Hauv cov saw ntau lawm ntawm cov khoom siv hluav taws xob tshiab xws li Lithium - Ion thiab cov roj teeb tseem ceeb hauv kev txiav txim siab ua haujlwm ntawm cov khoom kawg. Roj teeb slurry muaj cov sib xyaw ntawm cov khoom siv nquag, cov neeg sawv cev, cov neeg sawv cev, thiab cov kuab tshuaj hauv cov proportions. Nws cov teeb meem sib cais thiab ua npuas ncauj - Cov khoom pub dawb yog ncaj qha cuam tshuam nrog qhov zoo ntawm cov hluav taws xob txheej. Lub xub ntiag ntawm bubbles nyob rau hauv lub slurry tuaj yeem ua rau muaj kev tsis txaus ntseeg, cuam tshuam rau cov roj teeb lub sijhawm, txo cov roj teeb hluav taws xob, txo cov peev txheej thiab lub neej muaj kev phom sij. Cov txheej txheem ib txwm muaj, xws li lub tshuab nqus dej Performing thiab ntxiv cov tshuaj tiv thaiv thiab lub zog ua kom muaj zog uas cuam tshuam kev ua haujlwm roj teeb. Tawm tsam no backdrop, ultrasonic thev naus laus zis, nrog nws cov kev ua phooj ywg muaj zog, thiab cov kuab paug theem nrab rau roj ntsha rau roj teeb tsis pom kev.
Ii. Lub ntsiab lus tseem ceeb ntawm ultrasonic roj teeb slurry defoaming
Ultrasonic defoaming tshuab siv cov txiaj ntsig dual los ntawm cavitation thiab kev co kom muaj kev tshem tawm npuas hauv roj teeb. Nws cov ntsiab cai tseem ceeb tuaj yeem muab faib ua peb cov txheej txheem tseem ceeb:
1. Cavitation nyhuv: "micro - tawg" npuas kev puas tsuaj
Thaum Ultrasonic tsis (feem ntau nrog ib zaus ntawm 20kHz - 1mHz) tau thov rau lub roj teeb hloov pauv tsis pub dhau lub slencry-alternating ntawm cov compression thiab kev tiv thaiv theem. Thaum lub sij hawm tsis tshua muaj theem, lub siab nyob rau hauv slurry poob ntau, ntau tus naj npawb me me lub nqus dej (cavitation npuas). Cov bubitation npuas nrawm nrawm nrawm bubbles (suav nrog micron - thiab txawm tias npuas - Cov npuas me), ua rau lawv lub ntim txuas ntxiv. Tom qab, thaum lub sij hawm compression theem, lub siab nyob rau hauv lub slurry sai sai sawv. Nyob rau hauv lub siab, cavitation npuas nrawm nrawm nrawm thiab muaj ntau txhiab tus neeg muaj kev kub ntxhov (nce ntau txhiab tus neeg siab tawv) Qhov no "micro - tawg" - Zoo li cov txheej txheem tawg ncaj qha tawg cov npuas rau hauv cov npuas me me npuas. Cov nuclei, ua rau me me kom tswj ruaj khov, kev sib sau ua ke nrog cov neeg nyob ib puag ncig lossis khiav tawm ntawm lub system, ua tiav cov nyhuv defoaming.
2. Kev cai kis tau: Qhia npuas tsiv teb tsaws thiab khiav dim
Thaum ultrasound propagates los ntawm slurry, nws kuj tseem ua rau muaj kev kub me me hauv cov kab npauj npaim (qhov zaus ntawm kev co cov ultrasound zaus). Qhov kev co no cuam tshuam cov ruaj khov sib npaug ntawm npuas hauv cov slurry. Cov npuas ua ke txuas nrog rau saum npoo ntawm cov khoom siv nquag los yog "khi" los ntawm cov kab mob kev co hauv qab kev ua kom pom kev zoo nkauj thiab tawg mus rau qhov chaw slurry. Tsis tas li ntawd, kev co txo cov viscos hauv zos ntawm cov slurry viscosity ntawm slurry, txo kev tawm tsam rau npuas tsiv teb tsaws thiab ua kom khiav tawm kom nrawm thiab khiav dim. Qhov kev co no - Pab tsiv teb chaws cov nyhuv yog qhov tshwj xeeb tshaj yog rau lub siab siab (xws li Lithium - Cov roj teeb uas muaj viscosity ntawm 1000 - 5000mpa 5 s). Nws tuaj yeem daws qhov teeb meem ntawm npuas khiav tawm ntawm qhov siab - viscosity slurries thaum lub sijhawm nqus plua plav defoaming.
