"Alkali" da "Magnesium" don haɓaka aikin pellet

Pellets mai ƙyalƙyali suna da ƙarfin ƙarfin injiniya da kaddarorin ƙarfe, kuma sun zama cajin mara inganci mai mahimmanci don ƙera tanderu. Koyaya, rashin wadatattun abubuwan tattarawar magnetite na cikin gida ya sa yawancin tsire -tsire na ƙarfe na cikin gida suna amfani da hematite da aka shigo da su don samar da pellets oxide. Idan aka kwatanta da magnetite pellets, hematite pellets suna da babban gasasshen zafin jiki da kuma kunkuntar kewayon (1300 ℃ ~ 1350 ℃), kuma pellets suna da ƙananan matsawa ƙarfi. Bugu da ƙari, ƙwayoyin hematite acidic suna da kaddarorin ƙarfe mara kyau. Daga cikin su, specularite yana cikin muhimmin nau'in hematite, kuma aikin gasa da kayan aikin ƙarfe na pellets sun fi na talakawa hematite.

　　 Masu bincike sun gudanar da bincike da yawa kan yadda ake amfani da hematite don samar da pellets mai ƙarfi mai ƙarfi. Nazarin ya nuna cewa ƙara magnetite zuwa hematite don shirya ƙwanƙwasa ƙwanƙwasawa na iya rage zafin zafin zafin preheating da haɓaka ƙarfin matsi na ƙoshin gasasshen ƙoshin; kara kwarara don samar da kwararar hematite mai kwarara shima mafita ne.

Shuke-shuken pellet na cikin gida gabaɗaya suna amfani da hematite da magnetite don samar da pellets masu ƙarfi, amma yayin da adadin hematite ke ƙaruwa, tasirin ƙara magnetite yana da rauni ƙwarai. Ƙara kwararar CaO don samar da pellets mai jujjuyawa na iya samun ƙarfin injin mafi girma da mafi kyawun raguwa a ƙananan zafin jiki, amma babban aikin zazzabi mai zafi ba shi da kyau kuma raguwar raguwa yana da mahimmanci. Karatun farko ya nuna cewa ƙara MgO a cikin pellets na iya rage ƙimar faɗaɗawar raguwa da haɓaka aikin haɓaka zafin jiki mai zafi.

A halin yanzu, akwai ƙarancin rahotanni kan tasirin alkalinity da abun ciki na MgO akan ƙarfi da kaddarorin ƙarfe na ƙyallen ƙwaya, musamman tasirin alkalinity da MgO akan kaddarorin ƙarfe na pellets. Don haka, wannan labarin yana nazarin tasirin alkalinity da abun ciki na MgO akan ƙarfi da kaddarorin ƙarfe na pellets na musamman yana da ƙima mai mahimmanci don inganta ƙoshin ƙwanƙwasawa da ƙarfafa ƙarfe murhun ƙarfe.

　　Kayayyakin kayan albarkatu da hanyoyin bincike

　　 Abubuwan da aka yi amfani da su a cikin wannan gwajin sune ƙwararrun ƙwararrun Brazil, bentonite, limestone da magnesite. Saboda ƙwaƙƙwaran ƙirar Brazil, farar ƙasa, da magnesite ba su da ƙima a cikin girman barbashi, suna ƙasa zuwa girman barbashi da takamaiman yankin da ake buƙata don samar da pellet tare da injin ƙwal a cikin dakin gwaje -gwaje. Spiegelite yana da babban ƙarfe, ƙaramin ma'adanai na gangue da sauran ƙazantattun abubuwa masu cutarwa, kuma ingantaccen kayan ƙwari ne. Dutse da magnesite suna da ƙarancin abun ciki na SiO2 da fewan wasu ƙazanta masu cutarwa. Su ne madaidaicin alli-magnesium fluxes.

Maƙallan da aka yi amfani da shi a cikin gwajin shine bentonite na tushen sodium mai inganci, kuma alamun sune kamar haka: abun cikin montmorillonite shine 92.76%, ƙarar kumburin shine 20mL/g, ƙimar ruwan cikin awanni 2 shine 342%, kuma abun ciki na -0.074mm ya kai 100%.

