Kaolin ndi wamba dongo mchere mu chilengedwe. Ndi mchere wothandiza wa pigment yoyera, choncho, kuyera ndi chizindikiro chofunikira chomwe chimapangitsa mtengo wa kaolin. Mu kaolin muli chitsulo, zinthu zachilengedwe, zinthu zakuda ndi zonyansa zina. Zonyansa izi zipangitsa kaolin kuwoneka mitundu yosiyanasiyana, kupangitsa kuyera kwake. Choncho kaolin ayenera kuchotsa zonyansazo.
Wamba kuyeretsedwa njira kaolin monga mphamvu yokoka kulekana, maginito kulekana, kuyandama, mankhwala mankhwala, etc. Zotsatirazi ndi wamba kuyeretsedwa njira kaolin:
1. Kulekanitsa mphamvu yokoka
The mphamvu yokoka kulekana njira makamaka AMAGWIRITSA NTCHITO kusiyana kachulukidwe gangue mchere ndi kaolin kuchotsa mkulu-kachulukidwe zonyansa za kuwala organic kanthu, quartz, feldspar ndi zinthu munali chitsulo, titaniyamu ndi manganese, kuti achepetse chikoka cha zosafunika pa whiteness. Ma centrifugal concentrators nthawi zambiri amagwiritsidwa ntchito kuchotsa zinyalala zazikulu. Gulu la hydrocyclone lingagwiritsidwenso ntchito kutsiriza kutsuka ndi kuwunika kwa kaolin pokonza, zomwe sizingangokwaniritsa cholinga chotsuka ndi kuyika, komanso kuchotsa zonyansa zina, zomwe zimakhala ndi ntchito yabwino.
Komabe, n'zovuta kupeza oyenerera mankhwala kaolin ndi njira reparation, ndi mankhwala oyenerera omaliza ayenera analandira ndi maginito kulekana, flotation, calcination ndi njira zina.
2. Kupatukana kwa maginito
Pafupifupi miyala yonse ya kaolin imakhala ndi chitsulo chochepa, nthawi zambiri 0.5-3%, makamaka magnetite, ilmenite, siderite, pyrite ndi zonyansa zina zopaka utoto. Kulekanitsa maginito makamaka AMAGWIRITSA NTCHITO kusiyana kwa maginito pakati pa gangue mineral ndi kaolin kuchotsa zonyansa zamitundu izi.
Pakuti magnetite, ilmenite ndi ena amphamvu maginito mchere kapena chitsulo filings kusakaniza mu ndondomeko processing, ntchito maginito kulekana njira kupatukana kaolin ndi aluso. Pakuti ofooka maginito mchere, pali njira ziwiri zazikulu: imodzi ndi kuwotcha, kukhala wamphamvu maginito chitsulo okusayidi mchere, ndiye amanyamula pa maginito kulekana; Njira ina ndikugwiritsa ntchito njira yolekanitsa ya maginito yamphamvu kwambiri yolekanitsa maginito. Chifukwa kupatukana kwa maginito sikufuna kugwiritsa ntchito mankhwala opangira mankhwala, chilengedwe sichidzayambitsa kuipitsa, choncho popanga zitsulo zopanda mchere zimagwiritsidwa ntchito kwambiri. Njira yolekanitsa maginito yathetsa bwino vuto la kugwiritsira ntchito ndi kugwiritsira ntchito kaolin yotsika kwambiri yomwe ilibe phindu la migodi yamalonda chifukwa cha kuchuluka kwa chitsulo.
Komabe, n'zovuta kupeza mkulu kalasi kaolin mankhwala ndi maginito kulekana yekha, ndi mankhwala mankhwala ndi njira zina zofunika kuchepetsa zili chitsulo mu mankhwala kaolin.
3. Kuyandama
Njira yoyandama makamaka imagwiritsa ntchito kusiyana kwa thupi ndi mankhwala pakati pa mchere wa gangue ndi kaolin pochiza miyala yaiwisi ya kaolin yokhala ndi zonyansa zambiri komanso kuyera pang'ono, ndikuchotsa zonyansa zomwe zili ndi chitsulo, titaniyamu ndi kaboni, kuti azindikire kugwiritsa ntchito mokwanira kwa otsika. kaolin zothandizira.
Kaolin ndi mmene dongo mchere. Zonyansa monga chitsulo ndi titaniyamu nthawi zambiri zimayikidwa mu tinthu tating'onoting'ono ta kaolin, motero miyala yaiwisiyo iyenera kupedwa pamlingo wina wake. Kaolinite ambiri ntchito njira flotation kwa kopitilira muyeso wabwino tinthu flotation njira, kawiri madzimadzi wosanjikiza njira flotation ndi kusankha flocculation njira flotation, etc.
Kuyandama kumatha kuonjezera kuyera kwa kaolin, pomwe kuipa kwake ndikuti kumafunikira ma reagents amankhwala ndipo kumawononga ndalama zambiri, kupangitsa kuipitsa mosavuta.
4. Chithandizo chamankhwala
Chemical leaching: zonyansa zina mu kaolin akhoza kusankha kusungunuka ndi sulfuric acid, hydrochloric acid, asidi nitric ndi leaching agents kuchotsa zosafunika. Njirayi ingagwiritsidwe ntchito kuchotsa hematite, limonite ndi siderite kuchokera ku kaolin otsika.
bleaching Chemical: zonyansa mu kaolin akhoza oxidized kukhala sungunuka zinthu kudzera bleaching, amene akhoza kutsukidwa ndi kuchotsedwa kusintha kuyera kwa kaolin mankhwala. Komabe, kuthirira mankhwala kumawononga ndalama zambiri ndipo kaŵirikaŵiri amagwiritsidwa ntchito mu kaolin concentrate, yomwe imafunika kuyeretsedwanso pambuyo pochotsedwa.
Kuwotcha kuyeretsedwa: kusiyana kwa mankhwala ndi reactivity pakati zonyansa ndi kaolin angagwiritsidwe ntchito magnetization kuwotcha, kutentha kwambiri Kuwotcha kapena chlorination Kuwotcha kuchotsa zosafunika monga chitsulo, carbon ndi sulfide mu kaolin. Njira imeneyi akhoza kusintha reactivity mankhwala a mankhwala calcined, kwambiri kusintha whiteness wa kaolin, ndi kupeza apamwamba kalasi mankhwala kaolin. Koma kuipa kwa kukuwotcha kuyeretsedwa ndikuti kugwiritsa ntchito mphamvu kumakhala kwakukulu, kosavuta kuwononga chilengedwe.
Kupyolera mu luso limodzi ndi zovuta kupeza mkulu kalasi kaolin amaganizira. Choncho, pakupanga kwenikweni, tikukupemphani kuti musankhe wopanga zida zopangira mchere woyenerera. Kuchita kuyezetsa mchere processing ndi kugwiritsa ntchito matekinoloje angapo processing kuonjezera khalidwe la Kaolin.
Nthawi yotumiza: Apr-06-2020