nkhani

     Thandizo la sefa ya Diatomiteali ndi mawonekedwe abwino a microporous, adsorption performance ndi anti-compression performance, zomwe sizimangopangitsa kuti madzi osefedwa azitha kupeza bwino, komanso amasefa zolimba zolimba kuti ziwoneke bwino.

     Dziko la Diatomaceousndi depositza zotsalira za diatoms zakale za cell imodzi. Makhalidwe ake: kulemera kopepuka, porous, mphamvu yayikulu, kukana kuvala, kutchinjiriza, kutsekereza kutentha, kutsatsa ndi kudzaza ndi zina zabwino kwambiri. Ali ndi kukhazikika kwamankhwala. Ndizinthu zofunikira zamafakitale monga kutchinjiriza kutentha, kugaya, kusefera, kutsatsa, anti-coagulation, demoulding, kudzaza, chonyamulira ndi zina zotero. Itha kugwiritsidwa ntchito kwambiri m'mafakitale monga zitsulo, mafakitale opanga mankhwala, mphamvu yamagetsi, ulimi, feteleza, zomangira ndi zinthu zotchinjiriza. Itha kugwiritsidwanso ntchito ngati zodzaza mafakitale zamapulasitiki, mphira, zoumba, ndi kupanga mapepala.

Gulu lothandizira zosefera za Diatomite Zothandizira zosefera za Diatomite zimagawidwa m'zinthu zouma, zopangidwa ndi calcined ndi zinthu zopangidwa ndi flux calcined malinga ndi njira zosiyanasiyana zopangira.

① Zowuma Zowuma za silika zotsukidwa, zowumitsidwa kale komanso zopunthidwa zimawumitsidwa pa kutentha kwa 600-800 ° C, kenako ndikupuntha. Mankhwalawa ali ndi kukula kwa tinthu tating'ono ndipo ndi oyenera kusefera mwatsatanetsatane. Nthawi zambiri amagwiritsidwa ntchito molumikizana ndi zida zina zosefera. The youma mankhwala makamaka kuwala chikasu, komanso yamkaka woyera ndi kuwala imvi.

②Zopangidwa ndi calcined Zida zoyeretsedwa, zouma ndi zophwanyidwa za diatomite zimadyetsedwa mu uvuni wozungulira, wowotchedwa pa kutentha kwa 800-1200 ° C, kenako n'kuphwanyidwa ndikugawidwa kuti apeze mankhwala opangidwa ndi calcined. Poyerekeza ndi mankhwala youma, permeability mankhwala calcined ndi kuposa katatu apamwamba. Zopangira calcined nthawi zambiri zimakhala zofiira.

③Flux calcined mankhwalaPambuyo pa kuyeretsedwa, kuyanika ndi kuphwanya, zida za diatomite zimawonjezeredwa ndi kanyumba kakang'ono ka sodium carbonate, sodium kolorayidi ndi zinthu zina zotuluka, ndiyeno calcined pa kutentha kwa 900-1200 ° C. Pambuyo kuphwanya ndi tinthu kukula gulu ndi proportioning, ndi flux calcined mankhwala analandira. . The permeability wa flux calcined mankhwala akuchulukirachulukira, amene ali oposa 20 kuposa mankhwala youma. Zopangidwa ndi flux calcined nthawi zambiri zimakhala zoyera, komanso pinki yopepuka pamene zinthu za Fe2O3 ndizokwera kapena kuchuluka kwa kutulutsa kumakhala kochepa.

Diatomite fyuluta aid sefa zotsatira

Zosefera za diatomite zosefera zimathandizira makamaka kudzera m'magawo atatu awa:

1.Sieving zotsatira

Izi ndi zosefera pamwamba. Madziwo akamadutsa m'dziko la diatomaceous, ma pores a dziko lapansi a diatomaceous amakhala ochepa kuposa kukula kwa tinthu tazonyansa, kotero kuti zonyansazo sizingadutse ndikulandidwa. Izi zimatchedwa sieving. Ndipotu pamwamba pa keke fyuluta akhoza kuonedwa ngati sieve pamwamba ndi ofanana pafupifupi pore kukula. Pamene m'mimba mwake mwa tinthu tating'onoting'ono tating'onoting'ono (kapena pang'ono pang'ono) m'mimba mwake mwa pores wa diatomite, tinthu tating'onoting'ono tidzakhala "kusefa kuchokera kuyimitsidwa". Patulani, sewerani kusefa pamwamba.
2. Zotsatira zakuya

Kuzama kwake ndiko kusunga kwa kusefera kozama. Mu kusefa kwambiri, njira yolekanitsa imangochitika "mkati" mwa sing'anga. Gawo la tinthu tating'onoting'ono todetsa tomwe timalowa pamwamba pa keke ya fyuluta timatsekeredwa ndi ma tortuous microporous channels mkati mwa dziko lapansi la diatomaceous ndi pores ang'onoang'ono mkati mwa keke ya fyuluta. Tinthu tating'onoting'ono tamtunduwu nthawi zambiri timakhala tating'ono kwambiri kuposa ma micropores a dziko lapansi la diatomaceous. Pamene particles kugunda khoma la njira, iwo akhoza kusiya madzi otaya. Komabe, ngati zingatheke kufika pamenepa zimadalira mphamvu ya inertial ndi kukana kwa particles. Kulinganiza, kutsekereza kwamtunduwu ndikuwunika ndizofanana m'chilengedwe, zonse zimakhala zamakina. Kutha kusefa tinthu tating'onoting'ono timangogwirizana ndi kukula kwake ndi mawonekedwe a tinthu tolimba ndi pores.

3.Adsorption

Zotsatira za adsorption ndizosiyana kwambiri ndi njira ziwiri zomwe zili pamwambazi. Izi zitha kuwonedwa ngati chokoka cha electrokinetic, chomwe chimadalira kwambiri mawonekedwe apamwamba a tinthu tating'onoting'ono komanso dziko lapansi la diatomaceous. Pamene tinthu tating'ono ting'ono pores mkati diatomaceous lapansi kugundana pamwamba padziko porous diatomaceous lapansi, iwo amakopeka ndi milandu zosiyana, kapena particles kukopana kupanga masango ndi kumamatira ku dziko diatomaceous. Zonsezi ndi zotsatira za adsorption.

Zotsatira za adsorption ndizovuta kwambiri kuposa zotsatira ziwiri zam'mbuyo. Amakhulupirira kuti chifukwa chomwe tinthu tating'onoting'ono tomwe timatsekera m'mimba mwake ndi chifukwa cha:

(1) Intermolecular mphamvu (omwe amatchedwanso van der Waals attraction), kuphatikizapo dipole okhazikika, dipole ndi dipole pompopompo;

(2) Kukhalapo kwa Zeta kuthekera;

(3) Njira yosinthira ion.