Solvang, M.

Yue, Yuanzheng

Zheng, Qiuju

    Aalborg UniversitetMelt stability and fiberizing window of stone wool compositionsZheng, Qiuju; Solvang, M.; Yue, YuanzhengPublication date:2014Document VersionPeer reviewed versionLink to publication from Aalborg UniversityCitation for published version (APA):Zheng, Q., Solvang, M., & Yue, Y. (2014). Melt stability and fiberizing window of stone wool compositions.Abstract from 1st Joint Meeting of DGG – ACerS GOMD, Aachen, Germany.General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright ownersand it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.            ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research.            ? You may not further distribute the material or use it for any profit-making activity or commercial gain            ? You may freely distribute the URL identifying the publication in the public portal ?Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access tothe work immediately and investigate your claim.Downloaded from vbn.aau.dk on: April 24, 2017Melt stability and fiberizing window of stone wool compositions Qiuju Zheng1, Mette Solvang2, Yuanzheng Yue1 1Section of Chemistry, Aalborg University, 9000 Aalborg, Denmark 2ROCKWOOL International A/S, Hovedgaden 584 2640 Hedehusene, Denmark  Abstract To determine the fiberizing window of a glass melt, it is important to know the melt stability (MS), i.e., the stability of a melt against crystallization during cooling. The MS regime of a melt refers to the supercooled liquid range Tl- Tc’, where Tl is the liquidus temperature and Tc’ is the onset temperature of crystallization during cooling at a given rate. In the fiber production line, fiberization of a glass-forming melt usually takes place slightly above its liquidus temperature. In this paper, we show that Tc’ could be used as the lower temperature limit for fiberizing processes. We establish a link between melts stability and melt spinnablity, by which the fiberizing window of several stone wool compositions can be determined based on the viscosity-temperature relationship and the MS data. The fiberizing window is much wider compared to that determined by the traditional way. We propose a spinnablity parameter (KY) for describing the fiber spinnablity. Furthermore we clarify the correlation between KY and melt fragility for several series of stone wool compositions. KY of each series of these compositions is inversely correlated with melt fragility and in general KY decreases with an increase of melt fragility. We have found an empirical constant ratio between Tc’ and Tl for the studied compositions.   

Melt stability and fiberizing window of stone wool compositions

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Melt stability and fiberizing window of stone wool compositions

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