Study of aluminosilicate refractories after operation in the presence of fluorine-containing wastes

Samples of aluminosilicate refractory after operation in the shaft and hearth a coke-gas cupola were investigated; this was used for smelting cast iron with spheroidal graphite using carbon wastes from aluminium electrolysis production as reducing agent. Use only fluorine-containing solid fuel allows to utilize hazardous man-caused wastes, improves economic performance has influence on resistance fireclay refractories. It established that products acquire distinct zone features during service, due penetration components gas liquid phases effect low-boiling carbon-containing wastes. Upon that, changes structure along distance working space are complex ones lining thickness concentration volatile “cold” parts lining. Permanent character mullite content different zones can be traced, well slight increase less altered zone, despite service conditions. Absence alkaline fluoride pores established, migration these gaseous into their subsequent removal furnace gases. Additional development certain revealed, resulting by its synthesis alumina did not react refractories manufacture under mineralizing action fluorine compound. carbonaceous makes it possible conditions cupola.