Kumvetsetsa bwino njira yopangira ufa wa brown corundum

Kumvetsetsa bwino njira yopangira ufa wa brown corundum

Poyima mamita atatu kuchokera ku ng'anjo yamagetsi, kutentha komwe kumakulungidwa ndi fungo la chitsulo chopsereza kumakukhudzani kumaso - matope a bauxite pa madigiri opitilira 2200 mu ng'anjo akugubuduzika ndi thovu lofiira lagolide. Bwana wakale Lao Li anapukuta thukuta lake nati: "Mukuona? Ngati chinthucho chili ndi fosholo imodzi yochepera malasha, kutentha kwa ng'anjo kudzatsika ndi madigiri 30, ndipocorundum yofiirira chomwe chidzatuluka chidzakhala chophwanyika ngati mabisiketi.” Mphika wowirawu wa “chitsulo chosungunuka” ndi malo oyamba kubadwa kwa ufa wa corundum wofiirira.

1. Kusungunula: Ntchito yovuta yochotsa "jade" pamoto

Mawu oti "oopsa" amalembedwa m'mafupa a corundum yofiirira, ndipo khalidweli limakonzedwanso mu ng'anjo yamagetsi ya arc:

Zosakaniza zili ngati mankhwala: maziko a bauxite (Al₂O₃>85%), chochepetsera anthracite, ndipo zidutswa zachitsulo ziyenera kupopedwa ngati "chogwirizanitsa" - popanda icho kuti chithandize kusungunuka, silicate zodetsedwa sizingathe kutsukidwa. Mabuku owerengera a mafakitale akale ku Henan Province onse atha ntchito: "Malasha ambiri amatanthauza mpweya wambiri ndi wakuda, pomwe chitsulo chochepa chimatanthauza slag wandiweyani ndi agglomeration"

Chinsinsi cha ng'anjo yopendekeka: Thupi la ng'anjo limapendekeka pa ngodya ya madigiri 15 kuti kusungunuka kukhale kogawanika mwachibadwa, gawo la pansi la alumina yoyera limapangika kukhala corundum yofiirira, ndipo gawo lapamwamba la ferrosilicon slag limachotsedwa. Katswiri wakale adagwiritsa ntchito pick yayitali kuti alowetse doko la sampling, ndipo madontho osungunuka omwe adathiridwa adazizira ndipo gawo lopingasa linali lakuda: "Mtundu uwu ndi wolondola! Kuwala kwabuluu kumasonyeza kuti titaniyamu ndi yokwera, ndipo kuwala kotuwa kumatanthauza kuti silicon siinachotsedwe kwathunthu"

Kuzizira mwachangu kumatsimikiza zotsatira zake: kusungunuka kumathiridwa m'dzenje lakuya ndikutsanuliridwa ndi madzi ozizira kuti "aphulike" kukhala zidutswa, ndipo nthunzi yamadzi imapanga phokoso lomveka ngati popcorn. Kuzizira mwachangu kumatseka zolakwika za lattice, ndipo kulimba kwake ndi 30% kuposa kuzizira kwachilengedwe - monga kuzimitsa lupanga, kiyi ndi "mwachangu"

2. Kuphwanya ndi kuumba: luso lopanga "anthu olimba mtima"

Kulimba kwa chipika cha corundum chofiirira chomwe chatuluka mu uvuni kuli pafupi ndidiamondiZimavuta kwambiri kuti zisinthe kukhala "msilikali wapamwamba" wa micron:

Kutseguka kolimba kwa chotsukira nsagwada

Chidebe cha nsagwada cha hydraulic "chimaphwanyika" ndipo chipika chonga cha basketball chasweka kukhala mtedza. Woyendetsa ntchito Xiao Zhang analoza pazenera ndikudandaula kuti: "Nthawi yomaliza njerwa yolimba inasakanizidwa, ndipo chidebecho chinaswa mpata. Gulu lokonza zinthu linandithamangitsa ndikundidzudzula kwa masiku atatu"

Kusintha kwa mphero ya mpira

Chipinda chopukusira mpira chinali ndi phokoso la granite, ndipo mipira yachitsulo inagunda mabuloko ngati ovina achiwawa. Pambuyo pa maola 24 opera mosalekeza, ufa wakuda wakuda unatuluka kuchokera pa doko lotulutsira madzi. "Pali chinyengo apa," katswiriyo anagogoda pa control panel: "Ngati liwiro lipitirira 35 rpm, tinthu tating'onoting'ono timeneti tidzaphwanyidwa kukhala singano; ngati ndi lochepera 28 rpm, m'mbali mwake mudzakhala wakuthwa kwambiri."

Opaleshoni ya Pulasitiki ya Barmac

Mzere wapamwamba kwambiri wopangira ukuwonetsa khadi lake lamphamvu - Barmac vertical shaft impact crusher. Zipangizozo zimaphwanyidwa ndi kugundana pansi pa rotor yothamanga kwambiri, ndipo ufa wopangidwa ndi wozungulira ngati miyala ya m'mphepete mwa nyanja. Fakitale yopukusira mawilo ku Zhejiang Province idayesa: kuti ipereke mawonekedwe omwewo a ufa wochepa, njira yachikhalidwe ili ndi kuchuluka kwa 1.75g/cm³, pomwe njira ya Barmac ili ndi kuchuluka kwa 1.92g/cm³! Bambo Li adapotoza chitsanzocho napumira kuti: "M'mbuyomu, fakitale yopukusira mawilo nthawi zonse inkadandaula za kusayenda bwino kwa ufawo, koma tsopano ikudandaula kuti liwiro lodzaza ndi lothamanga kwambiri kuti lipitirire."