Binciken gwaji ya haɗa da tsarin yin batching, haɗawa, shirye -shiryen ƙwallon kore, bushewar ƙwallon ƙura, busasshen ƙoshin ƙoshin ƙoshin ƙoshin ƙoshin ƙoshin ƙwanƙwasawa. Ana sarrafa abun cikin SiO2 na pellets da aka gama a 3.0% ～ 3.1% ta ƙara ƙaramin yashi mai ƙyalli. Ana daidaita alkalinity da abun ciki na MgO na pellets da aka gama ta ƙara limestone da magnesite, da tasirin canje-canje a cikin alkalinity da abun ciki na MgO akan ƙarfin matsawa, matakin ragewa, raguwar raguwa, rage yawan zafin jiki da rage zafi da taushi. Ana bincika halayen gasasshen kwayayen. Tasiri.

　　 Sakamakon gwaji da nazarin tasiri

"Sakamakon alkalinity da abun ciki na MgO akan ƙarfin matsawa da porosity." Ƙarfin matsi na pellets alama ce mai mahimmanci wanda ke nuna matsin lambar da pellets za su iya jurewa yayin jigilar kayayyaki da adanawa da kuma a cikin ragin rage wuta. Manyan murhun wuta suna buƙatar ƙarfin matsi na pellets ya zama sama da 2500 N/yanki.

A ƙarƙashin abun ciki na MgO na halitta, ƙarfin damfara na pellets yana ƙaruwa da ƙaruwa a cikin alkalinity. Lokacin da alkalinity ya ƙaru zuwa 0.2, ƙarfin matsi na pellets yana ƙaruwa daga 2400 N/yanki na alkalinity na halitta zuwa 3,500 N/yanki; Bayan kai 0.4, ƙarfin damfara na pellets baya ƙaruwa. Wannan saboda haɓaka alkalinity na CaO, Fe2O3 da SiO2, kamar alli ferrite da alli silicate. Lokaci mai dacewa na ruwa yana dacewa da sake jujjuyawar hematite, amma lokacin ruwa mai yawa ba ya dace da haɓaka ƙarfin matsi na pellets. A ƙarƙashin alkalinity na halitta, ƙarfin matsi na pellets yana raguwa tare da haɓaka abun cikin MgO. Wannan saboda magnesite yana ruɓewa yayin preheating da gasa pellets, wanda ke haɓaka porosity na pellets.

Lokacin alkalinity da MgO suna aiki tare, a ƙarƙashin abun ciki na MgO iri ɗaya, tasirin alkalinity akan ƙarfin matsi na pellets calcined daidai yake da tasirin alkalinity akan ƙarfin matsi na pellets ƙarƙashin abun ciki na MgO na halitta, wato, da compressive ƙarfi na pellets. Ƙarfin da farko yana ƙaruwa tare da ƙaruwar alkalinity. Bayan alkalinity ya kai wani ƙima, ƙarfin damfara na pellets baya ƙaruwa sosai; a ƙarƙashin alkalinity iri ɗaya, ƙarfin matsi na pellets yana raguwa tare da haɓaka abun ciki na MgO, wanda ya kasance saboda abun ciki na MgO Yayin karuwa, porosity na pellets yana ƙaruwa, kuma a lokaci guda MgO yana shiga cikin yanayin slag don haɓaka narkar da ma'adanai na gangue, wanda ke da takamaiman tasiri kan samuwar lokacin ruwa. Sakamakon gwajin ya nuna cewa lokacin da alkalinity ya wuce 0.2, ƙarfin damfara na pellets na musamman tare da alkalinity daban -daban da abun ciki na MgO na iya kaiwa sama da 2500 N/yanki.

Yayin da adadin juzu'in ke ƙaruwa, pores ɗin da bazuwar juzu'i ke barin yayin ƙoshin preheating shima yana ƙaruwa. Ƙarin juyi ba kawai yana shafar abun da ke cikin sinadarai da abubuwan ma'adinai na pellets ba, har ma yana shafar tsari da porosity na pellets. Wannan zai shafi ƙarfin damfara da kaddarorin ƙarfe na pellets har zuwa wani matsayi.

