Ukusetyenziswa: ekuveliseni i-aluminium hydroxide. I-Essence: imbewu ye-aluminium hydroxide iyacolwa, yixube nesisombululo se-aluminate. Ukumiswa okuphumayo kufakwe kwi-incubator ngokuxuba kwaye kuphathwe nge-carbon dioxide. Ukwahlula i-aluminium hydroxide kwi-mother liquor. I-aluminium hydroxide iyahlanjwa.
Le ngcinga inxulumene nokuveliswa kwe-aluminium hydroxide.
Indlela yokufumana i-aluminium hydroxide entle [1] apho inkqubo iqhutywa ngamanqanaba amabini. Kwinqanaba lokuqala isisombululo se-aluminate siyasuswa nge-hydrochloric acid, kwaye i-aluminium hydroxide ephumayo esasazeke kakuhle isetyenziswa njengokubola kwembewu yesisombululo se-aluminate esingaphezulu kwesaturated kwinqanaba lesibini.
Ingxaki yale ndlela ziindleko eziphezulu ezibangelwa kukungaqini kwe-asidi ye-caustic alkali, ukuqokelelwa kokungcola kwizisombululo, njl.
Eyona ndlela ikufutshane nale mveliso ikhoyo ngoku yindlela [2] apho kusetyenziswa i-aluminium hydroxide ecolekileyo njengembewu ukuze kuveliswe i-aluminium hydroxide ecoliweyo.
Ingxaki yale ndlela yisisombululo se-wintopo esiphezulu.
Injongo yale mveliso kukunciphisa iindleko zamandla ngokunyusa imveliso ye-aluminium hydroxide entle.
Ukucubungula izisombululo ze-aluminate nge-carbon dioxide, inkqubo yokwenza i-carbonization isetyenziswa kakhulu kwizityalo ze-alumina ezisebenza ngendlela yokusila. Ukusetyenziswa kwe-carbonization kunokubonelela nge-hydroxide ephezulu.
Ubungakanani bengqolowa ye-aluminium hydroxide efunyenwe kwinkqubo ye-carbonization buxhomekeke kakhulu kubushushu be-carbonization kunye nokwakheka kwezisombululo ze-aluminate (uxinzelelo lwe-alkali kunye ne-alumina).
Indlela eyaziwayo (iintsimbi ezikhanyayo. 1937, No. 10, S. 8-15) ukuveliswa kwe-aluminium hydroxide entle ngendlela ye-carbonization, kubandakanya ukucutshungulwa kwezisombululo ze-carbon dioxide ultracracker aluminate (uxinzelelo lwe-200 g/l) kumaqondo obushushu aphantsi (30malungaC).
Nangona le ndlela inika imveliso ephezulu ye-aluminium hydroxide entle, ukusetyenziswa kwayo akunakwenzeka ngenxa yobunzima bobuchwephesha obuvela kwizigaba zokugqibela zenkqubo: iSebe lemvula kunye nokuhlamba.
Nangona kunjalo, xa kusetyenziswa indlela ye-nizkokontsentrirovannye yokwenza i-carbonization ayiphumeleli.
Ubungakanani bengqolowa ye-aluminium hydroxide efunyenwe phantsi kwezi meko, bubonakala ngokubunjwa okungafaniyo kunye nomxholo ophezulu wamasuntswana arhabaxa.
Le nguqulelo ibandakanya ukuba kwindlela yokuvelisa i-aluminium hydroxide entle, equka ukugaywa kwembewu ye-aluminium hydroxide, ukuyixuba nesisombululo se-aluminate, ukuguga kokumiswa okubangelwayo ngokuxuba, ukwahlula i-aluminium hydroxide kutywala obungumama kunye nokuhlamba, ngaphambi kokuba yahlukanise i-aluminium hydroxide kutywala obungumama, i-slurry iphathwe nge-carbon dioxide.
Izifundo zibonise ukuba xa kusetyenzwa izisombululo ze-carbon dioxide aluminate eziqulethe izixa ezikhulu zezinto eziqinileyo, ubukhulu bezinto ezisetyenziswayo buphantse bufane.
