I-aluminium hydroxideinobumhlophe obuhle, inkomba yokukhanya okuphakathi nendawo, kulula ukuyicubungula, ine-langabi elivimbelayo elihle, ukucindezela intuthu nezinye izici, ngakho-ke i-aluminium hydroxide njengetshe lokwenziwa iyisigcwalisi esihle kakhulu.
Imikhiqizo yamatshe yokwenziwa eyenziwe ngezinto zokusetshenziswa ze-aluminium hydroxide inezici ezilandelayo:
Isisindo esilula, izindleko eziphansi, ukucutshungulwa okulula, umbala omuhle, ukuqina okuhle, kungafeza ukuthunga okungenamthungo, futhi indlela yokukhiqiza ilula, umjikelezo wokukhiqiza omfushane. Ngakho-ke, isakazeka ngokushesha kuzo zonke izingxenye zomhlaba futhi ibizwa ngokuthi izinto zokwakha ezisetshenziswa kabanzi.
Njengamanje, isidingo sonyaka samatshe okwenziwa emhlabeni wonke nge-aluminium hydroxide singamathani angaba ngu-700,000, futhi njalo ngonyaka cishe ngamaphesenti ayi-10 esilinganiso sokukhula. Izibalo ezingaphelele, isidingo sonyaka samatshe okwenziwa eShayina singamamitha-skwele angu-1100 ngaphezulu, kanti umthamo wokukhiqiza wamanje wabakhiqizi bamatshe okwenziwa basekhaya ungamamitha-skwele ayizigidi ezingu-7 kuphela, okuwumthamo omkhulu wemakethe.
Ngenxa yenqubo ekhethekile yokusila kanye nenqubo yokuhlanzwa okujulile kwesisombululo se-sodium chlorate, imikhiqizo ye-alumina ekhiqizwa yinqubo yokusila i-alkali lime inezici zobumhlophe obuphezulu kanye nokuqukethwe okuphansi kwensimbi. Ngokusekelwe ekuthuthukisweni okusheshayo kwemboni yamatshe okwenziwa, umugqa wokukhiqizwa kwe-filler aluminium hydroxide unwetshwa ngokushesha ube yingxenye yemakethe ekhaya nakwamanye amazwe.
Okulandelayo abakhiqizi be-aluminium hydroxide etsheni lokwenziwa nge-aluminium hydroxide izindlela ezintathu zokukhiqiza inqubo kanje:
(1) imikhiqizo ekhiqizwa ngendlela yokuhlukanisa ikhabhoni inobumhlophe obuphezulu kancane, inani le-pH eliphakeme kanye ne-SiO2% yemikhiqizo, kanye nobumsulwa obuphansi. Ukukhiqizwa kwemikhiqizo yokuhlukanisa ikhabhoni, usayizi wokuqala wokusanhlamvu womkhiqizo mncane, ubuso bokusanhlamvu buqinile kakhulu, ikristalu yekristalu ikhululekile, izinga lokwakheka kwekristalu liphansi, ama-pores makhulu, yilesi sizathu sezinga eliphezulu lokumuncwa kwamafutha lomkhiqizo, ngokukhiqizwa kwawo kwepuleti lamatshe elenziwe ngokwenziwa elimhlophe.
(2) ubumhlophe bemikhiqizo ekhiqizwa ngendlela yokuhlukaniswa kwezinhlobo buphansi kancane, izinga lokumuncwa kwamafutha liphansi, inani le-pH kanye ne-SiO2% yemikhiqizo liphansi kakhulu, kanti ubumsulwa bemikhiqizo buphakeme kakhulu. Ukukhiqizwa kwemikhiqizo, ukukhula kwekristalu kuphelele kakhulu, ubuso bezinhlamvu zekristalu buhlanzekile kakhulu, amakristalu ekristalu aminyene kakhulu, izinga lokukristalu lihle kakhulu, igebe phakathi kwezinhlayiya lincane, lokhu izinga lokumuncwa kwamafutha omkhiqizo liphansi uma uzimisele, ngokukhiqizwa kwawo kwepuleti lamatshe okwenziwa amandla aphezulu.
(3) imikhiqizo ekhiqizwa ngendlela yokuxuba inezinga eliphansi kakhulu lokumuncwa kwamafutha kanye nephansi elimhlophe. Indlela yokuxuba imikhiqizo, kokubili izinhlayiya ezinkulu zezinto zokusetshenziswa, kanye nezinhlayiya ezincane ze-carbon filler, ukuhlukanisa, ukugcwalisa ngokugcwele, kwenza umkhiqizo we-aluminium hydroxide wezinga lokumuncwa kwamafutha uncishiswe kakhulu, ngesikhathi esifanayo, i-viscosity yomkhiqizo iphansi, ingaphansi kwama-eps angu-20000, ngezindleko zayo eziphansi, ukukhiqizwa kwepuleti lamatshe okwenziwa kanye namakhasimende awadingi ukwaba i-aluminium hydroxide filler, ngaphandle kwe-Labour.
Isikhathi sokuthunyelwe: Agasti-12-2019