《含砷铁矿石烧结脱砷中含砷气体的固结研究》由会员分享，可在线阅读，更多相关《含砷铁矿石烧结脱砷中含砷气体的固结研究（27页珍藏版）》请在金锄头文库上搜索。
1、 本科毕业论文题题目目含砷铁矿石烧结脱砷中含砷气体的固结研究学学 院院:材料与冶金学院专专 业业:冶金工程学学 号号:201102126006学生姓名学生姓名: 指导教师指导教师: 日日 期期:二一五年六月武汉科技大学本科毕业论文武汉科技大学本科毕业论文摘 要我国藏有大量含砷铁矿石，含砷铁矿石在烧结工序中，多数砷以气态物质被脱除进入大气中，严重污染了环境。研究钢铁冶炼中烟气里砷的去除是解决砷污染有效的方法，也是阻止砷进入环境最有效的途径。本实验用 FactSage 软件进行烧结脱砷固砷及热力学模拟计算，得到相关的热力学数据，包括产物的量、存在状态、种类等。利用 origin 软件对得到的实验数
2、据进行处理，得到关于碳含量、温度、氧气压的图像，对得到的这些图像进行分析，并利用烧结杯烧结脱砷固砷，得到关于脱砷固结的相关结论如下：（1）在氧化钙固结含砷铁矿石里的含砷气体时，固结产物有砷酸钙；（2）影响烧结气态产物脱砷的因素有烧结过程中碳含量、氧化钙含量、烧结温度、抽风负压以及氧气的给予量。 氧化钙可以促进固结作用的发生；模拟发现抽风负压对固结的影响并不大，但抽风负压可能破坏含砷烟气固结反应的动力学，试验发现可以抑制砷固结；当氧含量在 500g2500g 时，在氧含量比较低的时候，温度对固结的影响很小，在氧含量高的时候影响较大，会抑制固结作用的发生；氧含量可以促进含砷气体的固结；适当碳含量可
3、以促进固结作用的发生。关键词：热力学；烧结脱砷；固结研究；氧化钙除砷 武汉科技大学本科毕业论文武汉科技大学本科毕业论文IAbstractChinas possession of large amounts of arsenic bearing iron ore containing arsenic and iron ore in the sintering process, the majority of arsenic in gaseous substances are removed into the atmosphere, the serious pollution of the env
4、ironment. Arsenic removal from flue gas in iron and steel smelting is the most effective way to resolve the arsenic pollution and to prevent arsenic from entering the environment.In this experiment, the FactSage software was used to simulate the arsenic arsenic and the thermodynamic simulation, and
5、the relevant thermodynamic data were obtained, including the amount of the product, the state of existence, the species, etc. The Origin software to process the data obtained by the experiments to get images of carbon content, temperature, oxygen pressure, to get the image analysis, and the use of s
6、intering cup arsenic removal, get on the removal of arsenic consolidation of the relevant conclusions are as follows:(1) gas containing arsenic bearing iron ores in the calcium oxide consolidation, consolidation product of calcium arsenate;(2) affect the result of sintering gas removal of arsenic in
7、 sintering process of carbon content, calcium oxide content, sintering temperature, suction pressure and oxygen given. Calcium oxide can promote the consolidation effect; simulation, it is found that the suction pressure of consolidation does not have a significant impact, but the suction pressure m
8、ay damage with the kinetics of the reaction of arsenic consolidation of flue gas. The results showed that the arsenic consolidation can be suppressed. When the oxygen content in the 500g2500g. When the oxygen content is low, the influence of temperature on the consolidation is very small, in the hig
9、h oxygen content affect larger, will inhibit the consolidation effect; oxygen content can promote containing arsenic gas consolidation; proper carbon content can promote the consolidation effect.Keywords: Thermodynamics; Sintering arsenic removal; Consolidation study; Arsenic removal from calcium ox
10、ide武汉科技大学本科毕业论文武汉科技大学本科毕业论文II目录1 文献综述.11.1 砷的简介.11.1.1 砷的基本性质.11.1.2 烟气里的砷化物.11.2 砷污染.21.2.1 砷污染的来源.21.2.2 砷污染的危害.21.3 除砷途径.31.3.1 干法收砷工艺.31.3.2 吸附除砷.41.3.3 氧化钙除砷12.51.3.4 其它脱砷处理法.61.4 砷研究及其研究的重要性.61.4.1 砷研究的必要性.61.4.2 砷的固结研究.72 烧结脱砷固砷热力学.82.1 热力学理论计算原理.82.2 计算结果与讨论.82.2.1 CaO 质量和抽风负压对烧结含砷气体固结的影响 .82.2.2 碳含量和温度对烧结脱砷含砷产物固结的影响.
