Ukuqonda nzulu inkqubo yokuvelisa i-brown corundum powder
Ukuma kwiimitha ezintathu ukusuka kwisithando sombane se-arc, ubushushu obufakwe kwiphunga lentsimbi etshisiweyo bukubetha ebusweni - i-bauxite slurry engaphezulu kwama-2200 degrees kwisithando somlilo iqengqeleka ngamaqamza abomvu egolide. Inkosi endala uLao Li yosula ukubila kwayo kwaye yathi: "Yabona, ukuba into inye ifosholo encinci yamalahle, ubushushu beziko buya kuhla ngama-30 degrees, kwayei-brown corundum ephumayo iya kuba rhabaxa njengeebhiskithi.” Le mbiza yokubilisa "intsimbi etyhidiweyo" yindawo yokuqala yokuzalwa kwe-corundum powder.
1. Ukunyibilika: Umsebenzi onzima wokuthatha “ijeyidi” emlilweni
Igama elithi "uburhalarhume" likrolwe emathanjeni e-brown corundum, kwaye lo mlinganiswa usulungekile kwisithando sombane se-arc:
Izithako zifana neyeza: isiseko se-bauxite (Al₂O₃>85%), i-anthracite yokunciphisa i-agent, kunye neefayili zetsimbi kufuneka zifafazwe "njenge-matchmaker" - ngaphandle kwayo ukunceda ukunyibilika, i-silicates engcolileyo ayinakucocwa. Umlinganiselo weencwadi zemizi-mveliso emidala kwiPhondo laseHenan zonke zigugile: “Amalahle amaninzi athetha ikharbhon eninzi kunye nomnyama, ngelixa intsimbi encinci ithetha i-slag kunye ne-agglomeration”
Imfihlo yesithando somlilo esithambekileyo: Umzimba wesithando somlilo uthambekele kwi-engile ye-15-degree ukuvumela ukunyibilika ukuba kuncibilike ngokwendalo, umaleko ongezantsi we-alumina ecocekileyo ukhazimla kwi-corundum emdaka, kwaye umaleko ongaphezulu we-ferrosilicon slag ukhutshiwe. Inkosi endala yasebenzisa ipiki ende ukugqogqa izibuko lesampulu, kwaye amathontsi atyhidiweyo atyhidiweyo apholiswa kwaye icandelo lomnqamlezo lalimdaka ngokuntsundu: “Lo mbala ulungile! Ukukhanya okuluhlaza kubonisa ukuba i-titanium iphezulu, kwaye ukukhanya okungwevu kuthetha ukuba isilicon ayisuswanga ngokupheleleyo
Ukupholisa ngokukhawuleza kugqiba umphumo: ukunyibilika kuthululelwa emgodini onzulu kwaye kuthululwe ngamanzi abandayo ukuze "kuqhume" kwiinqununu, kwaye umphunga wamanzi wenza isandi esifana ne-popcorn. Ukupholisa ngokukhawuleza kutshixa iziphene zelattice, kwaye ukuqina kuphezulu ngama-30% kunoko kupholisa kwendalo - njengokucima ikrele, isitshixo "sikhawuleza"
2. Ukutyumza kunye nokubumba: ubugcisa bokubumba "abafana abanzima"
Ukuqina kwebhloko ye-corundum emdaka ngaphandle kwe-oveni isondele kuleyo yeiidayimani. Kuthatha ingxaki enkulu ukuyijika ibe "ijoni eliphakamileyo" kwinqanaba le-micron:
Ukuvuleka okurhabaxa kwesityumzi somhlathi
Ipleyiti yomhlathi we-hydraulic "crunches" kunye nebhloko ye-basketball-size iqhekezwe ibe yi-walnuts. Umqhubi wenqwelo-moya uXiao Zhang wakhomba isikrini waza wakhalaza esithi: “Kwixesha elidlulileyo kwaxutywa isitena esitshixayo, kwaza kwaxutywa isitena somhlathi, saqhawula umsantsa.
Utshintsho kwi-ball Mill
Ibhola yokusila ifakwe i-granite rumbles, kwaye iibhola zentsimbi zibethe iibhloko njengabadanisi abanobundlobongela. Emva kweeyure ezingama-24 zokusila ngokuqhubekayo, umgubo orhabaxa omnyama ukhukulisekile ngaphandle kwendawo yokukhupha. “Kukho iqhinga apha,” igcisa lacofa ipaneli yokulawula: “Ukuba isantya singaphezulu kwe-35 rpm, amasuntswana aya kuculwa abe ziinaliti; ukuba ingaphantsi kwe-28 rpm, imiphetho iya kuba bukhali kakhulu.”
Uqhaqho lwePlastiki yeBarmac
Umgca wemveliso ophezulu ubonisa ikhadi layo lexilongo - i-Barmac vertical shaft impact crusher. Izinto eziphathekayo zityunyuzwa ngo-self-collision phantsi kwe-rotor ye-high-speed rotor, kwaye i-micro powder eveliswayo ijikeleza njengamatye omlambo. Umzi-mveliso wamavili okusila kwiPhondo laseZhejiang ulinganisa: kwingcaciso efanayo yomgubo omncinci, indlela yesintu inoxinano lwe-1.75g/cm³, ngelixa indlela ye-Barmac inoxinano lwe-1.92g/cm³! UMnu. Li wajija isampuli waza wancwina wathi: “Kwixesha elidluleyo, umzi-mveliso wamavili okusila wawusoloko ukhalazela ulwelo olungelulo lomgubo, kodwa ngoku ukhalazela ukuba isantya sokuzalisa sikhawuleza kakhulu ukuba siqhubeke.”
