ʻO ka pauka alumina

E hoʻoikaika mākou i kēlā me kēia kanaka e lilo i mea kūʻokoʻa a maikaʻi loa, a e wikiwiki i kā mākou mau ala no ke kū ʻana i loko o ke kūlana o nā ʻoihana kiʻekiʻe a me nā ʻenehana kiʻekiʻe no ka honua.ʻO ka pauka alumina, E uku ʻia nā koi mai iā ʻoe me kā mākou nānā maikaʻi loa!
E hoʻoikaika mākou i kēlā me kēia kanaka e lilo i mea kūʻokoʻa a maikaʻi loa, a e wikiwiki i kā mākou mau ala no ke kū ʻana i loko o ke kūlana o nā ʻoihana kiʻekiʻe a me nā ʻenehana kiʻekiʻe no ka honua.ʻO ka pauka alumina, No ka hana ʻana i nā mea hoʻomohala hou aku, mālama i nā huahana kiʻekiʻe a me nā hoʻonā a hōʻano hou ʻaʻole i kā mākou waiwai wale nō akā iā mākou iho i mea e hoʻomau ai iā mākou ma mua o ka honua, a ʻo ka mea hope akā koʻikoʻi loa: e hōʻoluʻolu i kēlā me kēia mea kūʻai aku i nā mea āpau a mākou e hāʻawi ai iā ʻoe. a e ulu ikaika pu.No ka lanakila maoli, e hoʻomaka ma ʻaneʻi!

ʻElima mau hiʻohiʻona o ka pauka alumina kiʻekiʻe

1. Ke kū'ē kemika;
2. ʻO ka alumina maʻemaʻe kiʻekiʻe, ʻoi aku ka nui o ka alumina ma mua o 99%;
3. ʻO ke kūpaʻa wela kiʻekiʻe, hoʻohana maʻamau ma 1600 ℃, pōkole 1800 ℃;
4. Kū'ē i ke anuanu a me ka wela,ʻaʻole maʻalahi ke pohā;
5. Hoʻohana ia i ka grouting a he kiʻekiʻe kiʻekiʻe.
1. Hoʻohana i ka pauka alumina α-type

I loko o ka lattice aniani o ka pauka alumina α-type, ua hoʻopili ʻia nā ion oxygen i nā hexagons, a ua puʻunaue like ʻia ʻo Al3+ i loko o ke kikowaena hoʻonohonoho octahedral i hoʻopuni ʻia e nā ion oxygen.Nui loa ka ikehu lattice, no laila kiʻekiʻe loa ka helu heheʻe a me ka helu hoʻolapalapa.α-type oxidation ʻAʻole hiki ke hoʻoheheʻe ʻia ka alumini i ka wai a me ka waika.Ua kapa ʻia ʻo ia ka alumini oxide ma ka ʻoihana.ʻO ia ke kumu kumu no ka hana ʻana i ke alumini metala;Hoʻohana ʻia ia e hana i nā pōhaku ʻokoʻa refractory, refractory crucibles, refractory tubes, a me nā mea hoʻāʻo wela kiʻekiʻe;hiki ke hoʻohana ʻia e like me nā abrasives a me nā mea pale ahi.Nā Agena, nā mea hoʻopihapiha, a me nā mea'ē aʻe;ʻO ka alumina α-type hoʻomaʻemaʻe kiʻekiʻe ka mea maka no ka hana ʻana i ka corundum artificial, artificial ruby ​​​​a me sapphire;hoʻohana pū ʻia no ka hana ʻana i nā kaapuni hoʻohui nui o kēia wā.

Loaʻa i ka alumina i hoʻāla ʻia ka mana adsorption koho no ke kinoea, ka mahu wai a me kekahi wai wai.Ma hope o ka hoʻopihaʻiaʻana o ka adsorption, hiki ke ho'ōla houʻia ma ka hoʻomehanaʻana ma kahi o 175-315 ° C e wehe i ka wai.Hiki ke hana ʻia ka Adsorption a me ke ala hou ʻana i nā manawa he nui.Ma waho aʻe o ka hoʻohana ʻia e like me ka desiccant, hiki iā ia ke adsorb i ka mahu o ka ʻaila lubricating mai ka oxygen haumia, hydrogen, carbon dioxide, kūlohelohe kino, etc.

ʻO ka pauka alumina ka mea nui no ka hana ʻana i nā alumini ingots.Loaʻa iā ia nā hiʻohiʻona o ka lele māmā, ka wai maikaʻi, hoʻopau maʻalahi a me ka absorption fluorine ikaika.He kūpono ia no ka hana ʻana i ka alumini metala e ka electrolysis paʻakai hoʻoheheʻe.He mea koʻikoʻi ia no ka hana ʻana i ka corundum, keramika a me nā refractory.