Converter ntau lawm - kev ntsuas yuav tsum tau ua rau tsawg phosphorus hlau:
1. Kev tswj qhov kub thiab txias:
Lub pas dej molten ntawm lub converter yuav tsum tau rhuab sib npaug. Nyob rau hauv nruab nrab ntawm cov txheej txheem tshuab, tus nqi ntawm cov coolant ntxiv yuav tsum tau kho kom tswj cov cua kub kub. Nws yog tsim nyog los tswj cov molten steel kub ntawm qhov kawg ntawm lub converter ntawm 1630-1650 degree .
2. Alkalinity tswj:
Nyob rau theem pib ntawm smelting, nws yog ib qho tsim nyog los xyuas kom meej tias lub hauv paus ntawm cov slag yog ntau dua los yog sib npaug rau 1.7, thiab nws yog ib qho tsim nyog los tswj cov ntsiab lus ntawm cov hlau molten thaum kawg ntawm lub converter mus rau 3. {{3} } 0.
3. Tswj cov ntsiab lus w(FeO) hauv slag:
Rau smelting qis carbon steel slag w (FeO) cov ntsiab lus tswj ntawm 18 feem pua -30 feem pua yog qhov zoo dua rau dephosphorization.
4. Slag kom muaj nuj nqis tswj:
Feem ntau, 1/3-1/2 slag yog tshwj tseg, uas tuaj yeem pab txhawb kev tsim sai ntawm cov slag thaum ntxov, tuaj yeem txhim kho lub hauv paus ntawm cov slag thaum ntxov, thiab yog qhov zoo rau dephosphorization thaum ntxov. theem.
5. Kev tswj ntawm slag nyob rau hauv tapping:
1) Lub converter tsim cov txheej txheem siab slag, thiab sim tsis txhob tswj cov slag lossis txo cov slag. Nyob rau hauv txoj kev no, txawm tias muaj me me ntawm slag nyob rau hauv lub converter, lub slag yuav thickened vim qhov kub ntawm cov hlau molten, uas txo cov kev ua ntawm P nyob rau hauv lub slag.
2) Thaum tapping, ntxiv 150-300kg txiv qaub rau cov hlau kom thicken lub slag los ntawm lub converter, ntxiv txhim kho lub hauv paus ntawm lub slag, thiab ua rau cov kev hloov nyob rau hauv slag zog los ntawm system txias thiab muaj zog deoxidation.
3) Tom qab lub slag thaiv tsis tau, tus nqi ntawm argon tshuab nyob rau hauv qab ntawm lub ladle yuav tsum tau txo kom tsis muaj zog cov dynamic tej yam kev mob muab los ntawm lub ntiaj teb sab nraud. Uas yog kom tsis txhob ntxiv melting ntawm thickened slag, thiab txo qhov diffusion ntawm phosphorus rov qab rau hauv cov hlau molten.
4) Tom qab refining, rau lub tshav kub nrog ib tug loj npaum li cas ntawm slag thiab lub slag yog obviously thinned, ib tug tsim nyog tus nqi ntawm txiv qaub yuav tsum tau ntxiv rau thicken lub slag hloov lub slag zog, thiab ces ntxiv deoxidation.
6. Txo cov phosphorus nce ntawm cov hlau:
Tsawg-qis, qis-phosphorus alloys nyiam kom txo qis cov txiaj ntsig ntawm alloys ntawm kev nce phosphorus hauv cov hlau molten. Yog tias siv ferrosilicon, cov nyhuv zoo dua li ntawm ferrosilicon.
7. Lwm tus:
Rau ultra-low phosphorus hlau, molten hlau pre-dephosphorization thiab tawm ntawm lub cub tawg sib sib zog nqus dephosphorization tshuab yuav tsum tau saws kom paub txog ultra-low phosphorus steel ntau lawm.