Hauv kev ua liaj ua teb ntawm kev tsim cov hlau, cov Sulfur cov ntsiab lus hauv hlau yog ib qho tseem ceeb cuam tshuam rau qhov zoo ntawm cov hlau. Cov ntsiab lus ntawm cov tsiaj ntawv uas kub dhau los tuaj yeem ua rau cov kab mob kub kub hauv cov hlau, txo nws lub zog, tawv thiab hnyav rau kev ua tau zoo thiab cov ntawv thov ntau yam ntawm cov hlau.Calcium silicon, raws li cov khoom siv metallurgical, ua lub luag haujlwm tseem ceeb hauv kev txo cov kab lus los ntawm cov txiv neej hauv cov hlau los txhim kho cov hlau ua kom zoo.
Kev txom nyem ntawm cov leej faj hauv cov hlau thiab qhov yuav tsum tau ntawm desulfurization
Sulfur feem ntau muaj nyob rau hauv steel nyob rau hauv daim ntawv ntawm hlau sulfide (FES). Thaum lub sij hawm cov txheej txheem cua sov ntawm cov hlau, cov foos fes tsis muaj roj nrog cov hlau (melting taw tes yog txog 985 degree), uas tau faib rau ntawm cov ciaj ciam. Thaum hlau yog dov los yog forged ntawm qhov kub thiab txias, qhov qis-melting eutectics yuav yaj, ua rau cov hlau tawg. Qhov tshwm sim no hu ua Kub Brittleness. Kub brittleness tiag cuam tshuam rau kev ua haujlwm thiab kev nyab xeeb ntawm cov hlau, tshwj xeeb yog rau cov hlau roj carbon monoxent, xws li cov lus pov thawj ntawm cov neeg Sulfur yuav tsum raug tswj hwm nruj. Feem ntau hais lus, cov sulfur cov ntsiab lus ntawm cov hlau zoo yog yuav tsum tau tswj hwm hauv qab {}. 03%, thiab cov hlau rau cov hom phiaj tshwj xeeb yog txawm tias yuav qis dua. Yog li ntawd, txo cov ntsiab lus Sulphur hauv cov hlau yog qhov tsim nyog ntsuas los txhim kho cov hlau zoo thiab ua tiav kev thov kev lag luam.
Cov yam ntxwv ntawm Calcium Silicoron thiab Desulfurization Txoj Cai
Casi yog ib qho kev sib sau ua ke xws li silicon, calcium thiab hlau. Nws lub ntsiab Cheebtsam silicon thiab calcium muaj cov tshuaj lom neeg muaj zog. Cov ntsiab cai desulfurations ntawm silicon calcium yog raws li cov tshuaj lom neeg thiab cov txheej txheem lub cev:
Deagidation: Silicon thiab calcium yog ob qho tib si deoxidizers muaj zog. Thaum lub sij hawm cov txheej txheem statmaking, cov pa hluav taws xob nyob rau hauv cov hlau molten yuav muab tso ua ke nrog cov leej faj, thiab siliccium reaterially nrog oxygen ua ntej tau ntxiv. Txij li calcium silicon muaj lub peev xwm decicidizing, cov pa roj oxygen hauv cov tshuaj tiv thaiv ntawm cov kab mob ntawm cov calcium sulfide (CAS).
Kev tsim cov calcium sulfide: calcium thiab leej fajrur muaj ib qho muaj zog sib xws. Tom qab calcium silicon tau ntxiv rau Molten Steel, calcium yuav hnov mob nrog cov leej faj los ua cov calcium sulfide. Calcium sulfide yog qhov chaw sib txuas ruaj khov nrog cov solubility qis hauv Molten hlau thiab yog yooj yim precipitated nyob rau hauv daim ntawv.
