九鋼4號高爐熱風爐快速涼爐及烘爐實踐

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摘 要：因九鋼4號高爐3座頂燃式熱風爐熱風出口及支管經(jīng)常出現(xiàn)發(fā)紅跑風的現(xiàn)象，故利用這次大修機會，對其進行涼爐檢修。通過制定合理的硅磚熱風爐涼爐方案，采用助燃空氣從下部經(jīng)冷風管道通風冷卻的方式，按照計劃涼爐曲線降溫實現(xiàn)了安全順利的涼爐。對此次涼爐總結操作經(jīng)驗，為今后硅磚熱風爐涼爐及烘爐提供重要參考。

關鍵詞：熱風爐；涼爐；烘爐；硅磚

PRACTICE OF QUICK COOLING AND DRYING OF HOT AIR STOVE IN NO. 4 BLAST FURNACE OF JIUGANGL

Li Ming    Zeng Jun

（Jiujiang Pinggang Steel Co.， Ltd.    Jiujiang    332500，China）

Abstract：Since the hot air outlets and branch pipes of the three top combustion hot blast furnaces of No. 4 blast furnace in Jiujiang Iron and Steel Works often appear red and blow， the overhaul opportunity was used to conduct cooling furnace maintenance. By formulating a reasonable cooling scheme for silica brick hot blast furnace， adopting the way of ventilation and cooling of combustion supporting air from the lower part through the cold air duct， the safe and smooth cooling of the furnace is achieved according to the planned cooling curve. This paper summarizes the operation experience of this cooling furnace， and provides important reference for cooling and drying of silica brick hot blast furnace in the future.

Key words： hot blast stove；cold stove；baking；silica brick

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九鋼4號1 780 m3高爐一代爐齡于2009年10月投產(chǎn)，配比3座頂燃旋切卡魯金式熱風爐，采用煤氣及助燃空氣雙預熱模式，設計風溫1 200 ℃。（剩余5448字）