Abstract
Blast furnace (BF) gas dry type bag filter desusting technology is an important technical innovation for energy saving, emission reducing and clean production for contemporary BF. It can reduce significantly the fresh water consumption during iron making process and reduce environmental pollution. It has become the development direction of contemporary BF iron making technology. The technical advantages and principle of BF gas dry bag filter dedusting are described in this paper, and the research and application on dry type bag filter dedusting technology of BF gas for 5500m3 BF at Shougang Jingtang (SGJT) are applied. The full dry type bag filter cleaning technology of gas self-developed has been applied successfully in 5500m3 BF, and standby wet type gas dedusting system has been cancelled. Several key technologies have been developed including gas temperature control, anti-corrosion of pipe, measuring of dust content in gas, dense phase pneumatic transportation of collected dust etc. The full dry type dedusting technology has reached internationally advanced level.
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