Calcium silicon mu green steelmaking? 

Mumamva kupanga zitsulo zobiriwira ndipo nthawi yomweyo mumaganiza kuti haidrojeni, ng'anjo yamagetsi yamagetsi, kukonzanso zinthu zakale. Kulondola? Ndiwo chithunzi chachikulu. Koma pansi pa ladle, mukusintha kwa chemistry yosungunuka yomaliza, pali bata, nthawi zambiri osamvetsetseka: calcium silicon. Sizokongola. Ndi deoxidizer, desulfurizer. Koma udindo wake mu kusintha kobiriwira ndi wokhudza kuthandizira bwino ndi khalidwe mu njira zatsopano, zochepetsera mpweya kuposa kukhala mutu wamutu wokha. Malingaliro olakwika amawatenga ngati chowonjezera china cha aloyi. Zoona zake, kachitidwe kake kamasonyeza momwe zitsulo zanu zilili zoyera, momwe caster yanu imayendera bwino, ndipo pamapeto pake, ndi zokolola zingati zomwe mumapeza kuchokera kuzitsulo zanu zotsika mtengo, za carbon primary kapena scrap charge. Zilakwitseni, ndipo zilakolako zanu zobiriwira zimatsekeka ndi kutsekeka kwa nozzle ndi zophatikizika.

The Core Mechanism: Kuposa Kungochotsa Ma oxygen

Aliyense amadziwa CaSi ndi deoxidation. Mukachiponya, chimagwira mpweya ndi sulfure, ndikupanga slag yoyandama. Buku lophunzirira. Koma nuance - gawo lomwe mumangophunzira mukamayang'ana lipoti lowunikira - ndi za mtundu wa zophatikizika zomwe zimapanga. Chithandizo cha calcium choyera chingakhale chovuta; ndizosakhazikika, zokolola zake sizikugwirizana. Calcium silicon, ndi silicon ikugwira ntchito ngati chonyamulira ndikuwongolera zomwe zimachitika, imakupatsani kumasulidwa kosinthika. Cholinga sikungochotsa O ndi S, ndikusinthira zingwe zotsalira za alumina (Al2O3) kukhala ma aluminiyamu amadzimadzi a calcium. Zophatikizika za globular izi ndi zofewa, sizimasokoneza mphuno yanu yolowera m'madzi, sizimayambitsa ming'alu pamizere yopyapyala yolimba kwambiri. Apa ndipamene ulalo wobiriwira umayambira: kuponyera kosalala kumatanthauza kusweka pang'ono, zocheperapo, mphamvu zochepa zomwe zidawonongeka kusungunulanso zodulidwa.

Ndikukumbukira kuyesa pa mphero kusunthira kumagulu apamwamba kwambiri mu EAF yawo - kusuntha kobiriwira kobiriwira. Zotsalira zambiri zimatanthawuza zinthu zambiri za tramp, zotsalira zosinthika. Mchitidwe wawo womwe udalipo ndi deoxidizer woyambira udayambitsa kutsekeka koyipa pa tundish. Tinasinthira ku kalasi inayake ya CaSi yokhala ndi chiŵerengero cholimba cha Ca / Si ndi kukula kwa tinthu kolamulidwa (ganizirani 10-30mm, osati ufa). Zotsatira zake sizinali zitsulo zoyeretsera zokhazokha, ndiye woyang'anira ntchitoyo akuwona kuti amayendetsa maulendo atatu motalikirapo popanda kusintha kwa nozzle. Ndizo zogwirika. Ndi nthawi yocheperako, zinyalala zocheperako, matani ochulukirapo pa ola limodzi. Mtengo wa alloy unali wokwera kwambiri, koma ndalama zogwirira ntchito zidachotsa madziwo.

