Nzwisisa zvakadzama maitiro ekugadzira brown corundum poda
Kumira mamita matatu kubva pachoto chemagetsi arc, kupisa kwemhepo kwakaputirwa mukunhuhwirira kwesimbi yakatsva kunorova iwe pachiso - iyo bauxite slurry inopfuura 2200 degrees muchoto inoputika negoridhe tsvuku tsvuku. Tenzi wekare Lao Li akapukuta ziya rake ndokuti: “Maona?brown corundum anobuda achaita brittle semabhisikiti." Iyi hari yekubikira "simbi yakanyungudutswa" ndiyo yekutanga chiitiko chekuzvarwa kwebrown corundum powder.
1. Kunyunguduka: Basa rakaoma rekutora "jade" kubva mumoto
Izwi rekuti "kutyisa" rakanyorwa mumapfupa ebrown corundum, uye chimiro ichi chinonatswa muchoto chemagetsi arc:
Zvisungo zvakafanana nemushonga: bauxite base (Al₂O₃>85%), anthracite reducing agent, uye iron filings inofanira kusaswa se "matchmaker" - pasina iyo kuti ibatsire nekunyunguduka, tsvina yakasvibiswa haigoni kucheneswa. Mabhuku akaenzana emafekitari ekare muRuwa rweHenan ose asakara: “Marasha akawandisa anoreva kabhoni yakakwira nedema, nepo simbi shoma inoreva marara uye kuungana”
Chakavanzika chevira rakarereka: Muviri wevira wakarereka pakona yegumi neshanu kubvumira kunyunguduka kuti kunyunguduke, iyo yepasi pealumina yakachena inopenya mubrown corundum, uye iyo yepamusoro yeferrosilicon slag inobviswa. Shasha akashandisa chipikiri chakareba kukwenya chiteshi chesampuli, uye madonhwe akanyunguduka akanyungudutswa akatonhodzwa uye chikamu chemuchinjikwa chakasvibira: "Ruvara urwu rwakaita zvakanaka! Chiedza chebhuruu chinoratidza kuti titanium yakakwirira, uye grey mwenje unoreva kuti silicon haina kubviswa zvachose"
Kukurumidza kutonhora kunogadzirisa mugumisiro: iyo yakanyunguduka inodururwa mugomba rakadzika uye inodururwa nemvura inotonhora kuti "iputika" kuita zvidimbu, uye mhute yemvura inoita popcorn-like crackling sound. Kukurumidza kutonhora kunovhara reti yakakanganisa, uye kuoma kwacho kwakakwira 30% kupfuura uko kwekutonhodza kwechisikigo - sekudzima bakatwa, kiyi "inokurumidza"
2. Kupwanya uye kuumba: hunyanzvi hwekuumba "varume vakaoma"
Kuoma kwebrown corundum block ichangobuda muovheni iri padyo neiyo yemadhaimani. Zvinotora dambudziko rakawanda kuishandura kuita micron-level "elite soldier":
Kuvhurika kwakakasharara kwekupwanya shaya
Iyo hydraulic jaw plate "crunches" uye bhasikiti-saizi block yakaputswa kuita walnuts. Operator Xiao Zhang akanongedza sikirini ndokunyunyuta kuti: “Nguva yakapfuura chidhinha chesimbi chakasanganiswa, uye shaya yakatsemuka.
Shanduko muchigayo chebhora
Chigayo chebhora chine kurira kwegranite, uye mabhora esimbi anorova mabhuroko sevatambi vane chisimba. Mushure memaawa makumi maviri nemana ekuramba achikuya, hupfu hwakasvibira hwakasvibira hwakabuda kubva pachiteshi chekuburitsa. "Pane zano pano," nyanzvi yakarova pane control panel: "Kana kumhanya kukapfuura 35 rpm, zvimedu zvinogayiwa kuita tsono; kana iri pasi pe28 rpm, mipendero inenge yakanyanya kupinza."
Barmac Plastic Surgery
Mutsetse wekugadzira wepamusoro unoratidza kadhi rayo - Barmac vertical shaft impact crusher. Izvo zvinhu zvinopwanyika nekuzvirovera pasi pekutyaira kweiyo high-speed rotor, uye iyo micro poda inogadzirwa yakatenderera sematombo enzizi. Fekitori yekukuya mavhiri mupurovhinzi yeZhejiang yakayerwa: kune iyo yakafanana dhizaini yehupfu hudiki, nzira yechinyakare ine huwandu hwakawanda hwe1.75g/cm³, nepo nzira yeBarmac ine huzhinji density ye1.92g/cm³! VaLi vakamonyanisa muenzaniso wacho ndokugomera, kuti: “Kare, fekitari yemavhiri okukuya yaigara ichinyunyuta pamusoro pokunaya kwakashata kwoupfu, asi zvino inonyunyuta kuti sipidhi yokuzadza inokurumidza zvikuru kuti irambe iripo.”
