VOL 81, No. 5 (2008)

An algorithm for controlling the differentiated loading of the charge into the glass-making furnace is considered depending on the category of the charged portions of the charge. Portions of the charge with an increased content of refractory components are loaded into the zone of the furnace with an increased temperature of the glass melt, and portions of the charge with an increased content of low-melting components are loaded into the zone of the furnace with a low temperature. Il. 2, bibliography: 3 titles.

The results of the development and 10-year experience of operation of automated multichannel systems for technological control of the thickness of float glass tape, which resulted in their serial production, have been summed up. Tab. 1, ill. 5, bibliography: 2 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.

JSC "Salavatsteklo" has developed and is implementing a stage-by-stage program of modernization of production processes in order to make the enterprise a leader in the glass industry in Russia. The fourth stage of the program has now been completed. Two lines for the production of polished sheet glass with a capacity of 600 tons / day (2005) and 500 tons / day (2007) have been brought to the European technical level. The reconstruction of the enterprise continues. Il. 4.

It was found that the use of a new MB1 organic bond with a 45/38 micron grinding powder instead of an M2-01 bond with a 30/40 micron micropowder made it possible to increase the productivity of the final diamond grinding of high-quality and art glass without subsequent chemical polishing by 2 - 2.5 times and reduce the roughness of the treated surface by 20% while increasing the specific consumption by 14 - 28%. Il. 2, bibliography: 2 titles.

The "Termix" enterprise produces electric furnaces of a new generation for bending and fusing glass, as well as for drying and firing ceramic products. During the entire period of heat treatment of products in the furnaces, the minimum permissible temperature difference is maintained. Il. 6

When the lining of large refractory products is brought to the operating mode, it is important to know the temperature rise of the material in order to determine the mounting clearances and to be sure that during service with an increase in the temperature gradient along the thickness of the product, destruction will not occur due to structural transformations. At the Semiluksk Refractory Plant, comparative studies of the thermophysical properties of traditional fired fireclay materials (rammed bar for the bottom of the melt bath, semi-dry pressing bar ShSU) and low-cement concrete materials on fireclay aggregate grade VShS were carried out. In the service temperature range of 600 - 1300 ° C, the materials VShBS and VShBO showed a smooth insignificant change in TCLE with increasing temperature. Tab. 1, ill. 3, bibliography: 2 titles.

At JSC "Borovichi Refractories Plant" a set of works was carried out to master the production of chamotte block products for the lower structure of glass-melting furnaces. The features of the technology of production of products and the technological line, modernization of technological equipment, and ensuring the quality of products are considered. The physicochemical properties of ShSU-33 and MLS-62 products and their advantages over similar products from other manufacturers are presented. Tab. 1, ill. 4, bibliography: 5 titles.