Calcium silicon mune green steelmaking? 

Iwe unonzwa kugadzirwa kwegirini uye wobva wafunga hydrogen, magetsi arc furnaces, zvimedu zvekudzokorora. Rudyi? Ndizvo zvinhu zvikuru zvemufananidzo. Asi pazasi mune ladle, mukugadzirisa kwekupedzisira kunyunguduka chemistry, kune yakanyarara, kazhinji isinganzwisisike workhorse: calcium nesilicon. Hazvinakidzi. Iyo deoxidizer, desulfurizer. Asi basa rayo mukushanduka kwegirinhi riri pamusoro pekugonesa kushanda zvakanaka uye hunhu mune nyowani, shoma kabhoni-yakanyanya maitiro pane kuve musoro wenyaya pachawo. Iko kusanzwisisa kuri kuiona seimwe imwe alloy yekuwedzera. Muchokwadi, kuita kwayo kunoratidza kuchena kwesimbi yako, kuti caster yako inomhanya sei, uye pakupedzisira, yakawanda sei goho raunowana kubva kune yako inodhura, yakaderera-kabhoni primary simbi kana chakaraswa charge. Ita zvisizvo, uye zvishuvo zvako zvegirinhi zvinovharika nekuvhara kwenozzle uye off-spec inclusions.

Iyo Core Mechanism: Kupfuura Kungoita Deoxidation

Wese munhu anoziva CaSi ndeye deoxidation. Iwe unoikanda mukati, inobata oksijeni nesarufa, inoumba slag inoyerera. Textbook. Asi iyo nuance-iyo chikamu chaunongodzidza kana iwe uchinge watarisa kune inosanganisirwa yekuongorora rondedzero-iri pamusoro pemhando yekubatanidzwa iyo inogadzira. Kurapa kwekarusiyamu kwakachena kunogona kuva kunonyengera; inoshanduka, goho rayo haripindirani. Calcium silicon, nesilicon ichiita semutakuri uye kuenzanisa maitiro, inokupa iwe unodzoreka kusunungurwa. Chinangwa hachisi chekungobvisa O uye S, ndeye morph chero yasara alumina (Al2O3) tambo kuita mvura calcium aluminates. Aya ma globular inclusions akapfava, haabvise muromo wako wekupinda mumvura, haakonzeri kuputika kwemutsetse wakatetepa wakasimba. Ipapo ndipo panotangira girinhi link: kukanda kwakadzikama kunoreva kushoma kuputika, zvishoma zvimedu, simba shoma rakaraswa zvakare-kunyunguduka-kubvisa.

Ndinorangarira muyedzo paguyo uchienda kune yakakwira zvimedu reshiyo muEAF yavo-yemhando yegirinhi kufamba. Zvimwe zvimedu zvinoreva zvimwe zvinhu zvekutsika, zvakasara zvakasiyana. Tsika yavo iripo ine deoxidizer yakakosha yakatungamira kuvharika kunotyisa pa tundish. Isu takachinjira kune chaiyo giredhi reCaSi ine yakaomesesa Ca / Si chiyero uye inodzorwa particle size renji (funga 10-30mm, kwete hupfu). Mhedzisiro yacho yaisangova simbi yakachena chete, aive foromani achiona kuti vaimhanyisa kutevedzana kwehutatu hurefu pasina shanduko yemuromo. Ndizvo zvinobatika. Ndiyo nguva shoma yekudzikira, marara mashoma, matani akawanda paawa-paawa. Mutengo wealloy wakakwira, asi mari yekushanda yakaiburitsa mumvura.

