All the disadvantages of a conventional, traditionally prepared batch containing cullet are the reason for the constant improvement of the technologies for its preparation. It is shown that the process of batch briquetting depends on the content of cullet and especially on the size of its particles. Tab. 5, ill. 2, bibliography: 9 titles.
The analysis of literature and patent data in the field of glass compositions for optical fiberglass, technology of its production and basic requirements for these glasses is carried out. It is proposed to synthesize glasses for a light-guiding core in the BaO - B 2 O 3 - La 2 O 3 - SiO system 2 using modern methods of optical fiber glass production. Bibliography: 14 titles.
The structures of titanium-containing aluminosilicate decorative glasses have been investigated by means of electron microscopy of various resolutions, electron microanalysis and X-ray diffraction. It was found that the reason for the formation of a patterned color is a stable and metastable liquation of melts and glasses, which leads to the formation of macrolayers and microphases of various compositions. The influence of the chemical composition of glasses on the processes of liquation in the studied system is shown. Tab. 1, ill. 2, bibliography: 4 titles.
The process of improving the main technical characteristics of a glass-melting furnace is considered: productivity, specific removal of molten glass and specific heat consumption for glass-making. Their interrelation and interdependence is shown. Using the heat balance method, the dependence of the specific heat consumption on a number of parameters of the thermal operation of the furnace has been investigated. It is recommended to use the heat balance method at the initial stage of designing glass melting furnaces. Tab. 3, ill. 6, bibliography: 31 titles.
A review of works on the study of the properties and characteristics of glasses, which determine the operational reliability of the most common glasses and glassware, is presented. The theoretical provisions, general issues of strength, chemical resistance (corrosion) and spectral characteristics of glasses are noted. The specified properties and characteristics are considered in relation to sheet glass, glass fiber and glass containers. Tab. 3, ill. 5, bibliography: 24 titles.
It was found that during low-temperature processing ( g ) of multicomponent glass with additions of phosphorus oxide in the glass powder, crystallization proceeds, accompanied by the release of calcium silicophosphate, which was not previously described in the literature. The resulting compound has a cubic system, space group P P 3 unit cell parameter a = 7.98 & Aring ;. Tab. 3, bibliography: 5 titles.
The state of development in the field of nanotechnology is briefly reviewed. It is noted that a fairly significant number of known glass materials contain nanostructures and, in essence, are nanomaterials (nanocomposites). A classification of nanostructures observed in glasses is presented. The structure at the nanoscale of some known glass materials is described, for which their properties due to the presence of the nanophase are given. Some glass-based nanocomposites obtained today are identified, and some problems of the directed synthesis of nanocomposites with a glassy matrix are highlighted. Tab. 2, ill. 5, bibliography: 35 titles.
The mechanism of thermal dissociation of the carbon foaming agent is revealed and the parameters of the process of foam glass formation are calculated. The promising directions for improving the foaming process have been determined. Il. 1, bibliography: 5 titles.
A technique for the numerical simulation of external heat transfer in a gas-electric glass-making furnace is considered. The influence of the power of additional electric heating (ADH) of molten glass on the characteristics of the thermal operation of the furnace is shown.
Examples of calculating the parameters of heat transfer depending on the productivity of the furnace and the power of the EAF are given. Tab. 5, ill. 3, bibliography: 6 titles.
The process of clarification of alkali-free glass type E (production of glass beads and continuous glass fibers) with sodium sulfate in comparison with antimony anhydride and cerium dioxide has been investigated. The high efficiency of sulfate clarification is shown and the technological parameters of its use are determined. Tab. 1, ill. 2, bibliography: 7 titles.
