DonNTU master Tischenko Il'ya

Tischenko Il'ya

Physical-Metallurgical Faculty
Speciality: Metallurgy of ferrous metals

Theme of qualifying work of master's degree:
"Investigation of the electro-thermal recovery of iron materials in the furnace bottom electrode"
Scientific adviser:
dr.Trojanskiy Alexander.

Review

"Investigation of the electro-thermal recovery of iron materials in the furnace bottom electrode"

There are considerable accumulations of zhelezosoderzhaschikh technogenic wastes On metallurgical enterprises: dross, different shlamy, slags et cetera and their amount increases in course of time. In the conditions of growings prices on the basic types of shikhtovykh materials, in-use in a steel-smelting production: scrap-metal, cast-iron, metallizovannoe raw material, the actual is become by the task of utilization of zhelezosoderzhaschikh wastes.

An actual task is development of electro-thermal process of renewal of zhelezosoderzhaschikh wastes with the use of low-grade coals or wastes of coke production. Developed and made laboratory setting a capacity 100 kg (picture).

Setup electrothermal recovery.
Picture — Setup electrothermal recovery.

Results

Experimental fusion, during which over 110minut of 120 kg of raw material was obtained 42 kg of metal. Technological parameters of the experimental fusion were as follows: voltage 60-70V, current 500-700A, power consumption 1.5 kWh/ Kg, oxygen consumption and natural gas, respectively, 0.052 and 0.023 m3/kg product.

Conclusions

Testing has shown the fundamental performance technology. The yield was 54% for metal. Chromium in the metal, apparently, was electrochemically recovered from refractory materials.

Literature:

  1. Малиновский В.С. Сравнение характеристик дуговых печей постоянного тока нового поколения и индукционных печей / В.С. Малиновский, В.Д. Малиновский, Л.В. Ярных, А.В. Афонаскин//Литейщик России — 2002, №1. — С.24-27.
  2. Innovation in Electric Arc Furnaces/ Y. Toulouevski, I. Zinurov. Springer-Verlag Berlin Heidelberg, 2010, — 258p.
  3. Pavlicevic M. DC-EAF: The Anodes Cooling System / M. Pavlicevic, B. Matijasevic, A. Della Negra, G. Gensini // Danieli news. — 1995. — №1. — Р.18-29.
  4. A. Janiak, G. Davene. Scrap-melting process and electric furnace for carrying out the process. Patent US 4821284
  5. Liu X. Melting mechanism of water-cooled billet-type bottom electrode of direct current arc furnace: a numerical approach / X.Liu, J.Zhou, H.Shi et al// Metallurgical and materials transactions B. — October 2008. — №39B. — Р.713-724.
  6. G. Gensini, M. Pavlicevic. Cooled bottom electrode for a direct current electric furnace. Patent US 5651024.
  7. H. Berger, P. Mittag, J. Steins. Bottom electrode for a metallurgical vessel. Patent US 5529598.
  8. Электровихревые течения / В.В. Бояревич, Я.Ж. Фрейберг, Е.И. Шилова, Э.В. Щербинин — Рига: Зинатне, 1985. — 315с.

Notes

Outlined an agenda for further research that would aim at achieving a stable process indicators, increasing the output of suitable and power optimization.