I-silicon ye-calcium kwi-steelmaking eluhlaza? 

Uva ukwenziwa kwentsimbi eluhlaza kwaye ngoko nangoko ucinge nge-hydrogen, i-arc furnaces yombane, i-scrap recycling. Kunene? Leyo yinto enkulu yemifanekiso. Kodwa ezantsi kwi-ladle, kwi-tweaking ye-chemistry yokunyibilika kokugqibela, kukho ukuzola, okuhlala kuqondwa kakubi: i-silicon ye-calcium. Ayithandeki. Yi-deoxidizer, i-desulfurizer. Kodwa indima yayo kwinguqu eluhlaza ingaphezulu malunga nokuvumela ukusebenza kakuhle kunye nomgangatho kwiinkqubo ezintsha, ezincinci ze-carbon-intensive kunokuba zibe ngumsebenzi wentloko ngokwawo. Ukungaqondi kakuhle kukuphatha njengolunye nje ukongeza kwe-alloy. Enyanisweni, ukusebenza kwayo kuchaza indlela ecoceke ngayo intsimbi yakho, indlela i-caster yakho eqhuba ngayo, kwaye ekugqibeleni, singakanani isivuno osifumanayo kwixabiso eliphantsi, eliphantsi kwekhabhoni yentsimbi okanye intlawulo ye-scrap. Yenza impazamo, kwaye amabhongo akho aluhlaza avaleleke ngokuvaleka kwemibhobho kunye nokubandakanywa kwe-off-spec.

I-Core Mechanism: Ngakumbi kune-Deoxidation nje

Wonke umntu uyazi ukuba i-CaSi yeyokukhupha i-deoxidation. Uyiphosa ngaphakathi, ibamba ioksijini kunye nesulfure, yenza i-slag edadayo. Incwadi yokufunda. Kodwa i-nuance-inxalenye oyifundayo kuphela xa ujonge ingxelo yohlalutyo lokubandakanya-imalunga nohlobo olubandakanyiweyo oludala. Unyango lwe-calcium ecocekileyo lunokuba luqili; iyaguquguquka, imveliso yayo ayihambelani. I-silicon ye-calcium, kunye nesilicon esebenza njengomphathi kunye nokumodareyitha ukusabela, ikunika ukukhululwa okulawulekayo. Injongo ayikona nje ukususa i-O kunye ne-S, kuku-morph nayiphi na i-alumina eseleyo (i-Al2O3) i-stringers ibe yi-aluminates ye-calcium engamanzi. Oku kubandakanywa kweglobula kuthambile, akubambi umlomo wakho wokungena emanzini, akubangeli ukuqhekeka kumgca obhityileyo ophezulu. Kulapho ikhonkco eliluhlaza liqala khona: ukuphosa okugudileyo kuthetha ukuqhawuka okuncinci, inkunkuma encinci, amandla amancinci achithwayo aphinda anyibilike.

Ndikhumbula ulingo kwindawo yokusila ukuya kumlinganiselo ophezulu we-scrap kwi-EAF yabo-intshukumo eluhlaza eluhlaza. I-scrap eninzi ithetha izinto ezininzi ze-tramp, iintsalela eziguquguqukayo. Ukusebenza kwabo okukhoyo kunye ne-deoxidizer esisiseko kwakhokelela ekuvaleni okubi kwi-tundish. Sitshintshele kwibakala elithile le-CaSi kunye ne-Ca / Si eqinile kunye noluhlu lwesayizi ye-particle elawulwayo (cinga i-10-30mm, kungekhona i-powder). Isiphumo esikhawulezileyo yayingeyiyo nje intsimbi ecocekileyo nge-spec, yayiyinduna eqaphela ukuba baqhube ulandelelwano lwezifudumezi ezintathu ixesha elide ngaphandle kotshintsho lombhobho. Oko kuyabambeka. Eli lixesha elincinci lokuphumla, inkunkuma enqabileyo encinci, iitoni ezininzi ngeyure nganye. Ixabiso le-alloy laliphezulu, kodwa ugcino lokusebenza luyikhuphe emanzini.

