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高爐用耐火材料選購時(shí)有技巧

發(fā)布日期：2018-06-14 作者：點(diǎn)擊：

　　高爐煉鐵主要用到的高爐用耐火材料有是不定型耐火材料、碳質(zhì)耐火材料、粘土磚、高鋁磚等.其中碳質(zhì)耐火材料包括石墨磚、半石墨磚、炭磚、Si3N4結合SiC磚.要知道高爐因其不同部位使用環(huán)境不同,對高爐用耐火材料的要求和選擇也不盡相同,具體選擇方式如下:

　　爐喉:主要使用優(yōu)質(zhì)的黏土磚和高鋁磚砌筑.

　　爐身:中部和上部溫度區域為 400°C~800℃.目前在這部位都是采用優(yōu)質(zhì)的黏土磚或高鋁磚砌筑而成.

　　高爐爐身下部:經(jīng)過(guò)對高爐的大量的調查研究其結果表明,其中約有 23%的高爐都是使用的 SiC 高爐用耐火材料.在我國研制出的Si3N4結合SiC磚對抗侵蝕性能有了顯著(zhù)的提高,并且已經(jīng)開(kāi)始應用于我國的各大高爐爐身的砌筑,對高爐的使用壽命有了顯著(zhù)的提高.

　　爐腰:正常工作時(shí)候的溫度為1400℃~1600℃,我國針對爐腰部位所受到的侵蝕以及沖刷嚴重的情況,研制出Si3N4結合 SiC 磚,經(jīng)過(guò)實(shí)踐證明這種磚的耐沖刷、耐侵蝕性好.

　　爐腹:下部爐料溫度約在 1600℃~1650℃,并形成大量的中間渣開(kāi)始滴落.在國內一般選用碳質(zhì)高爐用耐火材料制作的碳化硅磚.在國外這部位選用的高爐用耐火材料也比較多,荷蘭霍戈文鋼鐵公司3662m3高爐爐腹砌半石墨磚,效果較好.

　　爐缸:溫度一般是在 1450°C~1500°C之間.風(fēng)口區溫度能夠達到1700°C~2000°C.主要是采用炭磚砌筑.近年來(lái),國內很多高爐爐底爐缸采用法國 SAVOIE 公司和日本電極公司碳質(zhì)材料-陶瓷材料復合結構.

　　鐵口:在鐵口主要的裝置是鐵口套,它是由鑄鋼制成,并與爐殼焊接.目前在這個(gè)部位主要使用性能優(yōu)異的炭磚.

　　淄博力杰窯爐工程有限公司主營(yíng):高爐用耐火材料,熱風(fēng)爐用耐材,等一系列產(chǎn)品，公司是一家窯爐設計施工、耐材生產(chǎn)、電儀自控等一條龍服務(wù)的綜合性科技公司。

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