Kaolin yog ib qho av nplaum ntxhia hauv ntiaj teb ntuj.Nws yog cov ntxhia muaj txiaj ntsig zoo rau cov xim dawb, yog li ntawd, whiteness yog ib qho tseem ceeb Performance index influencing tus nqi ntawm kaolin.Muaj hlau, organic teeb meem, cov khoom tsaus thiab lwm yam impurities hauv kaolin.Cov impurities no yuav ua rau kaolin tshwm cov xim sib txawv, cuam tshuam rau cov xim dawb.Yog li kaolin yuav tsum tshem tawm cov impurities.
Cov txheej txheem purification feem ntau ntawm kaolin suav nrog kev sib cais sib nqus, sib nqus sib nqus, flotation, tshuaj kho mob, thiab lwm yam. Cov hauv qab no yog cov txheej txheem purification ntawm kaolin:
1. Lub ntiajteb txawj nqus sib cais
Txoj kev sib cais lub ntiajteb txawj nqus feem ntau yog siv qhov sib txawv ntawm qhov sib txawv ntawm gangue ntxhia thiab kaolin kom tshem tawm cov impurities high-density impurities ntawm lub teeb organic teeb meem, quartz, feldspar thiab cov ntsiab lus uas muaj hlau, titanium thiab manganese, thiaj li yuav txo tau cov impurities ntawm lub whiteness.Centrifugal concentrators feem ntau yog siv los tshem tawm cov impurities siab ceev.Cov pab pawg hydrocyclone kuj tuaj yeem siv los ua kom tiav kev ntxuav thiab tshuaj xyuas kaolin hauv cov txheej txheem ntawm kev txheeb xyuas, uas tuaj yeem ua tsis tau tsuas yog ua tiav lub hom phiaj ntawm kev ntxuav thiab muab qhab nia, tab sis kuj tshem tawm qee qhov impurities, uas muaj qhov zoo ntawm daim ntawv thov.
Txawm li cas los xij, nws yog qhov nyuaj kom tau txais cov khoom tsim nyog kaolin los ntawm txoj kev sib cais, thiab cov khoom tsim nyog kawg yuav tsum tau txais los ntawm kev sib nqus sib nqus, flotation, calcination thiab lwm yam.
2. Sib nqus sib cais
Yuav luag tag nrho cov kaolin ores muaj me me ntawm cov hlau ore, feem ntau 0.5-3%, feem ntau yog magnetite, ilmenite, siderite, pyrite thiab lwm yam xim impurities.Sib nqus sib cais tsuas yog siv qhov sib nqus sib nqus ntawm gangue ntxhia thiab kaolin kom tshem tawm cov xim tsis huv.
Rau cov hlau nplaum, ilmenite thiab lwm yam muaj zog hlau nplaum los yog hlau filings sib xyaw hauv cov txheej txheem ua, siv txoj kev sib nqus sib nqus kom cais kaolin yog qhov zoo dua.Rau cov hlau nplaum tsis muaj zog, muaj ob txoj hauv kev tseem ceeb: ib qho yog ci, ua kom nws ua kom muaj zog hlau nplaum hlau oxide minerals, tom qab ntawd nqa ntawm kev sib nqus sib nqus;Lwm txoj kev yog siv high gradient magnetic field magnetic sib cais txoj kev sib nqus sib nqus.Vim tias kev sib nqus sib nqus tsis tas yuav tsum siv cov tshuaj siv tshuaj, ib puag ncig yuav tsis ua rau muaj kuab paug, yog li nyob rau hauv cov txheej txheem ntawm cov hlau tsis muaj hlau yog siv ntau dua.Txoj kev sib nqus sib nqus tau zoo daws qhov teeb meem ntawm kev siv thiab siv cov kaolin qib qis uas tsis yog kev lag luam mining nqi vim muaj cov ntsiab lus siab ntawm cov hlau ore.
Txawm li cas los xij, nws yog qhov nyuaj kom tau txais cov khoom lag luam kaolin qib siab los ntawm kev sib nqus sib nqus ib leeg, thiab kev kho tshuaj thiab lwm yam txheej txheem yuav tsum tau ua kom txo qis cov ntsiab lus ntawm cov hlau hauv cov khoom kaolin.
3. Flotation
Txoj kev flotation feem ntau yog siv lub cev thiab tshuaj sib txawv ntawm gangue minerals thiab kaolin los kho cov nqaij nyug kaolin ore nrog ntau impurities thiab qis whiteness, thiab tshem tawm cov impurities uas muaj hlau, titanium thiab carbon, thiaj li kom paub txog kev siv cov qib qis. kaolin cov peev txheej.
Kaolin yog ib qho av nplaum ntxhia.Cov impurities xws li hlau thiab titanium feem ntau embedded nyob rau hauv kaolin hais, yog li cov raw ore yuav tsum tau av rau ib tug tej yam kev mob ntawm fineness.Kaolinite feem ntau siv flotation txoj kev rau ultra nplua particle flotation txoj kev, ob chav kua txheej flotation txoj kev thiab xaiv flocculation flotation txoj kev, thiab lwm yam.
Flotation tuaj yeem ua kom cov xim dawb ntawm kaolin, thaum qhov tsis zoo yog tias nws xav tau cov tshuaj reagents thiab raug nqi ntau, yooj yim ua rau muaj kuab paug.
4. Tshuaj kho mob
Tshuaj leaching: qee qhov impurities hauv kaolin tuaj yeem raug xaiv los ntawm sulfuric acid, hydrochloric acid, nitric acid thiab lwm yam tshuaj tua kab mob kom tshem tawm cov impurities.Txoj kev no tuaj yeem siv los tshem tawm hematite, limonite thiab siderite los ntawm qib qis kaolin.
Tshuaj bleaching: cov impurities nyob rau hauv kaolin tuaj yeem oxidized rau hauv cov tshuaj soluble los ntawm cov tshuaj dawb, uas tuaj yeem ntxuav thiab tshem tawm los txhim kho cov khoom dawb ntawm kaolin.Txawm li cas los xij, tshuaj bleaching kuj kim heev thiab feem ntau yog siv hauv kaolin concentrate, uas xav tau kev lim dej ntxiv tom qab decontamination.
roasting purification: qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg thiab reactivity ntawm impurities thiab kaolin yuav siv tau rau magnetization roasting, high-temperature roasting los yog chlorination roasting kom tshem tawm impurities xws li hlau, carbon thiab sulfide nyob rau hauv kaolin.Txoj kev no tuaj yeem txhim kho cov tshuaj reactivity ntawm calcined cov khoom, zoo heev txhim kho lub whiteness ntawm kaolin, thiab tau txais high-qib kaolin khoom.Tab sis qhov tsis zoo ntawm roasting purification yog qhov kev siv hluav taws xob loj, yooj yim ua rau muaj kuab paug ib puag ncig.
Los ntawm ib qho thev naus laus zis yog qhov nyuaj kom tau txais qib siab kaolin concentrates.Yog li ntawd, nyob rau hauv qhov tseeb ntau lawm, peb xav kom koj xaiv ib tug tsim nyog mineral ua khoom chaw tsim tshuaj paus.Ua cov kev sim ua cov ntxhia thiab siv ntau cov thev naus laus zis los ua kom cov Kaolin zoo.
Post lub sij hawm: Apr-06-2020