立磨工艺和功能说明Word文档格式.docx
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1.2Controlconcept控制方案.............................................................................................21
1.2.1Controlofgearboxlubrication（5F1.RM01.GLS01）减速机润滑的控制................................23
1.2.2Controlofauxiliaries辅助设备的控制.....................................................................................24
1.2.3Controloffinishedproductconveyance成品输送的控制.....................................................25
1.2.4Controlofgasroutes（5F1.GP01to5F1.GP05）气体路线的控制............................................25
1.2.5Controlofthehotgasproducer（5F1.HG01）热风炉的控制....................................................25
1.2.6Controlofmaindriveunitofmill（5F1.RM01.DRU01）andofnewmaterialdelivery
磨机主传动装置和原料供给的控制....................................................................................26
1.2.7Controlofwaterinjection（5F1.RM01.WTJ01）喷水的控制..................................................26
1.2.8Controlofgrindingpressure碾磨压力的控制..........................................................................26
2.Materialproperties物料特性............................................................................27
3.Operationofthegrindingplant碾磨厂的操作.....................................................29
3.1Philosophyofoperation操作原理...................................................................................29
3.2Start-up/Shutdownsequence启动/停机顺序...........................................................31
3.2.1Start-upsequence启动顺序.......................................................................................................31
3.2.2Shutdownsequence停机顺序......................................................................................................32
3.3Controlloops控制回路环...............................................................................................33
3.3.1Controlofdifferentialpressureofmill磨机压差的控制.......................................................34
3.3.2Controloftemperaturedownstreamofmill磨机后温度的控制..........................................34
3.3.3Controlofpressureupstreamofmill磨机前压力的控制.......................................................35
3.4Operationunderextraordinaryconditions特殊情况下的操作..................................35
3.4.1Start-upofplant系统设备启动.................................................................................................35
3.4.2Shutdownofplant系统设备的停止...........................................................................................36
3.4.3Operationwithinsufficientmaterialquantity喂料不足的操作...........................................36
3.4.4Overfillingofmill磨机过量喂料................................................................................................36
3.5.5Significantdecreaseofmillexitgastemperature磨机出口风温度明显降低……….............37
Listoffigures插图清单
Figure1:
Designoftherollermill图1:
辊式立磨的设计.......................................................................8
Figure2:
Wearprotectionofthefeedchute图2:
进料料槽的耐磨保护................................................9
Figure3:
Grindingrollercarrierwithrollerpairunit图3:
磨辊桥架和磨辊对装置..........................10
Figure4:
Grindingtable图4:
碾磨磨盘..............................................................................................11
Figure5:
Arrangementofthedamrings图5:
挡料圈的设置................................................................12
Figure6:
Damringheightener图6:
挡料圈增高...................................................................................13
Figure7:
Materialsatthenozzlering图7:
喷嘴环处的物料.................................................................14
Figure8:
Collectorforlightsectionsteel图8:
小铁颗粒收集...............................................................15
Figure9:
Milldrivesystemwithlubricationsystem图9:
带润滑系统的磨机传动系统......................16
Figure10:
Confiningairsystemforgrindingrollerbearings图10:
磨辊轴承的密封空气系统……...17
Figure11:
StructureoftheSEPOLseparator图11:
SEPOL选粉机的结构..........................................18
Figure12:
Basicsettingofguidevanes图12:
导向叶片的基本设定...................................................19
Figure13:
Controlscheme图13:
控制方案..........................................................................................33
1.Plantdescription工厂说明
Below,pleasefindaprocessandfunctiondescriptionofatypicalslaggrindingplant.The
designations（itemnumbers）usedinthetextrefertotheflowsheets.
以下是一个典型的矿渣粉磨系统的工艺和功能说明。
文中用到的代码（项目号）参考流程图中的设备编号。
Theslaggrindingplantbasicallyconsistsoftherawslagfeedingsystem,therollermillwiththedynamicseparatorandexternalmaterialcircuitwiththefinemetalextractionunit,ahotgasgenerator,thegasroutesincludingthesystemfan,thebagfilterandfinishedmaterialtransport.
矿渣粉磨系统由：
矿渣喂入装置、动态选粉机、带除细铁颗粒装置外物料循环、磨机本体、一台热风炉、包括风机的热风管路、袋收尘器和和产品输送装置。
TherollermillisaPOLYSIUSmilltypeRMSwithadynamicseparatortypeSEPOLRMS.Thegrindingplantisheatedbyahotgasgenerator,whichnormallyisfiredwithblastfurnacegas,naturalgas,heavyoil,lightoilorcoaldust.
