Steel slag siv los ua metallurgical raw khoom
1) Recycling scrap steel, steel slag muaj ib tug loj npaum li cas ntawm cov hlau, nrog ib tug nruab nrab loj feem ntawm kwv yees li 25%, ntawm cov hlau hlau account rau txog 10%. Tom qab sib nqus sib nqus, cov hlau seem ntawm ntau qhov ntau thiab tsawg tuaj yeem rov qab tau, nrog rau feem ntau ntawm cov qib siab steel slag uas muaj hlau siv los ua raw khoom rau steelmaking thiab ironmaking.
2) Steel slag yog siv los ua cov khoom siv sintering. Vim tias muaj 40% mus rau 50% CaO hauv converter steel slag, siv nws los ua cov khoom siv sintering es tsis yog qee cov limestone tuaj yeem rov ua dua cov hlau seem, hlau oxide, calcium oxide, magnesium oxide, manganese oxide, tsis tshua muaj cov ntsiab lus (V, Nb, thiab lwm yam) nyob rau hauv steel slag, tab sis kuj nce tus naj npawb ntawm nruas ntiv tes thiab agglomeration tus nqi, uas yog zoo rau sintering, pelletizing, thiab txhim kho sintering ceev. Cov cua sov tsim los ntawm cov tshuaj tiv thaiv oxidation ntawm Fe thiab FeO hauv steel slag tuaj yeem txo cov roj noj ntawm sintered ore.
3) Steel slag yog siv los ua lub tshuab hluav taws xob tawg, thiab hloov cov hlau slag muaj 40% mus rau 50% CaO thiab 6% mus rau 10% MgO. Recycling nws li lub moj tej tawg furnace co hnyav tuaj yeem hloov limestone thiab dolomite, yog li txuag cov peev txheej ore.
Tsis tas li ntawd, vim qhov kev siv hluav taws xob xav tau rau kev decomposition ntawm limestone (CaCO3) thiab dolomite [CaMg (CO3) 2] rau hauv CaO thiab MgO, thaum Ca thiab Mg nyob rau hauv steel slag muaj nyob rau hauv daim ntawv ntawm oxides, ib tug loj npaum li cas ntawm thermal. lub zog tau txais kev cawmdim.
4) Steel slag yog siv los ua cov khoom siv slag rau steelmaking, thiab xa rov qab mus rau lub converter rau smelting yuav txo tau cov khoom siv raw thiab tag nrho cov nyiaj slag. Rau smelting nws tus kheej, nws tseem tuaj yeem txhawb nqa slagging thiab shorten lub sij hawm smelting.
