Novotroitsk branch of NUST MISIS, Novotroitsk, Russia

V. V. Grachev, Student, Dept. of Metallurgical Technologies and Equipment, e-mail: nfmisis@yandex.ru
I. V. Kotov, Assistant, Dept. of Mathematics and Natural Science, e-mail: ivk92@yandex.ru
A. V. Nefedov, Cand. Ped., Associate Prof., Deputy Director of the Branch for UMR, Head of the Dept. of Metallurgical Technologies and Equipment, e-mail: cosnovotr@rambler.ru

NUST MISIS, Moscow, Russia
N. A. Chichenev, Dr. Eng., Prof., Dept. of Engineering of Technological Equipment, e-mail: chich38@mail.ru

As a result of the analysis of the operability of the autoclave for the preparation of liquid glass necessary for lining cast iron buckets of the blast furnace shop, it was found that during long-term operation, failures of individual devices occur, which lead to unplanned downtime of equipment for cooking liquid glass, and as a result, to disruption of the bucket lining schedule and delay in the supply of cast iron for the needs of the electric steelmaking shop. It has been established that during operation of the autoclave hopper gate drive, in which an electric single-turn mechanism is used to open and close it, its frequent failure is observed, which leads to increased maintenance and repair costs, as well as to a decrease in the productivity of the technological process. It is proposed to replace the old electromechanical actuator with a pneumatic actuator, which will have higher performance indicators and ensure efficient operation of the unit during production processes. Calculations show that the implementation of design solutions leads to a decrease in the cost of production by 0.01 %, an increase in the profitability of production by 0.09 % and an increase in profit from sales by 0.07 %. Additional capital expenditures do not exceed 400 thousand rubles and pay off in less than 4 months.

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13. Nefedov A. V., Svichkar V. V., Chicheneva O. N. Re-engineering of equipment to feed the melting furnace with aluminum charge. Lecture Notes in Mechanical Engineering. 2021. pp. 1198–1204.
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