Search for dissertations about: "slag models"

Showing result 16 - 20 of 57 swedish dissertations containing the words slag models.

2. 16. Slag Formation During Pilot-Scale Pressurised Entrained-Flow Gasification of Woody Biomass

   Author : Charlie Ma; Christoffer Boman; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

   Abstract : Pressurised entrained‐flow gasification (PEFG) of sustainable woody biomass offers the opportunity for envi-ronmentally benign production of syngas that is suitable for synthesis of fuels and other chemicals. During the PEFG process, ash-forming matter in the fuel undergoes transformations. READ MORE

4. 17. Aspects on slag/metal equilibrium calculations and metal droplet characteristics in ladle slags

   Author : Johan Ekengård; KTH; []
   Keywords : ;

   Abstract : In the present work the mixing between the metal and slagphase during the ladle refining process from tapping from theelectric arc furnace to casting in two different Swedish steelplants has been studied.Three slag models and the sulphur-oxygen equilibrium betweenslag and steel was used together with the dilute solution modelfor the liquid steel phase to predict the equilibrium oxygenactivity in steel bulk and metal droplets in top slag inequilibrium with the top slag. READ MORE

5. 18. Experimental studies of ion transport in cementitious materials under partially saturated conditions

   Author : Nilla Olsson; Avdelningen för Byggnadsmaterial; []
   Keywords : Cement; Bruk; Betong; Jontransport; Fukttransport; Sorptionsisoterm; Tillsatsmaterial; Kiselstoft; Masugnsslagg; Ciment; Mortier; Béton; Transport ionique; Transport d humidité; Sorption de vapeur d eau; Additions minérales; Fumée de silice; Laitier de haut fourneau granulé moulu; Cement; Mortar; Concrete; Ion transport; moisture transport; Water vapor sorption; Supplementary cementitious materials SCMs ; Silica fume; Ground granulated blast furnace slag;

   Abstract : Cement production is responsible for a significant portion of manmade CO2 emissions. This motivates the development of cementitious binders with a lower carbon footprint. Considering the emissions in a longer perspective, the durability of concrete structures is absolutely essential. READ MORE

6. 19. Studies on High Alumina Blast Furnace Slags

   Author : Amitabh Shankar; Seshadri Seetharaman; Rob Boom; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Metallurgical process engineering; Metallurgisk processteknik;

   Abstract : In the present work, viscosities and sulphide capacities of high alumina blast furnace slags were investigated. The systems investigated were four component CaO-SiO2-MgO-Al2O3 quaternary system, CaO-SiO2-MgO-Al2O3-TiO2 and CaO-SiO2-MgO-Al2O3-CaF2 quinary systems. READ MORE

7. 20. Mathematical and physical modelling of fluid flow and heat transfer in steel ladles during holding and teeming

   Author : Yuhua Pan; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

   Abstract : Fluid flow and heat transfer in industrial steel ladles during holding and teeming periods were simulated by using three mathematical numerical models and a physical hot-water model. Firstly, based on a finite-difference method, a one-dimensional heat conduction numerical model was established for predicting the heat loss fluxes through ladle wall, bottom and top slag layer. READ MORE