Nkag siab tob txog cov txheej txheem tsim cov xim av corundum hmoov
Sawv ntsug peb meters deb ntawm lub cub hluav taws xob hluav taws xob, lub cua sov nthwv dej qhwv hauv qhov tsis hnov tsw ntawm cov hlau hlawv ua rau koj lub ntsej muag - cov bauxite slurry ntawm ntau tshaj 2200 degrees hauv lub cub tawg yog dov nrog kub kub npuas. Tus yawg laus Lao Li so nws hws thiab hais tias: "Saib? Yog tias cov khoom siv yog ib rab chais tsawg dua, qhov cub kub yuav poob li 30 degrees, thiabxim av corundum uas tawm los yuav nkig zoo li biscuits. " Lub lauj kaub ntawm boiling "molten steel" yog thawj scene ntawm yug ntawm xim av corundum hmoov.
1. Melting: Lub zog ua haujlwm ntawm kev noj "jade" los ntawm qhov hluav taws kub
Lo lus "ntseeg" yog engraved nyob rau hauv cov pob txha ntawm xim av corundum, thiab tus cwj pwm no yog refined nyob rau hauv hluav taws xob arc rauv:
Cov khoom xyaw zoo li tshuaj: bauxite puag (Al₂O₃>85%), anthracite txo tus neeg sawv cev, thiab cov ntaub ntawv hlau yuav tsum tau nchuav ua "matchmaker" - tsis muaj nws los pab nrog melting, cov impurity silicates tsis tuaj yeem ntxuav. Cov phau ntawv sib faib ntawm cov chaw qub qub hauv Henan Xeev tau hnav tag nrho: "Cov thee ntau dhau txhais tau tias muaj cov pa roj carbon ntau thiab cov xim dub, thaum cov hlau me me txhais tau tias tuab slag thiab agglomeration"
Cov lus zais ntawm lub qhov cub tilted: Lub qhov cub lub cev yog tilted ntawm 15-degree lub kaum sab xis kom cov yaj mus rau ib txwm stratify, hauv qab txheej ntawm ntshiab alumina crystallizes rau hauv xim av corundum, thiab cov txheej sab sauv ntawm ferrosilicon slag yog scooped. Tus tswv qub tau siv sijhawm ntev los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txias thiab ntu ntu yog xim av tsaus: "Cov xim no yog lawm!
Kev txias nrawm txiav txim siab qhov tshwm sim: cov yaj yog nchuav rau hauv qhov tob tob thiab nchuav nrog dej txias kom "tawg" rau hauv daim, thiab cov dej vapor ua rau lub suab paj nruag zoo li tawg paj. Kev ntsuas cua txias ceev ceev cov kab laum tsis xws luag, thiab qhov toughness yog 30% siab dua li ntawm cov cua txias - ib yam li quenching rab ntaj, tus yuam sij yog "ceev"
2. Crushing thiab shaping: kos duab ntawm shaping "cov txiv neej tawv"
Lub hardness ntawm cov xim av corundum thaiv tsuas yog tawm ntawm qhov cub yog ze rau ntawmpob zeb diamond. Nws yuav siv ntau yam teeb meem los hloov nws mus rau hauv micron-theem "cov tub rog tseem ceeb":
Lub puab tsaig qhib ntawm lub puab tsaig crusher
Lub puab tsaig hydraulic phaj "crunches" thiab cov pob basketball-qhov loj me yog tawg rau hauv walnuts. Tus neeg teb xov tooj Xiao Zhang taw tes rau ntawm qhov screen thiab yws tias: "Lub sijhawm dhau los lub cib refractory tau sib xyaw ua ke, thiab lub puab tsaig phaj tsoo qhov sib txawv. Pab pawg saib xyuas tau caum kuv thiab cem kuv rau peb hnub."
Kev hloov pauv hauv pob zeb
Lub pob zeb lined nrog granite rumbles, thiab cov pob steel ntaus cov blocks zoo li cov neeg ua yeeb yam hnyav. Tom qab 24 teev ntawm kev sib tsoo tas mus li, tsaus xim av coarse hmoov gushed tawm ntawm qhov chaw nres nkoj tawm. "Muaj qhov ua kom yuam kev ntawm no," tus kws tshaj lij tau rub tawm ntawm lub rooj tswj hwm: "Yog tias qhov ceev tshaj 35 rpm, cov khoom yuav raug muab tso rau hauv cov koob; yog tias nws tsawg dua 28 rpm, cov npoo yuav ntse heev."
Barmac Plastic Surgery
Lub high-end ntau lawm kab qhia tau hais tias nws trump card - Barmac ntsug ncej cuam tshuam crusher. Cov khoom yog crushed los ntawm nws tus kheej-kev sib tsoo nyob rau hauv lub tsav ntawm lub high-ceev rotor, thiab cov micro hmoov tsim yog ib puag ncig li dej pebbles. Kev sib tsoo log Hoobkas hauv Zhejiang Xeev ntsuas: rau tib qhov tshwj xeeb ntawm cov hmoov micro, cov txheej txheem ib txwm muaj qhov ceev ntawm 1.75g / cm³, thaum txoj kev Barmac muaj qhov ceev ntawm 1.92g / cm³! Mr. Li twisted tus qauv thiab sighed: "Thaum yav dhau los, lub Hoobkas sib tsoo lub log ib txwm yws txog cov dej tsis zoo ntawm cov hmoov, tab sis tam sim no nws yws tias qhov filling ceev ceev heev kom ceev."
