Hoʻohui ʻia o Fused Spinel a Sintered Spinel
ʻO Spinel (MgO·Al2O3, i hoʻopau ʻia ʻo MA) ʻo ia wale nō ka hui binary i loko o ka ʻōnaehana binary MgO-Al2O3.Hiki iā ia ke hoʻoheheʻe hapa me MgO a me Al2O3 e hana i kahi hopena paʻa palena.Hoʻokumu ʻia ka spinel solution solid Corundum (α-Al2O3) i ka haku mele waiwai nui o Al2O3;Hoʻokumu ʻia ka spinel solution solid periclase i loko o ka haku mele MgO.Loaʻa ka hiki ke hoʻoheheʻe paʻa loa ma nā mahana eutectic ʻelua i kālailai ʻia o MA-Al2O3 a me MgO-MA, ʻo ia ka 1925 °C a me 1995 °C.
Ke hana ʻo MgO a me Al2A i ka spinel e like me ka haku mele ʻana, e hoʻohua ʻia ma kahi o 8% ka hoʻonui ʻana o ka leo, no laila he paʻakikī ke hoʻopaʻa ʻia i ka wā i hoʻopaʻa ʻia, a ʻoi aku ka maʻalahi o ka hoʻoheheʻe ʻana me MgO a i ʻole Al: ke kiko ʻoi o ka hopena paʻa MgO a i ʻole Al2O3 Spar i ʻoi aku ka maikaʻi o ka haʻalulu wela ma muli o ka ʻokoʻa o ka hoʻonui ʻana ma waena o nā minela.
E like me ke ʻano synthesis o spinel, hiki ke hoʻokaʻawale ʻia i loko o ka spinel sintered, fused spinel a me ka spinel hana, me ka spinel kiʻekiʻe.
1. Hoʻokumu ʻia ka spinel sintered a me ka spinel electrofused e ka sintering a me nā ʻano electrofusion, kēlā me kēia;
2. Hoʻohui pū ʻia ka spinel ma muli o ke ʻano sintering, akā ʻokoʻa mai ka spinel sintered, haʻahaʻa ka mahana synthesis (1200-1300 ℃), a ʻaʻole i hoʻololi piha ʻia ka hui ʻana i spinel, akā aia kahi liʻiliʻi o ka α -Al2O3 manuahi a a i ʻole MgO manuahi, hoʻohana nui ʻia ia e like me ka matrix o nā spinel refractory a i ʻole ka hana ʻana o ka spinel kiʻekiʻe.
3. ʻOi aku ka nui o ka nui o ka spinel kiʻekiʻe ma mua o 3.40g/cm3, hana mau ʻia me ka pauka spinel ikaika ma ke kaomi ʻana i ka Ball a i ʻole kaomi ʻia, sintered ma kahi kiʻekiʻe ma kahi o 1700 ° C.
4. ʻO Fused spinel kahi ʻano mea hoʻomaʻemaʻe synthetic refractory kiʻekiʻe, i hana ʻia me ka alumina a me ke kukui maʻemaʻe kiʻekiʻe i puhi ʻia i ka magnesium ma ke ʻano he kumu kumu a hoʻoheheʻe ʻia ma hope o ka hoʻoheheʻe ʻana i kahi wela kiʻekiʻe ma luna o 2300 ℃ i loko o ka umu ahi arc.
ʻO ka fused alumina magnesia spinel he kiʻekiʻe kiʻekiʻe ka nui a he kūpaʻa maikaʻi ka corrosion, pale pale a me ke kūpaʻa haʻalulu wela.Eia ke kiʻi o ka hui ʻo Yufa Group i hui pū ʻia:
No ka ʻike hou aku e kelepona iā Mr. Dr. Arthur.
Email: arthur@yfml.com
Whatapp: 00861583807142
Ka manawa hoʻouna: ʻAukake-27-2022
