Ka lā i kau ai:22,Mei,2023

Ke hana nei kekahi mau mea hana i ka ʻoihana i ka mahana o 900 ° C no ka manawa lōʻihi. He paʻakikī ka mea paʻakikī e hiki i ke kūlana o ka sintering seramika i kēia mahana, e hoʻopilikia nui i ka hana o nā mea refractory; ʻO nā pono oka sodium hexametaphosphate i loko o ka refractory castable a me ka hoʻopiha ʻana i ka hoʻopiha ʻana he paʻa a maikaʻi ka ikaika compressive a me ke kūpaʻa ʻana a me ke kūpaʻa haʻalulu wela. Kōkua ia i ka hoʻoikaika ʻana i ke ʻano o ka hoʻopaʻa ʻana o nā mea refractory, a hiki ke hana i ka pauka a i ʻole granular refractory mea paʻa e hōʻike i ka ikaika.

I ka wā lōʻihi o ka hoʻomohala ʻana o nā mea hoʻopulapula, e lawe ana i ka boiler ma ke ʻano he laʻana, ma muli o ka wikiwiki o ka hoʻoheheʻe ʻana o nā mea puhi ahi, ʻoi aku ka ikaika o ka wela kiʻekiʻe a me ka hopena o ka hopena i nā mea refractory lining. a me nā ʻāpana ʻē aʻe ma lalo o ka ʻaʻahu a me ka hopena haʻalulu wela o nā ʻāpana, ka ea a me ka lepo lepo, ka hopena i ka ʻino, ʻaʻahu, ʻili a me ka hāʻule ʻana o ka uhi o ka refractory. mea waiwai. Hoʻopilikia nui ia i ka hana maʻamau a me ka hana ʻana o ka paila.

No laila, pono e hoʻomohala i nā mea hoʻopili hou me ke kiʻekiʻe kiʻekiʻe o ka wela, ka corrosion resistance, ka ʻaʻahu a me ke kūpaʻa haʻalulu wela e hoʻomaikaʻi i ka hana o nā mea refractory.

ʻO ka sodium hexametaphosphate Loaʻa iā ia nā mea maikaʻi i ka refractory castable a me ka hoʻopiha piha ʻana. Ma o ke koho ʻana i ka lākiō haku mele a me nā ʻāpana kaʻina hana hoʻomākaukau, ʻo ka mea hoʻopili he ʻōnaehana hoʻoheheʻe kūʻokoʻa kūʻokoʻa, ʻaʻole wale ka ikaika adhesion a ʻaʻohe corrosion i ka matrix metala, akā loaʻa nō hoʻi kahi ākea o ka wela noi o ke kiʻekiʻe wela kūpaʻa inorganic binder.

ʻO ka sodium hexametaphosphateua hydrolyzed i ka sodium dihydrogen phosphate (NaH2PO4) ke hoʻohana ʻia ʻo ia i mea hoʻopaʻa i loko o nā pahu pahu refractory a me nā ʻōpala. NaH2PO4 a me ka honua alkaline metala oxides e like me ka magnesia ua mākaukau e hui, hiki ke hana ma ka lumi wela e hana i ka Mg(H2PO4)2. Hoʻomaloʻo koke ʻia ʻo Mg(H2PO4)2 a lilo i [Mg(PO3)2]n a me [Mg2(P2O7)]n, kahi e hoʻonui ai i ka ikaika o ka paʻakikī a hāʻawi i ka ikaika nui ma luna o kahi ākea o nā wela (a hiki i 800° C) ma mua o ka hiki ʻana mai o ka pae wai.

ʻO nā mea refractory nā mea kumu nui o ka hao a me ke kila, nā mea kūkulu hale, nā metala non-ferrous, petrochemical, mīkini, mana uila, mālama kaiapuni a me nā ʻoihana wela kiʻekiʻe. ʻO ka paʻa Sodium hempetaphosphate he mea pono loa ia no nā ʻano mea wela wela a me nā mea hana.