发明名称 |
VERFAHREN ZUM HERSTELLEN EINER EISENSCHMELZE |
摘要 |
<p>In smelting iron ore, the washed sludge has the water extracted to a residual moisture level before further processing. Coal dust is added to the sludge, together with quicklime (30) as a bonding agent. The sludge is granulated to be returned to the smelting gassing zone (15) to increase the base level of the slag (17) to a max. 1.25 and pref. max. 1.20. Before further processing, the sludge water content is reduced to 25-50% and pref. 35-40%. After water extraction, coal dust is added at a rate of up to 30%, and pref. up to 25%. Before the granules are fed to the smelting gassing zone (15), they are given a carbonate coating through an exhaust gas with a CO2 content. The carbonate granule coating is applied in a coal drying assembly (32). <IMAGE></p> |
申请公布号 |
AT400725(B) |
申请公布日期 |
1996.03.25 |
申请号 |
AT19940000739 |
申请日期 |
1994.04.11 |
申请人 |
VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH;DEUTSCHE VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH |
发明人 |
GRUENBACHER HERBERT;KEPPLINGER LEOPOLD WERNER DIPL.ING. DR;REUFER FRANZ DR. ING.;SCHREY GUENTER DIPL.ING. DR. |
分类号 |
C04B5/06;C21B3/02;C21B13/00;C21B13/02;C21B13/14;C21B15/02;C22B1/24;C22B7/02;(IPC1-7):C21B13/00 |
主分类号 |
C04B5/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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