"Chemical alumina" zvinoreva kugadzirwa kwealuminium ingot kunze kwealumina, aluminum oxide uye aluminum hydroxide differentiated products kana extended products. Kune mazana emhando dzechemical alumina, uye ine mashandisirwo akasiyana-siyana muminda yakasiyana-siyana. Chinyorwa chino chichatsanangura mashandisirwo anoenderana nealuminium hydroxide.
Aluminium hydroxide, inozivikanwawo se hydrated alumina, hydrous alumina, alumina hydrate, chinhu chinowanzo shandiswa mu amphoteric compound, inonyungudika muma acids nema bases, isinganyungudike mumvura ne alcohol. Fomura yakajairika ndeye Al2O3 • H2O ine poindi yekunyungudika ye300 (kurasikirwa nemvura). Zvichienderana nehuwandu hwemvura, aluminium hydroxide series inogona kukamurwa kuita: alumina trihydrate, alumina monohydrate, low crystallinity alumina uye amorphous aluminum hydroxide. Yakatorwa kubva ku bauxite, inogonawo kugadzirwa kubva kualuminium munyu uye sodium hydroxide nemvura yeammonia. Kune marudzi maviri ecrystalline neamorphous (gel).
1. Kushandiswa kwe crystalline aruminiyamu hydroxide
Amorphous aruminiyamu hydroxide ine alkali shoma, iron shoma, zvidimbu zvitete, uye chena yakawanda. Modhi yekushandisa ine zvakanakira zvekuomarara kukuru, kuramba kupisa, kuramba kupfeka, kugara zvakanaka kwemakemikari, kusakuvadza, kuravira, kusachinja-chinja, kupera mvura mumuviri uye kunyudza kupisa kana modhi yekushandisa ikapiswa kusvika ku250 DEG C, uye ine hutsi hwakanaka uye inodzivirira moto. Nzvimbo huru dzekushandisa ndeidzi dzinotevera.
A inoshandiswa muindasitiri yezvinhu zvepurasitiki
Aluminium hydroxide rudzi rwechinozadza chisina kuchena, kusvibiswa kwacho kwakaderera, uye mapolymer anoshandisa aluminium hydroxide sechinozadza ndiwo polyurethane resin, epoxy resin, polyethylene, polypropylene, styrene butadiene rabha, nezvimwewo. Aluminium hydroxide semushonga unodzivirira moto unoshanda uye mutsivi weutsi yave ichishandiswa mu unsaturated resin kwemakore mazhinji.
Nzira inodzivisa moto yekuwedzera ATH kupolymer, ichideredza huwandu hwemafuta; aluminium hydroxide yakatanga pa250 DEG C endothermic dehydration, kudzivirira kukwira kwekupisa kwepolymer; kuora kwehuwandu hweokisijeni mumhepo, kunonoka kwekupisa; mukugadzira pamusoro pealumina panogona kudzivirira kuitika kwekupisa kuti kurambe kuripo.
B aruminiyamu hydroxide inoshandiswa muindasitiri yekugadzira mapepa
Aluminium hydroxide inonyanya kushandiswa muindasitiri yekuputira machira epamusoro, mafiller, uye mapepa asingatsvi. Aluminium hydroxide inogona kuvandudza kupenya, kupenya, kuramba chiedza, kutsvedzerera uye kudhindwa kwepepa. Aluminium hydroxide inogonawo kushandiswa sechinhu chisina kugadzirwa chepepa rakaputirwa, uye titania inotsiva ivhu. Saizi yezvidimbu zvealuminium hydroxide inowanzoshandiswa i0.7-1.4 mu m.
Bepa rinodzima moto: rinodzima moto, rinoisa carbonization mumoto, asi haritsvi. Rakagadzirwa nebepa reasbestos, kana rinodzima moto rine bepa rakakodzera (rakaita sealuminium hydroxide) uye rinogadziriswa.
C aruminiyamu hydroxide inoshandiswa kugadzira mushonga wekukwesha mazino
Aluminum hydroxide haina chepfu uye haina kunaka, hainyungudike mumvura, imhando yakanaka yekukweshana isina kupindirana, aluminium hydroxide ine simba reMohs. Kuomarara kwayo kuri 2.5-3.5, kuchena kwayo kunopfuura 99%, pH kukosha 8.0-9.5, D50 kukosha 8-15 micron, mutengo wayo uri pakati nepakati, inyanzvi yekukweshana kwemazino, fluoride uye inoenderana, inoshanda zvakanaka. Imwe yemishonga yakanaka yekubvisa mazino.
D synthetic mullite mbishi zvinhu
Mullite (kana mullite) imhando yezvicherwa zvakatevedzana zvine aluminosilicate. Mullite ndiyo yega compound ine zvinhu zviviri zvakagadzikana muAl2O3 SiO2 system. Rudzi urwu rwezvicherwa haruna kukwana. Imhando yemhando yepamusoro yekuramba, uye mullite inogona kugadzirwa nekupisa aluminium silicate yakagadzirwa. Mullite inonyanya kushandiswa mu refractories, ceramics, metallurgy, casting, electronics nedzimwe nzvimbo. Ine hunhu hwekudzivirira kupisa kwakanyanya, simba rakawanda uye thermal conductivity diki.
Pamusoro pezvo, aruminiyamu hydroxide inogona kushandiswa semarble yekugadzira, agate yekugadzira, carpet filler; kugadzirwa kwealuminium sulfate, alum, alumina, hydrated alumina, sodium aluminate chemical materials raber products; flame retardant; inoshandiswa sefiller uye supplements yeglues uye sealants; synthetic molecular sieve; ye antiacids yemudumbu nezvimwewo.
2. Mashandisirwo e amorphous aruminiyamu hydroxide
Gel ine aruminiyamu hydroxide inonzi Aluminium Hydroxide Gel, boehmite, amorphous alumina. Ine namatidziro yakanaka, kuumba, inodzivirira kupisa zvakanyanya, ine simba guru rekupisa, ine simba shoma rekudzivirira kupisa, ine simba guru uye ine nzvimbo yakatsetseka.
Aluminum hydroxide chimwe chezvinhu zvikuru zvinoshandiswa mudumbu. Aluminum gel inorapa dumbu neacid yemudumbu, mishonga yechivanhu, mishonga yakaita sevhitamini U nemacapsule ealuminium, Mapiritsi eAluminum Hydroxide nezvimwe zvinhu zvikuru, zvinogona kushandiswawo semishonga. Maitiro ekudzivirira gastric acid ndeyeAl (OH)3+6HCl=2AlCl3+3H2O. Alumina yemvura nhanhatu yakagadzirwa kubva kualuminium hydroxide inogona kushandiswa semushonga wegelling mumunda wemishonga necosmetics.
Kugadzirisa pamusoro uye kunamira kunamira kwayo Aluminium Hydroxide Gel inogona kugadzirwa nefiber isina organic kana organic, ichishandisa simba rayo rekudzivirira kupisa kwakanyanya uye kupedzisa kwayo pamusoro, inoshandiswa zvakanyanya mukugadzira midziyo yeceramic yepamusoro, inoshandiswawo pakugadzira porcelain yemagetsi; panguva imwe chete ndiyo zvakare inorganic filler.
Nguva yekutumira: Kurume-26-2020