Ntab kev tshem tawm: qhov ntom ntawm cov khoom noj ntawm calcium sulfide generated yog me dua li ntawm Molten hlau, thiab nws yuav maj mam ya mus rau saum npoo ntawm molten hlau thiab sau lub ntsej muag. Nyob rau hauv txoj kev no, leej faj yog pauv los ntawm Molten Steel mus rau lub swb, yog li ua tiav lub hom phiaj ntawm kev txo cov cov ntsiab lus ntawm cov hlau. Nyob rau tib lub sijhawm, calciumsilicon alloy thiab faib cov sulfides, ua rau lawv muaj kev sib raug zoo thiab tusyees cuam tshuam ntawm cov sulfides ntawm cov khoom siv steel.
Cov txheej txheem kev thov tshwj xeeb ntawm calcium silicon alloy desulfurization
Hauv cov steel tsim tiag tiag, lub sijhawm thiab txoj kev ntawm kev ntxiv calcium sicium alloy muaj qhov cuam tshuam tseem ceeb rau cov nyhuv desulfurization. Feem ntau hais lus,CASI ALLOYtuaj yeem ntxiv rau ntau theem ntawm steelmaking, xws li thaum lub sij hawm steelmaking ntawm converter thiab tus ntaiv ua kom zoo dua qub txheej txheem. Ntxiv cov calcium silicon thaum lub converter muaj peev xwm ua rau cov khoom siv muaj zog los sib xyaw ua ke los ua kom muaj zog ntawm cov khoom siv muaj zog Ntxiv cov calcium silicon thaum lub tsev ua kom zoo dua theem tuaj yeem tswj tau cov txheej txheem desulfurization thiab txuas ntxiv txo cov cov ntsiab lus sulfur hauv cov hlau.
Thaum ntxiv calcium silicon, nws tseem tsim nyog los kho cov khoom sib xyaw thiab theem pib ntawm cov slag. Kev tsim kho kom nce qhov yooj yim ntawm cov nplais (feem ntau tswj tau nruab nrab ntawm 2-4) yog conducive rau cov tshuaj lom zem desulfurization. Tsis tas li ntawd, nws tseem yog ib qho tseem ceeb kom tswj kom muaj fluagity zoo ntawm cov kab sib txawv ntawm cov calcium sulfide los ntawm kev swb thiab txhim kho qhov desulfurization efficiency.
Raws li kev lag luam hlau txuas ntxiv txhawm rau txhim kho nws cov kev xav tau rau cov khoom lag luam steel, kom muaj rau cov khoom muaj callicon calloy alloy desulfurization technology. Yav tom ntej, silicon-callicon-calcium desulfurization thev naus laus zis yuav tsim kho hauv kev ua tau zoo dua, meej thiab ib puag ncig phooj ywg. Ntawm ib sab tes, R & D & D & D & DIRECTION ntawm kev ua kom zoo tshaj plaws thiab kev ua tau zoo ntawm silicon-calcium ua tau zoo thiab ruaj khov; Ntawm qhov tod tes, lawv yuav ntxiv dag zog rau kev sib xyaw ua ke nrog lwm cov thev naus laus zis desulfurization, calcium raws li kev ua si rau lawv cov kev ua si zoo thiab ntxiv mus txo cov kab lus sulfur hauv steel. Nyob rau tib lub sijhawm, hauv cov ntsiab lus ntawm kev tiv thaiv ib puag ncig ib puag ncig ib puag ncig, yuav ua li cas kom muaj kev tshawb fawb ib puag ncig, yuav ua li cas rau kev tshawb fawb yav tom ntej.
Hauv cov ntsiab lus, siliconcalcium alloy ua lub luag haujlwm tseem ceeb hauv kev txo cov ntsiab lus ntawm cov neeg siv tub rog thiab tau lees paub kev lag luam zoo ntawm cov hlau kev lag luam. Nrog kev nce qib nruam ntawm thev naus laus zis, silicon-calcium desulfurization technology yuav ua ib qho tseem ceeb tshaj plaws hauv kev tsim kho cov hlau.
