Kaolin ivhu rinowanikwa munyika yechisikigo. Ndiyo mineral inobatsira pakugadzira pigment chena, saka, kuchena chiratidzo chakakosha chinokanganisa kukosha kwekaolin. Kune simbi, zvinhu zvakasikwa, zvinhu zvakasviba nezvimwe zvisina kuchena mukaolin. Tsvina iyi inoita kuti kaolin ionekwe nemavara akasiyana, zvichikanganisa kuchena. Saka kaolin inofanira kubvisa tsvina.
Nzira dzakajairika dzekuchenesa kaolin dzinosanganisira kupatsanurwa kwesimba rinokwevera pasi, kupatsanurwa kwemagineti, kuyerera, kurapwa nemakemikari, nezvimwewo. Idzi ndidzo nzira dzakajairika dzekuchenesa kaolin:
1. Kupatsanurwa kwesimba regiravhiti
Nzira yekuparadzanisa simba remagetsi inoSHANDISA musiyano wehuwandu pakati pemaminerari egangue nekaolin kubvisa tsvina yakawanda ye light organic matter, quartz, feldspar nezvimwe zvinhu zvine iron, titanium uye manganese, kuitira kuderedza simba retsvina pakuchena kwayo. Ma centrifugal concentrators anowanzo shandiswa kubvisa tsvina yakawanda. Boka re hydrocyclone rinogonawo kushandiswa kupedzisa kusukwa nekuongorora kaolin mukuita kwekusarudza, izvo zvisingangogone kuzadzisa chinangwa chekusuka nekuongorora, asiwo kubvisa tsvina, iyo ine kukosha kwakanaka kwekushandiswa.
Zvisinei, zvakaoma kuwana zvigadzirwa zvekaolin zvakakodzera nenzira yekupatsanura, uye zvigadzirwa zvekupedzisira zvakakodzera zvinofanira kuwanikwa nekupatsanurana kwemagineti, kupatsanura, kupinza calcium mumasero nedzimwe nzira.
2. Kupatsanurwa kwemagineti
Matombo ese e kaolin ane simbi shoma, kazhinji 0.5-3%, kunyanya magnetite, ilmenite, siderite, pyrite nezvimwe zvinhu zvisina kuchena. Kupatsanurwa kwemagineti KUNOSHANDISA musiyano wemagineti uripo pakati pe gangue mineral ne kaolin kubvisa tsvina iyi ine mavara.
Kune magnetite, ilmenite nezvimwe zvicherwa zvine simba zvemagnetic kana simbi zvakasanganiswa mukugadzirisa, kushandisa nzira yekuparadzanisa magnetic kuparadzanisa kaolin kunoshanda zvakanyanya. Kune zvicherwa zvisina simba zvemagnetic, kune nzira mbiri huru: imwe ndeyekugocha, kuita kuti ive magnetic iron oxide minerals yakasimba, wobva waenderera mberi nekuparadzanisa magnetic; Imwe nzira ndeyekushandisa nzira yekuparadzanisa magnetic field magnetic field ine gradient ye magnetic field. Nekuti magnetic separation haidi kushandiswa kwemakemikari, nharaunda haizokonzere kusvibiswa, saka mukuita kwe non-metallic mineral processing inoshandiswa zvakanyanya. Magnetic separation method yakagadzirisa zvinobudirira dambudziko rekushandiswa nekushandiswa kwe low grade kaolin iyo isiri yekutengeserana mumigodhi nekuda kwehuwandu hwakawanda hwesimbi.
Zvisinei, zvakaoma kuwana zvigadzirwa zvekaolin zvemhando yepamusoro nekupatsanurwa kwemagineti chete, uye kurapwa nemakemikari nedzimwe nzira zvinodiwa kuti kuderedze huwandu hwesimbi muzvigadzirwa zvekaolin.
3. Kuyangarara
Nzira yekuyangarara inonyanya kushandisa musiyano wepanyama nemakemikari pakati pezvicherwa zvegangue nekaolin kurapa tsvina yakawanda mumafuta ekaolin asina kucheneswa uye kuchena kwakaderera, uye kubvisa tsvina ine iron, titanium nekabhoni, kuitira kuti zviwanikwe kushandiswa kwakazara kwezviwanikwa zvekaolin zvemhando yepasi.
Kaolin imineral yevhu yakajairika. Kusachena kwakadai sesimbi netitanium kunowanzoiswa muzvikamu zvekaolin, saka simbi isina kucheneswa inofanira kukuyiwa kusvika padanho rakati rekuti simbi. Kaolinite ndiyo nzira inowanzoshandiswa yekutsvedza pakugadzira zvidimbu zvidiki, nzira yekutsvedza pazvikamu zviviri uye nzira yekutsvedza pakusarudza flocculation, nezvimwewo.
Kuyerera kwemvura kunogona kuwedzera kuchena kwekaolin, nepo dambudziko riripo nderekuti inoda mishonga inogadzirisa makemikari uye inodhura zvakanyanya, zvichiita kuti ikwanise kukonzera kusvibiswa.
4. Kurapa nemakemikari
Kubviswa kwetsvina nemakemikari: mamwe tsvina mu kaolin anogona kunyungudutswa ne sulfuric acid, hydrochloric acid, nitric acid nezvimwe zvinobvisa tsvina. Nzira iyi inogona kushandiswa kubvisa hematite, limonite uye siderite kubva mu kaolin yemhando yepasi.
Kuchenesa ganda nemakemikari: tsvina iri mu kaolin inogona kuoxidized kuita zvinhu zvinonyunguduka kuburikidza nekuichenesa, iyo inogona kugezwa uye kubviswa kuti ive nani kuchena kwezvigadzirwa zve kaolin. Zvisinei, kuchena nemakemikari kunodhura zvakanyanya uye kunowanzo shandiswa mu kaolin concentrate, iyo inoda kucheneswa zvakanyanya mushure mekubviswa tsvina.
Kucheneswa kwekaolin: musiyano uripo pakati pemakemikoro uye reactivity pakati petsvina nekaolin unogona kushandiswa pakugocha nemagnetization, kugocha nekupisa kwakanyanya kana kugocha nechlorination kubvisa tsvina yakaita sesimbi, kabhoni nesulfide mu kaolin. Nzira iyi inogona kuvandudza reactivity yemakemikari yezvigadzirwa zvakakanyiwa, kuvandudza zvikuru kuchena kwekaolin, uye kuwana zvigadzirwa zvekaolin zvepamusoro-soro. Asi chakaipa chekugocha ndechekuti kushandiswa kwesimba kwakawanda, zviri nyore kukonzera kusvibiswa kwezvakatipoteredza.
Kuburikidza netekinoroji imwe chete zvakaoma kuwana kaolin concentrates yepamusoro. Saka, mukugadzira chaiko, tinokukurudzira kuti usarudze mugadziri wezvishandiso zvekugadzirisa zvicherwa ane hunyanzvi. Kuita kuyedza kwekugadzirisa zvicherwa uye kushandisa matekinoroji akasiyana-siyana ekugadzirisa kuti uwedzere kunaka kweKaolin.
Nguva yekutumira: Kubvumbi-06-2020