Portable furnace for assaying a crushed ore sample Ein neues Verfahren zur Untersuchung von Verschlackungsvorgängen an feuerfesten Steinen Über den Einfluß der Viskosität auf die Verschlackung von feuerfesten Steinen Basic Theory of Cement Colouring RESEARCHES ON SPINNERET ASSEMBLY FOR THE ULTRA-FINE "ISLANDS-IN-THE-SEA"MATRIX-FIBRE OF PET Method and apparatus for the recovery of the secondary metallurgy (LF) slag and its recycling in the steel production process by mea... Method and apparatus for pyrolytically reducing waste Process for purifying silicon Process and apparatus for refining steel in a metallurgical vessel Process for preparing fluxing materials