Iyo yekukundikana modhi pano iri kufunga kuti CaSi yese yakafanana. Mutengesi akafanana Inner Mongolia Xinxin Silicon Industry Co., Ltd. (unogona kutarisa chigadzirwa chavo pa https://www.xinxinsilicon.com) ichanyora zvinyorwa seCa28-Si60 kana Ca30-Si58. Iwo mashoma muzana akasiyana muhuwandu hwecalcium, iyo inoteedzera mazinga ealuminium, barium, kana kunyange isingawanzo pasi pasi yavanogona kusanganisa-zvine basa zvakanyanya. Kushandisa giredhi yakaderera-calcium yebasa rakadzika desulfurization kutambisa mari uye nguva. Iwe unopedzisira wawedzera zvimwe, izvo zvinowedzera silicon pickup, zvinogona kukanda kunze chemistry yako yekupedzisira. Icho chiito chekuenzanisa chakadzidzwa kubva mukukanganisa.

Matambudziko Anoshanda Mukushandisa

Saka wakasarudza giredhi rakakodzera. Zvino, unozvipinza sei mukunyungudika? Jekiseni rewaya ndiyo chiyero chegoridhe chegoho uye kuberekazve. Iwe unogona kunyatsoita mita iyo muladhi pakadzika kwekurudyi. Asi waya anodyisa i capital, uye iyo cored waya pachayo inodhura. Zvimwe zvitoro zvidiki, kunyanya mumisika ichiri kusimukira, zvichiri kushandisa mabhegi ekuwedzera-kukanda mabhegi akavharirwa muladle panguva yekubaya. Dambudziko? Iwe unowana kunoshamisa, kupambadza flare-up ye calcium mhute, kupararira kusingaenderane, uye goho rinogona kusvetuka kubva pa15% kusvika 40%. Ndakaona kupisa uko yakawanda yecalcium ichangobva kutsva mumhepo yekubvisa utsi. Kwete girini, kwete mari.

Kutora nguva ndechimwe chinhu chekunzwa. Wedzera kare-kare, kana okisijeni ichiri yakakwira, uye iyo calcium inopedzwa mune inotyisa slag-metal reaction. Wedzera kunonoka, kana tembiricha iri kudonha, uye inclusions haina nguva yekuyangarara kunze. Nzvimbo inotapira kazhinji panguva yekunyorovesa argon, mushure mekutanga deoxidation yakadonhedza iyo okisijeni yakawanda pasi asi simbi isati yaenda kune caster. Iwe uri kunyanya kugeza kunyunguduka. Kuita izvi zvisiri izvo zvinoreva izvo zvinosanganisirwa zvemvura zvawakashanda kugadzira hazviparadzanise; vanobatwa mumusungo unoomesa, vachiva kuremara.

Zvadaro pane kuwirirana kwezvinhu zvakasvibiswa. Batch yeCaSi ine hunyoro hwepamusoro kana kure-spec size inogona kuve njodzi. Hunyoro hunotungamira kune hydrogen pickup, porosity. Off-spec saizi (yakawandisa faindi) inotungamira mukuparara nekukurumidza uye kusadzora kuita. Takambove nekutakura uko mabhegi aive asina kunaka, uye alloy yakanga yave neoxidized panguva yekufamba. Goho rakadzikira, uye kudzoreredzwa kwesarufa mukupisa kwaitevera kwaityisa. Inosimbisa kuti sei kubatana nemugadziri ane yakasimba system zvine basa. Xinxin Silicon's kutaurwa kweakakwana manejimendi sisitimu uye yemhando yekusimbisa sisitimu uye yakazara seti yechaiyo yekuyedza michina haisi yekungoshambadza fluff-ndiyo inodzivirira idzi misoro yemunda. Mitsetse yavo yezvigadzirwa zve calcium nesilicon, cored wire, uye nodulazers anoratidza kuti vanonzwisisa kudzika kwemvura application, kwete kunyungudika chete.