Indlela yokusilela apha ithatha ukuba yonke iCaSi iyafana. Umthengisi onje Inner Mongolia Xinxin Silicon Industry Co.,Ltd. (ungajonga uluhlu lweemveliso zabo apha https://www.xinxinsilicon.com) iya kudwelisa iinkcukacha ezifana neCa28-Si60 okanye iCa30-Si58. Loo mahluko ambalwa eepesenti kumxholo we-calcium, amanqanaba omkhondo we-aluminiyam, i-barium, okanye umhlaba onqabileyo abanokuthi badibanise kuwo-ibaluleke kakhulu. Ukusebenzisa ibakala le-calcium ephantsi kumsebenzi onzulu we-desulfurization yinkcitho yemali kunye nexesha. Ugqiba ukongeza ngakumbi, okwandisa i-silicon pickup, okunokuthi ulahle ikhemistri yakho yokugqibela. Sisenzo sokulungelelanisa esifundwe kumanyathelo angafanelekanga.

Imingeni esebenzayo kwiSicelo

Ngoko ke ukhethe ibakala elifanelekileyo. Ngoku, ungena njani kwinyibiliko? Isitofu socingo ngumgangatho wegolide wesivuno kunye nokuveliswa kwakhona. Ungayimitha ngokuchanekileyo kwileyidi kubunzulu obuchanekileyo. Kodwa i-fire feeder ziyinkunzi, kwaye ucingo olune-cored ngokwalo luyindleko eyongezelelweyo. Ezinye iivenkile ezincinci, ngakumbi kwiimarike ezisakhasayo, zisabhenela ekongezeni ingxowa-ziphosa iibhegi ezitywiniweyo kwi-ladle ngexesha lokucofa. Ingxaki? Ufumana ukugqabhuka okumangalisayo, okuyilahleko komphunga wecalcium, ukusasazwa okungaguquguqukiyo, kunye nesivuno esinokujinga ukusuka kwi-15% ukuya kwi-40%. Ndibone ukushisa apho uninzi lwe-calcium lutshise nje kwinkqubo yokutsalwa komphunga. Akukho luhlaza, akukho qoqosho.

Ukuhamba kwexesha yenye into yokuziva. Yongeza kwangethuba, xa umsebenzi weoksijini usephezulu, kwaye i-calcium ityiwa kwi-slag-metal reaction. Yongeza emva kwexesha, xa iqondo lokushisa liyehla, kwaye ukufakwa akunalo ixesha lokudada. Indawo emnandi ihlala ngexesha le-argon ethambileyo, emva kokuba i-deoxidation yokuqala ibethe i-oksijini eninzi phantsi kodwa ngaphambi kokuba intsimbi iye kwi-caster. Ngokusisiseko uhlamba i-melt. Ukufumana oku kungalunganga kuthetha oko kubandakanywa lulwelo osebenzele ukulwenza musani ukwahlula; bavaleleka kumsonto oqiniswayo, babe ziziphene.

Emva koko kukho ukuhambelana kwezinto eziluhlaza. Ibhetshi yeCaSi enomswakama ophezulu okanye ubungakanani be-off-spec inokuba yintlekele. Ubumanzi bukhokelela kwi-pickup ye-hydrogen, i-porosity. Ubungakanani be-off-spec (izohlwayo ezininzi kakhulu) bukhokelela ekupheliseni ngokukhawuleza kunye nokusabela okungalawulekiyo. Sakhe sathunyelwa apho ibhegi ikwimeko embi, kwaye ialloyi yayineoxidized ngokuyinxenye ngexesha lokuhamba. Isivuno sawohloka, kwaye ukuguqulwa kwesalfure kubushushu obulandelayo kwaba liphupha elibi. Igxininisa ukuba kutheni ukusebenzisana nomvelisi onenkqubo eqinileyo kubalulekile. I-Xinxin Silicon ikhankanya inkqubo yolawulo olugqibeleleyo kunye nenkqubo yokuqinisekisa umgangatho kunye neseti epheleleyo yezixhobo zokuvavanya ngokuchanekileyo akukhona nje ukuthengisa i-fluff-yinto ethintela ezi ntloko zentsimi. Imigca yabo yemveliso ye i-silicon ye-calcium, i-cored wire, kunye nama-noduzers acebisa ukuba baqonde isicelo esisezantsi, kungekhona nje ukunyibilika.

I-Green Synergy kunye nokuSebenza ngokuSebenzayo kwezinto

I-steelmaking yokwenyani eluhlaza imalunga nengqondo ejikelezayo. Ingena njani iCaSi? Okokuqala, ngokuvumela ukusetyenziswa kweentlawulo eziphezulu ze-scrap. I-Scrap ngowona mthombo wentsimbi eluhlaza, kodwa imdaka. Unyango olusebenzayo lwe-calcium luyi-arhente yokucoca eyenza ukuba eso silahlwa sisebenze kwiimveliso zodidi oluphezulu. Okwesibini, kwiinkqubo ezifana ne-hydrogen-based based reduction (DRI / HBI melting), umthombo wentsimbi ucocekile kakhulu kodwa uphantsi kwi-silicon. I-silicon ekwi-CaSi inokuba yinto eluncedo yokudibanisa apha, hayi nje umthwali, inceda ekubetheni i-silicon specs ngaphandle kodibaniso olwahlukileyo lwe-FeSi. Yimeko yeentaka ezimbini-ilitye elinye.

