Kūleʻa ʻino o nā Piliki Lining Ceramic Alumina

Loaʻa i nā pōhaku lepo seramika aluminaʻoi aku ka maikaʻi o ka corrosionme ka paʻa paʻa kemika ikaika loa, a hiki ke mālama i ka pale ʻana i ka corrosion maikaʻi ma ka hapa nui o ka waikawa, ka alkali, ka paʻakai paʻakai a me nā kaiapuni corrosion. Eia nō naʻe, ʻokoʻa kā lākou hopena pale corrosion me ka ʻike alumina, ke ʻano waena a me ka mahana lawelawe, me nā hana kikoʻī penei:

Kūleʻa ʻino i ka Media Acid

ʻO nā pōhaku lepo lepo lepo alumina maikaʻi ke kūpaʻa i ka corrosionnā ʻakika non{0}}oxidizing(e like me hydrochloric acid, dilute sulfuric acid, phosphoric acid) ma ka lumi wela, a aneane ʻaʻohe hopena kemika. Akā, i loko o ka -mahanahana a i ʻole nā ​​kaiapuni oxidizing acid concentrated (e like me ka sulfuric acid concentrated, concentrated nitric acid, aqua regia), e ʻino mālie ʻia ko lākou ʻili, ʻoi aku ka nui no ka hoʻopili ʻana i nā pōhaku lepo me ka ʻike alumina ma lalo o 95%, e piʻi ka nui o ka corrosion. No ka laʻana, i ka dilute hydrochloricʻakika ma ka lumi wela, ka corrosion rate o 99% alumina seramika mea emi ma mua o 0.01mm / makahiki, oiai i loko o ka sulfuric waika ma 100 degere, piʻi ka corrosion rate i 0.1-0.5mm / makahiki.

Kūleʻa ʻino i ka Media Alkaline

He kūpaʻa maikaʻi nā alumina seramika i nā alkalina nāwaliwali ma ka lumi wela (e like me ka dilute sodium hydroxide solution, ka wai amonia), akā i lokokiʻekiʻe -mahana a me ka alkali ikaikanā kaiapuni (e like me ka sodium molten hydroxide, concentrated potassium hydroxide solution), e hana kemika ka alumina me ka alkali e hana i ka alumina, e alakaʻi ana i ka hoʻoneʻe mālie ʻana o ka ʻili pōhaku lepo. No laila, pono e hoʻohana makaʻala i nā pōhaku lepo ʻeleʻele alumina i nā kūlana hana me ka alkali ikaika a me ka wela kiʻekiʻe, a i ʻole e koho ʻia nā mea kūʻokoʻa alkali -e like me ka silicon carbide ceramics.

Kūleʻa ʻino i ka Media paʻakai

No nā haʻina paʻakai maʻamau (e like me ka sodium chloride, calcium chloride, magnesium sulfate, a me nā mea ʻē aʻe), hiki i nā pōhaku lepo keraika alumina ke pale piha iā lākou ma ka lumi wela a me ke anawaena -maha haʻahaʻa (emi a like paha me ka 100 degere), me ka pilikia ʻole e like me ka dissolution, oxidation a i ʻole electrochemical corrosion. He kumu koʻikoʻi kēia no kā lākou noi ākea i ka paʻakai paʻakai a i ʻole ka hopena paʻakai i nā kūlana hana i ka mining, kemika a me nā ʻoihana ʻē aʻe.

ʻO ka mana o ka ʻike alumina ma ka pale ʻana i ka corrosion

ʻOi aku ka kiʻekiʻe o ka maʻiʻo alumina, ʻoi aku ka ikaika o ka compactness a me ka paʻa kemika o ka ceramic, a ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion . 92% alumina ceramic lining bricks hiki ke hoʻokō i nā koi o ka waika nāwaliwali maʻamau, nāwaliwali alkali a me nā kūlana hana paʻakai; Hiki i ka 95%-99% alumina nā pōhaku lepo keramik ke hoʻopaʻa i nā pōʻino koʻikoʻi loa, e like me ka ʻakika kiʻekiʻe a me ka paʻakai paʻakai; Hiki ke ho'ohana 'ia ka alumina ma'ema'e ki'eki'e me ka 99.5% o ka alumina no ka manawa pōkole ma kekahi mau kūlana hana waika ki'eki'e.