36M3 烧结Word文档下载推荐.docx
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36M3 烧结Word文档下载推荐.docx
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Besidesmeetingtherequirementsofprocessproducingandenvironmentalprotecting,tryourbesttosavetheinvestmentandreducethelanduse.
2设计范围、规模、产品方案及工作制度
Scope,scale,productsproposalandworkingsystem
2.1设计范围、规模Scopeandscaleofdesign
2.1.1设计范围:
从简易料场开始至冷却后的烧结矿成品皮带(也可根据需要设成品仓),包括工艺、土建、给排水、燃气、通风除尘、电气、仪表自动化等各专业的设计。
Designscope:
fromthesimplestockyardtoconveyorbeltforcoldsinteredore(alsocanbereplacedintosinterbin),includingprocess,civilwork,supplyanddrainageofwater,gasforcombustion,ventilationanddedusting,electricity,automaticinstrumentsanddesignsofanyprofession.
2.1.2设计规模:
1台36m2环型烧结机,利用系数1.40t/(m2·
h),年产高碱度烧结矿40万吨。
Designscale:
one36m2circulartravellingsintermachinewithproductionof0.4mtpahighalkalinitysinterore,utilizedcoefficientis1.40t/(m2·
h),
2.2产品方案ProductionProposals
烧结矿品位:
TFe55.5%;
Sinteroregrade:
TFe55.5%
烧结矿碱度:
CaO/SiO2=1.8Sinterorealkalinity:
CaO/SiO2=1.8
烧结矿粒度:
5~150mm;
Sinteroregrainsize:
5~150mm
铺底料粒度:
10~20mm;
Hearthlayergrainsize:
10~20mm
烧结矿温度:
≤150℃;
Sinteroretemperature:
≤150℃
烧结FeO含量:
≤10%。
FeOcontent:
≤10%
2.3工作制度Workingsystem
烧结厂为连续工作制,主机年工作330天,7920小时,每天3班,每班8小时,主机作业率90.4%。
Sinterplantwillfollowthecontinuousworkingsystem,includingmainmachineof330daysworkingperannumabout7920hours,tripleshiftperdayand8hourspershift.
3原、燃料供应Supplyofrawmaterialandfuel
3.1含铁原料FecontainedRawmaterials
外进含铁原料用汽车运至料场,分类堆放。
铲车将各种原料送至烧结料库内。
含铁原料的进厂粒度小于10mm。
Fecontainedrawmaterialsfromoutsidewillbetransportedintostockyardsbytrucks,pilingupasdifferentkind.Forkliftswilltransportvariousrawmaterialsintosintermaterialsbin.TheincominggrainsizeofFecontainedrawmaterialsshouldnotbegreaterthan10mm.
3.2熔剂Flux
熔剂有石灰石、白云石进厂粒度均为3~0mm。
Fluxesincludelimestoneanddolomite,andtheirincominggrainsizeareboth3~0mm.
3.3燃料Fuel
烧结用固体燃料为焦粉,进厂粒度为25~0mm,由汽车运至配料仓库。
车间内设燃料破碎加工系统,破碎成粒度为3~0mm含量>
90%的焦粉。
点火燃料为高炉煤气,发热值不小于750kCal/m3,正常用量:
车间接点压力约6-8KPa。
Adoptcokepowderassolidfuelforsintering,theincominggrainsizeshouldbe25~0mmandwillbetransportedintobatchingbinbytrucks.Acrushingsystemforcombustionisequippedinworkshop,crushingcokepowderinto3~0mmgrainsizewithcontentgreaterthan90%.
AdoptBFgasasignitionfuelwithcalorificvaluegreaterthan750kCal/m3,normalconsumption:
junctionpointpressureofworkshopisabout6-8KPa.
3.4配料仓设置Batchingbinset-up
配料室采用抓斗上料,含铁原料采用圆盘加电子秤自动配料,其它原料采用托料秤自动配料。
所有调速电机采用变频调速。
Batchplantadoptsgrabbucketforfeeding,usingdiskandelectronicbalanceforautomaticbatchingofFecontainedrawmaterials,andusematerialhoistingbalanceforotherrawmaterials’automaticbatching.Allthespeed-regulatingelectricenginesadoptedarefrequencycontrol.
