Kaolin yakajairika yevhu chicherwa munyika zvakasikwa.Ndiyo mineral inobatsira ye white pigment, saka, kuchena indekisi yakakosha inokonzera kukosha kwekaolin.Iko kune iron, organic matter, rima zvinhu uye zvimwe tsvina mu kaolin.Kusachena uku kuchaita kuti kaolin ioneke mavara akasiyana, ichipesvedzera kuchena.Saka kaolin inofanira kubvisa tsvina.
Nzira dzakajairika dzekuchenesa kaolin dzinosanganisira kupatsanurwa kwegiravhiti, kupatsanurwa kwemagineti, kutenderera, kurapwa kwemakemikari, nezvimwe. Zvinotevera ndizvo zvinozivikanwa nzira dzekuchenesa kaolin:
1. Kuparadzaniswa kwegiravhiti
Iyo giravhiti yekuparadzanisa nzira inonyanya KUSHANDISA density musiyano pakati gangue chicherwa uye kaolin kubvisa yakakwirira-density tsvina chiedza Organic zvinhu, quartz, feldspar uye zvinhu zvine iron, titanium uye manganese, kuitira kuderedza pesvedzero tsvina pakuchena.Centrifugal concentrators inowanzoshandiswa kubvisa kusvibiswa kwepamusoro.Iro boka re hydrocyclone rinogonawo kushandiswa kupedzisa kushambidza uye kuongorora kwekaolin mukugadzirisa, izvo zvisingagoni kungozadzisa chinangwa chekugeza uye kugadzika, asiwo kubvisa zvimwe tsvina, iyo ine kukosha kwekushanda kwakanaka.
Zvisinei, zvakaoma kuwana zvigadzirwa zvekaolin zvakagadzirirwa nekugadzirisa nzira, uye zvigadzirwa zvekupedzisira zvinofanirwa zvinofanira kuwanikwa nekuparadzaniswa kwemagineti, flotation, calcination nedzimwe nzira.
2. Magnetic kupatsanurwa
Anenge ese kaolin ores ane shoma shoma yesimbi, kazhinji 0.5-3%, kunyanya magnetite, ilmenite, siderite, pyrite uye kumwe kusvibiswa kwemavara.Magnetic separation inonyanya KUSHANDISA musiyano wemagineti pakati pe gangue mineral nekaolin kubvisa tsvina ine mavara iyi.
Kune magnetite, ilmenite uye mamwe akasimba magineti maminerari kana simbi filings yakasanganiswa mukugadzirisa maitiro, kushandisa magineti yekuparadzanisa nzira yekuparadzanisa kaolin inonyanya kushanda.Kune asina simba remagineti emaminerari, kune nzira mbiri huru: imwe ndeyekugocha, kuita kuti ive yakasimba magineti iron oxide minerals, zvino inotakura pane kupatsanurwa kwemagineti;Imwe nzira ndeye kushandisa yakakwira gradient magineti yekuparadzanisa nzira yekuparadzanisa magineti.Nokuti kupatsanurwa kwemagineti hakudi kushandiswa kwemakemikari emakemikari, nharaunda haizokonzeri kusvibiswa, saka mukuita kwekusaita - metallic mineral processing inonyanya kushandiswa.Iyo magnetic separation method yakagadzirisa zvinobudirira dambudziko rekushandisa uye kushandiswa kwekaolin yakaderera yegiredhi iyo isiri yezvokutengeserana kwemigodhi yakakosha nekuda kwehuwandu hwehuwandu hwesimbi.
Zvisinei, zvakaoma kuwana yakakwirira giredhi kaolin zvigadzirwa kubudikidza magineti kupatsanurwa chete, uye kemikari kurapwa uye mamwe maitiro zvinodiwa kuti mberi kuderedza zviri simbi mune kaolin zvigadzirwa.
3. Kuyerera
Iyo nzira yekuyangarara inonyanya kushandisa mutsauko wenyama nemakemikari pakati pe gangue zvicherwa nekaolin kubata iyo mbishi kaolin ore ine tsvina yakawanda uye yakaderera kuchena, uye kubvisa tsvina ine iron, titanium uye kabhoni, kuti uone kushandiswa kwakadzama kweyakaderera-giredhi. kaolin resources.
Kaolin inofananidzira ivhu revhu.Kusachena kwakadai sesimbi netitanium kunowanzoiswa muzvidimbu zvekaolin, saka simbi mbishi inofanira kukuyiwa kusvika pamwero wakati wekunaka.Kaolinite inowanzo shandiswa flotation nzira ye Ultra yakanaka particle flotation nzira, kaviri fluid layer flotation nzira uye yakasarudzwa flocculation flotation nzira, nezvimwewo.
Flotation inogona zvinobudirira kuwedzera kuchena kwekaolin, nepo kukanganisa kuri kuti inoda makemikari reagents uye inodhura zvakanyanya, nyore kukonzera kusvibiswa.
4. Kurapa kwemakemikari
Kemikari leaching: kumwe kusvibiswa mu kaolin kunogona kunyungudutswa zvakasarudzwa ne sulfuric acid, hydrochloric acid, nitric acid uye zvimwe zvinobvisa tsvina kubvisa tsvina.Iyi nzira inogona kushandiswa kubvisa hematite, limonite uye siderite kubva pasi giredhi kaolin.
Kemikari bleaching: tsvina iri mu kaolin inogona kuve ne oxidized kuita soluble substances kuburikidza ne bleaching, inogona kugezwa nekubviswa kuti ivandudze kuchena kwekaolin products.Zvakadaro, kucheneswa kwemakemikari kunodhura uye kunowanzo shandiswa mu kaolin concentrate, inoda kumwe kucheneswa mushure mekusvibiswa.
Kugocha kucheneswa: mutsauko wemakemikari ekuumbwa uye reactivity pakati petsvina uye kaolin inogona kushandiswa kugocha magineti, kugocha kwepamusoro-tembiricha kana chlorination kugocha kubvisa tsvina yakaita sesimbi, kabhoni uye sulfide mu kaolin.Iyi nzira inogona kuvandudza kemikari reactivity yezvigadzirwa zve calcined, kuvandudza zvakanyanya kuchena kwekaolin, uye kuwana zvigadzirwa zvekaolin zvepamusoro.Asi kukanganisa kwekucheneswa kwekugocha ndeyekuti kushandiswa kwesimba kwakakura, kuri nyore kukonzera kusvibiswa kwezvakatipoteredza.
Kuburikidza nemichina imwe chete zvakaoma kuwana high grade kaolin concentrates.Naizvozvo, mukugadzirwa chaiko, isu tinokupa zano kuti usarudze akakodzera anogadzira mamineral processing equipment.Kuita mamineral processing kuyedza uye kushandisa akawanda ekugadzirisa matekinoroji kuti uwedzere kunaka kweKaolin.
Nguva yekutumira: Kubvumbi-06-2020