Kukho kwakhona icala le-slag. Ukusebenza kakuhle kweCaSi kunciphisa imfuno yokongezwa kwekalika ngokugqithisileyo ekususeni isalfurization. Umthamo omncinci we-slag uthetha amandla amancinci okuwufudumeza, ukusetyenziswa okuncinci kwe-flux, ukuphathwa kwe-slag ngaphantsi komlambo. Yilever encinci kuyo yonke ibhalansi yobunzima besityalo, kodwa ezi zixhobo zincinci zongeza. Ndikhumbula iprojekthi ejolise ekunciphiseni imveliso ye-slag ethile ngetoni yentsimbi. Ukuphucula i i-silicon ye-calcium Inqaku lokongezelela kunye nesantya, ngokubambisana nesenzo sokwenziwa kwe-slag, ukusika i-ladle slag malunga ne-8%. Leyo yinkcitho encinci yokulahla inkunkuma okanye inkqubo.

Ukusetyenziswa kwe-nodulizing ye-ductile iron castings, edweliswa nguXinxin, yindalo iphela ehambelanayo kodwa inomgaqo ofanayo. Ukusebenzisa i-CaSi-based nodlizers (kunye ne-magnesium) kwi-Foundry enye indlela yokusebenza kwezinto eziphathekayo-ukuguqula isinyithi esisisiseko kwintsebenzo ephezulu, ehlala ilula, eyona nto iyimpumelelo yokuphumelela kwiimoto okanye kwiziseko ezingundoqo. Ubuchwephesha ekuveliseni i-alloys ehambelanayo, ecocekileyo kakhulu kwesi sicelo esifunayo siguqulela ngokuthe ngqo ukuthembeka okufunekayo kwi-steelmaking.

Ukujonga Phambili: Hayi iBullet yeSilver, kodwa isiXhobo esibalulekileyo

Ngaba i-silicon ye-calcium iya kuba kushicilelo lwesityalo esilandelayo se-zero-carbon steel? Akunakwenzeka. Kodwa ngaba iya kuba kwiinkqubo zokusebenza eziqhelekileyo zesityalo? Ngokuqinisekileyo. Njengoko iindlela zokwenza intsimbi ziyahlukahlukana-ngakumbi i-EAF, i-DRI eyongezelelekileyo, iinkqubo ezininzi ezixubeneyo-imfuno yesinyithi echanekileyo, ethembekileyo, kunye nesebenzayo yesibini iya kukhula kuphela. I-silicon ye-calcium ihlala kanye esiphakathini sayo.

Uphuhliso lwexesha elizayo endilujongileyo lukwiingcingo ezigqunyiweyo okanye iialloyi ezidityanisiweyo eziphucula ngakumbi isivuno kunye nokunciphisa umsi. Mhlawumbi ii-alloys ezenzelwe imixube ye-scrap ethile. I-chemistry eyisiseko ayiyi kutshintsha, kodwa ukuhanjiswa kunye nokuhambelana kuya kuba bukhali. Abavelisi abatyala imali kuloo nto ihambelanayo, njengabo banemigca yokucwangcisa ehlanganisiweyo kunye nokuvavanya, baya kuba ngabo oomatshini abaxhomekeke kubo.

Ke, ukusonga le ramble up: ukuba ucwangcisa isicwangciso sokwenza intsimbi eluhlaza, musa ukujonga nje umthombo wamandla kunye ne-reactor. Jonga kwibhokisi yesixhobo eyenza ukuba imveliso yokugqibela isebenze. I-silicon ye-calcium sisitshixo esigugileyo, esithembekileyo kuloo bhokisi. Ayinamdla ude uyifune, kwaye ke umgangatho wayo umisela ukuba inkqubo yakho entle eluhlaza ngokwenene ivelisa intsimbi ethengiswayo, ekumgangatho ophezulu. Yinto eyenza kube lula, kwaye indima yayo iya ibaluleka ngakumbi njengoko ishishini licoca isenzo salo.