Ferro Silicon na Kalisiyumu: Urufunguzo Gukoresha Inyungu na Porogaramu 

Ferro silicon na calcium - ibihugu bibiri byibanze bidakunze gutangaza amakuru yo gukora ibyuma ariko bigacecekesha buri toni yicyuma cyo murwego rwohejuru rwicyuma cyubatswe, umuyoboro wicyuma uhindagurika, cyangwa ibinyabiziga biva mumirongo igezweho. Muri Mongoliya Yimbere Xinxin Silicon Industry Co., Ltd., twatanze byombi mumyaka irenga 14 - ntabwo ari ibicuruzwa byitaruye, ahubwo nkabafatanyabikorwa bashishoza neza mugucunga ibyuma. Ferro silicon na calcium ntabwo "deoxidize" gusa. Bategura kuvanaho ogisijeni, nucleate grafite spheroide, guhagarika imigozi ya sulfide ya manganese, no gufunga sulfure muburyo butajegajega. Niyo mpamvu abakiriya bo muri Shandong, Hebei, na Vietnam batabaza * niba * babakeneye-barabaza * ikigereranyo *, * ingano ingana iki, * kandi ni kangahe ushobora kwemeza guhuza ibice? *

Kuki ferro silicon na calcium ikorana neza kuruta gutandukana

Ferrosilicon isanzwe (FeSi) ikuraho ogisijeni - ariko igasiga inyuma ya sulfure isigaye hamwe na morphologie idashyizwe hamwe. Kalisiyumu yonyine ihumeka vuba cyane mu byuma bishongeshejwe, itanga gukira nabi no gukwirakwiza bidahuye. Uhuze nka calcium siliside (CaSi) cyangwa silicon-barium-calcium ivanze-hanyuma ukunguka ubushyuhe bwumuriro, ukagenzura kurekura ibintu, hamwe na desulfurizasi ya synergiste. Mu bigeragezo by’icyitegererezo cy’uruganda rwacu, CaSi yongeyeho 0.8-1.2 kg / toni yagabanije ogisijeni yose kuva 32 ppm ikagera kuri 18 ppm * kandi * igabanya sulfure 37% hamwe nubuvuzi bwa FeSi gusa. Urufunguzo? Kalisiyumu ihindura alumina; silicon ikomeza ikirere kigabanya. Ntanubwo akora neza adafite undi.

Ibi tubibona buri munsi mubitekerezo byabakiriya: Uruganda rwa Tier-1 muri Tangshan rwahindutse ruva mu nsinga ya FeSi + CaAl rujya mbere ya Si-Ba-Ca mbere yo kunanirwa nyuma yo kunanirwa kunanirwa inshuro nyinshi muri mm 40 zatewe ibyuma. Umusaruro wabo wavuye kuri 71% ugera kuri 94% mu byumweru bibiri. Kubera iki? Kalisiyumu siliside yo hepfo yo gushonga (985 ° C na 1,260 ° C kuri Ca yera) ireka igashonga burundu mbere yo gusimbuka. Ibikoresho bya silicon birwanya reoxidisation mugihe cyo gukanda. Ntabwo aribyo bitekerezo-ibyo ni ubushyuhe 237 bukurikiranye hamwe na nodularity> 85% kuri ASTM A536 Icyiciro cya 65-45-12.

Ibintu bitatu bifatika kwisi aho ferro silicon na calcium ikora cyangwa igabanya imikorere

• Gutera ibyuma byangiza: Kalisiyumu siliside (mubisanzwe 30-33% Ca, 58-62% Si) nucleates Ubwoko bwa I grafite spheroide kuri 1,420–1,450 ° C. Gitoya Ca → flake igishushanyo; cyane → calcium oxyde dross. Igipimo cacu CaSi-30 cyujuje GB / T 20935.1–2018 kandi gifite kwihanganira ± 0.8% kubirimo Ca - birakomeye mugihe dosiye itanduye ari 0,12% yuburemere.
• Icyiciro cya kabiri cyo gutunganya: Muri RH degassers, Si-Ba-Ca alloys iruta FeSi + CaF₂ ivanze. Barium igabanya impagarara hejuru; calcium ikosora sulfure; silicon irinda ibibyimba byinshi. Umukiriya umwe yagabanije gukoresha argon 22% nyuma yo guhinduranya-kuko flotation yo kwihuta yihuse nta majwi arenze urugero.
• Umugozi winsinga ugaburira ibyuma byoroshye: Hano, ingano yingirakamaro ifite akamaro kuruta guhimba. Dusya CaSi kugeza D.₅₀ = 0,85 mm-ifatanye bihagije kugirango igabanye insinga ihamye kuri 280 m / min, yoroheje bihagije kugirango wirinde ibyago byo guturika. Abakiriya bavuga ko 92% ya calcium yagaruwe na 68% hamwe nifu ya sub-0.3-mm.