4供水、供电条件Conditionofwatersupplyandpowersupply
4.1生产、生活、消防用水由建设单位生活、生产、消防供水管网供给。
Thewaterconsumptionforproducing,living,fire-fightingaresuppliedbyliving,producingandfire-fightingwatersupplypipenetworkofdevelopmentorganization.
4.2电源引自钢厂内变电所,电压等级为11kV,双回路供电。
11KV母线采用单母线分段,正常情况两段母线分列运行。
当一回路故障时,母联开关合上,另一回路可承担全部负荷。
Powerissuppliedbysubstationofsteelplant,voltagelevelis11kVandadopttwo-circuitpowersupply.11kVbus-barisadoptedinsinglebus-barwithnon-segmentedwiringandnormallythetwosegmentsareruninapportionmode.Whenonecircuitisinaccident,bus-couplerwillswitchdown,andtheothercircuitcanaffordalltheload.
5烧结工艺概述Sinterprocessgeneral
5.1工艺特点简述:
Processcharacteristicbrief
5.1.1原料准备与配料Rawmaterialpreparingandbatching
烧结原料包括含铁原料、熔剂(石灰石、白云石)、燃料、杂矿,这些原料除要求一定化学成分外,还要求化学成分相对稳定。
矿粉、焦粒、高炉返矿等用汽车运至烧结配料室的料池内,用抓斗起重机,将料池内的物料抓入料仓内。
配料室内设焦粒仓一个,25~0mm的焦粒和无烟煤经仓下给料机用皮带送至对辊破碎机进行粗破碎,粗破碎后的燃料用皮带送入四辊破碎机破碎成3~0mm的燃料。
破碎后焦粉设一个仓;
SinterrawmaterialsincludeFecontainedrawmaterials,fluxes(limestoneanddolomite),fuel,andsundryore.Besidesthenecessarychemicalcontentsofthesematerials,thestabilizationofchemicalcontentsisalsoneeded.
Orefines,cokeparticleandBFreturnoreetc.aretransportedintomaterialpoolofsinterbatchingplantandgrabbedoutintostockbinbygrabcrane.Onecokebinissetupinbatchingplant,25~0mmcokeparticleandanthracitecoalaretransportedbyconveyorbeltofsupplyequipmentunderbunkerintodouble-rollcrusherforcrudecrushing,thecrushedfuelsaretransportedtofour-rollcrusherbyconveyorbeltcomingintothegrainsizeof3~0mm.Andastoragebinissetupforcrushedcoke.
以上几种原料按设定比例经秤量后给到配料皮带上,再经混一胶带机转运送至一混机。
对混合料的要求是配比准确,有良好的透气性。
Theserawmaterialsmentionedabovearetransportedintobatchingconveyorbeltafterweighingasperdesignedproportion,andkeepingbetransportedbybelt-conveyorintomixingmachine1.Therequirementstomixedmaterialarewithaccurateproportionandgoodairpermeability.
5.1.2混合布料:
Mixingdistribution
在混合过程中加入必须的水分使烧结料充分润湿,本设计采用的是二次混合工艺。
在一次混合时主要是混匀并加入适当水润湿,二次混合时补足到适宜水分使混合料中的细粉造成球。
Duringmixingprocedure,addingnecessarywatercanmakesintermaterialcompletehumidification,thisdesignadoptssecondarymixingprocess.Primarymixingisusedtoachievehomogeneousmixingandproperwatermoisteningeffect,andsecondarymixingisusedtocomplementproperwaterformakingthefinesofmixedmaterialintoballshape.
烧结机采用圆辊给料机布料,使混合料沿台车宽度上均匀分布,以保证透气性相对一致,同时保证料面平整,并有一定松散性。
Sinteringmachineisadoptedincylinderrollingbatcherfordistribution,distributingmixedmaterialsalongtheloopwheelmachinehomogeneouslytoensuretheconcordanceofairpermeability,meanwhilethesurfaceofmaterialsshouldbeflatandwithcertainfriability.
5.1.3烧结室Sinteringplant
铺底料由胶带机从冷矿筛分室运到烧结室的铺底料矿槽贮存,经过铺底料矿槽下的给料闸门及摆动漏斗,将铺底料均匀的布到烧结机上。
Hearthlayeraretransportedbybelt-conveyorfromcoldorescreenerchamberintohearthlayerbunkerofsinterchamberforstorage,throughfeedingdraw-gateandswingingfunnelunderhearthlayerbunker,hearthlayerisdistributedhomogeneouslyontothesinteringmachine.
