Service of refractories in a glass-tank furnace producing glass fiber by the single-stage method

Abstract

Plans made for 1980 for the redesign and reequipment of production should be completed by each concern.The East-Siberian Refractories Factory is facing a major problem in bringing its new capacity to the projected levels. This will significantly reduce the movement of refractories from the central regions of the country to regions of Siberia and the Far East. The collective of this factory in 1980 needs to begin producing high-alumina goods and compounds and expand the output and increase the production of commercial chamotte.Critical problems must be solved in 1980 by scientific-research and planning institutes attached to the refractories industry: the planning of departments for the manufacture of dinas compounds using the wet method of preparing batch in order to improve working conditions and the quality of the goods; the development and introduction of a technology for fibrous refractories for service ~emperatures of 1400-1600~ organization of the production of plate corundum; increases in the number of uses of refractories in sliding gate valves for stopperless casting of steel to 3-4; increases in the resistance of monolithic linings of steel ladles by 25-30%; the creation of resistant refractories for powerful electric steel furnaces; caking and reduction units for ores; improvements in methods of guncreting metallurgical heating units; the development of high-grade projects for building sites in the Eleventh Five-Year Plan; ere.Of exceptional significance in connection with these tasks are the November 1979 decrees of the Central Committee of the CPSU, the statements and conclusions presented then by the Chairman of the Supreme Soviet, L. I. Brezhnev. Refractories producers, like all Soviet people, are trying to realize completely the resolutions of the Plenum and honorably fulfill the plans and responsibilities. The toilers of the enterprises and institutes of the refractories industry are widely developing socialist competitions for the early celebration of the ll0th anniversary of the birth of V. L Lenin and, by self-confirmed work for the joy and honor of his Socialist Motherland, ensure early completion of the plans for 1980, the final year of the Tenth FiveYear Plan. The high melting temperatures and chemical corrosiveness of aluminoborosilicate alkali-free glasses used for the production of glass fiber, the enhanced demands of constant chemical composition, and the properties in the product cause difficulty in selecting resistant refractory materials for glass-tank furnaces [1]. Abroad [2][3][4] and in the USSR [1,[5][6][7][8][9] new types of refractories have been developed on the basis of chromium oxide in the form of large blocks that are most resistant to aluminoborosilieate glass, and are recommended for building the tanks of glass furnaces used in the production of glass fiber and glass balls. This paper describes the results of the service and wear of chromium oxide refractories in a tank producing glass fiber at the Gusevsk Factory, in which, in September 1974, specialists from the USSR a...