　　Sakamakon alkalinity da abun cikin MgO akan matakin ragewa. Matsayin raguwa (RI) alama ce mai mahimmanci don kimanta ɗabi'a da wahalar cire iskar oxygen daga baƙin ƙarfe a ƙarƙashin yanayin zafin jiki da yanayi a yankin raguwar tanderun fashewar. Abubuwan da ke shafar ragin ƙarfe na baƙin ƙarfe sun haɗa da girman barbashi, porosity, abun da ke cikin ma'adinai da tsari, da haɗarin ma'adinai na gangue.

Matsayin raguwa na pellets acidic tare da alkalinity na halitta da abun cikin MgO na ƙasa yana da ƙasa, kawai 62.22%. Tare da haɓaka abun ciki na MgO, matakin raguwa yana ƙaruwa. Lokacin da abun ciki na MgO ya kasance 3.0%, raguwar matakin pellets na iya kaiwa 68%; Lokacin da abun ciki na MgO yana ƙaruwa alkalinity, ana rage ƙimar digirin pellets na musamman. Lokacin da alkalinity ya ƙaru zuwa 1.2, matakin raguwar pellets ya tashi zuwa 72.82%. Wannan saboda ƙari na ƙaramin ƙarfe yana ƙaruwa porosity na pellets, kuma a lokaci guda, CaO yana amsawa tare da Fe2O3 don ƙirƙirar sauƙin alli ferrite.

Lokacin alkalinity da MgO suna aiki tare, a ƙarƙashin alkalinity iri ɗaya, matakin raguwar pellets mirrorite yana ƙaruwa tare da haɓaka abun cikin MgO; a ƙarƙashin abin MgO iri ɗaya, matakin raguwa yana ƙaruwa tare da haɓaka alkalinity.

Lokacin da alkalinity ya kai 1.2 kuma abun ciki na MgO yana ƙaruwa zuwa 3.0%, matakin raguwar pellets ya kai 76.94%. Wannan saboda magnesite kuma yana haɓaka porosity na pellets yayin preheating da soyayyen pellets, kuma MgO na iya haɓaka narkar da matakin slag da jikin mai iyo, don haka ba mai sauƙin narkewa yayin aikin ragewa, kuma pores na pellets ba su narke ba. An cika kayan don kula da babban porosity, wanda ke dacewa da watsa gas.

　　Sakamakon alkalinity da abun ciki na MgO akan haɓaka haɓaka.

A ƙarƙashin abun ciki na MgO na halitta, ragin faɗaɗa raguwar pellets na farko yana ƙaruwa sannan ya ragu, kuma alkalinity ya kai matsakaicin ƙima tsakanin 0.4 da 0.6, kuma matsakaicin ƙima ya kai 32%.

Wannan saboda ƙaramin sashi na CaO da aka ƙara a cikin pellets yana aiki tare da Fe2O3 don samar da alli ferrite, kuma mafi yawan sa yana shiga cikin yanayin slag. Lokacin da ba a rage shi ba, tsarin ɓarna ya mamaye tsarin binary na CaO-SiO2. Lokacin da alkalinity ke tsakanin 0.4 da 0.6, wato, abun cikin SiO2 a cikin matakin slag yana tsakanin 62.5% da 70%, wanda shine tazara na abun da ke cikin mahallin binary eutectic na sinadarin metasilicate na alli (CaOSiO2) da SiO2, da ƙarancinsa Matsayin eutectic zafin jiki shine 1436 ℃, amma a ƙarƙashin rage yanayi, wannan lokacin slag ya zama CaO-SiO2-FeO ternary slag system saboda ƙari na FeO. A cikin wannan tsarin slag, rabon CaO da SiO2 bai canza ba. Matsayin narkewa na lokacin slag yana ƙaruwa sosai tare da haɓaka abun ciki na FeO. A cikin madaidaicin tsarin slag, yana iya zama ƙasa da 1093 ℃, kuma ƙarancin lokacin narkar da slag zai lalata yanayin raguwa da fadada pellets.

