摘要
为满足霍尔辛赫矿井产能提升需求,对选煤厂进行改扩建分选工艺设计。分析了原煤可选性,分选密度为1.70 g/cm3时,块精煤和末精煤灰分分别为13.56%、11.60%。在分析选煤厂原工艺流程的基础上,对选煤厂进行改扩建,原煤分级粒度由13 mm增至18 mm,块煤分选系统不变,增加一套末煤分选系统和一套浮选系统,并计算得出改造后产品组成为:块精煤产率21.12%,灰分12.90%;末精煤产率51.02%,灰分10.48%;中煤产率7.79%,灰分35.85%。以技术先进、性能可靠、高效低耗为原则对主要设备进行选型,新增了末煤重介旋流器、分级旋流器、螺旋分选机、浮选柱等设备,并详细分析了设备布置情况。改扩建后,选煤厂生产能力由3.0 Mt/a提升至5.0 Mt/a,提高了系统对煤质的适应性,增强了末煤产品的灵活性。
To improve the productivity of Huoerxinhe coal mine, perform the design of coal separation process for the capacity expansion. Analyze the washability of raw coal.When the separation density is 1.70 g/cm3 ,the ash of lump clean coal and slack clean coal are 13.56 percent and 11.60 percent respectively.The reformation measures arc as follows.The partition size of raw coal is increased from 13 mm to 18 mm,the separation system for lump coal isn＇t revapmed,install a slack coal separation system and flotation system.Calculate the product composition.The yield and ash of lump clean coal is 21.12 percent and 12.90 percent,the yield and ash of slack clean coal is 51.02 percent and 10.48 percent,the yield and ash of middlings is 7.79 percent and 35.85 percent.Choose the equipments in compliance with advanced technologies, reliable performance, high efficiency and low consumption principle.Add a dense-medium cyclone for slack coal, a classifying cyclone ,two spiral separators and three flotation columns.The capacity of the separation plant increase from 3.0 Mt/a to 5.0 Mt/a.
出处
《洁净煤技术》
CAS
2014年第3期24-27,32,共5页
Clean Coal Technology
基金
天地科技开采设计事业部青年创新基金资助项目(KJ-2013-TDKC-20)
关键词
分选工艺
重介质
可选性
浮选
末煤分选
separation process
dense medium
washability
flotation
slack coal separation
