"Alumina Kiimikada" waxaa loola jeedaa soo saarista aluminium ingot marka laga reebo alumina, aluminium oxide iyo aluminium hydroxide alaabada kala duwan ama alaabada la dheereeyey. Waxaa jira boqolaal nooc oo alumina kiimiko ah, waxayna leedahay codsiyo badan oo dhinacyo kala duwan ah. Maqaalkani wuxuu soo bandhigi doonaa codsiyada la xiriira ee aluminium hydroxide.
Aluminium hydroxide, oo sidoo kale loo yaqaan alumina hydrated, hydrous alumina, alumina hydrate, waa isku-darka amphoteric caadiga ah, oo ku milma asiidhyada iyo saldhigyada, aan ku milmin biyaha iyo khamriga. Qaacidada guud waa Al2O3 • H2O oo leh dhibic dhalaalaysa oo ah 300 (luminta biyaha). Sida ku cad biyaha, taxanaha aluminium hydroxide waxaa loo qaybin karaa: alumina trihydrate, alumina monohydrate, alumina crystallinity low iyo amorphous aluminum hydroxide. Laga soo saaray bauxite, waxaa sidoo kale laga samayn karaa milixda aluminium iyo sodium hydroxide oo leh biyo ammonia ah. Waxaa jira laba nooc oo crystalline ah iyo amorphous (jel).
1. Codsiga aluminium hydroxide
Hydroxide aluminium ah oo aan qaab lahayn waa alkali yar, bir yar, walxo khafiif ah, iyo caddaan sare. Qaabka adeeggu wuxuu leeyahay faa'iidooyinka adkaanta weyn, iska caabbinta kulaylka, iska caabbinta xirashada, xasilloonida kiimikada oo wanaagsan, aan sun ahayn, aan dhadhan lahayn, aan isbeddelin, fuuq-bax iyo nuugista kulaylka marka qaabka adeeggu uu ku kululaado in ka badan 250 DEG C, wuxuuna leeyahay baabi'in qiiqa oo wanaagsan iyo dib-u-dhac olol. Meelaha ugu muhiimsan ee loo adeegsado waa sida soo socota.
A waxaa loo isticmaalaa warshadaha walxaha balaastikada ah
Aluminium hydroxide waa nooc ka mid ah buuxinta aan dabiiciga ahayn ee la safeeyey, wasakhdiisuna waa yar tahay, taxanaha polymers-ka ee u isticmaala aluminium hydroxide sida wakiilka buuxinta waa polyurethane resin, epoxy resin, polyethylene, polypropylene, styrene butadiene rubber, iwm. Aluminium hydroxide oo ah wax ku ool ah oo ka hortagaya ololka iyo xakamaynta qiiqa ayaa loo isticmaalay resin aan dheregsanayn sannado badan.
Habka dab-damiska ee lagu daro ATH polymer-ka, isagoo yareynaya fiirsashada shidaalka; aluminium hydroxide wuxuu ka bilaabmay fuuq-baxa endothermic 250 DEG C, joojinta kororka heerkulka polymer-ka; kala-goynta uumiga biyaha ee ku milmidda fiirsashada oksijiinta, gubashada gaabiska ah; abuurista dusha sare ee guban karta ee alumina waxay ka hortagi kartaa in falcelinta gubashada ay sii socoto.
B aluminium hydroxide waxaa loo isticmaalaa warshadaha sameynta waraaqaha
Aluminium hydroxide waxaa inta badan loo isticmaalaa warshadaha dahaarka ee dahaarka dusha sare, buuxinta, iyo warqadda aan guban karin. Aluminium hydroxide wuxuu hagaajin karaa dhalaalka, milicsiga, iska caabbinta iftiinka, simanaanta iyo daabacaadda warqadda. Aluminium hydroxide waxaa sidoo kale loo isticmaali karaa sidii agabka ceeriin ee warqadda dahaarka leh, titania-na waxay beddeli doontaa dhoobada. Cabbirka walxaha aluminium hydroxide ee caadiga ah ee la isticmaalo waa 0.7-1.4 mu m.
