Optimum flame gunning processes and effective gunning mass for hot repair of non-ferrous metallurgy units

Abstract

The process of torch gunning and applied gunning mass in ferrous metallurgy is investigated. The increase in the durability of the lining of non-ferrous metallurgy heat units was investigated by means of lining repair without stopping the units using the torch gunning method. A special gunning mass has been developed taking into account the specific service conditions of the lining of these units. It has been established that in order to lower the temperature, it is necessary to introduce a low-melting component or thermite mixture into the gunning mass, which operates according to the principle of self-propagating high-temperature synthesis (CBC). The design of the gunning unit was created taking into account the properties of the gunning mass. Tests of new gunships, gunning masses at the non-ferrous metallurgy plants showed an increase in the resistance of linings by 1.8-2.5 times. Ill. 4. Ref. 7. Tab. 2.