Njira yolephera pano ikuganiza kuti CaSi yonse ndi yofanana. Wopereka ngati Malingaliro a kampani Inner Mongolia Xinxin Silicon Industry Co.,Ltd. (mutha kuwona kuchuluka kwazinthu zawo pa https://www.xinxinsilicon.com) adzalemba zolemba ngati Ca28-Si60 kapena Ca30-Si58. Kusiyanako pang'ono kwa kashiamu, kuchuluka kwa aluminiyamu, barium, kapenanso machulukidwe osowa padziko lapansi omwe angaphatikizidwe - ndizofunikira kwambiri. Kugwiritsa ntchito kalasi ya calcium yochepa pa ntchito yakuya ya desulfurization ndikuwononga ndalama ndi nthawi. Mukamaliza kuwonjezera zina, zomwe zimawonjezera kujambula kwa silicon, zomwe zitha kutaya chemistry yanu yomaliza. Ndikuchita kulinganiza komwe kumaphunzira kuchokera ku zolakwika.

Zovuta Zothandiza Pakugwiritsa Ntchito

Kotero mwasankha kalasi yoyenera. Tsopano, mumalowetsa bwanji mu sungunuka? Jakisoni wawaya ndiye mulingo wagolide wa zokolola ndi kuberekanso. Mutha kuyimilira ndendende mu ladle pakuya koyenera. Koma mawaya odyetsa ndi likulu, ndipo waya wokhazikika pawokha ndi mtengo wowonjezera. Mashopu ena ang'onoang'ono, makamaka m'misika yomwe ikubwera, amagwiritsabe ntchito matumba - kuponya matumba osindikizidwa mu ladle pamene akugogoda. Vutolo? Mumapeza kuphulika kochititsa chidwi, kowononga kwa mpweya wa calcium, kubalalitsidwa kosakhazikika, ndi zokolola zomwe zimatha kusuntha kuchokera pa 15% mpaka 40%. Ndawona kutentha komwe calcium yambiri idangowotchedwa munjira yochotsa utsi. Osati zobiriwira, osati zachuma.

Kusunga nthawi ndi chinthu chinanso cham'mimba. Onjezani molawirira kwambiri, pamene ntchito ya okosijeni ikadali yokwera, ndipo calcium imadyedwa muzowopsa zachitsulo cha slag. Onjezani mochedwa, pamene kutentha kukutsika, ndipo ma inclusions alibe nthawi yoyandama. Malo okoma nthawi zambiri amakhala panthawi ya chipwirikiti chofewa cha argon, pambuyo poti deoxidation idagwetsa mpweya wochuluka pansi koma chitsulo chisanapite ku caster. Mukutsuka zosungunula. Kulakwitsa izi kumatanthauza kuti zophatikizika zamadzi zomwe mudapanga kuti zisalekanitse; amatsekeredwa mu chingwe cholimba, kukhala zilema.

Ndiye pali kusasinthasintha kwazinthu zopangira. Gulu la CaSi lomwe lili ndi chinyezi chambiri kapena kukula kwapang'onopang'ono lingakhale tsoka. Chinyezi chimatsogolera ku chithunzi cha haidrojeni, porosity. Kukula kwapang'onopang'ono (zolipiritsa zambiri) kumabweretsa kusungunuka mwachangu komanso kusachita bwino. Nthawi ina tinali ndi katundu pomwe thumba linali losauka, ndipo alloy anali atadzaza pang'ono panthawi yodutsa. Zokolola zinatsika kwambiri, ndipo kubwereranso kwa sulfure pakutentha kotsatira kunali koopsa. Ikugogomezera chifukwa chake kuyanjana ndi wopanga makina olimba ndikofunikira. Kutchulidwa kwa Xinxin Silicon za kayendetsedwe kabwino ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kabwino kake. Mizere yawo yopangira calcium silicon, mawaya, ndi ma nodulazer akuwonetsa kuti amamvetsetsa kutsika kwa mtsinje, osati kusungunula kokha.

