共查询到19条相似文献,搜索用时 140 毫秒
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采用相对易磨性的方法比较了水淬高炉渣、滚筒转炉渣和风碎转炉渣的粉磨能耗。采用粒度分布和分形方法研究了炉渣微粉的特性。研究结果表明:水淬高炉渣易磨性最好,而滚筒转炉渣易磨性最差。水淬高炉渣微粉整体粒径分布均匀,不同粒度范围内微粉特性差异较小。而转炉渣中存在明显的难磨相,不同粒度范围内的分形分维数有明显差异。当炉渣微粉磨至很细时,单位质量滚筒转炉渣和风碎转炉渣的能耗分别约是水淬高炉渣的3.19和2.17倍。转炉渣中存在的FeO和金属铁导致其相对水淬高炉渣更难磨。滚筒转炉渣中的大量MgO·2FeO相导致其比风碎转炉渣更难磨。 相似文献
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钢渣是钢铁工业的主要固体废物,目前我国有效综合处理率仅为30%,大量的钢渣堆积造成资源浪费、环境污染。宁钢在转炉钢渣滚筒法处理、渣钢磁选提取、尾渣生产钢渣微粉等工作中积极创新与实践,率先实现钢渣低成本高效率零排放,钢渣100%循环利用,社会效益和经济效益显著。 相似文献
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介绍了华菱湘钢冶金固体废物冶金渣、冶金尘泥等的资源化处理与综合利用方法.重点探讨了转炉钢渣采用红渣倾翻打水自淬预处理及机械加工处理生产渣钢工艺,和转炉钢渣用于水泥及烧结矿生产的研究.提出了冶金固体废物的资源化处理与综合回收利用的新思路. 相似文献
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介绍了马钢转炉钢渣风碎处理工艺的研发及实践情况。重点介绍了风碎渣的理化特性及其在返烧结循环利用、路面混凝土细集料、喷砂磨料、混凝土预制件、格栅等方面的应用情况,并对风碎渣利用作了展望。 相似文献
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《Baosteel Technical Research》2010,(Z1):138
In present,the wet-based pattern is mainly adopted to deal with the steel slag by steel plant at home and abroad,the wet-based technology has some defects;Wasting of water,pollution of the environment,and the slag has not been fully recycled.This paper presents a new method,which is aimed to realize dry granulation,waste heat recovery and comprehensive utilizing the steel slag.According to the ideas of wind quenching granulation,the heating slag from the converter furnace,was bring to the granulation heat exchange system,through the process of breaking in a container,the granulation heat exchange system has the functions of feeding continuously and heat exchange.The heat air,through the diversion tubes,could be recycled in removing the dust.The granulation slag could be bring to a confined roller,granulating and cooling secondarily.The roller export was connected to a magnetic separator.The separated iron could be recycled,and the remaining slag could also be reused as building materials,in process of stabilization and secondary magnetic separation.The heated air could be guided into the boiler to generate the steam,which can be used to generate electricity,or use as cleaned energy,realizing the target to recycle the waste heat in steel slag.The highlights of the new method are dry granulation and waste heat recovery.This paper states the process of heat exchange between the air and the steel slag in the system of granulation heat exchange in the new technical process.In theory,it has been proved reasonable with the the system of granulation heat exchange,and also the work conditions has been optimized. 相似文献
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针对本公司3种水淬渣出渣方式存在的操作困难、生产成本高等缺点,经过设计、制作与试验,于2011年8月逐步试验推广水淬渣工艺,以取代叉车吊运渣包的工艺。实践证明,该工艺简单易行,工作效率高,劳动作业条件好,安全可靠,成本低。 相似文献
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