ʻO ka honua diatomaceous kahi ʻano pōhaku siliceous i hoʻolaha nui ʻia ma nā ʻāina e like me Kina, ʻAmelika Hui Pū ʻIa, Iapana, Denemaka, Farani, Romania, a me nā mea ʻē aʻe.ʻO SiO2 ka nui o kāna mea hana kemika, hiki ke hōʻike ʻia e SiO2 · nH2O, a ʻo kona ʻano mineral he opal a me nā ʻano like ʻole.ʻO ka mālama ʻana o ka honua diatomaceous ma Kina he 320 miliona mau tons, me kahi mālama ʻia ʻoi aku ma mua o 2 biliona tons, ka mea nui ma Kina Hikina a me Kina Hikina Hikina.Ma waena o lākou, ʻo Jilin (54.8%, me ke kūlanakauhale ʻo Linjiang ma Jilin Province e helu ana i nā mea mālama mua i hōʻoia ʻia ma Asia), ʻo Zhejiang, Yunnan, Shandong, Sichuan, a me nā panalāʻau ʻē aʻe he ākea ākea, akā ʻo ka lepo kiʻekiʻe ka nui o ka lepo. ʻO ka ʻāina mauna ʻo Changbai o Jilin, a ʻo ka hapa nui o nā waihona mineral ʻē aʻe he papa 3-4 lepo.Ma muli o ka maʻiʻo haumia kiʻekiʻe, ʻaʻole hiki ke hana pololei a hoʻohana ʻia.ʻO ka mea nui o ka honua diatomaceous ma ke ʻano he mea lawe ʻo SiO2.No ka la'ana, 'o V2O5 ka mea hana o ka vanadium catalyst, 'o ka co-catalyst he alkali metala sulfate, a 'o ka mea lawe i ho'oma'ema'e 'ia ka honua diatomaceous.Ua hōʻike ʻia nā hoʻokolohua e loaʻa i ka SiO2 ka hopena stabilizing i nā mea hana a hoʻonui ʻia me ka hoʻonui ʻana o ka waihona K2O a i ʻole Na2O.ʻO ka hana a ka catalyst e pili pū ana me ka dispersion a me ka hoʻolālā pore o ka mea lawe.Ma hope o ka hoʻomaʻamaʻa ʻana i ka waika o ka honua diatomaceous, e emi ana ka ʻike o nā mea haumia oxide, hoʻonui ka ʻike o SiO2, a hoʻonui pū ka ʻāpana kikoʻī a me ka nui o ka pore.No laila, ʻoi aku ka maikaʻi o ka hopena lawe o ka honua diatomaceous i hoʻomaʻemaʻe ʻia ma mua o ka honua diatomaceous maoli.

Hoʻokumu ʻia ka honua diatomaceous mai ke koena silicate ma hope o ka make ʻana o nā algae-celled hoʻokahi, i ʻike mau ʻia ʻo diatoms, a ʻo kona ʻano he wai amorphous SiO2.Hiki i nā diatoms ke ola i loko o ka wai hou a me ka wai paʻakai, me nā ʻano he nui.Hiki ke hoʻokaʻawale ʻia lākou i nā diatoms "kauoha waena" a me nā diatoms "kauoha hulu", a he nui nā "genera" i kēlā me kēia kauoha.

ʻO ka mea nui o ka honua diatomaceous maoli ʻo SiO2, me nā kiʻekiʻe kiʻekiʻe me ke kala keʻokeʻo a me ka ʻike SiO2 pinepine ma mua o 70%.ʻAʻole waihoʻoluʻu a ʻālohilohi nā diatoms hoʻokahi, a ʻo ka waihoʻoluʻu o ka honua diatomaceous e pili ana i nā minelala pālolo a me nā mea kūlohelohe.ʻOkoʻa ke ʻano o ka honua diatomaceous mai nā kumu mineral like ʻole.

ʻO ka honua diatomaceous, ʻike ʻia hoʻi ʻo diatom, kahi waihona diatom fossilized i hana ʻia ma hope o ka make ʻana o kahi mea kanu celled hoʻokahi a me kahi manawa waiho ʻana ma kahi o 10000 a 20000 mau makahiki.ʻO Diatoms kekahi o nā mea ola mua loa i ʻike ʻia ma ka Honua, e noho ana i loko o ke kai a i ʻole ka wai loko.

Hoʻokumu ʻia kēia ʻano honua diatomaceous e ka waiho ʻana o nā koena o nā diatoms mea kanu wai hoʻokahi-celled.ʻO ka hana kūʻokoʻa o kēia diatom, ʻo ia ka hiki ke hoʻopaʻa i ke silika manuahi i ka wai e hana i kona mau iwi.I ka pau ʻana o kona ola, waiho ʻo ia a hoʻokumu i nā waiho honua diatomaceous ma lalo o kekahi mau kūlana honua.Loaʻa iā ia kekahi mau waiwai kūʻokoʻa, e like me ka porosity, ka haʻahaʻa haʻahaʻa, ka nui kikoʻī kikoʻī kikoʻī, pili incompressibility, a me ka paʻa kemika.Ma hope o ka hoʻololi ʻana i ka hāʻawi ʻana i ka nui o ka ʻāpana a me nā waiwai ili o ka lepo kumu ma o procʻO nā kaʻina hana e like me ka ʻoki ʻana, ka hoʻokaʻawale ʻana, ka calcination, ka hoʻokaʻawale ʻana o ka ea, a me ka wehe ʻana i ka haumia, hiki ke kūpono i nā koi ʻoihana like ʻole e like me nā uhi a me nā mea hoʻohui pena.