1、 本科毕业论本科毕业论文文 *选煤厂浮选工艺研究选煤厂浮选工艺研究 STUDY ON COAL SLURRY FLOTATION PROCESS OF WANGFENGGANG COAL PREPARATION PLANT I *选煤厂浮选工艺的研究选煤厂浮选工艺的研究 摘要摘要 细粒煤的分选在煤炭工业中发挥着重要的作用,成为洁净煤术发展的 重点之一,是综合利用煤炭资源和环境保护的有效途径。浮选作为煤泥分 选的主要选煤技术,必需在理论和实践上进一步完善。 针对*选煤厂,通过粒度组成分析试验和分步释放试验分析其入浮煤 泥的性质,了解煤泥中不同粒度分布及灰分情况、可浮性物料的数量、质 量的分布规律
2、;并通过煤泥浮选的优化试验,从中选取合适的矿浆浓度、 捕收剂和起泡剂及其最佳用量,从而提高合格浮选精煤的产率,减少尾煤 的排放量,并根据其煤泥的特性,为*选煤厂煤泥浮选提供一些指导性意 见。 关键词:关键词:选煤厂,煤泥特性,浮选药剂,浮选工艺选煤厂,煤泥特性,浮选药剂,浮选工艺 II STUDY ON COAL SLURRY FLOTATION PROCESS SYSTEM OF WANGFENGGANG COAL PREPARATION PLANT ABSTRACT The selection of tiny coal has played important role in the co
3、al industry. It is becoming one of the important point in clean coal technology,and a valid way to make use of coal resources and protect environment comprehensively. As a main technique to separate coals mine flotation need to be further perfect its theories and practice. Aiming at Wangfenggang Coa
4、l Preparation plant, Through particle size analysis test and release test and analysis into the float coal properties, understanding of coal with different particle size distribution and ash distribution, floating material quantity, mass distribution, and through the optimization of coal flotation,
5、selection of suitable slurry concentration, collecting agent and foaming agent and theirs optimal dosage, to improve the qualification of flotation clean coal yield, reduce the emission of tail coal. According to the characteristics of coal slurry, it provides some guide opinions for fine coal flota
6、tion. KEYWORDS : : coal preparation plant, fine coal properties, floatation agent, floatation technology i 目录 摘要 . I ABSTRACT II 1.绪论 . 1 1.1 课题的意义 . 1 1.2 选煤技术的作用 1 1.3 煤泥浮选基本原理 2 1.4 浮选选煤技术发展概况 3 1.5 细煤泥的处理现状 5 1.6*选煤厂浮选工艺现状 6 1.7 研究内容与方法 9 1.8 浮选效果评价 . 10 2.原煤特性分析实验 . 11 2.1.原煤煤样水分、灰分的测定. 11 2.1.1 原煤煤样水分测定 11 2.1.2 原煤煤样灰分测定 12 2.1.3*煤样水分及灰分测定结果. 12 2.2 原煤粒度分布的分析 13 2.2.1 煤样的粒度分析 14 2.2.2 各粒度级别的灰分分析 . 14 2.2.3 入浮煤泥粒度分析结果 . 15 2.3 极细粒煤泥激光粒度分析 . 15 2.3.1 激光衍射粒度分析仪的原理 .