Iyo Green Synergy uye Kushanda Kwezvinhu

True green steelmaking ndeye denderedzwa mindset. CaSi inokodzera sei? Kutanga, nekugonesa kushandiswa kwepamusoro pezvikara mhosva. Zvimedu ndiyo yekupedzisira girinhi simbi sosi, asi ine tsvina. Kushanda calcium kurapwa inhengo yekuchenesa inoita kuti zvimedu zvishande kune zvigadzirwa zvepamusoro-giredhi. Chechipiri, mumatanho akaita sehydrogen-based direct reduction (DRI/HBI kunyunguduka), iyo iron sosi yakachena asi yakaderera musilicon. Iyo silicon muCaSi inogona kuve inobatsira alloying chikamu pano, kwete chete mutakuri, kubatsira kurova chinangwa silicon specs pasina yakaparadzana FeSi yekuwedzera. Ndiyo shiri mbiri-imwe-dombo mamiriro.

Kune zvakare chikamu che slag. Yakanaka CaSi tsika inoderedza kudiwa kwekuwedzera lime yekuwedzera ye desulfurization. Ishoma slag vhoriyamu inoreva kushoma simba rekuipisa, kushoma kuyerera kwekushandisa, kushoma slag kubata kuzasi. Iyo diki lever mune yese chirimwa misa chiyero, asi aya madiki marevheti anowedzera. Ini ndinorangarira chirongwa chine chinangwa chekudzikisa chaiyo kugadzirwa kwesimbi patani yesimbi. Optimizing the calcium nesilicon yekuwedzera poindi uye chiyero, pamwe chete neyakagadzirwa slag tsika, cheka ladle slag neinosvika 8%. Iyo ishoma tsvina yekurasira pasi kana kugadzirisa.

Iyo inogonesa application ye ductile iron castings, iyo Xinxin inonyora, idenga rakafanana asi rine musimboti mumwechete. Kushandisa CaSi-based nodlizers (ine magnesium) mune yakawanikwa ndiyo imwe nzira yekubudirira kwezvinhu-kushandura simbi yakakosha kuita yakakwirira-inoshanda, kazhinji inoreruka-huremu zvinhu, inova inosimudzira kukunda mumotokari kana zvivakwa. Hunyanzvi mukugadzira anowirirana, akanyanya-kuchena alloys echishandiso ichi chinoda kududzira zvakananga kukuvimbika kunodiwa mukugadzira simbi.

Kutarisa Mberi: Kwete Sirivha Bullet, Asi Yakakosha Inogonesa

Ko calcium silicon ichave mukuburitswa kwenhau kune inotevera zero-carbon simbi chirimwa? Hazvigoneki. Asi ichave iri mumagadziro ekushanda kwechirimwa here? Zvamazvirokwazvo. Sezvo nzira dzekugadzira simbi dzinosiyana-yakawanda EAF, yakawanda DRI, yakawanda hybrid maitiro - kudiwa kweiyo chaiyo, yakavimbika, uye inoshanda simbi simbi inongokura. Calcium silicon anogara pakati chaipo pazvo.

Zviitiko zveramangwana zvandiri kuona zviri muwaya dzakavharwa kana maaroyi akaumbwa anowedzera kuwedzera goho uye kuderedza utsi. Pamwe alloys akagadzirirwa chaiwo masanganiswa ezvirasha. Iyo yekutanga chemistry haishanduke, asi kuburitsa uye kuenderana kuchawedzera kupinza. Vagadziri vanodyara mukuenderana ikoko, sevaya vane yakasanganiswa yekugadzirisa uye mitsara yekuyedza, ndivo vanozotsamira pazvigayo.

Saka, kuputira iyi ramble kumusoro: kana iwe uchigadzira yakasvibira kugadzira simbi, usangotarisa kune simba sosi uye reactor. Tarisa pabhokisi rematurusi rinoita kuti chigadzirwa chekupedzisira chishande. Calcium silicon chipanera chakasakara, chakavimbika mubhokisi iroro. Hazvinakidze kudzamara wazvida, uye ipapo mhando yayo inotaridza kana yako yakasvibira maitiro achinyatso gadzira inotengeswa, yemhando yepamusoro simbi. Ndiyo inogonesa isina kuvhurika, uye basa rayo riri kuramba richinyanya kukosha sezvo indasitiri inochenesa kuita kwayo.