REDUCTION OF SILICON IN HOT METAL BY IRON-ORE AND FLUX INJECTION THROUGH BLAST-FURNACE TUYERE

被引：4

作者：

TAKEDA, K ^{[1
]}

SAWA, Y ^{[1
]}

TAGUCHI, S ^{[1
]}

TAKASHIMA, N ^{[1
]}

MATSUMOTO, T ^{[1
]}

OBATA, H ^{[1
]}

机构：

[1] KAWASAKI STEEL CHEM IND CO LTD,CHIBA WORKS,CHIBA 260,JAPAN

来源：

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 1991年 / 77卷 / 10期

关键词：

BLAST FURNACE; IRON ORE; FLUX; POWDER; INJECTION; SILICON CONTENT; TUYERE; DE-SILICONIZATION; RACEWAY;

D O I：

10.2355/tetsutohagane1955.77.10_1625

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A Multi-Purpose Injection (MPI) System was installed at Chiba No. 5 blast furnace and a test operation on the injection of iron ores and fluxes was conducted twenty one days for the purpose of lowering silicon content in hot metal. The results obtained from the trial are summarized as follows: 1. Reduction of silicon content of 0.08% in hot metal was obtained by the mixed powder injection of iron ore and flux powder of 5.0 kg-CaO/t. It was suggested that the major factor inducing the silicon reduction was the absorption of SiO(g) by the injected powder. That was made on the basis of sampling examination by a sideways tuyere probe. 2. Significant reduction of silicon content was not observed during the iron ore powder injection up to 50.4 kg/t with constant coke rate. On the other hand, increases of (FeO) and [S] indicated that the oxygen potential in a hearth became higher by the iron ore powder injection.

引用

页码：1625 / 1632

页数：8

共 7 条

[1]

DELASSAT Y, 1988, 7TH PROC TECH C P TO, P203

[2]

ELLIOTT JF, 1955, T AM I MIN MET ENG, V203, P485

[3]

KUSHIMA K, 1988, 47 IR C P TOR CAN, P457

[4] THE REACTION OF SIO(G) WITH LIQUID SLAGS [J].

OZTURK, B ;

FRUEHAN, RJ .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1986, 17 (02) :397-399

[5]

SAINO M, 1986, IRON STEELMAKER, V13, P20

[6]

TAKEDA K, 1987, 46TH IR C P PITTSB, P191

[7]

TANAKA K, 1984, IRON STEELMAKER, V11, P28

← 1 →