Bauxite

ʻO ka Bauxite (bauxite ore) e pili ana i kahi huaʻōlelo hui no nā minerale hiki ke hoʻohana ʻia i ka ʻoihana, ka mea nui i haku ʻia me ka gibbsite, boehmite, a i ʻole diaspore.

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ʻO ka Bauxite (bauxite ore) e pili ana i kahi huaʻōlelo hui no nā minerale hiki ke hoʻohana ʻia i ka ʻoihana, ka mea nui i haku ʻia me ka gibbsite, boehmite, a i ʻole diaspore. He punawai hiki ʻole ke hoʻololi ʻia. He keʻokeʻo ka bauxite maʻemaʻe a hiki ke ʻike ʻia ka hina hina, ʻōmaʻomaʻo ʻōmaʻomaʻo, a i ʻole ʻulaʻula ma muli o nā haumia like ʻole. Loaʻa i ka Bauxite ka nui o nā noi ʻoihana. Ma ka lima hoʻokahi, ʻo ia ka mea kumu nui no ka hana ʻana i ka alumina, ka mea e hana ai i ka alumini. Ma ka ʻaoʻao ʻē aʻe, hoʻohana nui ʻia ia ma ke ʻano he mea maka i nā ʻoihana e like me nā mea refractory, fused corundum, nā mea wili, nā huahana seramika, nā huahana kemika, a me ka slurry alumina kiʻekiʻe.

Calcined bauxite contains hydrated alumina and aluminum hydroxide, obtained by calcining high-quality bauxite at high temperatures (85°C to 1600°C) in a rotary kiln. It is one of the main raw materials for producing aluminum. Compared with the original bauxite, after removing moisture through calcination, the alumina content of the calcined bauxite can be increased from about 57% to 58% of the original bauxite to 84% to 88%.

Nā Hōʻike Huahana

Bauxite	Nui (mm)	Al2O3(%)	SiO2(%)	Kiʻekiʻe(%)	Fe2O3(%)	MC(%)
88	0-1,1-3,3-5	＞88	<9	<0.2	<3	<2
85	0-1,1-3,3-5	＞85	<7	<0.2	<2.5	<2

Nā noi

ʻOihana Alumini: loaʻa i ka bauxite ka waihona alumini kiʻekiʻe a he mea waiwai nui ia no ka ʻoihana hoʻoheheʻe alumini;
2. Hoʻoheheʻe pololei: hiki ke hana ʻia ka bauxite i nā ʻano like ʻole o ka hoʻoheheʻe ʻana ma hope o ka hana ʻana, hoʻohana nui ʻia i ka kamaʻilio, nā mea kani, nā mīkini a me nā ʻoihana;
3. Refractory mea: bauxite loaʻa nā waiwai maikaʻi e like me ka hoʻonui haʻahaʻa wela, ka refractoriness kiʻekiʻe, a me ka paʻa o ka leo wela kiʻekiʻe, e lilo ia i mea maʻamau no nā mea refractory. Hoʻohana nui ʻia nā mea refractory i hana ʻia i ke kila, non-ferrous metallurgy, petroleum, kemika a me nā ʻoihana ʻoihana ʻē aʻe.
4. Nā mea hana hale: hiki i ka pauka bauxite ke hoʻomaikaʻi i ka ikaika a me ka paʻakikī o nā mea e like me ka cement, mortar, a me ka paʻakai, me ka hoʻonui ʻana i ko lākou kūpaʻa a me ka pale ʻana i ka corrosion.