3. Kuyesa ndi kuyeretsa: kusaka kolondola padziko lonse la ma microns

Kugawa tinthu tating'onoting'ono 1/10 cha makulidwe a tsitsi m'magawo osiyanasiyana ndi nkhondo ya moyo wa ndondomekoyi:

Chinsinsi cha kugawa kwa mpweya

Mpweya wopanikizika wa 0.7MPa umalowa m'chipinda chokhala ndi ufa, ndipo liwiro la impeller limatsimikiza "mzere wolowera": 8000 rpm imachotsa W40 (40μm), ndipo 12000 rpm imachotsa W10 (10μm). "Ndikuopa kwambiri chinyezi chochuluka," mkulu wa workshop adaloza nsanja yochotsera chinyezi: "Mwezi watha, condenser idatulutsa fluorine, ndipo ufa wochepa unagundana ndikutseka payipi. Zinatenga mashifti atatu kuti iyeretse."

Mpeni wofatsa wa gulu la hydraulic

Pa ufa wa ultrafine pansi pa W5, madzi oyenda amakhala njira yogawa. Madzi oyera omwe ali mu chidebe choyezera amanyamula ufa wosalala pa liwiro la 0.5m/s, ndipo tinthu tating'onoting'ono timakhazikika kaye. Wogwiritsa ntchito amayang'ana choyezera madzi: "Ngati liwiro la madzi ndi 0.1m/s mwachangu, theka la ufa wa W3 lidzatuluka; ngati uli wocheperako ndi 0.1m/s, W10 idzasakanikirana ndikuyambitsa mavuto."

Nkhondo yachinsinsi yolekanitsa maginito ndi kuchotsa chitsulo

Chozungulira champhamvu cha maginito chimachotsa zidutswa zachitsulo ndi mphamvu yoyamwa ya gauss 12,000, koma sichingathe kuthana ndi mawanga a iron oxide. Chinsinsi cha fakitale ya Shandong ndi ichi: kuviika mu oxalic acid musanaphike, kusintha Fe₂O₃ yovuta kukhala soluble ferrous oxalate, ndipo kuchuluka kwa chitsulo chosayera kumatsika kuchoka pa 0.8% kufika pa 0.15%.

4. Pkukwapula ndi kukanda: "kubadwanso" kwa zinthu zokwapula

Ngati mukufunaufa wa brown corundum micropowderKuti mupirire mayeso mu gudumu lopukusira lotentha kwambiri, muyenera kupambana mayeso awiri a moyo ndi imfa:

Kusankha kwa pickling pogwiritsa ntchito asidi

Ma thovu mu thanki ya hydrochloric acid amasungunuka kwambiri mpaka kusungunula zinthu zosafunika zachitsulo, ndipo kuwongolera kuchuluka kwa zinthu kuli ngati kuyenda pa chingwe cholimba: zosakwana 15% sizingathe kuyeretsa dzimbiri, ndipo zoposa 22% zimawononga thupi la alumina. Lao Li adakweza pepala loyesera la PH kuti apereke chidziwitso: "Mukachotsa zinthu pogwiritsa ntchito kutsuka kwa alkaline, muyenera kufinya PH = 7.5 molondola. Asidi imayambitsa ma burrs pa makhiristo, ndipo alkaline imapangitsa kuti pamwamba pa tinthu timeneti pakhale ufa."

Kusanthula kwa kutentha kwa calcination

Pambuyo pa calcination pa 1450℃/maola 6 mu uvuni wozungulira, zinyalala za ilmenite zimawola kukhala rutile phase, ndipo kukana kutentha kwa micropowder kumakwera ndi 300℃. Komabe, chifukwa cha kukalamba kwa thermocouple ya fakitale inayake, kutentha kwenikweni kunapitirira 1550℃, ndipo ufa wonse wa micro powder womwe unatuluka mu uvuni unasambitsidwa kukhala "makeke a sesame" - matani 30 a zipangizo zinachotsedwa mwachindunji, ndipo woyang'anira fakitaleyo anavutika kwambiri kotero kuti anaponda mapazi ake.

Kutsiliza: Kukongola kwa mafakitale pakati pa mamilimita

Mu workshop ya usiku, makinawo akungolirabe. Lao Li anapukuta fumbi pa zovala zake zogwirira ntchito ndipo anati: “Nditagwira ntchito mumakampaniwa kwa zaka 30, potsiriza ndamvetsa kuti ufa wabwino wa micro ndi '70% woyengedwa bwino ndi 30% wa moyo' - zosakaniza ndiye maziko, kuphwanya kumadalira kumvetsetsa, ndipo kuyika chizindikiro kumadalira kusamala.” Kuchokera ku bauxite mpaka ufa wa micro-scale, kupita patsogolo kwaukadaulo nthawi zonse kumazungulira malo atatu: kuyera (kuchotsa zodetsa ndi kuyeretsa), mawonekedwe (kupanga Barmac), ndi kukula kwa tinthu (kuyika chizindikiro molondola).