VOL 76, No. 5 (2003)

The issues of modernization and development of electric-weight trolleys for the preparation of glass batch and the production of multicomponent mixtures in the production of refractories and various types of ceramics are considered. Il. 2.

A new design of a load-gripping device-manipulator intended for fastening large windshields during bending is considered. The device allows you to grip both flat glass in a pack (glass + film + glass) before bending, and molded glass after bending and install it on a transport trolley. The kinematic and layout diagrams of the device are presented. Il. 3.

The relationships underlying the calculation of the optimal mode of glass annealing are considered. The method for calculating the optimal cooling mode is extended to the general case of glass heat treatment, including the stages of heating, holding and cooling. Il. 1, bibliography: 3 titles.

The experience of using in a continuous technological process of production of sheet light-heat-shielding, mass-colored float glass "light" and "heavy" soda produced by JSC "Soda" (Sterlitamak), as well as soda ash of the 2nd grade from nepheline raw materials produced by JSC "Achinsk Alumina Refinery". The advantages and disadvantages of alkaline raw materials are analyzed. The features of the processes of charge preparation and glass-making when working with the use of different types of soda have been studied. Tab. 2, ill. 2, bibliography: 9 titles.

It is shown that the density of two-component glasses with a change in their composition of the molar content of the modifier obeys a parabolic dependence, the values ??of the parameters of which can be used to judge the magnitude and nature of the interaction between the components. In glasses showing a tendency to liquation, the interaction indicators are more than an order of magnitude lower and negative. Tab. 2, ill. 2, bibliography: 6 titles.

A one-dimensional model is considered, which includes the equations of continuity, balance of forces and a physical model that describes the state of the glass melt in the fiber formation zone. Perturbations associated with changes in technological parameters are introduced into the solutions of the equations defining a stable process, and possible deviations of the fiber radius are determined. Il. 2, bibliography: 2 titles.

Porous ceramics based on wollastonite and zeolite rocks of Siberia with an apparent porosity of 30 - 40% and a pore size of 80 - 100 to 20 - 40 ?m have been developed, significantly superior in strength to ceramics of a similar purpose from traditional raw materials. Tab. 3, ill. 3, bibliography: 4 titles.

The structure of the Al ₂ O ₃ - SiO ₂ - MgO - P ₂ O _{5 in the subsolidus area. The partition of the system into elementary tetrahedrons is shown, their volumes and degrees of asymmetry are calculated, a topological graph of the relationship of tetrahedra is constructed, and a geometric-topological characteristic of the phases of the system under study is given. For some pseudo-binary and three-component sections, the temperatures of the eutectics, as well as their compositions and the lengths of the connections are calculated. Areas of system compositions suitable for the technology of heat-resistant ceramic and heat-insulating materials are given. Tab. 4, ill. 3, bibliography: 23 titles.}

The possibility of obtaining ceramic pigments based on the NiO - TiO ₂ system by hydroxide deposition from aqueous salt solutions has been investigated. The synthesized pigments have high chromophore characteristics and are stable up to 1200 ° C. Practical recommendations are given. Tab. 1, ill. 3, bibliography: 8 titles.

The experience of industrial operation of a permanent magnet separator based on Nd - Fe - B EMC design for dry magnetic re-enrichment of quartz sands at a glass plant is considered. The proposed magnetic separator, which has a number of advantages over electromagnetic separators of the EVS series, is advisable to use in the glass batch preparation shop to remove coarse quartz sand and other charge materials, both iron-containing natural mineral components and iron-containing particles introduced during drying, storage and transportation.... Bibliography: 4 titles.

The analysis of the reforming of the management system of the largest Russian manufacturer of glass products Salavatsteklo OJSC, which in four years has passed the way from a pre-bankrupt state to the leader of the glass industry in the Russian Federation. Il. 5.