Cov Txheej Txheem Tsim Khoom Siv Xim Av Corundum Micropowder thiab Kev Tswj Xyuas Zoo
Taug kev mus rau hauv txhua lub Hoobkas ua khoom siv kho vajtse, thiab huab cua puv nrog cov ntxhiab tsw ntawm cov hmoov hlau, nrog rau lub suab nrov ntawm cov tshuab sib tsoo. Cov neeg ua haujlwm txhais tes muaj roj dub, tab sis cov hmoov xim av ci ntsa iab nyob ntawm lawv xub ntiag—xim av corundum micropowder—yog qhov tseem ceeb ntawm "cov hniav" thiab "ntug ntse" ntawm kev lag luam niaj hnub no. Cov khoom siv tawv no, feem ntau hu ua "corundum" los ntawm cov neeg sab hauv kev lag luam, dhau los ntawm kev hloov pauv ntawm cov hlau mus rau hmoov zoo, qhov kev sim ntawm ob qho tib si kub thiab kev raug.
1. Hluav Taws Xob Ib Txhiab Degree: Cov Txheej Txheem Tsim Khoom ntawm Brown Corundum Micropowder
Xim av corundum micropowderpib ua cov pob zeb bauxite uas tsis muaj zog. Tsis txhob saib tsis taus cov pob zeb hauv av no; lawv yuav tsum yog cov pob zeb zoo nrog cov ntsiab lus Al₂O₃ tsawg kawg yog 85% kom tsim nyog rau kev smelting. Lub sijhawm uas lub cub tawg smelting qhib, nws yog qhov pom zoo nkauj heev - qhov kub hauv lub cub tawg hluav taws xob nce siab, ncav cuag tshaj 2250 ° C. Bauxite, ua ke nrog cov hlau filings thiab coke, tumbles thiab yaj hauv cov nplaim taws kub hnyiab, ntxuav thiab tshem tawm cov khoom tsis huv, thaum kawg tsim cov pob zeb corundum xim av ntom ntom. Kev xaiv hom cub tawg kuj tuav nws tus kheej: lub cub tawg tilting muab cov kua zoo heev thiab cov khoom huv siab, tsim nyog rau cov khoom zoo; lub cub tawg ruaj khov muab cov zis siab thiab tus nqi qis. Cov neeg tsim khoom feem ntau xaiv raws li qhov xav tau.
Xim av corundumCov blocks tshiab los ntawm lub cub tawg tseem yog "roughs," deb ntawm kev ua hmoov zoo. Tom ntej no, lub crusher yuav siv: lub ob-toothed roller crusher rau kev sib tsoo ntxhib, rhuav tshem cov khoom loj, thaum lub vertical impact crusher ua cov crushing zoo, rhuav cov khoom me me mus rau hauv millimeter-me me fragments. Tab sis qhov ntawd tsis yog txhua yam - kev sib cais sib nqus thiab kev tshem tawm hlau yog qhov tseem ceeb rau qhov zoo. Thaum lub zog qhib, lub high-gradient magnetic separator tuaj yeem tshem tawm tag nrho cov hlau filings seem ntawm cov khoom. High-strength magnetic separators siv los ntawm cov tuam txhab zoo li Henan Ruishi tuaj yeem txo Fe₂O₃ kom qis dua 0.15%, tso lub hauv paus rau tom qab pickling.
Lub thawv pickling kuj tseem muaj cov lus zais. Siv cov kua qaub hydrochloric acid 15% -25% rau 2-4 teev. Ua ke nrog Zhenyu Grinding's patented "push-pull cleaning device," cov hmoov raug co thiab ntxuav, yaj cov khoom tsis huv xws li silicon thiab calcium, ntxiv txhim kho qhov huv ntawm cov hmoov zoo. Cov kauj ruam tshuaj ntsuam zaum kawg zoo li "draft": cov ntxaij vab tshaus vibrating muab kev tshuaj ntsuam tas mus li, cais cov khoom me me los ntawm cov ntxhib mus rau cov zoo. Chongqing Saite Corundum's patented screening device txawm suav nrog peb txheej ntawm cov ntxaij vab tshaus ntxiv rau ib nrab ntu screen, xyuas kom meej tias qhov loj me ntawm cov khoom me me faib raws li qhov tseeb zoo li ntsuas nrog tus pas ntsuas. Cov hmoov zoo sieved ces raug sau npe raws li qhov xav tau - 200 # -0 thiab 325 # -0 yog cov lus qhia dav dav. Txhua qhov khoom me me yog sib xws li xuab zeb, ua tiav tiag tiag.
