Nā waiwai maikaʻi loa a me nā hoʻohana ʻana nā cenospheres: kiʻekiʻe ka refractoriness. ʻO nā ʻāpana kemika nui o nā cenospheres he mau ʻokikene o ka silicon a me ka alumini, nona ka silicon dioxide ma kahi o 50-65%, a ʻo ka alumini oxide ma kahi o 25-35%. No ka mea, ʻo ke kiko heheʻe o ka silica he 1725 degere Celsius, ʻo ke kiko heheʻe o ka alumini oxide he 2050 degere Celsius, ʻo ia mau mea ʻelua he kiʻekiʻe. nā mea paʻa ʻoleNo laila, he kiʻekiʻe loa ka refractoriness o nā cenospheres, ma ke ʻano laulā e hiki ana i ka 1600-1700 degere Celsius, e lilo ana lākou i mea refractory hana kiʻekiʻe maikaʻi loa. Māmā, insulation thermal. He lahilahi a hakahaka ka paia o nā cenospheres, a he semi-vacuum ka lua, me ka liʻiliʻi loa o ke kinoea (N2, H2 a me CO2, etc.), a lohi loa ka hoʻoili wela a liʻiliʻi loa. No laila, ʻaʻole wale nā cenospheres i ka māmā (bulk density 250-450 kg/m3), akā maikaʻi loa hoʻi i ka insulation thermal (thermal conductivity ma ka mahana o ka lumi 0.08-0.1), kahi e waiho ai i ke kahua no lākou e hōʻike i ko lākou mau talena ma ke kahua o nā mea insulation thermal māmā. Paʻakikī kiʻekiʻe a me ka ikaika. No ka mea, he mau kino aniani paʻakikī nā cenospheres i hoʻokumu ʻia e nā ʻāpana mineral silicon aluminum oxide (quartz a me mullite), hiki i ka paʻakikī ke hiki i ka pae Mohs 6-7, ʻo ka ikaika o ke kaomi static he 70-140MPa, a ʻo ka density maoli he 2.10-2.20 g/cm3. Hoʻohālikelike ʻia me ka pōhaku. No laila, he ikaika kiʻekiʻe ko nā cenospheres. Ma keʻano laulā, ʻo nā mea porous māmā a i ʻole nā mea hoʻopuehu e like me ka perlite, zeolite, diatomite, pumice, vermiculite i hoʻonui ʻia, a me nā mea ʻē aʻe he paʻakikī a ikaika ʻole, a ʻo nā huahana insulation thermal a i ʻole nā huahana refractory māmā i hana ʻia me lākou he mau hemahema ikaika ʻole. ʻO ko lākou mau hemahema nā pono o nā cenospheres, no laila he mau pono hoʻokūkū ko nā cenospheres a me nā hoʻohana ākea. ʻO ka nui o nā ʻāpana maikaʻi a me ka nui o ka ʻili kikoʻī. ʻO ka nui o nā ʻāpana o nā beads i hana maoli ʻia he 1-250 microns. ʻO ka ʻili kikoʻī he 300-360cm2/g, e like me ka sima. No laila, hiki ke hoʻohana pololei ʻia nā cenospheres me ka ʻole o ka wili ʻana. Hiki i ka fineness ke hoʻokō i nā pono o nā huahana like ʻole. ʻO nā mea hoʻomehana wela māmā ʻē aʻe he nui nā ʻāpana nui (e like me ka perlite, a pēlā aku). Inā wili ʻia lākou, e hoʻonui nui ʻia ka hiki, a e hoʻemi nui ʻia ka hoʻomehana wela. Ma kēia ʻano, he pono ko nā cenospheres. Hoʻomehana uila maikaʻi loa. ʻO nā Cenospheres, ma hope o ke koho ʻia ʻana o nā momi magnetic, he mau mea hoʻomehana maikaʻi loa a ʻaʻole alakaʻi. Ma ke ʻano laulā, emi ka pale ʻana o nā insulators me ka piʻi ʻana o ka mahana, akā piʻi ka pale ʻana o nā cenospheres me ka piʻi ʻana o ka mahana. ʻAʻole loaʻa kēia pono me nā mea hoʻomehana ʻē aʻe. No laila, hiki iā ia ke hana i nā huahana hoʻomehana ma lalo o nā kūlana wela kiʻekiʻe.
Ka manawa hoʻouna: ʻApelila-29-2022