HANA
ʻO nā Bricks Mullite māmā 0.6
ʻO ka wehewehe ʻana o ka Brick Mullite māmā
ʻO nā mea hoʻoheheʻe alumina kiʻekiʻe me ka mullite e like me ke ʻano kristal nui maʻamau i loaʻa ka ʻike alumina o 50% -75%. Hiki ke piʻi ka mahana refractory o nā pōhaku māmā mullite ma luna o 1790 ℃. ʻO ka wela hoʻomaka ʻana o ka haʻahaʻa he 1600-1700 ℃. ʻO ka pale wela o ka lumi he māmā 70-260MPa. Kūleʻa haʻalulu wela maikaʻi. ʻElua ʻano: nā pōhaku lepo mullite sintered a me nā pōhaku lepo mullite fused.
Hana ʻia nā pōhaku lepo mullite me ke kiʻekiʻe-alumina bauxite clinker ma ke ʻano he kumu nui, me ka liʻiliʻi o ka pālolo a i ʻole ka bauxite maka e like me ka mea hoʻopili, a ua hana ʻia a hoʻopaʻa ʻia. Hana ʻia nā pōhaku lepo mullite me ka bauxite alumina kiʻekiʻe, ka alumina ʻoihana a me ka pālolo refractory, me ka lanahu a i ʻole coke mau mea i hoʻohui ʻia ma ke ʻano he mea hoʻemi. Ma hope o ka hoʻokumu ʻana, hana ʻia lākou e ke ʻano hoʻohaʻahaʻa fusion. ʻOi aku ka nui o nā kristal o fused mullite ma mua o nā mullite sintered, a ʻoi aku ka maikaʻi o ke kūʻē ʻana o ka wela ma mua o nā huahana sintered. ʻO kā lākou hana wela kiʻekiʻe e hilinaʻi nui ʻia i ka ʻike o ka alumina a me ke kūlike o ka hāʻawi ʻana i ka pae mullite a me ke aniani.
ʻO kahi mea refractory kiʻekiʻe-alumina me ka mullite (3Al2O3 · 2SiO2) ma ke ʻano he aniani nui. ʻO ka ʻike alumina maʻamau ma waena o 65% a me 75%. Ma waho aʻe o ka mullite, aia i loko o ka minerale kahi mea liʻiliʻi o ka māhele aniani a me ka quartz me kahi haʻahaʻa alumina haʻahaʻa; a me kahi mea liʻiliʻi o ka corundum me kahi mea alumina kiʻekiʻe. Hiki ke hoʻohana pololei ʻia nā pōhaku lepo mullite māmā no nā lining kiln kiʻekiʻe, a ua hoʻohana nui ʻia i kēia manawa i nā kiln shuttle, roller kilns, aniani a me ka petrochemical kiln linings.
ʻO nā ʻāpana kino a me nā kemika o nā pōhaku mullite māmā penei:
Hoʻopili ʻia i:
ʻO ke aniani hoʻoheheʻe ʻana i ka umu pōhaku ma luna o ka hale kanal, nā papa hoʻololi, ka hoʻoponopono ʻana i ka hale kiln ma luna, nā pōhaku lepo hoʻoheheʻe E-aniani. ʻO nā kiln ahi, nā kiln hoʻoheheʻe, nā mea hoʻomaʻemaʻe, nā mea hoʻomehana, a me nā mea wela ʻē aʻe. Nā wahi noi: ʻoihana seramika, ʻoihana aniani, ʻoihana kila, ʻoihana petrochemical, ʻoihana aluminika, a me nā ʻoihana ʻē aʻe.