Mashandisirwo: mukugadzira aruminiyamu hydroxide. Essence: mbeu yearuminiyamu hydroxide inopwanywa, isanganise nealuminate solution. Musanganiswa unobuda unoiswa muchubhu nekukurunga uye unorapwa necarbon dioxide. Kuparadzanisa aruminiyamu hydroxide kubva kune doro remudumbu. Aruminiyamu hydroxide inogezwa.
Kugadzirwa uku kune chekuita nekugadzirwa kwealuminium hydroxide.
Nzira yekuwana aluminium hydroxide yakanaka [1] umo maitiro acho anoitwa muzvikamu zviviri. Muchikamu chekutanga, aluminate solution inobviswa nehydrochloric acid, uye aluminium hydroxide inobuda zvakanaka inoshandiswa sekuora kwembeu ye supersaturated aluminate solution muchikamu chechipiri.
Dambudziko renzira iyi nderekuti mari yakawanda inokonzerwa nekusagadzikana kweasidhi mu caustic alkali, kuunganidzwa kwetsvina mumhinduro, nezvimwewo.
Imwe nzira iri pedyo neyakagadzirwa pari zvino [2] ndeyekuti pakugadzira aruminiyamu hydroxide yakanaka sembeu panoshandiswa upfu hwearuminiyamu hydroxide.
Dambudziko renzira iyi nderekuti mhinduro ye wintopo ine simba rakawanda.
Chinangwa chekugadzirwa uku ndechekuderedza mutengo wesimba remagetsi nekuwedzera huwandu hwearuminiyamu hydroxide yakanaka.
Kugadzira mhinduro dzealuminate necarbon dioxide, maitiro ekugadzira kabhoni anoshandiswa zvakanyanya muzvirimwa zvealumina zvinoshanda nenzira yekupisa. Kushandisa kabhoni kunogona kupa hydroxide yakawanda.
Saizi yealuminium hydroxide inowanikwa mukugadzirwa kwecarbonization inoenderana zvakanyanya nekupisa kwecarbonization uye kuumbwa kwemhinduro dzealuminate (kuwanda kwealkali nealumina).
Nzira inozivikanwa (simbi dzakareruka. 1937, Nhamba 10, S. 8-15) kugadzirwa kwealuminium hydroxide yakanaka nenzira yecarbonization, kusanganisira kugadziriswa kwecarbon dioxide ultracracker aluminate solutions (concentration 200 g/l) patembiricha yakaderera (30nezveC).
Kunyange zvazvo nzira iyi ichipa simba rakawanda realuminium hydroxide, kushandiswa kwayo hakugoneki nekuda kwematambudziko ehunyanzvi anoitika mumatanho ekupedzisira ekuita: Dhipatimendi remvura nekugeza.
Zvisinei, kana uchishandisa nzira ye nizkokontsentrirovannye ye carbonization inokundikana.
Saizi yegorosi yealuminium hydroxide inowanikwa pasi pemamiriro ezvinhu aya, inoratidzwa nekuumbwa kusina kufanana uye huwandu hwakawanda hwezvimedu zvakaoma.
Kugadzira uku kunosanganisira kugadzira aluminium hydroxide yakanaka, inosanganisira kukuya mbeu yealuminium hydroxide, kuisanganisa nealuminate solution, kucheneswa kwesimbi inobuda nekukurunga, kuparadzanisa aluminium hydroxide kubva kune doro remamai nekuisuka, aluminium hydroxide isati yaparadzaniswa kubva kune doro remamai, slurry inorapwa necarbon dioxide.
Zvidzidzo zvakaratidza kuti pakugadzirisa mhinduro dzecarbon dioxide aluminate dzine huwandu hwakawanda hwezvinhu zvakasimba, saizi yezvikamu inenge yakafanana.
Pakugadzira mbeu yakapwanywa mu supersaturated aluminate solution, uye kukwegura kwe suspension inobuda nekukurunga, kubudisa huwandu hwakawanda hwe aluminium hydroxide yakapararira zvakanyanya. Zvisinei, goho re aluminium hydroxide yakanaka isina kugadziriswa kwe suspension yakaderera uye zvinoenderana nehuwandu hwe caustic alkali mumushonga: huwandu hwe alkali hwakakwira, ndiko kudzikira kwegoho.
Pakugadzirisa kabhoni dhayokisaidhi, kumisa kwekutanga kunopiwa nearuminiyamu hydroxide kwakafanana nekugadzirwa kwekumiswa mushure mekuratidzwa kwekutanga, zvisinei, kunowedzera hukuru hwe particles dzearuminiyamu hydroxide zvakanyanya.
Nzira iyi inogona kushandiswa uchishandisa hardware iripo.
Nzira yacho inonyanya kushandiswa kugadzira zvirimwa zvealumina zvichibva pahunyanzvi hwe spechitelnoj.
Kuenzanisa data kubva mukuongororwa kwakawanda kunoratidza kuti kugadziriswa kwe hydrate slurry yakawanikwa mushure mekuiswa musanganiswa we aluminate solution nembeu dzakachekwa, carbon dioxide inobvumira kuwana fine aluminum hydroxide uye kuve nechokwadi chekuti chigadzirwa chinobuda zvakanaka.
PRI me R 1. 0.02 kg yearuminiyamu hydroxide ine saizi yepakati ye2.8 μm yakasanganiswa ne1 litre yealuminiyamu solution ine, g/l: Na2CMOS 100,8; Al2O3107,4.
Kumiswa kwacho kwakaitwa pa60nezveNeanopfuura maawa gumi, aruminiyamu hydroxide yakanaka yaive 40,4, saizi yepakati pechinhu musediment ye3.6 μm. Musanganiswa wemvura weNoi, une angangoita 12. CO2.2Nguva yekugadzirisa ndeyemaawa matanhatu kusvika pahuwandu hwasara hwesodium oxide mumushonga mushure mekurapa hwe5.6 g/L.
Avhareji yehukuru hwezvimedu zviri mumatope mushure mekugadzirisa ndeye 4.8 μm. Kubuda kwealuminium hydroxide 102,5.
PRI mme R 2. 0.02 kg yearuminiyamu hydroxide ine saizi yepakati ye2.8 μm yakasanganiswa ne1 litre yealuminate solution uye pakarepo (pasina kusvibiswa) yakarapwa necarbon dioxide. Nguva yekurapwa uye kuwanda kweCO22mumusanganiswa wegesi wakafanana nemuenzaniso 1.
Kubuda kwearuminiyamu hydroxide kwaive 103,1, saizi yepakati pechinhu chiri mumatope e30.4 μm.
Saka, kushandiswa kwemaitiro ari pamusoro apa: musanganiswa wealuminate solution netsvina yakapwanywa, kumiswa kunobuda, carbonation slurry isati yaparadzaniswa yealuminum hydroxide kunogona kupa aluminium hydroxide yakanaka kwazvo.
Nzira yekugadzira FINE ALUMINUM HYDROXIDE, inosanganisira kukuya mbeu yealuminium hydroxide, kuisanganisa nealuminate solution, kuchenesesa suspension inobuda nekukurunga, kuparadzanisa aluminum hydroxide kubva kune doro remushonga nekusuka,
Nguva yekutumira: Chikunguru-09-2020