混合料由胶带机从二混室运到烧结室的混合料矿槽内,再经过布料器均匀地布到烧结机台车上。
Mixedmaterialsaretransportedbybelt-conveyorfromsecondarymixinghouseintomixedmaterialbunkerofsinteringhouse,andthroughdistributingdeviceequablydistributedontosinteringloopwheelmachine.
混合料经点火后进行抽风烧结,点火燃料为高炉煤气,点火温度在1050±
50º
C,要求高炉煤气压力6000~8000Pa。
烧结台车上的物料,经点火器进行料面点火,使料面烧结并使配入的燃料继续燃烧。
在烧结机尾,烧结饼经单辊破碎机破碎至150~0mm。
破碎后的烧结矿直接进入鼓风带式冷却机冷却,冷却后的烧结矿通过皮带运至冷矿室进行整粒。
烧结矿整粒系统采用2台冷筛串联集中式配置,将烧结矿分成5~0mm、10~5mm、20~10mm、+20mm四级。
第一段筛出5~0mm冷返矿,返回到配料室重新参加配料;
第二段筛出10~5mm成品烧结矿;
第三段筛出20~10mm铺底料;
筛上>
20mm为成品。
20~10mm粒级铺底料多余部分送到成品胶带机上。
Afterignition,airdrawingshouldbedoneformixingmaterialsintering,ignitedfuelisBFgas,andignitedtemperatureshouldbe1050±
C,BFgaspressureshouldbe6000~8000Pa.Throguhigniter,ignitionstartsonthesurfaceofmaterialsonsinteringloopwheelmachinetosinterthesurfaceandkeepthesucceedingfuelcombusting.Atthetailofsinteringmachine,bythesinglerollcrusher,sinteredcakeiscrushedinto150~0mm.Crushedsinteroreistransportedintoblowingstraight-linecoolerforcooling,throughconveyorbelt,coldsinteroreistransportedintocoldorehouseforparticleclassifying.Twocold-screenersaresetupinmodeofcentralin-lineforparticleclassifyingsystem,classifiedsinteroreincludefourlevels:
5~0mm、10~5mm、20~10mmand+20mm.Thefirstpart(5~0mmcoldreturnore)istransportedbacktobatchinghouseforrebatching;
thesecondpart(10~5mm)issinterore;
thethirdpart(20~10mm)isusedashearthlayer;
Andtherestoreonthescreener(greaterthan20mm)isendproducts.Redundanthearthlayer(20~10mm)isreturnedtoendproductbelt-conveyor.
5.1.4主抽风机及机头电除尘器室
Mainextractionfanandelectricaldedusterinheadsection
烧结生产过程中抽出的烧结废气经电除尘器净化后排放到大气中去。
电除尘器可以保证废气排放达到标准。
电除尘下的灰尘经双层卸灰阀、埋刮板机、加湿机加湿、皮带机送至配料室杂料池。
为防止主抽风机的躁声污染环境,主抽风机的出口安装消音器。
Duringsintering,theexhaustairisextracted,throughelectricaldeduster’spurificationreleasingintoatmosphere.ElectricaldedustercanguaranteeexhaustairreleasingachievingtheStandards.Thededustedashthroughcindervalve,embeddedscraper,moisteningmachineandbelt-conveyoristransportedintosundrypoolofbatchinghouse.Toavoidnoisepollutionofmainextractionfan,silencerisadoptedforthetuyere.
6工厂公辅设施简述Plantauxiliaryfacilitiesbrief
6.1通风、除尘ventilationanddedusting
6.1.1通风与空调:
混合室及通廊采用自然排气系统。
Ventilationandairconditioning:
mixinghouseandgalleryusingnaturalexhaustsystem.
6.1.2除尘:
所有产尘设备及产尘点均密封并进行抽风,根据粉尘性质及车间的分布情况,整个烧结厂共设立4个除尘系统。
Dedusting:
alltheash-makingequipmentsandash-makingsitesaresealedandextracted,accordingtotheashcharactersandworkshopsdistribution,fourdedustingsystemsaresetupforwholesinteringplant.
机尾除尘系统选用1台单室三电场电除尘器;
Dedustingsystemofmachinetailusesonesinglechamberdedusterofthreeelectricfields.
机头除尘系统选用
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