Nā ʻano a me nā ʻano hoʻohana o nā mea refractory no nā kapuahi hehee ʻoihana

ʻO nā lako wela nui o kakapuahi hoohehee haname ka calcination a me ka sintering kapuahi, electrolytic tank akapuahi hoohehee.ʻO ka uhi ʻana o ka ʻāpana ahi o ka rotary kiln i kūkulu ʻia me nā pōhaku alumina kiʻekiʻe, a hiki ke hoʻohana ʻia nā pōhaku lepo e like me ke kapa no nā ʻāpana ʻē aʻe.Hoʻomoe ʻia kahi papa o ka fiber refractory ma luna o ka ʻāpana insulation wela kokoke i ka pūpū umu, a laila kūkulu ʻia kahi papa o nā pōhaku māmā a i ʻole nā ​​​​pilikia māmā.Ka maikaʻi refractory castable ninini.

ʻO ka pūpū o ka cell electrolytic i hana ʻia me ka pā kila, a waiho ʻia kahi papa o ka insulation board a i ʻole refractory fiber manaʻo i loko o ka pūpū, a laila kūkulu ʻia nā pōhaku māmā a i ʻole e ninini ʻia nā castables refractory māmā, a laila kūkulu ʻia nā pōhaku lepo. e hana i kahi papa hana ʻole, a hana ke kelepona electrolytic Hiki ke hana ʻia ka papa me nā mea hoʻoheheʻe kalapona a silicon carbide refractory me ka conductivity uila maikaʻi, i mea e pale aku ai i ke komo ʻana o ka alumini hoʻoheheʻe a me ka erosion o ka fluoride electrolyte.I ka wā ma mua, ua kūkulu ʻia ka papa hana o ka paia o ka cell electrolytic cell me nā poloka kalapona.I nā makahiki i hala iho nei, ua hoʻohana ʻo Iapana a me kekahi mau ʻāina ma ʻEulopa Komohana i nā pōhaku silika carbide i hui pū ʻia me ka nitride silika e kūkulu ai, a loaʻa nā hopena maikaʻi.

ʻO ka papa hana ma lalo o ke kelepona electrolytic i kūkulu ʻia me nā poloka kalapona me nā hui liʻiliʻi a hoʻopiha ʻia me ka paʻi kalapona e pale aku i ke komo ʻana o ka solution alumini a hoʻonui i ka conductivity.

ʻO ka alumini i hoʻohana pinepine ʻiamea hooheheeʻo ia ka umu hoʻopāpā.ʻO ka uhi o ka umu ahi e pili ana me ka hoʻonā alumini ka mea maʻamau i kūkulu ʻia me nā pōhaku alumina kiʻekiʻe me kahi kikoʻī A1203 o 80% -85%.I ka hoʻoheheʻe ʻana i ka alumini metala hoʻomaʻemaʻe kiʻekiʻe, pono e hoʻohana ʻia nā pōhaku mullite a i ʻole nā ​​pōhaku corundum.I kekahi mau hale hana, hoʻohana ʻia nā pōhaku lepo silicon carbide i hui pū ʻia me ka silicon nitride no ka masonry ma nā ʻāpana i hiki ke hoʻopau ʻia a ʻaʻahu ʻia, e like me ka pali o ka puʻu ahi a me nā mea alumini ʻōpala.Hoʻohana pū ʻia nā pōhaku lepo i hoʻopaʻa ʻia iā ia iho a i ʻole ka nitride silicon carbide e like me nā linings me nā pōhaku zircon.No ka hoʻopaʻa ʻana i ka puka alumini, ʻoi aku ka maikaʻi o ka hopena o ka hoʻoheheʻe ʻana i ka vacuum refractory fiber.Hoʻokumu pinepine ʻia nā pale umu ahi i pili ʻole i ka hoʻonā alumini me nā pōhaku lepo, nā mea hoʻoheheʻe pālolo a i ʻole nā ​​​​plastika refractory.I mea e wikiwiki ai ka hoʻoheheʻe ʻana a me ka mālama ʻana i ka ikehu, hoʻohana mau ʻia nā pōhaku lepo māmā, nā mea hoʻoheheʻe refractory māmā a me nā huahana fiber refractory e like me nā papa insulation wela.

ʻO ka umu hoʻoheheʻe alumini hoʻoheheʻe induction crucible umu hoʻohana maʻamau.Hana ʻia ka lining me ke kiʻekiʻe-alumina refractory castable a refractory ramming mea me A1203 maʻiʻo o 70% -80%, a hoʻohana pū ʻia ka corundum refractory concrete e like me ka lining.

Kahe ka alumini hoohehee mai ka puka alumini o ka umu ahi ma o ka pahu kahe alumini.Hana ʻia ka pahu pahu me nā pōhaku lepo silicon carbide, a aia kekahi mau poloka i hana mua ʻia o ke one silica fused.Inā hoʻohana ʻia ka poloka i hana mua ʻia ma ke ʻano he pahu pahu, pono e uhi ʻia ka ʻili me ke one silica fused a i ʻole E hoʻohana i ke kima alumina kiʻekiʻe i hoʻohui ʻia i ke one silica refractory castable ma ke ʻano he pale.