链篦机 回转窑热工制度的研究与改进

:1005-7854(2008)03-0050-05-1,2,2,2,1(11,100083;21,064404):200t/a-,,,,,,,-:;;;;:TF04616:ARESEARCHANDIMPROVEMENTOFTHERMALSCHEDULEINCHAINGRATE2ROTARYKILNXUJing2hai1,2,LIHong2ge2,ZHANGYong2ming2,ZHANGQiang1(11SchoolofCivil&EnvironmentEngineering,UniversityofScienceandTechnologyBeijing,Beijing100083,China;21ShougangMining,Qianan064404,Hebei,China)ABSTRACT:Testanalysisandstudiesofgreenpelletcrackinginchaingrateandringinrotarykilnareputfor2wardinachaingrate2rotarykilnproductionlinewithoxidizedpelletof2millionst/a1Properwindvelocityandtemperaturefordryingofthegreenpelletinchaingrateareacquired,aswellasthetemperaturegradientparam2etersinchaingrateandrotarykiln,onwhichthetechnicalreformandparametricadjustmentoftheproductionlinearecarriedout1Theproblemsofgreenpelletcrackinginchaingrateandringinrotarykilnaresolvedconse2quently,andthepelletproductionisindirectmotiononinastablestate,withimprovedcapacityandquality,andreducedenergyconsumption1Notableeconomicalbenefitsareobtained;besides,theresearchandimprove2mentcarriedinthisstudyprovidefullandaccuratetechnicalbasisforthedesignandproductionofchaingrate2rotarykilnforoxidizedpelletonalargescale1KEYWORDS:oxidizedpellet;chaingrate;rotarykiln;greenpelletcracking;ringinrotarykiln:2007-11-06:,,,2000,100t-,20034,200t-,,,:(1)87m,;--;(2)415m56m,,,22min;(3)519m38m,,35min;(4)1815m,121m2,48min,,,,17320089MINING&METALLURGYVol.17,No.3September200810d,,116118m,,,,1111,,,10m,,,40d,30d,,,2004112,20,80h;320h,75159%,9014%14181%,5500t/d,,6060t/d112,,,1t32159kg,18kg,81106%;100t/a8117kg2004,200t/a100t/a11200t/a100t/aFig.1Comparisonofcoalconsumptionofproductionlineswith2and1milliont/a113,,;,,,,,,2000N/,2000N/1200412004Table1Compressivestrengthtestresultsofpelletineachmonthof2004/(N-1)/%12263601142224657160319301517242088291345207431128620481817572060121118206416167920932613510214738194112334621691223166013821433614422004,,,,,,,,,,,,,,,,,15:-211,,39152%,,37179%,18173%,,,,,,,,21111,56m415m,,11m,12m,12m21m:1,30m3/h;2,60m3/h;1,90m3/h,4915m2,100%,1168m/s80%,1135m/s150,,5m2030,60,,4min:150,018m/s,012m/s,216m/s,10:,112m/s,,,510%;114116m/s,,416%;118212m/s,,312%;214m/s,,214%,,118212m/s:210m/s,100,20,260,9:,,120,,,615%;140160,,516%;180220,,316%;240,,118%,,2min,,118212m/s,2002021112200210m/s,4min,316%,,,1016mm50,613%617%,2m/s5min,240,20,8,,:280,115%118%,;340,015%,,30%;300320,018%110%,,300320211132420,254,,:6m350370,6m320340,320,4%,,320,,,212107011001200125010601100,1060,,,,,,,1070110010301060;1070110010001030;107011009701000;104010709701000;104010709409705,6h,,,,4,,,,:(1)1070110010301060,FeO215%1112N/,8%(2)10701100,10001030,FeO218%992N/,4%(3)10701100,9701000,FeO312%975N/,1%(4)10401070,9701000,FeO314%950N/,,(5)10401070940970,FeO415%830N/,,20%1/3,104010709701000,,,,,1040107097010008h,4h4h1115r/min0185r/min,,31115r/min(25min),964N/,FeO3153%;0185r/min(36min),1047N/,FeO311%,,,,,3311,11m8m,4915m236m2,,015016m/s,,30m3/h,210m/s,180350,:35:-800mm;,20020,118212m/s,200203050,312,12m15m,320370,300320,,6m9m,,6m,,,,,,,,,410%,313,,,31311,10401070970100030,6031312,,,11101115r/min0185r/min,910min31313,,23m,4(1),,,,,3%5%,,;,(2),,2,,,150200mm,(3)20051,200411011320053;2006,46,200475159%,2005,2006,200783169%,89173%91173%,,20042007226132,258129,267148280107t/(4)-,,,,FeO;,FeO20052006200745613,5971370012N/,2004381N/7513,2161331912N/;FeO7147%,5163%3159%,200414105%6158%,8142%10146%;,,2005200620072297,24142507N/,20042143N/,154,271364N/;2004200520062007(63)45,:(1),,,;46%,,,,,,,,(2),,,:,,,:11[J]1,2006(15):12-1512,,,1[J]1,2006(3):16-1913,,1™¦’[J]1,1999,85(1):27-3214,,,1[J]1,2006(3):16-1815G1[J]1,2007(10):31-3516,,1[J]1,2005(5):22-2617ChenWJ1(1995)[C]1,1:,199818LifsetRJ,GordonRB1Wherehasallthecoppergone:thestocksandflowsproject,part1[J]1JOM,2002,54(10):21-26191[J]1(),1991(4):10-131101[J]1,2003(2):20-24111VaisdurdS,BernerA,BrandonDG1Slagsandmattesinvanyukovsprocessfortheextractionofcopper[J]1Met2allurgicalandMaterialTransB,2002,33(8):551-5591(54)FeO0151%,0162%,0133%0130%,(5)-,,,,,,2004200520062007()38103271281912318103kg/t,5118212m/s20020,,3%,,,2200N/,FeO,-,,90%,280t,()18kg/t,,1000:11[M]1:,2005121[J]1,2005(5):1-413,150[J]1,2004(6):1-314,1[M]1:,200115,,1[J]1,2006(8):73-78136: