高炉炉缸炭砖砌筑结构的传热学

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Abstract The mathematical models of blast furnace (BF) hearth were established and the masonry structures of large carbon blocks and small carbon bricks for hearth were discussed from the view of heat transfer．The temperature of these two hearth structures during BF drying process were calculated as well as after blow-in．It is found that the filling between staves and carbon bricks can not be dried effectively at present BF drying conditions and the thermal conductivity of filling can not reach the designed value．Moreover，with the existing of filling，the hot face temperature of lining is higher which results in more serious erosion．Therefore，the filling should be cancelled between staves and carbon bricks．It has obvious advantage of heat transfer for carbon bricks touching with staves directly．The hearth structure of small carbon bricks could be designed to touch with staves directly so that it exterminates the barriers on heat transfer of hearth．The hearth structure of large carbon blocks should be put some small carbon bricks touch with staves directly and then make the filling between the small carbon bricks and large carbon blocks．The filling moves towards center of BF more than about 200mm．In order to dry filling completely during BF drying process，the necessary method is without utilizing cooling water．Meanwhile，some measures are discussed for keep staves safe．

Received: 27 June 2013 Published: 07 May 2014

PACS:

TF573.1

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	LI Xiang-Long
	CHENG Su-Sen

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LI Xiang-Long,CHENG Su-Sen. Heat Transfer on Masonry Structure of Hearth Carbon Bricks[J]. Iron and Steel, 2014, 49(5): 13-18.

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http://www.chinamet.cn/Jweb_gt/EN/ OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I5/13

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