选煤厂煤泥浮选工艺的研究.doc

本科毕业论文
望峰岗选煤厂浮选工艺研究
STUDY ON COAL SLURRY FLOTATION PROCESS OF WANGFENGGANG COAL PREPARATION PLANT
学院(部): 化学工程学院
专业班级: 化工08-3班
学生姓名: 刘家华
指导教师: 聂荣春
2012年5月7日
望峰岗选煤厂浮选工艺的研究
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。
针对望峰岗选煤厂,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;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,为望峰岗选煤厂煤泥浮选提供一些指导性意见。
关键词:选煤厂,煤泥特性,浮选药剂,浮选工艺
STUDY ON COAL SLURRY FLOTATION PROCESS SYSTEM OF WANGFENGGANG COAL PREPARATION PLANT
ABSTRACT
The selection of tiny coal has played important role in the coal industry. It is ing one of the important point in clean coal technology,and a valid way to make use of coal resources and protect prehensively. As a main technique to separate coals mine flotation need to be further perfect its theories and practice.
Aiming at Wangfenggang Coal 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, 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 flotation.
KEYWORDS : coal preparation plant, fine coal properties,floatation agent, floatation technology
目录
摘要 I
ABSTRACT II
1
课题的意义 1
选煤技术的作用 1
煤泥浮选基本原理 2
浮选选煤技术发展概况 3
细煤泥的处理现状 5
7
研究内容与方法 9
浮选效果评价 10
11
、灰分的测定 11
11
12
12
13
14
各粒度级别的灰分分析 14
15
15
15
实验步骤 16
极细粒煤