Kugwiritsa Ntchito Aluminiyamu Hydroxide

"Chemical alumina" ikutanthauza kupanga aluminiyamu ingot kupatula alumina, aluminiyamu oxide ndi aluminiyamu hydroxide zinthu zosiyanasiyana kapena zinthu zina zowonjezera. Pali mitundu yambiri ya alumina ya mankhwala, ndipo imagwiritsidwa ntchito m'magawo osiyanasiyana. Nkhaniyi ifotokoza za momwe aluminiyamu hydroxide imagwiritsidwira ntchito.

Aluminium hydroxide, yomwe imadziwikanso kuti hydrated alumina, hydrous alumina, alumina hydrate, ndi mankhwala wamba amphoteric, osungunuka mu acid ndi maziko, osasungunuka m'madzi ndi mowa. Fomula yonseyi ndi Al2O3 • H2O yokhala ndi malo osungunuka a 300 (kutaya madzi). Malinga ndi kuchuluka kwa madzi ake, mndandanda wa aluminiyamu hydroxide ukhoza kugawidwa m'magulu awa: alumina trihydrate, alumina monohydrate, alumina yotsika crystallinity ndi amorphous aluminiyamu hydroxide. Yotengedwa kuchokera ku bauxite, imathanso kupangidwa kuchokera ku mchere wa aluminiyamu ndi sodium hydroxide ndi madzi a ammonia. Pali mitundu iwiri ya crystalline ndi amorphous (gel).

Amorphous aluminiyamu hydroxide ndi yotsika kwambiri ya alkali, chitsulo chochepa, tinthu tating'onoting'ono, ndi yoyera kwambiri. Chitsanzo chothandizira chili ndi ubwino wa kuuma kwakukulu, kukana kutentha, kukana kutopa, kukhazikika bwino kwa mankhwala, kusakhala ndi poizoni, kusakoma, kusasinthasintha, kutaya madzi m'thupi komanso kuyamwa kutentha pamene chitsanzo chothandizira chitenthedwa kufika pa 250 DEG C, ndipo chimakhala ndi utsi wabwino komanso kuletsa moto. Malo ofunikira kwambiri ndi awa.

Aluminium hydroxide ndi mtundu wa zinthu zosapangidwa mwachilengedwe zoyeretsedwa, kuchuluka kwake kodetsedwa n'kochepa, ndipo ma polima ambiri omwe amagwiritsa ntchito aluminiyamu hydroxide ngati chodzazira ndi polyurethane resin, epoxy resin, polyethylene, polypropylene, styrene butadiene rabara, ndi zina zotero. Aluminium hydroxide ngati choletsa moto komanso choletsa utsi chakhala chikugwiritsidwa ntchito mu utomoni wosakhuta kwa zaka zambiri.

Njira yochepetsera moto yowonjezerera ATH ku polima, kuchepetsa kuchuluka kwa mafuta; aluminiyamu hydroxide inayamba pa 250 DEG C madzi m'thupi, kuletsa kukwera kwa kutentha kwa polima; kuwonongeka kwa nthunzi ya madzi kumachepetsa kuchuluka kwa okosijeni, kuyaka pang'onopang'ono; popanga pamwamba pa alumina yomwe imayaka moto, zimatha kuletsa kuyaka kuti kupitirire.

Aluminium hydroxide imagwiritsidwa ntchito kwambiri mumakampani opanga zokutira pamwamba, zodzaza, ndi mapepala osayaka. Aluminium hydroxide imatha kukonza kunyezimira, kuwunikira, kukana kuwala, kusalala komanso kusindikizidwa kwa pepala. Aluminium hydroxide ingagwiritsidwenso ntchito ngati zopangira mapepala okutidwa, ndipo titania idzalowa m'malo mwa dongo. Kukula kwa tinthu ta aluminium hydroxide komwe kumagwiritsidwa ntchito kwambiri ndi 0.7-1.4 mu m.

