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| THE REDUCIBILITY OF SELF-FLUXING SINTERS AND SELF-FLUXING PELLETS IN RELATION TO COKE RATES |
| CHEN TA-SHOU;CHAO MENG-CHIEN Peking Institute of Ferrous Metallurgy |
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Cite this article:
CHEN TA-SHOU;CHAO MENG-CHIEN Peking Institute of Ferrous Metallurgy. THE REDUCIBILITY OF SELF-FLUXING SINTERS AND SELF-FLUXING PELLETS IN RELATION TO COKE RATES. Acta Metall Sin, 1965, 8(3): 281-293.
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Abstract The present investigation compares the reducibility of self-fluxing sinters with theself-fluxing pellets made from iron ore concentrates at the same company. Laboratoryreduction tests were made with gases having compositions similar to blowing with blastswith or without injection of coke oven gas. The actual data of smelting of the self-fluxing sinters in a blast furnace are used to make necessary corrections for the resultsobtained from the laboratory tests, in order to estimate the possible coke rate of smeltingself-fluxing pellets without injection of coke oven gas in the same furnace. Estimation ofcoke rate is made by solution of two simultaneous equations, one for the coke requiredfor direct reduction of Fe_xO, MnO, P_2O_5 and SiO_2, heat supply and carburization, andthe other for that required for indirect reduction of Fe_xO multiplied by (1+ΔC％), plusthat required for carburization, where ΔC％ is the percentage ratio of the actual cokerate above the theoretical value to that required for indirect reduction of Fe_xO. Esti-mations are made for lowering ΔC in order to decrease the existing coke rate of smeltingof the self-fluxing sinters. The ΔC is considered to be a better measure for the efficiency of blase furnace opera-tion, in comparison with CO/CO_2 and coke rate.
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Received: 18 March 1965
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[1] Paschal, F., Himber, F.: Journees Internationales de Siderurgie, (Luxembourg, 1--4 Oct., 1962) , p. 569．
[2] Chiyoji, S.: Blast Furnace Steel Plant, 1962, (2) , 136． 堺千代次: 铁钢, 1961, 47, 234．
[3] Лазарев, Б. Л., Китаев, Б. И., Ярошенко, Ю. Г.: 54--65．
[4] 赵孟坚:自熔性球团矿及烧结矿还原试验的报告,(北京钢铁学院炼铁教研组,1963) .
[5] Edstrom, I. O.: J. Iron Steel Inst. (London), 1953, 175, 289．
[6] Есин, О. А., Гельд, П. В.: 1, 607--613．
[7] Schurmann, E., Bulter, D.: Journees Internationales de Siderurgie, (Luxembourg, 1--4 Oct., 1962) , p. 89． |
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