2. Kev Tshuaj Xyuas Zoo: Txoj Kev Pab Cuam Zoo ntawm Micropowder
Cov hmoov av corundum xim av siv nyob qhov twg? Txij li kev txhuam cov iav xov tooj ntawm tes mus rau cov hlau hauv cov cub tawg, txawm tias qhov kev ua haujlwm poob qis me ntsis tuaj yeem ua rau cov neeg siv khoom chim siab. Yog li ntawd, kev tswj xyuas zoo yog qhov ua rau muaj kev ntxhov siab tas li hauv lub Hoobkas. Ua ntej, xav txog cov tshuaj lom neeg sib xyaw - Cov ntsiab lus Al₂O₃ yuav tsum yog ≥95% (cov khoom lag luam siab xav tau ≥97%), TiO₂ ≤3.5%, thiab SiO₂ thiab Fe₂O₃ yuav tsum khaws cia rau hauv 1% thiab 0.2% feem. Cov kws tshaj lij hauv chaw kuaj mob saib xyuas lub spectrometer txhua hnub; txawm tias qhov kev hloov pauv me me hauv cov ntaub ntawv tuaj yeem ua rau rov ua haujlwm ntawm tag nrho cov pawg.
Kev kuaj xyuas lub cev kuj tseem ua tau zoo ib yam:
Qhov Mohs hardness yuav tsum ncav cuag 9.0. Ib qho qauv raug khawb rau ntawm lub phaj siv; txhua yam cim ntawm qhov mos mos raug suav hais tias tsis ua haujlwm.
Qhov ceev tiag tiag tsuas yog txwv rau 3.85-3.9 g/cm³ xwb. Kev hloov pauv qhia txog teeb meem nrog cov qauv siv lead ua.
Kev sim ua kom tsis kub hnyiab yog qhov nyuaj dua - tawg thiab hmoov tom qab muab pov rau hauv lub cub tawg 1900 ° C rau ob teev? Tag nrho cov khoom raug pov tseg!
Qhov sib npaug ntawm qhov loj ntawm cov khoom me me yog qhov tseem ceeb rau kev ua kom cov txiaj ntsig zoo. Tus neeg tshuaj xyuas zoo yuav tsum muab ib diav hmoov nchuav rau hauv qab lub tshuab ntsuas qhov loj ntawm cov khoom me me laser. Txhua qhov kev hloov pauv ntawm tus nqi D50 tshaj 1% suav tias yog qhov ua tsis tiav. Tom qab tag nrho, qhov loj ntawm cov khoom me me tsis sib npaug yuav ua rau muaj khawb lossis ua tej daim me me ntawm qhov chaw ua kom cov hlau ci, ua rau cov neeg siv khoom tsis txaus siab.
Tus qauv teb chaws GB/T 2478-2022, uas tau hloov kho tshiab rau xyoo 2022, tau dhau los ua ib qho kev lag luam uas ruaj khov. Daim ntawv pov thawj tuab no tswj hwm txhua yam los ntawm cov tshuaj lom neeg thiab cov qauv siv lead ua ke mus rau kev ntim khoom thiab kev khaws cia ntawmxim av corundumPiv txwv li, nws yuav tsum tau kom α-Al₂O₃ yuav tsum ua kom pom cov qauv siv lead ua trigonal. Pom cov khoom sib txawv hauv qab lub tshuab microscope? Thov txim, cov khoom yuav raug kaw! Cov chaw tsim khoom tam sim no txawm tias yuav tsum sau npe rau qhov kub thiab txias thiab cov av noo hauv tsev rau khoom - vim ntshai tias cov hmoov me me yuav ntub thiab sib sau ua ke, ua rau lawv lub koob npe puas tsuaj.
