HANA
Brick Silica māmā māmā 1.0
Ka wehewehe kikoʻī
Hoʻohana nā pōhaku lepo silica māmā i ka silica i ʻoki ʻia e like me ka mea maka, a ʻo ko lākou nui koʻikoʻi ʻaʻole i ʻoi aku ma mua o 1mm, a ʻo nā mea liʻiliʻi ma lalo o 0.5mm ʻaʻole i emi iho ma mua o 90%. Hoʻohui ʻia nā mea inflammable i nā mea hoʻohui a i ʻole ke ʻano hana hana kinoea i hoʻohana ʻia e hana i kahi hale porous, a laila puhi ʻia. Hiki ke hana ʻia i nā huahana unfired. Hoʻohana nui ʻia ia i nā ʻāpana like ʻole o nā kiln e pono ai ka insulation a i ʻole ka hoʻohaʻahaʻa paona ponoʻī me ka ʻole o ka hoʻopili pololei ʻana me ka hoʻoheheʻe ʻana, me ka ʻole o ka hopena o nā kinoea corrosive, a me ka hoʻololi ʻole o ka wela. Hoʻohana ʻia ia i nā wela kiʻekiʻe a ʻaʻole hiki ke hoʻopili me nā mea refractory alkaline. Ma muli o ka mea, kona hoʻohana wela ma waena o 1200 a me 1550 ℃.
ʻO nā pōhaku lepo silica māmā he mea kūikawā loa, hoʻohana nuiʻia i kaʻoihana aniani a me kaʻoihana kila. I ka hapanui o nā hihia, hoʻohana ʻia nā pōhaku silica māmā a me nā pōhaku silica paʻa e like me nā ʻāpana papa hana. Hoʻohana maʻamau i ka ʻoihana kiln aniani, ka mea nui no ka insulation o ka pahu kiln, a laila e hōʻemi ana i ka nalowale o ka wela a hoʻonui i ka pono o ke kaʻina hoʻoheheʻe. I ka ʻoihana hana kila, hoʻohana ʻia nā pōhaku silica māmā no ka māmā o nā paia o ka umu ahi wela a me nā domes.
1. Hoʻohana ʻia nā pōhaku silica māmā i loko o ka ʻoihana aniani - ka hoʻoheheʻe wela o nā pahu kapuahi.
Ma ke kaʻina hoʻoheheʻe aniani, loaʻa nā wela kiʻekiʻe ma ka ʻaoʻao haʻahaʻa o ka waihona. Ma muli o ke ʻano o ke aniani, aia ka mahana ma kahi o 1600°C. Hoʻolālā pinepine ʻia ka papa māmā ma ke ʻano he ʻelua a ʻoi aku paha.
Hōʻike nui ʻia nā pōhaku silica māmā i kēia mau haʻahaʻa wela. Manaʻo ʻia ʻo ka papa hoʻokahi o ka vault (ke ʻano a me ka papa māmā) i like a like paha nā waiwai hoʻonui. Hiki i nā pōhaku silica me ka nui nui o 1250kg·m-3 a i ʻole 1000kg·m-3 ke hoʻokō i nā koi o ka papa paʻa. ʻO ka papa aʻe e hoʻohana i nā pōhaku silica me ka nui o 800Kg·m-3 a i ʻole 600kg·m-3.
Hiki ke hoʻopaʻa wale ʻia nā pōhaku silica māmā ma luna o ka pahu kapuahi a hoʻopaʻa ʻia me ka pālolo ahi silica. ʻAʻohe ukana kemika i ke ola o ka umu ahi (he mau makahiki). Hoʻohana nui ʻia nā pōhaku silica māmā no ka mea ua like ke ʻano kemika a me ka mineral o ka lining hana me nā pōhaku silica paʻa i hoʻohana ʻia.
2. Hoʻohana ʻia nā pōhaku lepo silica māmā i ka ʻoihana kila - nā umu wela wela
Hoʻohana pinepine ʻia nā kapuahi wela no ka ea wela (i kapa ʻia ʻo blast furnace blast), i hoʻopili ʻia me ka peʻahi hoʻopau o ka umu ahi. Ma muli o keʻano a me kahi o ka umu wela wela, aia ka mahana wela ma waena o 1000 a me 1300 ° C, aʻo ka ea wela ma ka laulā o 2300 a 6500 m3 · min-1.
Pono kēia e helu i ka hoʻohālikelike ʻana ma waena o ka umu wela wela (nā ʻāpana like ʻole a me nā wahi hoʻohana) a me ka dome kiln aniani ma nā pae like ʻole a me nā ukana like ʻole, e kālele ana i nā waiwai thermomechanical. No ka papa māmā, ʻo ka nui o ka nui i hoʻohana ʻia ʻo 1250kg·m-3 a i ʻole 1050kg·m-3 (ma muli o ko lākou ikaika kiʻekiʻe)
ʻO nā ʻāpana pōhaku silica māmā ikaika kiʻekiʻe
Pilikia māmā māmā ikaika kiʻekiʻe (r=0.8):
①Kemeka haku mele: SiO2>91%;
②Volume density≤1.0g/cm3;
③Ka ikaika compressive ma ka lumi wela≥5MPa;
④0.2MPa haawe hooluolu ana wela: T0.6≥1600 ℃;
⑤ʻO ka'umekaumaha kikoʻī maoli: ≤2.38;
⑥Refractory> 1700 ℃.