Green Synergy ndi Kuchita bwino kwazinthu

Kupanga zitsulo zobiriwira zenizeni ndi za malingaliro ozungulira. Kodi CaSi imagwirizana bwanji? Choyamba, kuthandizira kugwiritsa ntchito ndalama zotsika mtengo kwambiri. Chitsulo ndiye gwero lachitsulo chobiriwira, koma ndi chonyansa. Chithandizo cha calcium chogwira ntchito ndi choyeretsa chomwe chimapangitsa kuti zinyalalazo zikhale zogwira ntchito pazinthu zapamwamba. Chachiwiri, munjira ngati hydrogen-based direct reduction (DRI/HBI kusungunuka), gwero lachitsulo ndi loyera kwambiri koma lotsika mu silicon. Silicon mu CaSi ikhoza kukhala gawo lothandizira pano, osati chonyamulira, chothandizira kugunda chandamale cha silicon popanda kuwonjezera kwa FeSi. Ndizochitika za mbalame ziwiri-mwala umodzi.

Palinso mbali ya slag. Kuchita bwino kwa CaSi kumachepetsa kufunikira kowonjezera laimu wochulukirapo pochotsa sulfurization. Kuchepa kwa slag kumatanthauza mphamvu yocheperako kuti itenthetse, kutsika pang'ono, kugwiritsa ntchito slag kutsika. Ndi kachingwe kakang'ono muzomera zonse, koma timizere tating'onoting'ono timawonjezera. Ndikukumbukira pulojekiti yomwe ikufuna kuchepetsa kutulutsa kwa slag pa tani yachitsulo. Kukonzekera kwa calcium silicon Kuwonjezera mfundo ndi mlingo, molumikizana ndi kupanga slag mchitidwe, kudula ladle slag ndi pafupifupi 8%. Ndiko kutaya pang'ono kutayira pansi kapena kukonza.

Kugwiritsa ntchito kwachitsulo kwa ductile iron castings, komwe Xinxin akulemba, ndi chilengedwe chofananira koma ndi mfundo yomweyo. Kugwiritsira ntchito CaSi-based nodlizers (ndi magnesium) muzitsulo ndi njira ina yogwiritsira ntchito chuma-kusintha chitsulo choyambira kukhala chochita bwino kwambiri, nthawi zambiri chopepuka, chomwe chimakhala kupambana kosatha mu magalimoto kapena zomangamanga. Ukatswiri wopanga ma aloyi osasinthika, oyera kwambiri pakugwiritsa ntchito kofunikiraku kumatanthauzira mwachindunji kudalirika kofunikira pakupanga zitsulo.

Kuyang'ana M'tsogolo: Osati Chipolopolo cha Siliva, Koma Chothandizira Kwambiri

Kodi calcium silicon idzakhala m'mawu osindikizira a chomera chotsatira chazitsulo za zero-carbon? Zokayikitsa. Koma kodi zidzakhala muzochita zogwirira ntchito zamafakitale? Mwamtheradi. Pamene njira zopangira zitsulo zimasiyanasiyana - EAF yambiri, DRI yambiri, njira zosakanizidwa zambiri - kufunikira kwazitsulo zolondola, zodalirika, komanso zogwira mtima zidzangokulirakulira. Calcium silicon amakhala pakati pomwe pa izo.

Zomwe zikuchitika m'tsogolo zomwe ndikuwona ndi mawaya okutidwa kapena ma aloyi ophatikizika omwe amapititsa patsogolo zokolola komanso kuchepetsa utsi. Mwina ma aloyi opangira zosakaniza zinazake. Chemistry yoyambira sidzasintha, koma kubweretsa ndi kusasinthika kudzakhala kokulirapo. Opanga omwe amagulitsa kusasinthika kumeneku, monga omwe ali ndi mizere yophatikizika yoyeserera ndi kuyesa, ndi omwe mphero amadalira.

Chifukwa chake, kukulunga izi: ngati mukupanga mapu opangira zitsulo zobiriwira, musamangoyang'ana gwero lamphamvu ndi chowongolera. Yang'anani pabokosi lazida lomwe limapangitsa kuti chinthu chomaliza chigwire ntchito. Calcium silicon ndi wrench yowonongeka, yodalirika m'bokosi limenelo. Sizosangalatsa mpaka mutazifuna, ndiyeno khalidwe lake limatsimikizira ngati ndondomeko yanu yobiriwira yobiriwira imapanga sellable, zitsulo zamtengo wapatali. Ndiwothandizira osayambidwa, ndipo udindo wake ukungowonjezereka pamene makampani akuyeretsa ntchito zake.