A ƙarƙashin alkalinity na halitta, raguwar ƙimar fadada pellets yana raguwa kaɗan tare da haɓaka abun cikin MgO, amma ba a bayyane yake ba. Wannan shi ne saboda alkalinity na halitta da yanayin MgO pellet slag phase tare da narkar da 1700 ℃ lokacin da abun cikin SiO2 shine 90%. Tare da ƙari na MgO, tsarin ɓarna ya mamaye tsarin binary na MgO-SiO2, amma ƙarancin zafin eutectic shima yana da ƙarancin zafin eutectic. 1543 ° C. Lokacin alkalinity da MgO suna aiki tare, tasirin alkalinity akan raguwar ƙimar pellets daidai yake da abun cikin MgO na halitta a ƙarƙashin abun MgO iri ɗaya. Lokacin da aka ƙara MgO, ana narkar da maɗaurin lokacin ɓarna ta hanyar narkar da MgO a cikin ɓarna. A lokaci guda kuma, MgO yana ƙaruwa da maɗaurin lokacin ɓarna.

Sabili da haka, a ƙarƙashin alkalinity iri ɗaya, haɓaka abun cikin MgO na iya rage haɓaka raguwa.

　　 Haɓaka ƙarar hematite a cikin pellets mai ƙyalli ya rage zuwa magnetite da floatite. Wannan haɓaka yana faruwa ne ta hanyar canjin tsarin kristal lokacin da aka rage hematite zuwa magnetite. Rage faɗaɗa ƙarar pellets yana da alaƙa da ƙungiya gangue da iyawar matakin slag don tsayayya da damuwar da aka samu ta raguwar ƙwayoyin hematite.

Babban lokacin narkar da yanayin narkewa ba abu ne mai sauƙin narkewa ba yayin aiwatar da raguwa, kuma riƙe ƙarfi mai ƙarfi na iya iyakance raguwar faɗaɗa ƙarar pellets, yayin da ƙarancin lokacin narkar da shinge zai lalata ɓarkewar raguwar pellets.

　　 Rage faɗaɗa ƙimar pellets da ke ƙasa da 20% yana cikin kewayon faɗaɗa na yau da kullun, kuma yakamata a sarrafa alkalinity na pellets specularite a cikin kewayon ƙasa da 0.2 ko mafi girma ko daidai da 1.0.

Koyaya, a cikin samar da masana'antu gabaɗaya, ana buƙatar rage girman ƙarar pellets a ƙarƙashin 15%. Don pellets na musamman tare da alkalinity na halitta wanda ke ɗauke da 3.0%~ 3.1%SiO2, ƙimar fadada raguwa ƙasa da 15%, kuma matakin raguwa shine kawai 62.2%. Lokacin haɓaka digiri na raguwa ta hanyar haɓaka alkalinity, ya zama dole a rage alkalinity Kawai lokacin matakin haɓaka zuwa 1.0 da abun cikin MgO zuwa 3.0%, ko alkalinity zuwa 1.2 da abun cikin MgO ≥1.0%, na iya rage fadada ƙimar ya zama ƙasa da 15%.

　　Sakamakon alkalinity da abun ciki na MgO akan ƙarancin ƙarancin zafin jiki. Ƙananan ragin rage yawan zafin jiki (RDI) yana nuna ɗabi'ar pellets don samar da foda lokacin da aka rage su a saman tanderun fashewar wuta ko ragin murfin ragi kai tsaye a cikin zafin jiki na 400 ° C zuwa 600 ° C. Babban dalilin raguwar ƙarancin zafin jiki da jujjuyawar shine ƙarar girma da murdiyar lattice wanda ya haifar da juzu'in tsarin crystal lokacin da aka rage hematite zuwa magnetite.

Akwai manyan hanyoyin haɗin gwiwa guda uku waɗanda aka kirkira lokacin da pellets suka yi zafi da gasashe:

Iron oxide recrystallization, silicate bonding da ferrite bond.

Daga cikin su, haɗin hematite recrystallization shine mafi na kowa kuma mafi ƙarfi, amma hematite ba shi da ƙarfi sosai a ƙarƙashin rage yanayi, yayin da za a iya kiyaye lokacin haɗin silicate lokacin da aka rage hematite zuwa magnetite. Canji.

Don haka, yana yiwuwa a haɓaka wannan rarraba suttura kuma a kula da tsayayyen lokacin haɗin gwiwa a ƙarƙashin yanayin rage yawan zafin jiki ta hanyar ƙara juzu'i, ta yadda za a rage ƙarancin ƙarancin zafin jiki da jujjuyawar pellets.