立磨型号为RMS的伯利休斯磨配有型号为SEPOLRMS的动态选粉机。
粉磨系统由一台热风炉供热风，热风炉一般采用高炉煤气、天燃气、重油、轻油或用煤粉。
Thefollowingbasisvaluesapplytoatypical90t/hslaggrindingplantonly:
下列基本参数仅适用于一个典型的90t/h矿渣粉磨系统：
Millfeedmaterial磨机喂料:
blastfurnaceslag高炉矿渣
Milltype磨机型号:
RMC51/26/435
Throughput产量:
90tph（吨/每小时）
Productfineness产品细度:
4200cm2/g~4500cm2/g
Diameterofmillhousing磨壳直径:
7000mm
Diameterofgrindingtable磨盘直径:
5260mm
Diameterofgrindingrollers磨辊直径:
2600mm
Widthofthegrindingrollers磨辊宽度:
730mm
Quantityofthegrindingrollers磨辊数量:
4
Inst.powerofmaindriveunit安装的主马达功率:
2800kW
Separatortype选粉机型号:
SEPOL435RMS
Diameterofseparatorrotor选粉机转子直径:
4350mm
Diameterofseparatorhousing选粉机壳体直径:
8500mm
Inst.driveunit安装的马达功率:
250kW
Rotorspeed转子速度:
26-1541/min
Hotgasproducer热风炉:
.............
Max.heatingcapacity最大的加热容量:
45~55GJ/h
Max.hotgasquantity最大的热气量:
......m3/h
Fuels燃料:
naturalgasorblastfurnacegas:
高炉煤气,天燃气,重油,轻油或煤粉
Filterarea收尘面积:
约5000m²
Dustload粉尘浓度:
300~350g/m
Exhaustairvolume排气量:
28,000~31,000m3/h
Filtermedium过滤介质:
Polyacrylonitrile聚丙烯月青
Airtoclothratio:
空气对滤布比例<
1.2m³
/（m²
*min）
Pressuredrop:
压降<
15mbar
Compressedairconsumption:
压缩空气消耗约500Nm³
/hat7bar
1.1Designandfunctionoftheslaggrindingplant
矿渣研磨厂的设计和功能
Detailsofthedesignandfunctioningoftheindividualmachinesorplantcomponentsoftheslaggrindingplantaregivenbelow.
以下是矿渣粉磨系统内各单个设备或部件的设计和功能。
1.1.1Rawmaterialfeeding原料进料
Therawmaterialwhichconsistsofslagandgypsumisconveyedviathespeed-controlledweighbelts,itemno.5D1.WE01,5D1.WE02and5D1.WE03andisguidedina
controlledflowrateinthetroughedbeltconveyor5D1.BC01inaccordancewiththesetmix-ture.
原料包括矿渣和石膏，经过调速皮带称（项目号5D1.WE01，5D1.WE02）流量控制，按照设定的混合比用槽形皮带机（5D1.BC01）输送。
Toprotecttherollermillfrommetallicforeignbodiesasuspendedmagneticseparator,item5D1.MS01.MSJ01andametaldetector,item5D1.MT01.MTJ01areinstalledabovethecommonconveyorbelt5D1.BC02oftherawmaterialcomponents.Thesuspendedmag-neticseparatorbasicallyconsistsofapermanentmagnet,whichisenclosedbyabeltcon-veyorprovidedwithtransversegalleries.Duringoperationtheironpartsattractedbythemagnetarebroughtwiththisbeltconveyoroutoftheareaofthemagneticfieldandaredis-chargedinacollectingcontainer.
为保护辊磨，清除金属异物，原料输送皮带机（5D1.BC02）上装有悬挂式电磁除铁器和金属探测器（项目号5D1.MS01.MSJ01和5D1.MT01.MTJ01）。
悬挂式电磁除铁器主要包括一个永磁铁，配有一条横向的回转皮带。
在操作中铁块物被磁铁吸起，当回转皮带超出磁力范围后铁块物掉落至收集箱内。
Weknowfromexperiencethatthesuspendedmagneticseparatoralonedoesnotremoveall
ironparts.Thickmateriallayersonthetroughedbeltconveyor,coarsegrainsizerangesor
stickyandmoistmaterialcanmakeremovaloftheironmoredifficult.Non-magnetictramp
metalalsoisnocollected.Therefore,anadditionalmetaldetector（item5D1.MT01.MTJ01）
alsoisinstalled.
根据经验，我们知道仅仅使用悬挂式电磁除铁器是不能除去所有铁颗粒的。
皮带机上较厚的料层，较粗的进料粒径以及粘稠潮湿的物料都使除铁变得更加困难。
另外，也无法除去无磁性的夹杂金属物，因此，需增加安装金属探测器。
Themetaldetectorcontainstransmittingandreceivingcoilswithanalternatingmagneticfield
ofhighfrequencybetweenthemwhichisgeneratedbyanoscillatorinthecontroller.Whena
metalpartpassesthefield,eddycurrentsformasaresultofinductionandtakeawayenergy
fromtheoscillator.Asignalisformedfromthiswhichisrelayedtothecontrolsystemofthe
change-overflap,item5D1.CF01.CFJ01.Thechange-overflapremovesthemetalcon-tainingnewfeedmaterialanddischargesitinacontainer.Toavoidfrequentremovals,itis
necessarynottodetecttrampmetalwhichisnotgreate
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