Aluminium sulfate(inozivikanwawo sealum kana bauxite) inowanzoshandiswa semushonga wekuyera.Yayo huru yemakemikari inoumbwa nealuminium sulfate ine 14 ~ 18 crystal mvura, uye iyo Al2O3 yemukati ndeye 14 ~ 15%.Aluminium sulfate iri nyore kunyungudika, uye mhinduro yayo ine acidic uye inoparadza.Izvo zvisina kuchena zviri mubauxite hazvifaniri kunge zvakanyanyisa, kunyanya iron salt haifaniri kunge yakanyanyisa, kana zvisina kudaro ichaita kemikemikari nerosin gum uye dhayi, inokanganisa ruvara rwepepa.
Hunhu hwemhando ye saizi ye bauxite ndeiyi: zviri mukati mealuminium zvinopfuura 15.7%, zviri mukati me iron oxide iri pasi pe 0.7%, zviri mukati memvura isinganyunguriki zvinhu zvisingasviki 0.3%, uye haina yemahara sulfuric acid.
Bauxite inobata basa rakakura mukugadzira mapepa, chekutanga kudiwa kwekukura, uye inosanganawo nezvimwe zvinodiwa pakugadzira mapepa.Iyo bauxite mhinduro ine acidic, uye kuwedzera yakawanda kana kushoma bauxite kuchakanganisa zvakananga pH kukosha kwe slurry pamambure.Kunyangwe kugadzira mapepa kwave kuchinja kuita kwazvakarerekera kana alkaline, basa realuminium mukugadzira mapepa harigone kufuratirwa.
Zvidzidzo zvakaratidza kuti kudzoraδ zvinogona kuburikidza nekugadzirisa pH kukosha kwepaIndaneti inogona kunyatsogadzirisa kunyura uye kuchengetwa kwepamhepo slurry, uye inogona kunyatsoshandisa talcum powder kudzora zvipingamupinyi zve resin.Kuwedzera kwakakodzera kuwanda kwebauxite kuderedza pH kukosha kweslurry kunogonawo kuderedza zvinobudirira kusungirirwa kwepulp uye kuderedza kupera-kuputsika kunokonzerwa nebvudzi remapepa rinonamatira kune roller.Inowanzoratidza kuti kana paine yakawanda yemvere dzemapepa mukudhinda, huwandu hwealumina hunogona kuwedzerwa zvakakodzera.Zvisinei, huwandu hwebauxite hunofanira kudzorwa zvakanaka.Kana iyo yakawanda yakawandisa, haizongokonzeresa marara, asiwo inoita kuti bepa rive brittle.Uye inotungamira mukuora kwemapepa emuchina zvikamu uye kurasikirwa kwewaya uye kunzwa.Naizvozvo, huwandu hwealumina hunowanzodzorwa nekudzora pH kukosha pakati pe4.7 ne5.5.
Iyo alumina dissolution nzira dzinosanganisira kupisa kunyungudika nzira uye kutonhora kupera nzira.Iyo yekutanga ndeye kukurumidza kupera kwealuminium nekupisa;iyo yekupedzisira ndeye kukurumidza kupararira uye kuparara kwealumina mune aqueous mhinduro kuburikidza nekutenderera.Kuenzaniswa neinopisa yekunyunguduka nzira, iyo nzira yekunyungudutsa ine zvakanakira kuchengetedza utsi nekuvandudza nharaunda yemuviri, uye iri nani nzira yekunyungudutsa.
Nguva yekutumira: Jun-26-2023