Warqad dab-damis ah: dab-damis ah, kaarboonayn dabka, laakiin aan gubanayn. Waxaa laga sameeyay warqad asbestos ah, ama qalabka dab-damiska ah oo leh warqad ku habboon (sida aluminium hydroxide) iyo daaweyn.
C aluminium hydroxide waxaa loo isticmaalaa soo saarista daawada cadayga ee isku dhafka ah
Aluminium hydroxide waa mid aan sun ahayn oo aan dhadhan lahayn, aan ku milmin biyaha, waa nooc wanaagsan oo ah wakiilka isku dhaca dhexdhexaadka ah, wakiilka isku dhaca cadayga ee wax soo saarka warshadaha ee aluminium hydroxide Adkaysiga Mohs waa 2.5-3.5, daahirnimo ka badan 99%, qiimaha pH waa 8.0-9.5, qiimaha D50 waa 8-15 micron, qiimuhu waa dhexdhexaad, waa wakiil isku dhaca cadayga oo wanaagsan, fluoride iyo iswaafajin, waxqabad aad u fiican. Waa mid ka mid ah daawooyinka ugu fiican ee lagu xoqo cadayga.
D walxo cayriin ah oo isku dhafan
Mullite (ama mullite) waa taxane macdan ah oo ka kooban aluminosilicate. Mullite waa isku-darka laba curiye oo kaliya ee deggan nidaamka Al2O3 SiO2. Noocan macdanta ah waa mid aad u yar. Waa nooc ka mid ah kuwa aan tayo sare lahayn, mullite-na waxaa lagu samayn karaa iyadoo si macmal ah loo kululeeyo aluminium silicate. Mullite waxaa inta badan loo isticmaalaa kuwa aan dabiiciga ahayn, dhoobada, birta, shubka, elektaroonigga iyo warshadaha kale. Waxay leedahay astaamo u ah iska caabbinta heerkulka sare, xoog sare iyo hawo-qaadis kuleyl yar.
Intaa waxaa dheer, aluminium hydroxide waxaa loo isticmaali karaa sida marmar macmal ah, agate macmal ah, buuxin roogag; soo saarista aluminium sulfate, alum, alumina, alumina hydrated, walxaha kiimikada sodium aluminate alaabada caagga ah; wax ka qaboojiya ololka; loo isticmaalo buuxinta iyo kaabista dhejisyada iyo shaabadaha; shaandho molecular ah oo macmal ah; loogu talagalay gastricantiacids iwm.
2. Adeegsiga hydroxide aluminium aan qaab lahayn
Nooca jel-ka aluminium-ka ah waa Aluminium Hydroxide Jel, boehmite, amorphous alumina. Waxay leedahay dhejis wanaagsan, qaabayn, iska caabin heerkul sare, awood kulayl oo weyn, gudbin kuleyl oo hooseeya, iska caabin daxaleed oo wanaagsan iyo iska caabin oksaydh, xoog sare iyo dusha siman.
Aluminium hydroxide waa mid ka mid ah maaddooyinka ugu muhiimsan ee jelka aluminiumka caloosha waa daawaynta caloosha iyo aashitada caloosha, daawada dhaqameed, diyaarinta isku-dhafka ah sida fiitamiin U iyo kaabsulka aluminiumka, Kiniiniyada Aluminium Hydroxide iyo qaybaha kale ee muhiimka ah, sidoo kale waxaa loo isticmaali karaa agabka daawada. Habka aashitada lidka caloosha waa Al (OH)3+6HCl=2AlCl3+3H2O. Lix alumina biyo ah oo laga sameeyay aluminium hydroxide ayaa loo isticmaali karaa sidii wakiil jelling ah oo ku saabsan daawada iyo qurxinta.
Daawaynta dusha sare iyo dhejiska dhejiska Isticmaalka jelka Aluminium Hydroxide waxaa laga samayn karaa faybar aan dabiici ahayn ama mid dabiici ah, iyadoo la adeegsanayo iska caabinta heerkulka sare iyo dhammaystirka dusha sare, oo si weyn loogu isticmaalo soo saarista qalabka dhoobada heerka sare ah, oo sidoo kale loo isticmaalo soo saarista foornada korontada ku shaqaysa; isla markaana waa buuxinta aan dabiiciga ahayn.
Waqtiga boostada: Maarso-26-2020