Abstract
The problems of the liquid-phase process of iron and steel production are considered. The international experience of steel production is presented. A continuous process of steel and iron ore production in smelting furnaces allowing to use 100% metallized charging feed has been developed. The process was tested in experimental - industrial ore-smelting furnace with the capacity of 1200 kVA on the pellets from Lebedinsky and Kachkanarsky deposits, which were metallized under Beloretsk Metallurgical Plant. The total amount of processed metallized pellets containing up to 15% waste material and 85-95% metallization is about 600 tons.
Keywords
Metalized pellets, direct production of steel and cast iron.
1. Moore J.J. An examination of the new direct smelting processes for iron and steelmaking. Journal of Metals. 1982, VI, pр. 39-48.
2. Zhak R. I., Pitatelev V.A. The production and use of metallic mate-rials in the blast furnace and electric furnace steelmaking. Survey by «InformSteel» system (Institute of «Black metallurgy information»). Moscow, 1986, 20 (264), рр. 27.
3. In Sweden have developed an economical method of producing pig iron. Metallurgy abstract journal. 1979, 9В252.
4. Construction of plants for the production of pig iron. Metallurgy ab-stract journal. 1979, 8В450.
5. Collin P., Shctikler G. New mode of production of pig iron. Ferrous metals. 1980, no. 5, pp. 20-23.
6. Elred – New process of iron production. Metallurgy abstract journal. 1979, no. 8, 813451.
7. Davis C., Mefarlin G., Pratt H. Direct reduction technology and economic. Ironmaking and steelmaking. 1982, no. 3, pp. 93-109.
8. Nakagawa R., Isimatsu S. Continuous reduction from the melt. Development of a continuous process of steel production from metal materials. Takkokai. 1975, vol. 25, no. 9, pp. 48-52.
9. Unit for the production of liquid metal from ores and concentrates. Copyright witnesses № 232990, 4.10.1968.
10. Ivantsov G.P., Smirnov V.N., Vasilivitsky A.V. and others. Method to produce liquid iron outside of the blast furnace. Research Institute «Heavy engineering», bulletin № 58. Moscow, 1968.
11. Tulin N.A., Kudryavtsev V.S., Verner D., Lessel V., Muller B. and others. Development of metallurgy without application of coke. Moscow: Metallurgy, 1987.
12. «Boliden Inred» process for smelting reduction of finely divided iron oxides and concentrates. Metallurgy abstract journal. 1980, no. 2, 2B163.
13. Elwander G., Omberg G. Production of pig iron in the way of Inred Iron. Ferrous Metals. 1984, no. 17, pp. 42-45.
14. Elwander H.I., Edenwall I.A., Hellstam C.I. Boliden Inred process for smelting reduction of fine-grainted iron oxides and concentrates. Ironmaking and Steelmaking. 1979, no. 5, pp. 235-244.
15. Kadarmetov A.H., Kaskin K.K., Uchaev A.N. Continuous process for production of semiproducts with using metallized pellets in the charge. Continuous metallurgical processes:ore, scrap, metal rolling: abstracts of All-Union Scientific and Technical Conference. Sverdlovsk, 1989.