By Wilhelm Eitel
Silicate technology, quantity VIII: commercial Glass: Glazes and Enamels offers a targeted dialogue concerning glass fusion furnace development in addition to development for the potency of a number of the platforms all in favour of glass engineering. The study papers awarded during this quantity are constrained within the dialogue of the actual and chemical response phenomena which take place in glass tank furnace and electrical furnaces of different shapes.
The ebook contains of six significant chapters the place a few chapters additional divide into elements. lots of the themes coated during this booklet contain vital advancements within the reactions of a few batches, homogenization and fining of uncooked melts, and the habit of the glass melts in occasions the place refractories come into touch with the molten fabric.
This quantity will function a wealthy resource of data to scholars and researchers within the glass engineering, production, and expertise.
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Extra resources for Industrial Glass: Glazes and Enamels
Gorman, 1 16 pursue the Ca diffusion during the dissolution of limestone and dolomite in the batch mixes, the activation energy of which can be determined with essential results and conclusions. In this investigation, full evidence was given of how C a 2 + cations and 02~ anions migrate simultaneously in the diffusion flow preserving electroneutrality under given concentration gradients. The electron microprobe data distinctly speak in favor of a counter diffusion of S i 4 + in the opposite direction.
8% S 0 3 . Particles of residual phonolite show the crystallization of leucite and nosean, surrounded by "nests" of gas bubbles amidst a glass of a relatively high viscosity and surface tension. In small-scale experiments additions of NaOH or NaSH to the fining glass may be recommended to accelerate the breakdown of sulfate in the foam formation. 84. Concerning the diffusion of He and Ne through silica glass (cf. f 209), we emphasize the very distinct influences of thermal history of the glass wall material of the bubbles, on the rate of diffusion as observed, not for He, but so much more for Ne which was observed recently by K.
Observation of the mixing process and the behavior of the two-liquid phases in droplets under the heating microscope is particularly instructive. 56. An extensive calculation of the activities for N a 2 0 in molten Na 2So 4 and Na silicate melts was presented by St. Holmquist. 38 χ ΙΟ4/ Γ, tabulated and plotted for the temperature range from 800° to 1450°C. Also for the activity for N a 2 0 in Na silicate melts in equilibrium with Na 2So 4 and in S 0 2 + 0 2 atmosphere at 1200°C see Fig. 12 which gives a plot of the results of Holmquist, in comparison with those of M.