Xa kusenziwa imbewu etyumkileyo kwisisombululo se-aluminate esixatyisiweyo, kwaye kuguga i-suspension ephumayo ngokuxuba ivelisa inani elikhulu le-aluminium hydroxide esasazekileyo kakhulu. Nangona kunjalo, isivuno se-aluminium hydroxide encinci ngaphandle kokucutshungulwa okongezelelweyo kwe-suspension siphantsi kwaye sixhomekeke kuxinzelelo lwe-caustic alkali kwisisombululo: okukhona uxinzelelo lwe-alkali luphezulu, kokukhona isiphumo siphantsi.
Xa kucutshungulwa ikharbon diokside, ukumiswa kokuqala kunikezelwa yimveliso ye-aluminium hydroxide kuyafana naxa kucutshungulwa ukumiswa emva kokuvezwa kwangaphambili, nangona kunjalo, kwandisa kakhulu ubungakanani be-particle ye-aluminium hydroxide.
Le ndlela ingasetyenziswa kusetyenziswa izixhobo ezikhoyo.
Le ndlela ikhethwayo izityalo ze-alumina ezisekelwe kwiteknoloji ye-spechitelnoj.
Ukuthelekisa idatha evela kwiimvavanyo ezininzi kubonisa ukuba ukucutshungulwa kwe-hydrate slurry efunyenwe emva kokuvezwa komxube wesisombululo se-aluminate kunye nembewu eqoshiweyo, i-carbon dioxide ivumela ukufumana i-aluminium hydroxide entle kwaye iqinisekise isivuno esiphezulu semveliso.
I-PRI me R 1. I-0.02 kg ye-aluminium hydroxide enobukhulu obuphakathi be-2.8 μm ixutywe nelitha e-1 yesisombululo se-aluminate equlethe, g/l: Na2I-CMOS 100,8; Al2O3107,4.
Ukumiswa okubangelwe koku kwamkelwe kwi-60malungaNgaphezulu kweeyure ezili-10 i-Out fine aluminum hydroxide yayiyi-40,4, ubungakanani obuqhelekileyo be-particle kwi-sediment yi-3.6 μm. Ulwakhiwo lwesigaba solwelo sokumiswa, umxube we-Noi, oqulethe malunga ne-12. CO2Ixesha lokucubungula liziiyure ezi-6 ukuya kumxholo oseleyo we-sodium oxide kwisisombululo emva konyango lwe-5.6 g/L.
Ubungakanani obuqhelekileyo besuntswana kwi-sediment emva konyango yi-4.8 μm. Imveliso ye-aluminium hydroxide yi-102,5.
I-PRI mme R 2. I-0.02 kg ye-aluminium hydroxide enobukhulu obuphakathi be-2.8 μm ixutywe nelitha e-1 yesisombululo se-aluminate kwaye ngoko nangoko (ngaphandle kokuvezwa) yanyangwa nge-carbon dioxide. Ubude bonyango kunye noxinzelelo lwe-CO22kumxube wegesi ofana nomzekelo 1.
Imveliso ye-aluminium hydroxide yayiyi-103,1, ubungakanani obuqhelekileyo be-particle kwi-sediment yi-30.4 μm.
Ngoko ke, ukuphunyezwa kolu landelelwano lungentla lwemisebenzi: umxube wesisombululo se-aluminate kunye ne-extract yembewu etyumkileyo, ukumiswa okubangelwayo, i-carbonation slurry ngaphambi kokwahlulwa kwe-aluminium hydroxide kunokubonelela nge-aluminium hydroxide entle ephumayo ephezulu.
INDLELA yokuvelisa i-FINE ALUMINUM HYDROXIDE, equka ukugawula imbewu ye-aluminium hydroxide, ukuyixuba nesisombululo se-aluminate, ukuguga kwe-suspension ephumayo ngokuxubha, ukwahlula i-aluminium hydroxide kwi-liquor yomama kunye nokuhlamba,
Ixesha lokuthumela: Julayi-09-2020