Pellets tare da alkalinity na halitta da abubuwan MgO na halitta sune galibi haɓaka hematite mai ƙarfi, tare da ƙarancin lokacin ɗaurin silicate. Sabili da haka, ana samar da ƙarin foda yayin raguwar zafin jiki, kuma ƙimar RDI-3.15mm ta kai 12.75. %. A ƙarƙashin abun ciki na MgO na halitta, alkalinity ya ƙaru zuwa 0.2, kuma ƙimar ƙaramin zafin jiki na pellet RDI-3.15mm ƙimar sauri ya ragu zuwa 0.52%; alkalinity ya ci gaba da ƙaruwa, kuma ƙimar RDI-3.15mm da gaske an kiyaye shi kusan 0.5%. Wannan saboda ƙari na CaO yana ba da damar pellets su samar da ƙarin matakan silicate na ruwa waɗanda ke da tsayayye yayin raguwar yanayin zafi yayin preheating da calcination, don haka cimma manufar rage ƙarancin ƙarancin zafin jiki da jujjuyawar pellets.

A ƙarƙashin alkalinity na halitta, haɓaka abun ciki na MgO, ƙarancin ƙarancin zafin jiki da ƙoshin pellets, RDI-3.15mm, duk sun faɗi ƙasa da 3.0%. Lokacin da alkalinity da MgO ke aiki tare, ƙimar RDI-3.15mm na pellets a cikin raguwar ƙarancin zafin jiki yana da ƙarancin ƙarfi. RDI-3.15mm yana raguwa tare da haɓaka alkalinity, kuma yana ƙaruwa kaɗan tare da haɓaka abun cikin MgO. Wannan saboda MgO Zai iya hana samuwar silicate na ruwa.

　　Tasirin alkalinity da abun ciki na MgO akan halayen reflow. Halayen narkewa na pellets na iya yin nuni da samuwar pellets a cikin yankin narkewa mai taushi a ƙananan ɓangaren wutar makera da aikin su a cikin yankin narkewa mai taushi. Halayen reflow na cajin suna da tasiri mafi girma akan aikin murhun wutar. Zazzabi mai taushi na pellets yana da ƙarancin ƙarfi kuma tazarar reflow yana da faɗi, kuma ƙimar iska na yankin reflow a cikin ƙananan murhun wutar zai zama talauci, wanda bai dace da jigilar iskar gas da cajin da yana tasiri sosai akan tsarin ragewa.

Pellets acid tare da alkalinity na halitta da abun cikin MgO na halitta sun fara laushi a 1009 ° C, kuma zazzabin faduwa shine 1272 ° C. Tare da abun ciki na MgO na halitta, alkalinity yana ƙaruwa zuwa 1.2, zazzabi mai taushi na pellets yana ƙaruwa zuwa 1034 ° C, tazara mai taushi da tazara mai tazara ya ragu, kuma zazzabin da ake ɗorawa shima yana ƙaruwa zuwa 1299 ° C. Lokacin alkalinity shine 1.2, haɓaka abun cikin MgO na iya haɓaka zafin zafin farawa da taɓarɓarewa. Lokacin da abun cikin MgO ya kai kashi 1.0%, zafin zafin pellet zai tashi zuwa 1072 ℃, zafin zazzabin zai kai 1319 ℃, abun cikin MgO zai ci gaba da ƙaruwa, kuma zafin zafin pellet ba zai Da Da ƙarin ƙaruwa, zafin zazzabin ya karu .

Abubuwan da ke jujjuyawa na pellets galibi suna shafar matakan ruwa mai narkewa kamar fusterite da slag da aka samar yayin raguwa. Munanan halaye masu ƙima na zazzabi na pellets acid galibi saboda ƙarancin narkewa na lokacin olivine slag mai arzikin FeO yayin aiwatar da raguwa, kuma ƙari na MgO na iya haɓaka maƙasudin narkar da yanayin slag. Samar da ingantaccen bayani tare da maɗaukakiyar narkewa zai kuma taka rawa wajen haɓaka halayen haɓakar zafin zafin pellets.

