Ceramics-Silikáty 48 (3) 128-134 (2004)

SIMULATION OF THE EFFECT OF MELT COMPOSITION ON MINERAL WOOL FIBRE THICKNESS

B. Blagojević, B. Širok, B. Štremfelj

This article presents an analysis of the influence of chemical composition of the melt on the thickness of mineral wool fibres produced industrially on a double-disc spinning machine. To calculate density, viscosity and surface tension of a multi-component silicate melt, several parameters as well as own constitutive equations were included in the model. The proposed regression model was verified and fitted by the measurement of the thickness of an industrial fibre of known chemical composition and produced under defined technological parameters, i.e. radius of spinning discs, disc rotational speed, thickness of the melt film and melt volume flow rate. Verified model brings a possibility to simulate the fibre thickness when changing both technological process parameters and chemical composition of the melt.

Keywords: Mineral wool, Fibre thickness, Regression model