Essays about: "Sulphide"

Showing result 16 - 20 of 68 essays containing the word Sulphide.

  1. 16. U-Pb age constraints on the host rocks of the Barsele Norra Volcanogenic Massive Sulphide deposit, northern Sweden

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Maria Sandlund; [2021]
    Keywords : Geochronology; Skellefte district; Barsele; VMS; LA-ICP-MS; SEM;

    Abstract : The Barsele area is located in the "Gold Line", southwest of the volcanogenic massive sulphide (VMS) Skellefte district which hosts more than 85 known VMS-deposits where some are gold-bearing. The Barsele area consists of the Central, Avan and Skiråsen intrusion hosted gold deposits, the Norra gold-bearing VMS-deposit and the Risberget zone. READ MORE

  3. 17. Evaluation of 25 MHz Ultrasonic Testing for Detection of Non-Metallic Inclusions in Steel

    University essay from KTH/Materialvetenskap

    Author : Henrietta Isaksson; [2021]
    Keywords : Ultrasonic Testing; High Frequency Ultrasonic Testing; Quantification of inclusions; Fatigue Testing; Ultraljudstestning; Högfrekvent ultraljudstestning; Kvantifiering av inneslutningar; Utmattningstestning;

    Abstract : Quantification of inclusions is important since it is correlated to the steel’s fatigue properties. One method that could be further developed for detection of inclusions in steel is ultrasonic testing (UST). READ MORE

  4. 18. Partial hydrodeoxygenation of a heavy bio-based oil fraction : (A technical feasibility study)

    University essay from KTH/Kemiteknik

    Author : Akshay Menon; [2020]
    Keywords : Hydrodeoxygenation; Tall oil pitch; oxygen removal; sulphidation; catalyst;

    Abstract : This report is intended to provide the reader with an extensive background information on hydrode oxygenation (HDO) of Tall Oil Pitch (TOP), combined with results from chemical property analyses of the same. Firstly, the importance of hydrogenation and oxygen removal for a biomass-based feed material is highlighted. READ MORE

  5. 19. Acid Sulphate Soil and Framboidal Pyrite in Northern Sweden

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Hind Rizq; [2020]
    Keywords : Acid Sulphate soil; Framboidal pyrite; Cubic pyrite; Organic matter; Skellefteå; Luleå;

    Abstract : A soil profile was taken close to Skellefteå in Västerbotten, northern Sweden. The profile has an upper oxidised zone, 30 cm thick, underlain by a transitions zone, in this paper called accumulation zone, and a reduced zone at 160 cm depth. READ MORE

  6. 20. Petrography, alteration and structure of the Bronäs Zn-Pb-Ag deposits, Bergslagen, Sweden

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Tom Turner; [2020]
    Keywords : Bronäs; Sala;

    Abstract : This report aims to characterize the alteration styles and mineralization of the Zn-Pb-Ag Bronäs deposit, in the Sala area of the Bergslagen mining district, Sweden.  It presents data collected through 237m of lithological logging and subsequent lithogeochemical data, which, coupled with thin section and SEM analysis has led to the first geological descriptions of the rocks in the deposit. READ MORE