xov xwm

     Diatomite lim pabmuaj cov qauv zoo microporous, kev ua haujlwm adsorption thiab kev ua haujlwm ntawm kev sib txhuam, uas tsis yog tsuas yog ua kom cov kua lim dej kom tau txais qhov sib piv zoo dua, tab sis kuj lim tawm cov khib nyiab zoo kom pom tseeb.

     Diatomaceous ntiaj tebyog qhov tso nyiajntawm cov seem ntawm ancient ib leeg-hlwb diatoms. Nws cov yam ntxwv: lub teeb yuag, ntxeem tau, siab zog, hnav tsis kam, rwb thaiv tsev, rwb thaiv tsev kub, adsorption thiab filling thiab lwm yam kev ua tau zoo heev. Muaj tshuaj lom neeg ruaj khov zoo. Nws yog cov khoom siv tseem ceeb xws li rwb thaiv tsev kub, sib tsoo, pom, adsorption, tiv thaiv coagulation, demoulding, filling, carrier thiab lwm yam. Nws tuaj yeem siv dav hauv kev lag luam xws li metallurgy, tshuaj lom neeg kev lag luam, hluav taws xob fais fab, kev ua liaj ua teb, chiv, cov khoom siv hauv tsev thiab cov khoom siv rwb thaiv tsev. Nws tseem tuaj yeem siv los ua cov khoom siv ua haujlwm rau cov yas, roj hmab, ceramics, thiab ntawv ua.

Diatomite filter aid classification Diatomite filter aids muab faib ua cov khoom qhuav, calcined khoom thiab flux calcined cov khoom raws li cov txheej txheem ntau lawm.

①Dry khoom Cov khoom siv purified, ua ntej qhuav thiab pulverized qhuav silica av nplaum raw khoom yog qhuav ntawm qhov kub ntawm 600-800 ° C, thiab ces pulverized. Cov khoom no muaj ib tug zoo particle loj thiab yog haum rau precision pom. Nws feem ntau yog siv ua ke nrog lwm cov khoom siv lim dej. Cov khoom qhuav yog feem ntau lub teeb daj, tab sis kuj milky dawb thiab lub teeb grey.

②Calcined khoom Cov khoom siv purified, qhuav thiab crushed diatomite raw cov ntaub ntawv yog pub rau hauv ib tug teb kiln, calcined ntawm ib tug kub ntawm 800-1200 ° C, ces crushed thiab cais kom tau calcined khoom. Piv nrog rau cov khoom qhuav, qhov permeability ntawm cov khoom calcined yog ntau tshaj peb zaug siab dua. Cov khoom calcined feem ntau yog lub teeb liab.

③Flux calcined khoomTom qab purification, ziab thiab crushing, diatomite raw khoom yog ntxiv nrog me me ntawm sodium carbonate, sodium chloride thiab lwm yam ntaub ntawv flux, thiab ces calcined ntawm qhov kub ntawm 900-1200 ° C. Tom qab crushing thiab particle loj kev faib thiab proportioning, cov flux calcined khoom yog tau. . Lub permeability ntawm cov khoom flux calcined yog nce ntau, uas yog ntau tshaj 20 npaug ntawm cov khoom qhuav. Cov khoom flux calcined feem ntau yog dawb, thiab lub teeb liab thaum Fe2O3 cov ntsiab lus siab lossis cov flux me me.

Diatomite lim pab lim cov nyhuv

Cov nyhuv lim dej ntawm diatomite lim pab feem ntau yog ua los ntawm peb txoj haujlwm hauv qab no:

1.Sieving nyhuv

Qhov no yog cov nyhuv lim dej. Thaum cov kua ntws los ntawm lub ntiaj teb diatomaceous, qhov pores ntawm lub ntiaj teb diatomaceous yog me dua li qhov me me ntawm cov impurity hais, kom cov impurity hais tsis tuaj yeem hla thiab cuam tshuam. Cov nyhuv no hu ua sieving. Qhov tseeb, qhov saum npoo ntawm lub ncuav mog qab zib lim tuaj yeem suav tias yog lub ntsej muag sieve nrog qhov sib npaug nruab nrab qhov pore loj. Thaum txoj kab uas hla ntawm cov khoom tsis yog tsawg tshaj li (los yog me ntsis tsawg dua) txoj kab uas hla ntawm lub pores ntawm lub diatomite, cov khoom hais yuav "sifted los ntawm lub ncua kev kawm ntawv". Cais tawm, ua si lub luag hauj lwm ntawm qhov chaw pom.
2. Cov nyhuv tob

Cov nyhuv tob yog qhov khaws cia ntawm qhov pom tob. Hauv kev sib sib zog nqus pom, cov txheej txheem sib cais tsuas yog tshwm sim hauv "sab hauv" ntawm qhov nruab nrab. Ib feem ntawm cov impurity me me uas nkag mus rau saum npoo ntawm lub ncuav mog qab zib lim yog thaiv los ntawm cov kab tortuous microporous hauv lub ntiaj teb diatomaceous thiab cov pores me me hauv cov ncuav mog qab zib lim. Cov kab no feem ntau me dua li cov micropores ntawm lub ntiaj teb diatomaceous. Thaum cov khoom tsoo cov phab ntsa ntawm cov channel, lawv tuaj yeem tso cov kua dej tawm. Txawm li cas los xij, seb nws tuaj yeem ncav cuag qhov no yog nyob ntawm lub zog inertial thiab tsis kam ntawm cov khoom. Qhov sib npaug, hom kev cuam tshuam thiab kev tshuaj ntsuam no zoo ib yam, ob qho tib si yog cov cuab yeej siv tshuab. Lub peev xwm los lim tawm cov khoom siv yog qhov tseem ceeb tsuas yog cuam tshuam nrog qhov sib txheeb loj thiab cov duab ntawm cov khoom thiab qhov pores.

3.Adsorption

Cov nyhuv adsorption yog txawv kiag li los ntawm cov saum toj no ob filtration mechanisms. Cov nyhuv no tuaj yeem suav tau tias yog qhov kev nyiam ntawm electrokinetic, uas feem ntau yog nyob ntawm cov khoom ntawm cov khoom thiab cov diatomaceous lub ntiaj teb nws tus kheej. Thaum cov khoom me me nrog cov pores hauv lub ntiaj teb diatomaceous sib tsoo rau ntawm qhov chaw sab hauv ntawm lub ntiaj teb ntxeem tau diatomaceous, lawv tau nyiam los ntawm cov nqi sib txawv, los yog cov khoom sib txuas ua ke los ua pawg thiab ua raws li lub ntiaj teb diatomaceous. Cov no yog tag nrho cov nyhuv adsorption.

Cov nyhuv adsorption yog qhov nyuaj dua li ob qhov teebmeem dhau los. Nws yog feem ntau ntseeg tias yog vim li cas vim li cas cov khoom me me tshaj qhov pore txoj kab uas hla yog daig yog vim li cas:

(1) Intermolecular rog (tseem hu ua van der Waals attraction), suav nrog dipole mus tas li, induced dipole thiab instant dipole;

(2) Lub neej ntawm Zeta muaj peev xwm;

(3) Ion txauv txheej txheem.