ʻO ka bead lana he ʻano pōpō hakahaka lehu lele e hiki ke lana ma luna o ka ʻili wai. He hina keʻokeʻo, lahilahi a hakahaka i loko o ka paia, māmā loa ke kaumaha, me ke kaumaha o ka ʻāpana he 720kg/m3 (kaumaha) a me 418.8kg/m3 (māmā), ʻo ka nui o ka ʻāpana ma kahi o 0.1mm, pani a laumania i ka ʻili, liʻiliʻi i ka conductivity thermal, a me ke kūpaʻa ahi ≥ 1610 ℃. He mea pale wela maikaʻi loa ia, hoʻohana nui ʻia i ka hana ʻana i nā mea hoʻoheheʻe māmā a me ka ʻeli ʻaila. ʻO ka hoʻohui kemika o ka bead lana he silicon dioxide a me ka alumini oxide. He nui kona mau ʻano, e like me nā ʻāpana liʻiliʻi, hakahaka, māmā, ikaika kiʻekiʻe, kūpaʻa ʻaʻahu, kūpaʻa wela kiʻekiʻe, insulation thermal, insulation a me ka pale lapalapa. ʻO ia kekahi o nā mea maka i hoʻohana nui ʻia i ka ʻoihana pale ahi.

Hoʻolauna

Hana maikaʻi loa a me ka hoʻopili ʻana o nā momi lana

Kū'ē ahi kiʻekiʻe. ʻO nā ʻāpana kemika nui o ka bead lana he silicon a me nā oxides alumini, nona ka silicon dioxide ma kahi o 48-66% a ʻo ka alumini oxide ma kahi o 26-36%. No ka mea, ʻo ke kiko heheʻe o ka silicon dioxide he 1720 ℃ a ʻo ka alumini oxide he 2060 ℃, he mau refractories kiʻekiʻe lāua ʻelua. No laila, he kū'ē ahi kiʻekiʻe loa ka bead lana, kahi e hiki ai i ka 1620-1800 ℃, e lilo ia i refractory hana kiʻekiʻe maikaʻi loa. Māmā ke kaumaha, insulation thermal. He lahilahi a hakahaka ka paia o ka bead lana, a he semi vacuum ka lua. He liʻiliʻi wale nō ka nui o ke kinoea (N2, H2, CO2, etc.), a lohi loa ka hoʻoili wela. No laila, ʻaʻole wale nā ​​​​beads lana i māmā (250-450 kg/m3). ʻO ka nui o nā ʻāpana kūlohelohe o nā beads lana he 1-250 microns. Hiki ke hoʻohana pololei ʻia nā beads drift 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 ka nui o nā ʻāpana (e like me ka perlite). Inā wili ʻia lākou, e hoʻonui nui ʻia ka hiki, a e hoʻemi nui ʻia ka hoʻomehana wela. Ma kēia ʻano, loaʻa i nā beads Drifting nā pono. Hoʻomehana uila maikaʻi loa. ʻO ka bead lana ma hope o ke koho ʻia ʻana o ka bead magnetic he mea hoʻomehana me ka hana maikaʻi loa a ʻaʻole ia e alakaʻi i ka uila. Ma ke ʻano laulā, emi ka pale ʻana o nā insulators me ka piʻi ʻana o ka mahana, ʻoiai ʻo ka piʻi ʻana o nā beads lana me ka piʻi ʻana o ka mahana. ʻAʻole loaʻa kēia pono i nā mea hoʻomehana ʻē aʻe. No laila, hiki ke hoʻohana ʻia e hana i nā huahana hoʻomehana ma lalo o nā kūlana wela kiʻekiʻe.