Development of the design of a flare shotcrete installation depending on the composition of the shotcrete mass and the thickness of the applied layer

Abstract

The design of a flare gunning unit for hot repair of the lining of thermal units has been developed. The unit with a capacity of 1800-2000 kg/h has successfully passed tests for melting slag and skull from the surface of the repaired lining and applying shotcrete masses to the lining of the tuyere belt of horizontal converters, the slag belt of power furnaces of metallurgical enterprises. Compositions of SHS-materials for the production of masonry mortar, shotcrete mass for torch shotcrete and technologies for their manufacture and application, as well as laboratory and semi-industrial shotcrete installations, have been developed. SHS-materials were tested in the lining of thermal units of Rezhnickel CJSC, Ufaleynickel OJSC and Ust-Kamenogorsk Metallurgical complex, showed high physical and chemical properties. Tests of new shotcrete installations and shotcrete masses at non-ferrous metallurgy enterprises showed an increase in lining durability by 1,8-2,5 times. Ill. 4. Ref. 6. Tab. 2.