Dhulka Diatomaceous waa nooc ka mid ah dhagaxa siliceous ah oo inta badan loo qaybiyo wadamada sida Shiinaha, Maraykanka, Japan, Denmark, France, Romania, iwm.Halabuurka kiimikaad ee ay ka kooban tahay inta badan waa SiO2, oo ay mateli karto SiO2 · nH2O, macdanteedana waa opal iyo noocyadeeda.Kaydka dhulka diatomaceous ee Shiinaha waa 320 milyan oo tan, oo leh kayd la filayo in ka badan 2 bilyan oo tan, oo inta badan ku urursan Bariga Shiinaha iyo Waqooyi Bari Shiinaha.Waxaa ka mid ah, Jilin (54.8%, iyadoo magaalada Linjiang ee Gobolka Jilin ay ku xisaabtamayso kaydadkii ugu horreeyay ee Aasiya), Zhejiang, Yunnan, Shandong, Sichuan, iyo gobollada kale waxay leeyihiin qaybin ballaaran, laakiin ciidda tayada sare leh waxay ku urursan tahay oo keliya Buurta Changbai ee Jilin, iyo inta badan kaydadka macdanta kale waa ciidda fasalka 3-4.Sababtoo ah nuxurka wasakhda sare leh, si toos ah looma farsamayn karo oo lagama faa'iidaysan karo.Qaybta ugu muhiimsan ee dhulka diatomaceous sida side ahaan waa SiO2.Tusaale ahaan, qaybta firfircoon ee kicinta vanadium warshadaha waa V2O5, kicinta co-kaliya waa sulfate birta alkali, iyo sidayaal waa la safeeyey dhulka diatomaceous.Tijaabooyinku waxay muujiyeen in SiO2 ay saameyn dejineed ku leedahay qaybaha firfircoon waxayna kordhisaa korodhka K2O ama Na2O.Hawsha kicinta ayaa sidoo kale la xiriirta kala firdhisanaanta iyo qaab dhismeedka daloolka sidaha.Ka dib daaweynta aashitada ee dhulka diatomaceous, maadada wasakhda oksaydhka ayaa hoos u dhacda, waxa ku jira SiO2 ayaa kor u kaca, aagga dusha gaarka ah iyo mugga daloolka ayaa sidoo kale kordha.Sidaa darteed, saamaynta sidaha dhulka diatomaceous ee la safeeyey ayaa ka fiican kan dhulka diatomaceous ee dabiiciga ah.

Dhulka diatomaceous guud ahaan waxa uu ka samaysan yahay hadhaagii silicate ka dib dhimashadii algae hal unug ah, oo loo yaqaan diatoms, nuxurkeeduna waa amorphous SiO2.Diatoms waxay ku noolaan karaan biyaha macaan iyo biyaha cusbada labadaba, oo leh noocyo badan.Guud ahaan waxa loo qaybin karaa “dalabka dhexe” diatoms iyo “ order baalal leh” diatoms, amar kastaa waxa uu leeyahay “genera” badan oo aad u adag.

Qaybta ugu muhiimsan ee dhulka diatomaceous dabiiciga ah waa SiO2, oo leh kuwa tayo sare leh oo leh midab cad iyo maadada SiO2 oo inta badan ka badan 70%.Diatomasyada kelida ahi waa kuwo aan midab lahayn oo hufan, midabka dhulka diatomaceous-kuna wuxuu ku xiran yahay macdanta dhoobada iyo walxaha dabiiciga ah.Halabuurka dhulka diatomaceous ee ilaha macdanta ee kala duwan ayaa kala duwan.

Dhulka Diatomaceous, oo sidoo kale loo yaqaano diatom, waa kaydka diatom ee fossilized ee la sameeyay ka dib dhimashadii warshad unug ah iyo muddo dhigasho ah oo ku saabsan 10000 ilaa 20000 sano.Diatoms waxay ahaayeen mid ka mid ah noolaha ugu horreeya ee u dhashay ee ka soo muuqda Dhulka, kuwaas oo ku nool biyaha badda ama harada.

Noocan ah dhulka diatomaceous waxa uu ka samaysan yahay meel dhigista hadhaagii dhirta biyaha ee hal unug ka kooban.Waxqabadka gaarka ah ee diatomkani waa in uu ku nuugi karo silikoon bilaash ah biyaha si uu u sameeyo lafihiisa.Marka ay nolosheeda dhammaato, waxa ay dhigataa oo samaysaa kaydka dhulka diatomaceous ee xaaladaha juqraafiyeed qaarkood.Waxay leedahay qaar ka mid ah sifooyin gaar ah, sida porosity, feejignaan hoose, meel sare oo gaar ah oo weyn, qaraabo la'aanta, iyo xasiloonida kiimikada.Ka dib markii la beddelo qaybinta cabbirka walxaha iyo sifooyinka dusha sare ee ciidda asalka ah iyada oo loo marayo procHababka kala-soocidda sida burburinta, kala-soocidda, kala-soocidda, kala-soocidda qulqulka hawada, iyo ka-saaridda wasakhda, waxay ku habboonaan kartaa shuruudaha warshadaha kala duwan sida dahaarka iyo rinjiga lagu daro.