3. Hloov Cov Khib Nyhiab Mus Ua Khoom Muaj Nqis: Kev Siv Tshuab Rov Qab Ua Rau Muaj Teeb Meem Txog Cov Khoom Siv
Kev lag luam corundum tau raug kev txom nyem ntev los ntawm kev sib sau ua ke ntawm cov khoom siv abrasives thiab cov log sib tsoo, uas tsis yog tsuas yog siv qhov chaw xwb tab sis kuj ua rau ib puag ncig puas tsuaj. Txawm li cas los xij, ob xyoos dhau los, "recycled corundum" technology tau tshwm sim, muab cov khoom pov tseg rau lub neej tshiab. Ib daim ntawv pov thawj tshiab hauv Yingkou, Liaoning Province, tau coj rov ua dua ib kauj ruam ntxiv: thawj zaug, cov khoom pov tseg corundum tau muab "da dej" kom tshem tawm cov pa phem, ua raws li kev sib tsoo thiab sib cais sib nqus, thiab thaum kawg, kev sib xyaw tob nrog hydrochloric acid. Cov txheej txheem no ua rau kev tshem tawm cov khoom tsis huv nce 40%, coj kev ua tau zoo ntawm cov khoom siv rov ua dua ze rau ntawm cov hmoov micropowder tshiab.
Kev siv cov khoom siv rov ua dua tshiab kuj tseem nthuav dav. Cov chaw tsim khoom siv hluav taws xob nyiam siv nws rau cov av nplaum hauv qhov av - nws yuav tsum tau sib xyaw rau hauv cov castables, thiab cov khoom siv rov ua dua tshiab muab kev siv nyiaj tsim nyog heev. Zoo dua, cov txheej txheem rov ua dua tshiab txo covxim av corundumcov nqi los ntawm 15% -20%, ua rau cov thawj coj zoo siab heev. Txawm li cas los xij, cov kws tshaj lij hauv kev lag luam ceeb toom tias: "Kev ua kom zoo nkauj xav tau cov khoom siv tshiab qib thawj. Yog tias txawm tias me ntsis tsis huv tau sib xyaw rau hauv cov khoom siv rov ua dua tshiab, qhov chaw iav yuav tam sim ntawd dhau los ua pob!"
4. Xaus Lus: Hmoov me me, txawm tias nws me me los xij, nqa qhov hnyav ntawm kev lag luam
Txij li cov nplaim taws kub ntawm cov cub hluav taws xob arc mus rau lub suab nrov ntawm cov khoom sib nqus sib cais, los ntawm kev sib xyaw ntawm cov thoob dej pickling mus rau cov kab scanning ntawm cov khoom me me laser - qhov yug ntawm cov hmoov av corundum xim av yog ib qho me me ntawm kev lag luam niaj hnub no. Cov ntawv pov thawj tshiab, cov qauv hauv tebchaws tshiab, thiab cov thev naus laus zis rov ua dua tshiab txuas ntxiv thawb lub qab nthab ntawm kev lag luam siab dua. Cov kev lag luam hauv qab kev thov rau qhov kev kho mob ze li ntawm qhov siab tshaj plaws txuas ntxiv tsav cov hmoov av zoo dua qub. Ntawm kab sib dhos, cov hnab hmoov xim av raug kaw thiab thauj mus rau ntawm cov tsheb thauj khoom, khi rau cov chaw tsim khoom thoob plaws lub tebchaws. Lawv yuav tsis raug hu, tab sis lawv txhawb nqa lub zog tseem ceeb ntawm Ua nyob rau hauv Suav teb, hauv qab qhov chaw ntawm nws cov xim ci ntsa iab.