共查询到19条相似文献,搜索用时 828 毫秒
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介绍了攀钢高炉所用ZG30与ZG30V渣罐的材质特点,分析了ZG30V渣罐近期使用寿命低及其罐体开裂严重的主要原因,提出了提高渣罐使用寿命应采取的措施。 相似文献
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采用在高温状态下具有良好退让性的型砂--赤泥自硬砂作铸造渣罐时的芯砂,减少型芯砂对铸钢凝固过程中产生收缩的阻碍,以及采用渣罐水爆清理后余热退火等工艺,大大降低了铸钢渣罐裂纹的生产,提高了渣罐的使用寿命。 相似文献
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活动式水冷撇渣器于1998年元月在柳钢3号高炉首次应用,两年来,通过对用料质量的改进以及改进撇渣器冷却强度不均和局部冷却强度设计偏小的问题,收到了良好的效果,目前使用寿命达到一年以上,鬃铁量大于30万吨。 相似文献
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应用三维CAD软件Solid Edge对8m3渣罐罐体和倾翻过程中的液态钢渣进行建模,分别得出不同状态下的质量和质心坐标等数据,利用该数据计算渣罐的倾翻力矩。该方法直观实用,为渣罐的倾翻力矩计算提供了另一种途径。 相似文献
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铁流冲刷、炉渣的化学浸蚀、大闸厚度都会影响撇渣器的使用寿命。为延长撇渣器的使用寿命,对其结构进行改进,加大前沟槽和大闸、将小井和过道截面扩大,增加撇渣器容积,使其过铁量增加1倍以上,使用寿命延长为57-84d。 相似文献
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本次实验以烧结镁砂为主原料,加入铬绿微粉,从而制备出多种配方的镁铬质浇注料.通过对镁铬质浇注料和高铝质浇注料的性能检测,选取各自性能最佳的配方并制备出两个渣罐,然后进行抗渣性对比实验,对两种材质的耐火材料的抗渣侵蚀性进行研究.通过研究,探究出一种优质高效的耐火材料以提高镍铁合金炉炉衬的使用寿命. 相似文献
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文章应用三维CAD软件对渣罐进行建模,计算了其在倾翻过程中的重心位置变化情况,分析了渣罐倾翻后不回位的原因。本文所得到的分析结果,为合理设计渣罐提供重要依据。 相似文献
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A slag layer is formed when slag is splashed onto refractory lining in BOF slag splashing process. The melting temperature of the slag layer and the adhesion of the slag layer to the lining refractory have an important effect on slag splashing and BOF lining life. This study investigates the adhesive behaviour of slag with different composition to lining refractories. It is shown that the slag can adhere to MgO particles in MgO‐C bricks well and no reaction is found between the MgO particles and the slag layer, but a gas gap exists at the interface between the slag layer and the MgO‐C matrix and there are iron granules within the slag layer, when the FeO content in the slag is high. The adhesion of the slag layer to the lining refractory can be improved with decreasing FeO content in the slag and lower carbon content in the MgO‐C bricks. BOF refractory lining life can be greatly increased due to better adhesion, high melting temperature, and stronger wear‐resistance of the slag layer. 相似文献
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R. R. Kaur D. R. Swinbourne M. W. Wadsley C. Nexhip 《Metallurgical and Materials Transactions B》2011,42(3):451-459
The cost of maintaining and eventually replacing refractories as a result of slag attack is a significant cost component in
the copper industry. Converting matte to blister copper takes place in reactors lined with direct-bonded magnesia-chrome refractories,
and several continuous converting operations use calcium ferrite slag. Unfortunately, the low viscosity of calcium ferrite
slag makes it aggressive toward the refractories. Ferrous calcium silicate (FCS) slag has been proposed as a replacement;
however, the effect of this slag on magnesia-chrome refractories has not been studied. In this work, the interactions between
FCS slag and magnesia-chrome refractory at 1573 K (1300 °C) with an oxygen partial pressure of 10−6 atm were studied and compared with that experienced with calcium ferrite slag under the same conditions. Both slags penetrated
the pores in the refractory and caused compositional change in the chromite spinel intergranular bonding phase through cation
interdiffusion, which resulted in cracking and debonding of periclase grains. It was observed that the refractory was penetrated
much more deeply by calcium ferrite slag than FCS slag because of the higher surface tension and lower viscosity of calcium
ferrite slag. As a result, the refractory was attacked less by FCS slag than it was by calcium ferrite slag. It is concluded
that the use of FCS slag in continuous copper converting is likely to extend refractory life. 相似文献
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以国内外钛渣电炉生产实践为例,提出影响钛渣电炉炉体寿命的因素。从技术和经济的角度上,提出延长其使用寿命、降低造价成本的措施,并在某厂新建6300kVA钛渣电炉上实施,取得良好的生产效果。 相似文献