Sökning: "Copper smelting"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Copper smelting.

  1. 1. Omkonstruktion av mekaniskt arm och varmhållningslock till konverterugn : Konverterhallen, Boliden Rönnskär

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Marcus Stenlund; [2022]
    Nyckelord :värmeöverföring; varmhållningslock; lock; energi; förbränning; besparing;

    Sammanfattning : When the copper production takes place, the pure rock smelting undergoes a sub-processcalled copper conversion. This process is a batch process, which means that the converterfurnace cools down before the next refill. Inside the converter ovens there is a masonrywear brick that is adversely affected when exposed to temperature variations. LÄS MER

  3. 2. Recovery of Cobalt and Copper from Zambia Slag via Sulphidisation with Gypsum

    Master-uppsats, KTH/Materialvetenskap

    Författare :Lloyd Masuzyo Mseteka; [2021]
    Nyckelord :;

    Sammanfattning : The main objective of this research was to recover copper and cobalt from slags coming from copper processing on the Copperbelt province of Zambia. Pyrometallurgical processing of copper sulphide concentrate generates huge tonnes of slag wastes. LÄS MER

  4. 3. Scrubbing of sulfur dioxide from secondary process gases in a copper smelter

    Master-uppsats, KTH/Kemiteknik

    Författare :Obiora Okolo; [2021]
    Nyckelord :sulfur dioxide; scrubbing; smelter; process industry; flue gas desulfurization; svaveldioxid; skrubbning; smältverk; processindustri; rökgasavsvavling;

    Sammanfattning : Processindustrin är den största källan för utsläpp av svaveldioxid (SO2) i Sverige, vilket även inkluderar icke­järnmetallindustrin. Kopparsmältverket Boliden Rönnskär har ett miljötillstånd som tillåter SO2­-utsläpp på maximalt 3500 ton/år, en gräns som Rönnskär har legat nära under de senaste åren. LÄS MER

  5. 4. Effect of iron redox state on crystallization behaviour of Fayalite slags

    Master-uppsats, KTH/Materialvetenskap

    Författare :Paolo Mai; [2020]
    Nyckelord :Copper smelting; Slag; Magnesium Oxide; Iron redox equilibria; Optical basicity; Raman spectroscopy.; Smältning av koppar; Slagg; Magnesiumoxid; Järnredoxjämvikt; Optisk basicitet; Ramanspektroskopi.;

    Sammanfattning : In the copper smelting processes, the viscosity of the matte and the slag is an important factor for establishing efficiency. Impurities in the concentrates affect the viscosity not only by changing the melt structure but also by promoting precipitation of solid phase which sharply rises it. LÄS MER

  7. 5. Energy Efficiency and Carbon Management in Mineral Processing Plants

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Wilson Miti; [2014]
    Nyckelord :Energy Efficiency; Carbon Management; Carbon emissions trading; integrated energy and carbon management; energy-related emissions; mineral processing; carbon emissions in mineral processing; energy and carbon auditing; waste heat recovery in mineral processing; waste heat recovery for power generation; flue gas heat recovery;

    Sammanfattning : Copper processing plants involved in smelting, electro-refining and electro-winning are heat-intensive undertakings that provide extensive challenges for attainment of high energy efficiency. Literature has shown that most of these plants, especially smelters, operate at low overall energy efficiency due to the seemingly complex energy scenario where heat and electricity as forms of energy are treated distinctively from each other. LÄS MER