Ke one ʻāpana corundum keʻokeʻo

E pili ana i nā huahana corundum keʻokeʻo me ka nui o nā ʻāpana mai 0-1mm, 1-3mm, 3-5mm, 5-8mm, 100 # - 0, 200 # - 0, a me 320 # - 0. ʻO ka nui o ka corundum keʻokeʻo kiʻekiʻe. lawe ʻia e ka hale hana hoʻoheheʻe ʻia i ka ʻāpana hana hana one, ʻoki ʻia e ka mea hoʻoheheʻe koʻikoʻi, a laila kānana ʻia no ka loaʻa ʻana o kahi huahana corundum keʻokeʻo me ka nui o nā ʻāpana i loko o kahi ākea.Hoʻohana nui ʻia e like me ke ʻano refractory, amorphous refractory, a me nā noi lepo lepo.