Pepala loletsa moto: loletsa moto, loletsa carbonization ya moto, koma losayaka. Lopangidwa ndi pepala la asbestos, kapena loletsa moto ndi pepala loyenera (monga aluminiyamu hydroxide) ndi mankhwala.

Aluminium hydroxide si poizoni komanso yopanda kukoma, sisungunuka m'madzi, ndi mankhwala abwino oletsa kusagwirizana, mankhwala otsukira mano omwe amagwiritsidwa ntchito popanga aluminium hydroxide ndi olimba kwambiri (Mohs), kuuma kwa Mohs ndi 2.5-3.5, kuyera kwa oposa 99%, pH ndi 8.0-9.5, D50 ndi 8-15 micron, mtengo wake ndi wocheperako, ndi mankhwala abwino otsukira mano, fluoride ndi yogwirizana, komanso ndi yabwino kwambiri. Ndi mankhwala abwino kwambiri otsukira mano.

Mullite (kapena mullite) ndi mndandanda wa mchere wopangidwa ndi aluminosilicate. Mullite ndiye chinthu chokhacho chokhazikika cha zinthu ziwiri mu dongosolo la Al2O3 SiO2. Mtundu uwu wa mchere ndi wosowa kwambiri. Ndi mtundu wa refractory wapamwamba kwambiri, ndipo mullite imatha kupangidwa potenthetsa aluminiyamu silicate mwaluso. Mullite imagwiritsidwa ntchito kwambiri mu refractories, ceramics, metallurgy, casting, electronics ndi mafakitale ena. Ili ndi mawonekedwe a kukana kutentha kwambiri, mphamvu yayikulu komanso kutentha pang'ono.

Kuphatikiza apo, aluminiyamu hydroxide ingagwiritsidwe ntchito ngati marble wopangira, agate wopangira, chodzaza makapeti; kupanga aluminiyamu sulfate, alum, alumina, alumina wosungunuka, zinthu zamakina a sodium aluminate zopangidwa ndi rabara; choletsa moto; kugwiritsidwa ntchito ngati chodzaza ndi zowonjezera za zomatira ndi zomatira; sieve yopangidwa; ya antiacids ya m'mimba ndi zina zotero.

Gel ya aluminiyamu hydroxide ya mtundu wa gel ndi Aluminium Hydroxide Gel, boehmite, alumina yopanda mawonekedwe. Ili ndi guluu wabwino, woumba, wokana kutentha kwambiri, wokhoza kutentha kwambiri, wokhoza kutentha pang'ono, wokana dzimbiri komanso wokana okosijeni, wamphamvu kwambiri komanso wosalala pamwamba.

Aluminium hydroxide ndi chimodzi mwa zinthu zazikulu zomwe zimagwiritsidwa ntchito popanga gel ya aluminiyamu m'mimba, yomwe ndi mankhwala a m'mimba ndi asidi, mankhwala achikhalidwe, mankhwala ophatikizika monga vitamini U ndi makapisozi a aluminiyamu, Mapiritsi a Aluminium Hydroxide ndi zinthu zina zazikulu, zingagwiritsidwenso ntchito ngati mankhwala. Njira yake yogwiritsira ntchito asidi ya m'mimba ndi Al (OH)3+6HCl=2AlCl3+3H2O. Alumina yamadzi asanu ndi limodzi yopangidwa kuchokera ku aluminium hydroxide ingagwiritsidwe ntchito ngati chothandizira pa ntchito ya mankhwala ndi zodzoladzola.

Kukonza pamwamba ndi guluu wa Aluminium Hydroxide Gel ikhoza kupangidwa ndi ulusi wosapangidwa ndi zinthu zachilengedwe kapena zachilengedwe, pogwiritsa ntchito kukana kutentha kwambiri komanso kutha kwake pamwamba, komwe kumagwiritsidwa ntchito kwambiri popanga ziwiya zapamwamba za ceramic, komanso kugwiritsidwa ntchito popanga porcelain yamagetsi; nthawi yomweyo ndi chinthu chodzaza zinthu zosapangidwa ndi zinthu zachilengedwe.