Diatomaceous ụwa bụ ụdị siliceous nkume tumadi kesara na mba ndị dị ka China, United States, Japan, Denmark, France, Romania, wdg Ọ bụ a biogenic siliceous sedimentary nkume tumadi esịnede foduru nke oge ochie diatoms.Ihe mejupụtara kemịkalụ ya bụ SiO2, nke nwere ike ịnọchite anya SiO2 · nH2O, yana ihe mejupụtara ya bụ opal na ụdị ya.Ihe nchekwa nke ụwa diatomaceous na China bụ nde tọn 320, yana ihe nchekwa ihe karịrị ijeri ijeri abụọ, gbadoro anya na East China na Northeast China.N'ime ha, Jilin (54.8%, ya na Linjiang City na Jilin Province na-aza ajụjụ maka ihe nchekwa mbụ egosipụtara na Eshia), Zhejiang, Yunnan, Shandong, Sichuan na ógbè ndị ọzọ nwere nkesa sara mbara, mana ala dị elu ka etinyere naanị na mpaghara. Mpaghara Changbai Mountain nke Jilin, yana ọtụtụ ebe nchekwa ịnweta ịnweta bụ ọkwa ọkwa 3-4.N'ihi ọdịnaya adịghị ọcha dị elu, enweghị ike ịhazi ya ma jiri ya rụọ ọrụ ozugbo.Akụkụ bụ isi nke ụwa diatomaceous dị ka onye na-ebu bụ SiO2.Dịka ọmụmaatụ, akụkụ na-arụ ọrụ nke vanadium catalyst bụ V2O5, co catalyst bụ alkali metal sulfate, na onye na-ebu ya na-anụchacha ụwa diatomaceous.Nnwale egosiwo na SiO2 nwere mmetụta na-adịgide adịgide na ihe ndị na-arụ ọrụ ma na-abawanye na mmụba nke K2O ma ọ bụ Na2O.Ọrụ nke onye na-emepụta ihe na-ejikọta ya na mgbasa na nhazi pore nke onye na-ebu ya.Mgbe ọgwụgwọ acid nke ụwa diatomaceous gasịrị, ọdịnaya nke adịghị ọcha oxide na-ebelata, ọdịnaya nke SiO2 na-abawanye, na mpaghara elu kpọmkwem na oke pore na-abawanye.Ya mere, mmetụta na-ebu nke ụwa diatomaceous a nụchara anụcha dị mma karịa nke ụwa diatomaceous eke.

A na-etolite ụwa Diatomaceous site na silicate foduru mgbe ọ nwụsịrị algae nwere otu cell, nke a na-akpọkarị diatoms, na isi ya bụ amorphous SiO2.Diatoms nwere ike ịdị ndụ na mmiri dị ọcha na mmiri nnu, nwere ọtụtụ ụdị.Enwere ike kewaa ha n'usoro n'usoro dị n'etiti diatoms na "usoro feathered" diatoms, usoro nke ọ bụla nwere ọtụtụ "ọgbọ" ndị dị mgbagwoju anya.

Akụkụ bụ isi nke ụwa diatomaceous eke bụ SiO2, nke nwere ndị dị elu nwere agba ọcha yana ọdịnaya SiO2 na-adịkarị karịa 70%.Otu diatoms enweghị agba na nghọta, na agba nke ụwa diatomaceous dabere na mineral ụrọ na ihe ndị dị ndụ.Ngwakọta nke ụwa diatomaceous sitere na isi mmalite ịnweta dị iche iche dị iche iche.

Ụwa Diatomaceous, nke a makwaara dị ka diatom, bụ nkwụnye ego diatom nke emebere mgbe otu osisi nwụsịrị na oge ntinye nke ihe dịka 10000 ruo 20000 afọ.Diatom bụ otu n'ime ihe ndị dị ndụ mbụ pụtara n'ụwa, na-ebi na mmiri oke osimiri ma ọ bụ ọdọ mmiri.

Ụdị ụwa diatomaceous a na-etolite site na ntinye nke ihe fọdụrụ nke osisi diatoms mmiri nwere otu cell.Ọrụ pụrụ iche nke diatom a bụ na ọ nwere ike ịmịnye silicon n'efu na mmiri iji mepụta ọkpụkpụ ya.Mgbe ndụ ya kwụsịrị, ọ na-edobe ma na-emepụta ebe nchekwa ụwa diatomaceous n'okpuru ụfọdụ ọnọdụ ala.O nwere ụfọdụ ihe pụrụ iche, dị ka porosity, obere itinye uche, nnukwu ebe elu akọwapụtara, enweghị ike ikwu okwu, na nkwụsi ike kemịkal.Mgbe na-agbanwe urughuru size nkesa na elu Njirimara nke mbụ ala site procUsoro nhazi dị ka ngwepịa, nhazi, calcination, nhazi ọkwa ikuku, na iwepụ adịghị ọcha, ọ nwere ike dabara maka ụlọ ọrụ mmepụta ihe dị iche iche dị ka mkpuchi na ihe mgbakwunye agba.