, can be used to minimise coal consumption and carbon dioxide emissions during the processing of ilmenite. Two different ilmenite ores have been reduced with carbon monoxide and ... -
Reduction of Pelletized Tyssedal Ilmenite and the Effect of Changing Gas Composition and Flow, Pellet Size and Pre Oxidation Condition
(Master thesis, 2011)This master thesis is based on reduction experiments of pelletized Tyssedal ilmenite. The focus is set on the effect of changing parameters such as gas composition, gas flow, pellet size and pre-oxidation condition. The ... -
Reduction of SilicoManganese Slags - Comparing Coke and Charcoal as Reductants
(Master thesis, 2023)Produksjonen av silisiummangan (SiMn) er en karbotermisk reduksjonsprosess. Prosessen benytter seg hovedsakelig av det fossile karbonmaterialet koks som reduksjonsmiddel. Økende miljøbekymringer har ført til større intensiver ... -
Reduction of SiO2 to SiC using natural gas
(Journal article; Peer reviewed, 2014)This paper presents a preliminary study of SiC production by use of natural gas for reduction of silica. Direct reduction of SiO2 by gas mixtures containing CH4, H2, and Ar was studied at temperatures between 1273 K and ...