铁水预处理喷枪用耐火浇注料的研制与应用  

Preparation and application of refractory castables for lance in hot metal pretreatment

作　　者：欧阳德刚[1] 胡清明 王清方[1] 任迅[1] 

机构地区：[1]武钢研究院工艺研究所热能研究室,武汉430080 [2]武汉红地节能材料有限公司

出　　处：《耐火材料》2008年第2期142-145,共4页Refractories

摘　　要：选择焦宝石、普通电熔莫来石、红柱石为主要原料，Al-80水泥和α-Al2O3微粉、SiO2微粉为复合结合剂，耐热钢纤维为增强材料，≤0．088mm的锂辉石为烧结矿化剂，骨料由20～8mm、8～5mm、5～3mm、3～1mm、≤1mm五个级配组成。按照浇注料的设计配方进行了浇注料的配制，加水搅拌后制成40mm×40mm×160mm的试样，并进行110℃24h、1100℃3h和1450℃3h热处理，然后对浇注料的主要化学组成和3个温度热处理后试样的体积密度与耐压强度进行了检测，同时对1100℃3h和1450℃3h热处理试样进行岩相结构分析．结果表明：研制的浇注料结合强度适中，微观结构合理，达到了改善浇注料使用温度条件下烧结状况与抗热震性的预期效果。实际生产中的推广应用表明，喷枪的使用寿命延长1～4倍。The castables were formulated according to the design formula with Jiao Bao Shi,common fused mullite, andalusite as main starting materials, Al-80 cement, α-Al2O3 micropowder and SiO2 fume as composite binder,heat-resistant steel fiber as reinforcing material, ≤0.088 mm lithium pyroxene as sintering mineral- izer. The aggregate sizes are 20-8 mm,8 -5 mm,5 -3 mm,3 -1 mm and 〈1 mm. The specimens with the size of 40 mm ×40 mm×160 mm were prepared by adding water into the formulated castables, mixing, heat treating at 110℃ for 24 h, 1 100 ℃ for 3 h and 1 450 ℃ for 3 h respectively. The main chemical compo- sition of castables, bulk density and crushing strength of the fired specimens were determined. The micro- structure of the specimens fired at 1 100 ℃ for 3 h and 1 450 ℃ for 3 h was analyzed. The results show that the castables have appropriate bonding strength, reasonable microstructure,and obtain the expectant pur- pose for improving sintering at lance working temperature and thermal shock resistance. The service life of lance is prolonged 1-4 times in practical application.

关 键 词：浇注料 喷枪 铁水预处理 寿命 粒度 

分 类 号：TQ175.732[化学工程—硅酸盐工业] TF549.9[冶金工程—钢铁冶金]