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Hoʻolauna

Ma nāʻoihana wela-mai ka hana kila a hiki i ka hana aniani-ʻo nā mea refractory ka iwi kuamoʻo o nā hana palekana a maikaʻi. Ma waena o kēia mau mea,mullite brickskū i waho no ko lākou kūpaʻa wela ʻokoʻa, kūpaʻa i ka corrosion, a me ka ikaika mechanical. He mea koʻikoʻi ka hoʻomaopopo ʻana i kā lākou hoʻokaʻawale ʻana a me nā noi no nā ʻoihana e ʻimi nei e hoʻonui i ke ola o nā lako hana a hōʻemi i nā kumukūʻai hana. Hoʻokaʻawale kēia ʻatikala i nā ʻano nui o nā pōhaku mullite a me kā lākou hoʻohana honua maoli, e kōkua ana iā ʻoe e hoʻoholo i ka ʻike no kāu pono ʻoihana.

ʻO ka hoʻokaʻawale ʻana o nā Bricks Mullite

Hoʻokaʻawale ʻia nā pōhaku Mullite e pili ana i nā kaʻina hana a me nā ʻāpana i hoʻohui ʻia, kēlā me kēia mea i kūpono i nā koi ʻoihana kikoʻī.

1. Nā Piliki Mullite Sintered

Hana ʻia e ka hui ʻana i ka alumina maʻemaʻe kiʻekiʻe a me ka silica, ka hoʻoheheʻe ʻana i ka hui ʻana, a me ka sintering iā ia ma nā mahana ma luna o 1600 ° C, ʻo nā pōhaku lepo mullite sintered e hoʻokiʻekiʻe a me ka porosity haʻahaʻa (ma lalo o 15%). Hāʻawi kēia mau hiʻohiʻona iā lākou i ke kūpaʻa ʻaʻahu maikaʻi loa a me ke kūpaʻa haʻalulu wela—kūpono no nā kaiapuni me ka loli pinepine o ka mahana. ʻO ka hoʻohana maʻamau e pili ana i nā linings no nā kiln seramika, nā kapuahi puhi wela wela, a me nā keʻena puhi paila.

2. Nā Piliki Mullite Fused-cast

Hana ʻia e ka hoʻoheheʻe ʻana i nā mea maka (alumina, silica) i loko o ka umu ahi arc (ma luna o 2000°C) a me ka hoʻolei ʻana i ka hui ʻana i hoʻoheheʻe ʻia i loko o nā mole, ʻo nā pōhaku lepo mullite fused-cast i loaʻa nā pae haumia haʻahaʻa haʻahaʻa a me ka maʻemaʻe crystalline kiʻekiʻe. ʻO ko lākou kūpaʻa maikaʻi ʻana i ka hoʻoheheʻe kemika (e laʻa, mai ke aniani hoʻoheheʻe ʻia a i ʻole nā palapaʻa) he mea koho maikaʻi loa ia no nā mea hoʻoheheʻe umu aniani, ʻauʻau ʻauʻau aniani lana, a me nā mea hana ʻē aʻe i ʻike ʻia i ka media hoʻoheheʻe ikaika.

3. Nā Pilikia Mullite māmā

Hana ʻia ma ka hoʻohui ʻana i nā mea hana pore-forming (e laʻa, sawdust, graphite) i ka wā o ka hana ʻana, he porosity o 40-60% nā pōhaku lepo māmā a haʻahaʻa loa ma mua o nā ʻano sintered a fused-cast. ʻO kā lākou pōmaikaʻi nui, ʻo ia ka haʻahaʻa haʻahaʻa haʻahaʻa (0.4–1.2 W/(m·K)), e hōʻemi ana i ka nalowale o ka wela. Hoʻohana nui ʻia lākou ma ke ʻano he papa insulation i nā kilns, umu ahi, a me nā mea hoʻomaʻamaʻa wela, kahi o ke kaumaha a me ka ikaika o ka ikehu ka mea nui.

