ʻO nā pōhaku kalapona Magnesia kahi ʻano o ka mea hoʻoheheʻe kalapona i hoʻopau ʻole ʻia, i hana ʻia me ka magnesium oxide o ka alkaline oxide me ka helu hoʻoheheʻe kiʻekiʻe (2800 ℃), a me nā mea kalapona me ka helu hoʻoheheʻe kiʻekiʻe e paʻakikī ke hoʻopau ʻia e ka umu ahi. nā mea maka, a hoʻohui i nā ʻano mea hoʻohui ʻole a me nā mea hoʻopaʻa kalapona. He mau hiʻohiʻona ka pōhaku kalapona Magnesia i ka porosity haʻahaʻa, ke kūpaʻa ʻana o ka slag erosion, ke kūpaʻa haʻalulu wela a me ka ikaika kiʻekiʻe kiʻekiʻe. E like me ke ano o ka composite refractory, magnesia kalapona ahi pōhaku lepo hoʻohana ikaika slag corrosion o ka magnesia a kiʻekiʻe thermal conductivity a haʻahaʻa expansibility o kalapona efficiently, hiki ke hana no ka nui hemahema o ka ino spalling kū'ē o ka magnesia.
ʻO nā ʻāpana kalapona Magnesia nā mea nui o ka magnesium oxide a me ke kalapona, kahi o 60 ~ 90% o ka magnesium oxide a me 10 ~ 40%. Hana ʻia kēia ʻano mea me ka ʻāpana magnesia maʻemaʻe kiʻekiʻe, mea kalapona, tar, pitch a i ʻole resin e like me nā mea maka ma o ka kuke ʻana i ka wela wela. No laila, loaʻa i nā pōhaku kalapona magnesite nā waiwai o ka pale ʻana i ka pala, ke kūpaʻa haʻalulu, ka conductivity thermal a me nā mea ʻē aʻe.
E like me nā ʻenehana hui ʻana me ka mea hoʻopaʻa paʻa tar, lilo ia i mea paʻakikī a loaʻa ka ikaika e pono ai, pēlā e hana ai i ke kalapona vitric isopous. Hana ʻia nā pōhaku kalapona Magnesia me ka mea hoʻopaʻa paʻa, ʻoi aku ka kiʻekiʻe o ka plasticity kiʻekiʻe ma muli o ka hana ʻana i ka anisotropic graphitization coke structure i ke kaʻina hana carbonation pitch. ʻAʻole hōʻike kēia ʻano kalapona i ka thermoplasticity hiki ke hoʻopau pono i ka nui o ke koʻikoʻi i ke kaʻina o ke kī ʻana a i ʻole ka hana ʻana.
Nā mea | MC8 | MC10 | MC12 | MC14 | MC18 | |
ʻIke ʻia ka porosity% ≤ | 5.0 | 4.0 | 4.0 | 3.0 | 3.0 | |
ʻAno nui g/cm3 ≥ | 3.00 | 3.00 | 2.98 | 2.95 | 2.92 | |
Ka ikaika hoʻoemi anu MPa≥ | 50 | 40 | 40 | 35 | 35 | |
Kemika haku mele% | MgO ≥ | 84 | 82 | 76 | 76 | 72 |
C ≥ | 8 | 10 | 12 | 14 | 18 | |
Palapala noi | Hoʻohana maʻamau | Pale ʻino | Kū'ē Kū'ē Kū'ē |
Hoʻohana nui ʻia nā pōhaku kalapona Magnesia no nā linings o ka mea hoʻololi, ka umu uila-arc a me ke kapuahi uila uila o kēia manawa, ka laina slag o ka ladle kila a me nā kūlana ʻē aʻe. a hiki ke hoʻohana ʻia no ka umu oxygen kumu, ka laina slag o ka umu ladle a me ka wahi wela o ka umu ahi arc.
ʻO ka hale hana refractory RS ma ke ʻano he kiln kiln magnesite carbon bricks, hiki ke hāʻawi i ka maikaʻi o ka magnesia carbon bricks no nā mea kūʻai aku me nā ʻenehana loea, ʻenehana hana kiʻekiʻe a maikaʻi ma mua o ke kūʻai aku a me ka lawelawe ma hope o ke kūʻai aku. ʻO ka hale hana refractory RS he loea i nā pōhaku ahi kalapona magnesite no nā makahiki he 20. Inā loaʻa iā ʻoe kekahi koi o ka magnesia carbon brick, e kelepona mai iā mākou no ka manuahi, e pane kā mākou kūʻai aku iā ʻoe i ka manawa mua.