ʻElua mau ʻano mea maka no ka hana alumina hoʻāla ʻia, ʻo ka "pauma wikiwiki" i hana ʻia e trialumina a i ʻole pōhaku Bayer, a ʻo kekahi i hana ʻia e ka aluminate a i ʻole ka paʻakai alumini a i ʻole nā mea ʻelua i ka manawa like.
X,ρ-alumina a me ka hana ana o X,ρ-alumina
ʻO X, ρ-alumina ka mea maka nui no ka hana ʻana i nā pōpō alumina i hoʻāla ʻia, a i ʻole FCA no ka pōkole. Ma Kina, ua kapa ʻia ʻo ia "ka pauka hoʻokuʻu wikiwiki" no ka pauka alumina i hana ʻia e ke ʻano dehydration wikiwiki.
Ua ʻike ʻia ʻo X,ρ-alumina i ka makahiki 1950 a ua hōʻoia ʻia e ka ASTM ma 1960. I nā makahiki 1970, x a me ʻEulopa. ʻO ke kī o ka ʻenehana X, ρ -alumina ʻo ia ka dehydration wikiwiki, maʻamau i loko o kahi reactor moena i hoʻoheheʻe ʻia, kahi e hoʻomalu ʻia ai ka mahana moe e ke kinoea puhi a i ʻole ka wai. I ka makahiki 1975-1980, ua hoʻomohala maikaʻi ʻo Tianjin Institute of Chemical Industry i ka hoʻokuʻu ʻana i ka hoʻomehana ʻana i ka ʻenehana hana wikiwiki me nā ʻano o ka ʻenehana Kina. Ua hoʻohana i ka cone reactor, hoʻohui i ka maloʻo a me ka ʻūhā alumini hydroxide, a hana i ka hui ʻana o X-alumina a me ρ-alumina ma ka ʻala ʻana i ka 0.1 ~ 10s i ka umu hoʻoheheʻe wikiwiki.
Ka manawa hoʻouna: Apr-01-2023
