Yavaibvisa metasilicate pentahydrate Kugadzira maitiro
Iyo nzira dzekubatanidza sodium metasilicate dzinosanganisira kupfapfaidza kuomesa nzira, kunyungudutsa solidification crystallization nzira, imwe-nguva granulation nzira uye mhinduro crystallization nzira.
Iyo crystallization process ine hunhu hwekushandisa kushoma kwemidziyo, mutengo wakaderera wekugadzira uye yakagadzikana mhando. Kuyerera kwemaitiro kunoratidzwa sezvinotevera
2.1 Mhedzisiro yekristaro concentration
Sodium metasilicate pentahydrate inogadzirwa nemhinduro crystallization process. Zvinoenderana neiyo chikamu dhizaini [3], kusungirirwa kweiyo crystallization solution (Na2O + SiO2) inofanira kudzorwa chero
Sodium metasilicate pentahydrate inogona kugadzirwa muhuwandu hwe25% ~ 28% (chikamu chezhinji). Nekudaro, pane yakakwana N a2O uye SiO 2 mumhinduro
Nhamba yacho inokanganiswa. Chikamu chikuru che8i02 chakakwirira, nguva yecrystallization yakareba, uye cheni yen (Na2O) / n (SiO2) inoshandiswa zvakananga ndeye 1,
Mushonga une 58% misa chidimbu inopenya, uye mhodzi yekristaro inowedzerwa. The crystallization cycle inotora 72 ~ 120h; Yakakwira zvemukati zveNa2O
Iyo inomhanya inokurumidza, asi iyo inokurumidza crystallization kumhanya iri nyore kukonzeresa yakanaka crystal particles, yakawanda Na2O yakadzidziswa nekristaro kukura, uye chigadzirwa modulus inonetsa kusvika.
Kuti uwane zvinodiwa, ona Tafura 1.
2.2 Mhedzisiro yembeu
Mune crystallization process ye sodium metasilicate, kuitira kudzora mhando yekristaro uye kuwana zvigadzirwa zvine yunifomu particle size.
Wedzera mhodzi dzekristaro dzine saizi yakafanira uye uwandu, uye zvinyoro simbisa maitiro ese kuita kuti mhodzi dzekristaro dzinyanye kuturika mumushonga wese.
Deredza huwandu hwechipiri nucleation, kuitira kuti iyo crystallized zvinhu zvinokura chete pamusoro pemhodzi yekristaro.
Huwandu hwekristaro yembeu inowedzerwa zvinoenderana nemhando, siyana uye chidimbu saizi yechigadzirwa chinogona kukwenenzverwa panguva yese yekristaro maitiro uye chigadzirwa chaunoda.
The granularity of. Tichifunga kuti hapana mhodzi yekutanga nucleating inogadzirwa mukuita, nhamba yezvidimbu muzvigadzirwa zvakapedzwa zvakaenzana nenhamba yezvimedu zvembeu ichangobva kuwedzerwa.
Mp/KvpLp3=Ms/KvLs3P, tevere M s=Mp (Ls/Lp) 3
Ikoko: M s, M p —— kunaka kwembeu yekristaro uye chigadzirwa chakapedzwa; Ls, Lp -- avhareji saizi yembeu yekristaro uye chigadzirwa chakapedzwa; K v, P metasilicic acid
Muviri pfuma inogara iri sodium.
Kune iyo crystallization process ye sodium metasilicate aqueous solution, zvinoenderana nekuongororwa kwekristaro chikamu chekuchinja, nekuda kwehupamhi hwakatetepa hwenzvimbo yayo inogoneka, zviri nyore kupinda.
Munzvimbo isina kugadzikana, mhodzi dzine saizi ye 0.1-0.2mm dzinowanzowedzerwa. Kana avhareji saizi yechigadzirwa chakapedzwa inodiwa kuve 1mm Kufunga zvisingadzivisike
Iyo nucleation huwandu hwemhinduro yemahara pachayo i40% ~ 60% yechikamu chehukuru apo 0.1 m mhodzi dzekristaro dzinowedzerwa.
2.3 Kurudziro yekudzora tembiricha
Iyo crystallization process ye sodium metasilicate pentahydrate inonzwa tembiricha, uye kukura kwayo kwekristaro kunoda kuenda kuburikidza nekuita induction process, iyo inogamuchirwa pakati pe50-60 ℃.
Huwandu hwekristaro nuclei hunodzorwa nekuwedzera mhodzi dzekristaro kune mhinduro, uye ipapo kristaro inokura pamwero wakafanana pasi pekupisa kusingachinji uye supersaturation. Muchikamu chekupedzisira chekristaro, tonhorera pasi pamwero we1 ℃ paminiti kuita kuti kristaro ikure nekukurumidza, uye iparadzanise zvinhu kana yasvika 38-48 ℃.
2.4 Mhedzisiro yezvimwe zvinowedzera
Kuti zvigadzirise kuparadzaniswa kwemvura yakasununguka uye kristaro panguva yekushanda kwekuparadzanisa, chiyero che 0.005% ~ 0.015% yehuwandu huchatorwa 0.5h isati yapera kutonhora.
Iko kusawirirana kwepamusoro pakati pekristaro nemvura kunogona kuderedzwa nekuwedzera dodecyl sulfonic acid surfactant kamwe chete, iyo inogona kusunungura yakanyorova sampuli.
Mvura inodonha pasi pe4% yekuomesa nekuchengetedza
Nguva yekutumira: Oct-13-2022