钢渣的回收利用钢渣的回收利用.doc

论文题目：钢渣的回收利用—生产建筑材料 系 别：化学工程系 专 业： 姓 名： 钢渣的回收利用—生产建筑材料 摘要：钢铁工业是国民经济的基础产业，在国家经济快速发展的形势下，钢铁工业也呈现出跳跃式发展的态势，钢产量近几年不断提高，钢渣作为炼钢工艺流程的衍生物随着钢产量的提高年产量不断递增。据必威体育精装版资料统计，2013年我国钢渣的产生量为7.82亿ｔ，钢渣利用率仅为10%左右，该数据显示钢渣利用率很低，距离钢铁企业固体废弃物“零”排放的目标尚远。因此，导致大量钢渣弃置堆积。堆积钢渣形成渣山，既污染环境又占用大量的土地。为了适应钢铁工业发展的需要，必须消除渣害。 钢渣、矿渣和粉煤灰被统称为三大工业废渣。但钢渣的利用率远低于矿渣和粉煤灰。通常钢渣用来做填料,或者用来烧制水泥,总体而言利用率不高。 钢渣中含有一定数量的水泥熟料的主要矿物C2S、C3S 等，具备可用作水泥混合材和混凝土掺合料的条件。 积极开发和应用先进有效的处理技术和资源化利用新技术，提高其利用率和附加值，是钢铁企业发展循环经济，实现可持续发展的重要课题之一。 Abstract ： Iron and steel industry?is the basic industry of national economy,?the rapid development in?the national?economy under the situation,?the steel industry?is also showing a?leaping development?trend,?steel production?improve constantly in recent years,?the steel slag as?process of?derivatives?along with the increase of?steel output?of the annual production?is .?According to the latest?statistics,?the amount of?slag?produced?in China in 2013?was 782000000 T,?steel slag utilization rate?is only about 10%,the data show that?steel slag utilization?rate is very low,?the distance of?the iron and steel enterprises?solid waste?zero?emissions target?is far.?Therefore,resulting in a large number of?steel slag?disposal of?accumulation.?The accumulation of?slag?forming?slag hill,?not only pollute the environment but up a lot of?land.?In order to?meet the needs of?the development of iron and steel industry,?must eliminate?slag?harm. Steel slag,?slag and fly ash?are collectively referred to as?the three waste residue.?But?the use of steel slag?rate?far below the?slag and fly ash.?Usually?steel slag?used to do the?packing,?or for?firing?cement,?rate is not high. The main?mineral C2S,?a certain amount of?steel slag?cement c?the?C3S,?available?as admixture of cement?and?admixture of concrete?conditions. A application of?advanced and effective?treatment technology and?resource utilization of?ne