COMPOSITION FOR PROTECTING LINING OF HEAT ASSEMBLY Russian patent published in 1997 - IPC

FIELD: nonferrous metallurgy. SUBSTANCE: composition contains 10-20 wt % boric anhydride or boric acid (calculated as boric anhydride), 40-60 wt % of carbon foam formed in aluminium electrolysis process, 5-15 wt % of flux used in smelting process of aluminium or its alloys, and low melting clay - the balance. Composition enables inserting intermediate plastic layer protecting heat-insulation lining layers in heat assembly against penetration and deleterious action of salt melts which preserves high value of lining resistance. When reflection electric furnace is subject of composition utilization, annual power consumption at one heat assembly is reduced by 219 kW.h. Preservation of lining integrity gives rise to extended life of heat assembly. Production waste utilization reduces cost of lining montage. EFFECT: increased reliability of heat assembly operation and reduced investment and operational cost. 1 tbl