3. Kudhirowa nekucheneswa: kuvhima chaiko munyika yemamicrons
Kuisa zvidimbu 1/10 yehukobvu hwebvudzi mumagiredhi akasiyana ihondo yemweya wekuita:
Chakavanzika chekuyerera kwemhepo
0.7MPa mhepo yakamanikidzwa inomhanya ichipinda mukamuri yekuisa nehupfu, uye iyo impeller inomhanyisa inosarudza "mutsara wekugamuchira": 8000 rpm inoburitsa W40 (40μm), uye 12000 rpm inobata W10 (10μm). "Ndinotya kunyanya kunyorova," mutungamiri wewekishopu akanongedza shongwe yekubvisa humidifying: "Mwedzi wapera, condenser yakadonha fluorine, uye micro powder clumps ndokuvhara pombi. Zvakatora mashifiti matatu kuichenesa."
Iyo nyoro banga re hydraulic classification
Kune ultrafine powders pazasi peW5, kuyerera kwemvura kunova iyo yemhando yepakati. Mvura yakachena iri mubhaketi remagiredhi inosimudza hupfu hwakatsetseka pamwero wekuyerera we 0.5m/s, uye zvimedu zvakakora zvinotanga kugara. Mushandi anotarisa mita ye turbidity: "Kana chiyero chekuyerera chiri 0.1m / s nekukurumidza, hafu yeW3 powder ichapukunyuka; kana iri 0.1m / s inononoka, W10 ichasangana uye inokonzera dambudziko."
Hondo yakavanzika yekuparadzaniswa kwemagineti uye kubviswa kwesimbi
Iyo yakasimba magineti roller inobvisa mafirita esimbi ane simba rekusveta 12,000 gauss, asi haigone kurwisa makwapa e iron oxide. Hunyengeri hwefekitori yeShandong ndehwe: pre-soak ne oxalic acid usati watora, shandura iyo yakaoma Fe₂O₃ kuita soluble ferrous oxalate, uye kusachena kwesimbi kunodonha kubva pa0.8% kusvika 0.15%
4. Pickling uye calcining: "kuzvarwa patsva" kweabrasives
Kana uchidabrown corundum micropowderkuti utsungirire bvunzo muvhiri rekukuya-yepamusoro, unofanirwa kupasa bvunzo mbiri dzehupenyu nerufu:
Acid-base dialectics ye pickling
Mabhubhu ari muhydrochloric acid tank anowedzera kunyungudutsa tsvina yesimbi, uye kudzora kudzora kwakafanana nekufamba patambo yakaoma: isingasviki 15% haigone kuchenesa ngura, uye inodarika 22% inoodza muviri wealuminium. Lao Li akasimudza bepa rekuongorora PH kuti ape ruzivo: "Kana uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge uchinge wawacha, unofanirwa kudzvanya PH = 7.5 nemazvo. Asidhi inokonzeresa kuputika pamakristasi, uye alkaline ichaita kuti pamusoro pezvikamu zvive upfu."
Iyo tembiricha puzzle yecalcination
Mushure mekuverengera pa1450 ℃/6 maawa muhovhoni inotenderera, iyo ilmenite tsvina inoora kuita rutile chikamu, uye kupisa kwekupisa kweiyo micropowder kunokwira ne300 ℃. Nekudaro, nekuda kwekuchembera kweiyo thermocouple yeimwe fekitori, tembiricha chaiyo yakapfuura 1550 ℃, uye madiki madiki ehupfu akabuda muchoto akaiswa mu "sesame makeke" - matani makumi matatu ezvigadzirwa akaraswa zvakananga, uye mutungamiriri wefekitori akashungurudzika zvekuti akatsika tsoka dzake.
Mhedziso: Industrial aesthetics pakati pemamirimita
Mumusangano wemangwanani, michina ichiri kurira. Lao Li akabvisa guruva pazvipfeko zvake zvebasa ndokuti: "Mushure mekushanda muindastiri iyi kwemakore makumi matatu, ini pakupedzisira ndinonzwisisa kuti yakanaka micro powders ndeye '70% yekunatsa uye 30% hupenyu' - zvimisikidzo ndizvo hwaro, kupwanya kunoenderana nekunzwisisa, uye giredhi zvinoenderana nekungwarira." Kubva pabauxite kusvika ku nano-scale micro powders, tekinoroji inogara ichitenderedza nzvimbo nhatu: kuchena (kunhonga nekubvisa tsvina), morphology (Barmac shaping), uye particle size (chaiyo giredhi).