3. Kev muab qhab nia thiab ua kom huv: kev yos hav zoov muaj tseeb hauv ntiaj teb ntawm microns
Kev faib tawm 1/10 ntawm cov plaub hau tuab rau hauv qib sib txawv yog kev sib ntaus sib tua ntawm tus ntsuj plig ntawm cov txheej txheem:
Qhov tsis meej ntawm airflow classification
0.7MPa compressed cua rushes mus rau hauv chav sib faib nrog cov hmoov, thiab lub impeller ceev txiav txim siab "kab kab": 8000 rpm screens tawm W40 (40μm), thiab 12000 rpm intercepts W10 (10μm). "Kuv ntshai tshaj plaws ntawm cov av noo ntau dhau", tus thawj coj ntawm lub rooj cob qhia tau taw qhia rau lub dehumidification pej thuam: "Lub hli tas los, lub condenser tau tawm fluorine, thiab cov hmoov micro clumps thiab thaiv cov kav dej. Nws tau siv peb zaug los ntxuav nws."
Cov riam ntse ntawm hydraulic kev faib tawm
Rau cov hmoov ultrafine hauv qab W5, dej ntws dhau los ua qhov nruab nrab kev faib tawm. Cov dej huv hauv lub thoob muab cov hmoov zoo ntawm qhov ntws ntawm 0.5m / s, thiab cov khoom ntxhib ua ntej. Tus neeg teb xov tooj ntsia ntawm lub ntsuas ntsuas turbidity: "Yog tias tus nqi ntws yog 0.1m / s sai dua, ib nrab ntawm W3 hmoov yuav khiav; yog tias nws qeeb dua 0.1m / s, W10 yuav sib tov thiab ua rau muaj teeb meem."
Kev sib ntaus sib tua zais cia ntawm kev sib nqus sib nqus thiab tshem tawm hlau
Cov hlau nplaum muaj zog tshem tawm cov ntaub ntawv hlau nrog lub zog nqus ntawm 12,000 gauss, tab sis nws tsis muaj kev pab tiv thaiv cov hlau oxide. Lub tswv yim ntawm Shandong Hoobkas yog: ua ntej-so nrog oxalic acid ua ntej pickling, hloov lub nyuaj Fe₂O₃ rau soluble ferrous oxalate, thiab cov impurity hlau cov ntsiab lus poob los ntawm 0.8% mus rau 0.15%.
4. Pickling thiab calcining: "rebirth" ntawm abrasives
Yog koj xav tauxim av corundum micropowderkom tiv taus qhov kev sim hauv qhov kub-kub sib tsoo log, koj yuav tsum xeem dhau ob txoj kev sim neej thiab kev tuag:
Acid-base dialectics ntawm pickling
Npuas nyob rau hauv hydrochloric acid tank surge kom yaj hlau impurities, thiab kev tswj concentration yog zoo li taug kev ntawm ib tug tightrope: tsawg tshaj li 15% tsis tuaj yeem ntxuav xeb, thiab ntau tshaj 22% corrodes lub alumina lub cev. Lao Li tau tuav daim ntawv xeem PH los qhia txog kev paub: "Thaum nruab nrab nrog alkaline ntxuav, koj yuav tsum tau pinch PH = 7.5. Acid yuav ua rau burrs ntawm cov muaju, thiab alkaline yuav ua rau cov khoom ua hmoov av."
Qhov kub puzzle ntawm calcination
Tom qab calcination ntawm 1450 ℃ / 6 teev nyob rau hauv ib tug teb kiln, lub ilmenite impurities decompose mus rau hauv rutile theem, thiab tshav kub tsis kam ntawm micropowder soars los ntawm 300 ℃. Txawm li cas los xij, vim qhov kev laus ntawm cov thermocouple ntawm ib lub Hoobkas, qhov tseeb qhov kub siab tshaj 1550 ℃, thiab tag nrho cov micro hmoov uas tawm hauv lub cub tawg tau sintered rau hauv "cov ncuav mog qab zib" - 30 tons ntawm cov ntaub ntawv tau ncaj qha scrapped, thiab tus thawj coj ntawm lub Hoobkas tau ntxhov siab heev uas nws ntaus nws txhais taw.
Xaus: Muaj kev zoo nkauj ntawm millimeters
Nyob rau hauv lub Twilight Rhiav, cov cav tov tseem nrov. Lao Li tau tshem cov plua plav tawm ntawm nws cov khaub ncaws ua haujlwm thiab hais tias: "Tom qab ua haujlwm hauv kev lag luam no tau 30 xyoo, kuv thaum kawg nkag siab tias cov hmoov zoo micro yog '70% refining thiab 30% lub neej' - cov khoom xyaw yog lub hauv paus, crushing nyob ntawm kev nkag siab, thiab kev muab qhab nia nyob ntawm kev ceev faj." Los ntawm bauxite mus rau nano-scale micro hmoov, thev naus laus zis breakthroughs ib txwm tig ib ncig ntawm peb lub chaw: purity (pickling thiab impurity tshem tawm), morphology (Barmac shaping), thiab particle loj (qib meej).