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%0 Thesis
%A Nießen, Vera
%T Konfektionierung von Rohstoffgemengen der Glasindustrie mit dem Ziel einer Steigerung der Umsatzgeschwindigkeit
%I RWTH Aachen University
%V Dissertation
%C Aachen
%M RWTH-2017-10531
%P 1 Online-Ressource : Illustrationen
%D 2017
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University 2018
%Z Dissertation, RWTH Aachen University, 2017
%X The failoring of raw materials is driven by the intention to increase the conversion rate of those to a glass melt. In the current work the development rests on an earlier finding by Niggli 1913, and on the observation that the entire amount of limestone and dolomite in a batch can be liquefied by a reaction with soda ash to a salt-like low-viscosity melt below 950 °C. The optimized carbonate can be realized in different ways, e.g., by introducing double carbonate as a novel raw material from the start, or by segmented batching strategies. The new raw material is manufactured by melting sodium carbonate and limestone. This generated double carbonate is characterized thermodynamically newly and kinetically. First, with the help of data out of literature, the exothermal formation of the double carbonate could be verified. As another result of the thermodynamical analysis, it can be shown that for the production of 1 t of glass for a reference batch as well as for a batch including the double carbonate the specific heat Hex is about 610 ± 3 kWh/t. The ± is based on the uncertainties of the calculation of the enthalpy of formation for the different raw materials. Particularly the H° of a natural Dolomite, which is used in the reference batch not in the batch with double carbonate, can deviate ± 1-2 
%F PUB:(DE-HGF)11
%9 Dissertation / PhD Thesis
%R 10.18154/RWTH-2017-10531
%U https://publications.rwth-aachen.de/record/710895