Abstract The thermal conductivity of a single-phase gehlenite (2CaO Al 2 O 3 SiO ) sample was determined using microscopy. composition the primary crystal region CaO: :Al = 38:28:34 (mass%), which maintained after melting and cooling. After polishing samples, size sufficiently large to be measured microscope. value $$\sqrt{\lambda C\rho }$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathM...

To understand and clarify the formation mechanisms evolution of complex inclusions in Ti-Ca deoxidized offshore structural steel, industrial steel were systematically investigated. The number density total generally decreased from Ladle Furnace (LF), Vacuum Degassing (VD), Tundish to final product except for Ti Ca addition. major during refining process CaO-Al2O3-SiO2-(MgO)-TiOx CaO-Al2O3-SiO2....

Colemanite is one of the most important underground riches of Turkey, having approximately 60% of the world boron deposits, and it has a large portion in the deposits. In this study, chemical leaching and biological leaching methods were used for production of boric acid from colemanite (2CaO · 3B3O3 · 5H2O) (Emet-Kütahya, Turkey). Oxalic acid concentration, temperature, stirring time and solid...