4. Nā Piliki Zircon Mullite

Ma ka hoʻokomoʻana i ka zircon (ZrSiO₄) i loko o ka hui maka, loaʻa nā pōhaku lepo zircon mullite i hoʻonuiʻia i ka hana wela kiʻekiʻe-hiki iā lākou ke pale i nā mahana a hiki i ka 1750 ° C a me ka paleʻana i ka erosion mai nā palaka acidic. He mea kūpono kēia no nā wahi ʻino e like me nā umu hoʻoheheʻe metala non-ferrous (e laʻa, nā keena hoʻemi aluminika) a me nā ʻāpana puhi ahi ʻōpala.

Nā hoʻohana ʻana i nā Bricks Mullite

ʻO ka versatility ʻo Mullite bricks he mea nui ia ma nā ʻoihana wela kiʻekiʻe

1. ʻOihana kila

ʻO ka hana kila e pili ana i nā wela kiʻekiʻe (a hiki i 1800 ° C) a me nā slags corrosive. ʻO nā pōhaku lepo mullite i hoʻopaʻa ʻia e laina i nā kapuahi wela wela, kahi e pale ai ko lākou pale ʻana i ka haʻalulu wela i ka haki ʻana mai ka hoʻomehana wikiwiki ʻana. Mālama nā ʻano like ʻole Fused-cast i nā ladles a me nā tundishes, e hōʻemi ana i ka ʻinoʻino a me ka hoʻonui ʻana i ke ola o nā mea hana ma 20-30% i hoʻohālikelike ʻia me nā refractory kuʻuna.

2. ʻOihana Sima

Hoʻohana ʻia nā kiln rotary sima ma 1450–1600°C, me nā ʻōpala alkaline e hōʻike ana i kahi pōʻino nui. ʻO nā pōhaku lepo Zircon mullite e hoʻopaʻa i ka ʻāpana ahi o ka kiln, e pale ana i ka hoʻouka ʻana i ka alkali a me ka mālama pono ʻana i ke kūkulu ʻana. ʻO nā pōhaku lepo mullite māmā hoʻi e hana i nā papa insulation, e ʻoki ana i ka hoʻohana ʻana i ka ikehu ma 10-15%.

3. ʻOihana aniani

ʻO ke aniani hoʻoheheʻe ʻia (1500–1600°C) he mea ʻino loa ia, e hana ana i nā pōhaku lepo mullite fused-cast i mea nui no nā mea hoʻohou i ka umu aniani a me nā lining pahu. Kāohi lākou i ka hoʻohaumia ʻana i ke aniani a hoʻonui i ka manawa holo o ka umu i 5-8 mau makahiki, mai 3-5 mau makahiki me nā mea ʻē aʻe.

4. Nā ʻoihana ʻē aʻe

I loko o ka ho'ohehe'e 'ana i ka metala 'ole (alumini, keleawe), zircon mullite bricks ke kū'ē i ka metala ho'ohehe'e a me ka pala. I loko o nā petrochemical, nā pōhaku lepo mullite sintered i nā kapuahi kapuahi ma muli o ko lākou kūpaʻa wela. I loko o nā seramika, hoʻokaʻawale nā pōhaku mullite māmā i nā kiln, e hoʻohaʻahaʻa i ka hoʻohana ʻana i ka ikehu

Ka hopena

ʻO nā ʻano ʻano like ʻole o nā pōhaku Mullite—sintered, fused-cast, lightweight, a me zircon—e hoʻokō i nā pono kūikawā o nā ʻoihana wela kiʻekiʻe. Mai ka hoʻonui ʻana i ka pono o ka umu ahi a hiki i ka hoʻonui ʻana i ke ola o ka umu aniani, hāʻawi lākou i nā pōmaikaʻi maoli: ʻoi aku ka lōʻihi o ke ola ʻana o nā mea hana, haʻahaʻa i nā kumukūʻai ikehu, a hoʻemi ʻia ka manawa hoʻomaha. Ke ʻimi nei nā ʻoihana i ka ʻoihana kiʻekiʻe a me ka hoʻomau ʻana, e noho mau nā pōhaku mullite i mea koʻikoʻi. E koho i ke ʻano kūpono no kāu noi, a wehe i ko lākou hiki piha.