Da fatan za a adana tushe da adireshin wannan labarin don sake bugawa: "Alkali" da "Magnesium" don haɓaka aikin pellet

Minghe Kamfanin 'Yan Wasa Masu Mutu aka sadaukar domin tsirar da samar da inganci da kuma high yi Gyare sassa (karfe mutu simintin sassa Range yafi hada da Thin-Wall Mutu Wasa,Hot Chamber Mutu Wasa,Cold Chamber Mutu Wasa), Zagaye Sabis (Mutuwar 'Yan Wasa,CNC machining,Motsa Motsa, Jiyya na sama) .Adadin al'ada Aluminium ya mutu, magnesium ko Zamak / zinc mutu simintin gyare-gyare da sauran buƙatun simintin maraba don tuntube mu.

Karkashin kulawar ISO9001 da TS 16949, Ana aiwatar da dukkan matakai ta hanyar daruruwan injunan jefa simintin da suka mutu, injunan axis 5, da sauran kayan aiki, tun daga masu fashewa zuwa na’urar Ultra Sonic masu wanki.Minghe ba kawai tana da kayan aiki na zamani ba amma kuma tana da kwararru ƙungiyar ƙwararrun injiniyoyi, masu aiki da sufetoci don tabbatar da ƙirar abokin ciniki ta zama gaskiya.

Manufactureran kwangilar masana'antar mutu. Abubuwan haɓakawa sun haɗa da sassan sanyi na sassan mutuɗar aluminum daga 0.15 lbs. zuwa 6 lbs., saurin canje-canje da aka saita, da aikin inji. Sabis-ƙarin ayyuka sun haɗa da gogewa, faɗakarwa, lalatawa, fashewar harbi, zane, zane, rufi, haɗuwa, da kayan aiki. Abubuwan da aka yi aiki tare sun haɗa da allo irin su 360, 380, 383, da 413.

Zinc ya mutu don jefa ƙirar ƙira / sabis na injiniya tare. Custom manufacturer na daidaici tutiya mutu simintin gyaran kafa. Castananan 'yan simintin gyare-gyare, pressurean ƙwanƙwasa masu juzu'in juzu'in simintin gyare-gyaren juzu'ai, ƙera simintin gyare-gyare na al'ada, ɓangaren mutu da' yan wasa masu mutuwa masu zaman kansu da ƙofar da aka hatimce za a iya ƙera su. Za'a iya kerarrar 'yan simintin a tsayi da faɗi har zuwa 24 a ciki. A cikin +/- 0.0005 a cikin. Haƙuri.  

ISO 9001: 2015 bokan masana'anta ta mutu magnesium, Abubuwan haɓaka sun haɗa da matsin lamba na magnesium mai matsi mai yawa har zuwa tan 200 mai ɗumi mai zafi & 3000 ton mai sanyi, ƙirar kayan aiki, gogewa, gyare-gyaren, inji, foda & zanen ruwa, cikakken QA tare da damar CMM , taro, marufi & isarwa.

ITAF16949 bokan. Servicearin Sabis ɗin Gyare Hadawa zuba jari,yashi,Kushin nauyi, Stauren ɓoye ɓoye,Siffar Centrifugal,Cast Vacuum,Dindindin Mould Gyare, .Hanyoyin iyawa sun hada da EDI, taimakon injiniya, ingantaccen samfuri da aiki na sakandare.

Fitar Masana'antu Abubuwan Nazarin sassa don: Motoci, Bikes, Jirgin sama, kayan kiɗa, Jirgin ruwa, Na'urorin hangen nesa, na'urori masu auna sigina, na'urori masu auna sigina, Na'urori, Kayan lantarki, ,unshi, Clocks, Inji, Injiniya, Kayan Kaya, Kayan Jiki, Jigs, Telecom, Haske, Kayan aikin likita, Na'urar daukar hoto, Robobi, Sassaka, kayan sauti, kayan wasanni, Kayan aiki, Kayan wasa da ƙari. 

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By Minghe Mutu Wasa Wasa | Categories: Labarai masu Taimakawa |Material Tags: Gyare Aluminum, Zinc Gyare, Fitar Magnesium, Castan Wasanni, Bakin Karfe Cast, Fitar tagulla,Gyare Tagulla,Fitar Bidiyo,Tarihin Kamfanin,Aluminum Mutu Gyare | Comments Off