Ibyo abaguzi birengagiza-bakishyura nyuma

Bamwe batekereza ko ferro silicon yose hamwe nibicuruzwa bya calcium bisimburana. Ntabwo aribyo. Twagerageje ibyiciro 17 bya CaSi byatumijwe mumigabane itatu: 4 byananiye gusesengura amashanyarazi (amande arenze), 6 yerekanye gutandukanya Ca mubice, naho 3 birimo fosifore 0.15%-bihagije kugirango binjizemo ibyuma bike bya karubone. Ingaruka nyazo kwisi? Uruganda rukora imiyoboro i Jiangsu rwakuyeho toni 112 za API 5L X65 nyuma yo guterwa na hydrogène - rwashizwe kuri CaSi ikungahaye kuri fosifore yatambutse QC yari yinjiye.

Niyo mpamvu ibyiringiro byacu byiza atari impapuro-ni physics. Ubufindo bwose bukorerwa isesengura rya OES (Spectro MAXx), ubunini bwa lazeri (Malvern Mastersizer 3000), hamwe na microscopi yo mucyiciro gishyushye kugirango hamenyekane imyitwarire yo gusesa kuri 1,480 ° C. Twandika ibisubizo byose byikizamini - ntabwo dutsinze / gutsindwa gusa. Niba porogaramu yawe isaba <0.02% Al cyangwa <0.005% S, tuzagabana dosiye yibanze. Nta bicuruzwa byo kwamamaza. Gusa amakuru ushobora kugaburira muri Melt Shop MES.

Guhitamo ibicuruzwa byiza bitangirana nitanura ryawe - ntabwo ari kataloge yacu

Ibaze ibibazo bitatu mbere yo gutumiza:

1. Ni ubuhe buryo bwerekana ubushyuhe bwa salle? Munsi ya 1,400 ° C? Hitamo CaSi-28 (ingingo yo gushonga hepfo). Hejuru ya 1,480 ° C? Genda CaSi-33 kugirango isenyuke buhoro no kwinjira cyane.
2. Intego yawe ya sulferi niyihe? > 0.020%? Shyira imbere Si-Ba-Ca (Ba yongerera ubushobozi sulfide). <0.008%? Koresha insinga ya CaSi + MgFe kugirango usige neza.
3. Idirishya ryo kugemura rifatanye gute? Igihe cyacu cyo kuyobora ni iminsi 7 FOB Tianjin. Kubisabwa byihutirwa munsi yamasaha 48, dufata MT 120 ya CaSi-30 mububiko bwububiko-bwabanje kugeragezwa, kubipakira mbere, byiteguye gupakira ibintu.

Ferro silicon na calcium ntabwo byongera. Nibikoresho byuma-byuzuye, bidasubirwaho, kandi ntibishobora kuganirwaho mubikorwa byubunyangamugayo. Muri Imbere muri Mongoliya Xinxin Silicon Industry Co., Ltd., turabifata gutya: nta formulaire yimigabane, nta bisobanuro rusange, nta bitekerezo. Gusa ibishishwa byahinduwe kuri chimie yawe, ibikoresho byawe, hamwe nibisigazwa byawe. Kuberako iyo ubushyuhe bwawe butaha bukubise 1,430 ° C, icyangombwa ntabwo ari ikirango kiri mumufuka-ni ukumenya niba calcium ishonga * mbere yuko * ishusho, kandi niba silikoni iguma ikora * nyuma * argon ihagarika kubyimba.