nkhani

Thandizo la sefa ya Diatomite
Thandizo losefera la Diatomite lili ndi mawonekedwe abwino a microporous, magwiridwe antchito adsorption komanso anti compression performance. Iwo sangakhoze kokha kupanga madzi osasankhidwa kupeza bwino otaya mlingo chiŵerengero, komanso zosefera zabwino inaimitsidwa zolimba, kuonetsetsa momveka bwino. Diatomite ndi zotsalira za ma diatoms akale okhala ndi celled. Makhalidwe ake: kulemera kopepuka, porous, mphamvu yayikulu, kukana kuvala, kutchinjiriza, kutchinjiriza kwamafuta, kutsatsa ndi kudzaza, etc.
Diatomite ndi zotsalira za ma diatoms akale okhala ndi celled. Makhalidwe ake: kulemera kopepuka, porous, mphamvu yapamwamba, kukana kuvala, kutsekemera, kutsekemera kwa kutentha, kutsekemera ndi kudzaza, etc. Lili ndi kukhazikika kwa mankhwala. Ndizinthu zofunikira zamakampani zopangira kutentha, kugaya, kusefera, kutsatsa, anticoagulation, demoulding, kudzaza, chonyamulira, etc. Itha kugwiritsidwa ntchito kwambiri muzitsulo, makampani opanga mankhwala, mphamvu yamagetsi, ulimi, feteleza wamankhwala, zomangira, zinthu zopangira mafuta ndi mafakitale ena. Itha kugwiritsidwanso ntchito ngati mafakitale ogwira ntchito kudzaza mapulasitiki, mphira, zoumba, kupanga mapepala, etc.
Kusintha kwa Gulu
Thandizo losefera la Diatomite litha kugawidwa muzinthu zowuma, zopangidwa ndi calcined ndi zinthu zopangidwa ndi flux calcined molingana ndi njira zosiyanasiyana zopangira. [1]
① Zowuma
Zida zoyeretsedwa, zowuma ndi zosweka za silika zouma zimawumitsidwa pa 600 ~ 800 ° C ndikuphwanyidwa. Mankhwalawa ali ndi kukula kwa tinthu tating'ono ndipo ndi oyenera kusefera mwatsatanetsatane. Nthawi zambiri amagwiritsidwa ntchito limodzi ndi zida zina zosefera. Zambiri zouma zouma zimakhala zachikasu, komanso zamkaka zoyera komanso zotuwa. [1]
② Mankhwala owerengeka
Zida zoyeretsedwa, zouma ndi zophwanyidwa za diatomite zimadyetsedwa mu uvuni wa rotary, wotenthedwa pa 800 ~ 1200 ° C, kenako n'kuphwanyidwa ndi kusinthidwa kuti apeze mankhwala opangidwa ndi calcined. Poyerekeza ndi mankhwala youma, permeability wa mankhwala calcined ndi kuposa katatu apamwamba. Zogulitsa zowerengeka nthawi zambiri zimakhala zofiira. [1]
③ Flux calcined mankhwala
Zida zoyeretsedwa, zouma ndi zophwanyika za diatomite zimawonjezeredwa ndi kanyumba kakang'ono ka sodium carbonate, sodium chloride ndi zina zosungunula, zowerengeka pa 900 ~ 1200 ° C, zophwanyidwa ndi kudulidwa kuti zipeze kutuluka kwa calcined. The permeability wa flux calcined mankhwala mwachionekere chawonjezeka, kuposa 20 nthawi ya mankhwala youma. Zopangidwa ndi Flux calcined nthawi zambiri zimakhala zoyera, komanso pinki yopepuka pamene Fe2O3 ili ndi zambiri kapena mlingo wa flux ndi wochepa. [1]
Sefa
Zosefera za diatomite zosefera zimathandizira makamaka kudzera m'magawo atatu awa:
Sieving action
Uwu ndi mtundu wa kusefera pamwamba. Madziwo akamadutsa mu diatomite, pore ya diatomite ndi yaying'ono kuposa kukula kwa tinthu tonyansa, kotero kuti tinthu tating'onoting'ono sitingadutse ndikusungidwa. Izi zimatchedwa screening. M'malo mwake, pamwamba pa keke ya fyuluta imatha kuwonedwa ngati chophimba chokhala ndi kukula kofanana kwa pore. Pamene kukula kwa tinthu tating'onoting'ono sikuchepera (kapena pang'ono kuposa) kukula kwa ma pores a diatomite, tinthu tating'onoting'ono tidzakhala "kuwonetseredwa" kuchokera kuyimitsidwa, ndikusewera gawo la kusefera pamwamba. [2]
Zotsatira zakuya
Kuzama kwakuya ndikusunga zotsatira za kusefera kozama. Panthawi yosefera mozama, njira yolekanitsa imangochitika "mkati" wapakati. Tizilombo tating'ono tating'ono tomwe timadutsa pamwamba pa keke yosefera timatsekeredwa ndi njira za zigzag microporous mkati mwa diatomite ndi ma pores abwino kwambiri mkati mwa keke yosefera. Tinthu tating'onoting'ono tomwe timakhala tating'onoting'ono kuposa ma pores a diatomite. Pamene particles kugunda khoma la njira, n'zotheka kupatukana ndi madzi otaya, koma ngati angakhoze kukwaniritsa izi, Kutsimikiza ndi muyezo wa inertia mphamvu ndi kukana anavutika ndi particles, izi interception ndi kuwunika kanthu ndi ofanana mu chilengedwe ndi a mawotchi kanthu. Kutha kusefa tinthu tating'onoting'ono timagwirizana kwambiri ndi kukula kwake ndi mawonekedwe a tinthu tolimba ndi pores. [2]
Adsorption
Adsorption ndi yosiyana kwambiri ndi njira ziwiri zomwe zili pamwambazi. M'malo mwake, izi zitha kuonedwanso ngati kukopa kwa electrokinetic, zomwe zimatengera mawonekedwe amtundu wa tinthu tolimba ndi diatomite yokha. Pamene particles ndi pores ang'onoang'ono mu diatomite kugunda ndi mkati padziko porous diatomite, iwo amakopeka ndi milandu zosiyana, kapena particles kukopana wina ndi mzake kupanga unyolo ndi kutsatira diatomite, amene ali adsorption. [2] Adsorption ndizovuta kwambiri kuposa ziwiri zoyambirira. Amakhulupirira kuti tinthu tating'onoting'ono tomwe timakhala tinthu tating'onoting'ono kuposa pore diameter timatsekeredwa makamaka chifukwa:
(1) Mphamvu ya intermolecular (yomwe imatchedwanso kukopa kwa van der Waals) imaphatikizapo kuchitapo kanthu kosatha kwa dipole, kuchitapo kanthu kwa dipole ndi kuchitapo kanthu kwa dipole;
(2) Kukhalapo kwa Zeta kuthekera;
(3) Njira yosinthira ion.