3. Ukuhlelwa kunye nokucocwa: ukuzingela okuchanekileyo kwihlabathi le-microns
Ukwahlulahlula amasuntswana 1/10 obunzima beenwele kumabakala ahlukeneyo yidabi lomphefumlo wenkqubo:
Imfihlelo yokuhlelwa kokuhamba komoya
I-0.7MPa ixinzelelwe umoya iqhubela kwigumbi lokuhlelwa kunye nomgubo, kwaye isantya se-impeller simisela "umgca wokwamkelwa": izikrini ze-8000 rpm ngaphandle kwe-W40 (40μm), kunye ne-12000 rpm intercepts W10 (10μm). “Ndoyika kakhulu ukufuma okugqithisileyo”, umlawuli wendibano yocweyo walatha kwinqaba yokuphelisa umswakama: “Kwinyanga ephelileyo, icondenser ivuze ifluorine, kunye nezigaqa zomgubo ezincinci zavala umbhobho. Kuthathe iishifti ezintathu ukuyicoca.”
Imela ethambileyo yokuhlelwa kwehydraulic
Kumgubo we-ultrafine ongaphantsi kwe-W5, ukuhamba kwamanzi kuba yindlela yokuhlelwa. Amanzi acocekileyo kwibhakethi yokulinganisa aphakamisa umgubo ocolekileyo kwisantya sokuhamba kwe-0.5m / s, kwaye amasuntswana arhabaxa ahlala kuqala. Umqhubi ujonge imitha ye-turbidity: "Ukuba isantya sokuhamba si-0.1m / s ngokukhawuleza, isiqingatha se-W3 powder siya kubaleka; ukuba i-0.1m / s icotha, i-W10 iya kuxuba kwaye ibangele ingxaki."
Imfazwe eyimfihlo yokuhlukana kwamagnetic kunye nokususwa kwentsimbi
Irola enozibuthe eyomeleleyo isusa iifayili zentsimbi ngamandla okufunxa ama-12,000 egauss, kodwa ayinakuzinceda ngokuchasene namachokoza e-iron oxide. Ubuqhetseba befektri yaseShandong kukuba: ukucwina kwangaphambili nge-oxalic acid ngaphambi kokukhetha, guqula i-Fe₂O₃ enzima kwi-oxalate e-soluble ferrous oxalate, kwaye umxholo wesinyithi ongcolileyo wehla ukusuka kwi-0.8% ukuya kwi-0.15%
4. Pickling and calcining: “ukuzalwa ngokutsha” kweziqhumiso
Ukuba uyafunabrown corundum micropowderukumelana novavanyo kwivili lokusila lobushushu obuphezulu, kufuneka uphumelele iimvavanyo ezimbini zobomi nokufa:
I-Acid-base dialectics of pickling
Amabhamuza akwitanki ye-hydrochloric acid anyuka ukunyibilikisa ubumdaka besinyithi, kwaye ulawulo loxinaniso lufana nokuhamba kwintambo ebambeneyo: ngaphantsi kwe-15% ayikwazi ukucoca umhlwa, kwaye ngaphezulu kwe-22% yonakalisa umzimba we-alumina. ULao Li waphakamisa iphepha lovavanyo lwe-PH ukuze anike amava: "Xa ungathathi hlangothi ngokuhlamba i-alkaline, kufuneka udibanise ngokuchanekileyo i-PH = 7.5. I-Acid iya kubangela i-burrs kwiikristale, kwaye i-alkaline iya kubangela ukuba umphezulu wamasuntswana ube ngumgubo."
Iphazili yobushushu bokubala
Emva kokubala kwi-1450℃/6 iiyure kwi-rotary kiln, ukungcola kwe-ilmenite kubola kwisigaba se-rutile, kwaye ukuxhathisa ubushushu be-micropowder kunyuka ngama-300℃. Nangona kunjalo, ngenxa yokuguga kwe-thermocouple yomzi-mveliso othile, iqondo lobushushu langempela ladlula i-1550 ℃, kwaye zonke iipowder ezincinci eziphuma kwiziko zafakwa "kwieqebengwana zesesame" - iitoni ezingama-30 zezixhobo zachithwa ngokuthe ngqo, kwaye umlawuli wefektri wayenxunguphele kangangokuba wanyathela ngeenyawo.
Isiphelo: I-industrial aesthetics phakathi kweemilimitha
Kwiworkshop yangorhatya, oomatshini basagquma. ULao Li wasusa uthuli kwiimpahla zakhe zokusebenza kwaye wathi: "Emva kokusebenza kolu shishino iminyaka engama-30, ekugqibeleni ndiyaqonda ukuba i-micro powders efanelekileyo 'yi-70% yokucoca kunye ne-30% yobomi' - izithako zisisiseko, ukutyumza kuxhomekeke ekuqondeni, kwaye ukuhlelwa kuxhomekeke kwinyameko." Ukusuka kwi-bauxite ukuya kwi-nano-scale micro powders, ukuphumelela kwezobuchwepheshe kuhlala kujikeleza amaziko amathathu: ubunyulu (ukukhetha kunye nokususwa kokungcola), i-morphology (i-Barmac shaping), kunye nobukhulu bamasuntswana (ukuhlelwa okuchanekileyo).