3. Cov txheej txheem txawv txawv: tiv thaiv npuas refeneration
Tsis zoo li cov tshuaj tiv thaiv tshuaj lom neeg, ultrasonic thev naus laus zis tsis yog defoams tab sis kuj rov qab faib cov khoom siv hauv slurry. Kev co ultrasonic thiab cavitation nyhuv no tawg cov khoom siv nquag thiab cov neeg coj ua haujlwm hauv cov slurry, tsim kom muaj kev sib cais ntau dua. Qhov kev rho tawm no txo cov "Voids" tsim los ntawm particle agglomeration. Cov voids tau yooj yim ntxiab cua thiab ua cov npuas tshiab. Cov kev sib cais ntawm kev sib cais ntawm cov voids ua rau cov voids no, txo qhov ntxim nyiam ntawm cov khoom siv npuas qub ntawm lub hauv paus. Qhov no ua tiav ob qhov cuam tshuam dua ntawm "defoaming + dispersion," txuas ntxiv txhim kho slurry zoo.
III. Cov ntsiab lus zoo ntawm Ultrasonic Defoaming Tshuab
Piv rau cov qauv kev ua yeeb yam zoo ib txwm muaj, kev siv cov txuj ci tseem ceeb hauv roj teeb defoaming, uas tuaj yeem suav tau hauv qab plaub hauv qab no:
1. Kev ua haujlwm siab defoaming efficiency thiab dav kev thov ntau yam
Ultrasonic defoaming muaj lub sijhawm luv luv (feem ntau ib qho kev kho mob tsuas yog siv sijhawm ntau dua li kaum feeb (suav nrog nano - Cov npuas tawv) uas nyuaj rau tshem tawm nrog cov kev kawm ib txwm muaj. Seb nws qis - viscosity anread slurry (xws li graphite slurry slurry), siab - viscosity dawb Muaj feem ntau slurries li ntawm 100 mus rau 10,000 leej mpais ntawm cov slurry ntawm cov hluav taws xob cia khoom siv hluav taws xob. 2. Ntsuab thiab muaj kuab paug - Dawb, ua kom muaj teeb meem roj teeb ua tau zoo
Ultrasonic defoaming yog lub cev defoaming txoj kev uas tsis muaj cov neeg sawv cev tsis txaus ntseeg ntawm kev tsis zoo ntawm kev tiv thaiv tus neeg sawv cev ntawm cov roj teeb. Cov organic nyob rau hauv cov khoom siv tshuaj lom neeg yuav cuam tshuam nrog electrode cov ntaub ntawv nquag lossis decompose thaum lub sijhawm caij tsheb kauj vab, tsim cov roj av thiab ua rau muaj peev xwm cuam tshuam. Cov thev naus laus zis, ntawm qhov tod tes, tsuas yog lub cev lov tsis muaj kev hloov pauv ntawm cov slurry, yog li ua kom zoo tshaj plaws entrochemical thiab kev nyab xeeb ntawm lub roj teeb. Tsis tas li ntawd, cov thev naus laus zis no ua rau tsis muaj dej lossis tso pa tawm, ua raws li kev tsim qauv "txhim kho kev lag luam ntsuab ntawm lub zog kev lag luam tshiab.
3. Cov txheej txheem muaj zog sib xyaw ua ke thiab kev sib xyaw ua ke yooj yim rau hauv cov kab ntau lawm
Cov khoom siv ultrasonic defoaming yog qhov sib xyaw thiab tuaj yeem hloov ua ke rau cov roj teeb uas twb muaj lawm. Nws tuaj yeem siv los ua cov chaw muag khoom defoaming, ntsia nruab nrab ntawm slurry sib xyaw tank thiab txheej txheej. Nws kuj tseem tuaj yeem ua ke nrog cov cuab yeej sib xyaw ua ke los tsim cov "sib xyaw ua ke + system ultrasonic deabling" txheej txheem, ua rau ib lub cev kev npaj slurry slurry thiab defoaming. Tsis tas li ntawd, cov khoom siv ultrasonic ultrasonic (xws li zaus, lub zog, thiab cov ntsiab lus defulation, cia li ua tiav cov ntsiab lus sib txawv, thiab cov ntsiab lus sib txawv ntawm cov kab ntau lawm.
4. Txo cov nqi ntau lawm thiab txhim kho ntau lawm kev ruaj khov
Nyob rau hauv cov nqe lus ntawm ntev - sij hawm siv cov nqi, ultrasonic defoaming siv tsawg dua lub zog tsis tu ncua (uas yuav tsum tau ua rau lub tshuab nqus tsev siab dua tshiab (uas yuav tsum tau ua rau lub zog ua haujlwm siab dua thiab ntxiv cov nqi ntawm tshuaj tiv thaiv tshuaj. Nyob rau hauv cov nqe lus ntawm ntau lawm stabability, ultrasonic defoaming muaj cov nyhuv ruaj khov, muaj kev cuam tshuam tsawg dua los ntawm slurry batch variations thiab hloov nyob rau hauv qhov kub thiab huab cua sov thiab av noo. Qhov no txo cov hluav taws xob ntawm cov nqi electrode tshwm sim los ntawm tsis tiav defoaming, txhim kho cov txiaj ntsig thiab kev ruaj khov ntawm cov kab ntau lawm. Cov ntaub ntawv thov los ntawm qee cov tshuab roj teeb qhia tau hais tias kev siv lub neej ultrasonic tsis muaj zog (1%, thiab txo cov nqi ntau lawm los ntawm 8% 12%.