I-Diatomaceous earth luhlobo lwelitye le-siliceous elisasazwa kakhulu kumazwe afana neTshayina, i-United States, iJapan, iDenmark, iFransi, iRomania, njl. Lilitye le-siliceous sedimentary elenziwe kakhulu ziintsalela zee-diatom zamandulo. Ukwakheka kwalo kweekhemikhali ikakhulu yiSiO2, enokumelwa yiSiO2 · nH2O, kwaye ukwakheka kwalo kwezimbiwa yi-opal kunye neendidi zalo. Ukugcinwa komhlaba we-diatomaceous eTshayina yi-320 yezigidi zeetoni, kunye nokugcinwa okunokwenzeka kwe-2 yeebhiliyoni zeetoni, ikakhulu kugxilwe eMpuma China naseMantla-mpuma China. Phakathi kwazo, iJilin (54.8%, kunye neLinjiang City kwiPhondo laseJilin ebala iindawo zokuqala eziqinisekisiweyo eAsia), iZhejiang, iYunnan, iShandong, iSichuan, kunye namanye amaphondo anokusasazwa ngokubanzi, kodwa umhlaba osemgangathweni ophezulu ugxilwe kuphela kwindawo yeNtaba yaseChangbai eJilin, kwaye uninzi lwezinye iidipozithi zezimbiwa ngumhlaba webanga lesi-3-4. Ngenxa yobuninzi bokungcola, awunakucutshungulwa kwaye usetyenziswe ngokuthe ngqo. Icandelo eliphambili lomhlaba we-diatomaceous njengomthwali yiSiO2. Umzekelo, icandelo elisebenzayo le-industrial vanadium catalyst yi-V2O5, i-co catalyst yi-alkali metal sulfate, kwaye i-carrier yi-dilatomaceous earth ecociweyo. Uvavanyo lubonise ukuba i-SiO2 inefuthe lokuzinzisa kwi-active components kwaye iyanda ngokwanda komxholo we-K2O okanye we-Na2O. Umsebenzi we-catalyst ukwanxulumene nolwakhiwo lwe-dispersion kunye ne-pore ye-carrier. Emva konyango lwe-asidi ye-diatomaceous earth, umxholo wokungcola kwe-oxide uyancipha, umxholo we-SiO2 uyanda, kwaye indawo ethile yomphezulu kunye nomthamo we-pore nawo uyanda. Ke ngoko, isiphumo se-carrier se-dilatomaceous earth ecociweyo singcono kuneso se-diatomaceous earth yendalo.

I-Diatomaceous earth ngokuqhelekileyo yenziwa ngeentsalela ze-silicate emva kokufa kwe-algae eneseli enye, eyaziwa ngokuba yi-diatoms, kwaye isiseko sayo yi-aqueous amorphous SiO2. Ii-Diatoms zinokuphila emanzini acocekileyo nasemanzini anetyuwa, ngeentlobo ezininzi. Ngokuqhelekileyo zinokwahlulwa zibe zii-diatoms "ze-central order" kunye nee-diatoms "ze-feathered order", kwaye i-order nganye ine-"genera" ezininzi ezintsonkothileyo.

Eyona nto iphambili emhlabeni we-diatomaceous yendalo yiSiO2, apho ezo zisemgangathweni ophezulu zinombala omhlophe kwaye umxholo weSiO2 uhlala udlula i-70%. Ii-diatoms ezingatshatanga azinambala kwaye zicacile, kwaye umbala womhlaba we-diatomaceous uxhomekeke kwiiminerali zodongwe kunye nezinto eziphilayo. Ukwakheka komhlaba we-diatomaceous ovela kwimithombo eyahlukeneyo yeeminerali kuyahluka.

I-Diatomaceous earth, eyaziwa ngokuba yi-diatom, yi-fossilized diatom deposit eyenziwe emva kokufa kwesityalo esinye esineseli kwaye ixesha lokuyibeka limalunga neminyaka eyi-10000 ukuya kwi-20000. Ii-Diatom zaziphakathi kwezinto eziphilayo zokuqala ukuvela eMhlabeni, zihlala emanzini olwandle okanye emanzini echibi.

Olu hlobo lomhlaba we-diatomaceous lwenziwa ngokubeka iintsalela ze-diatoms zezityalo zasemanzini ezineseli enye. Ukusebenza okungaqhelekanga kwale diatom kukuba inokufunxa i-silicon ekhululekileyo emanzini ukuze yenze amathambo ayo. Xa ubomi bayo buphela, ibeka kwaye yenze ii-diatomaceous earth deposits phantsi kweemeko ezithile zejoloji. Ineempawu ezithile ezikhethekileyo, ezinje nge-porosity, uxinzelelo oluphantsi, indawo enkulu yomphezulu othile, ukungacinezeleki okulinganiselweyo, kunye nokuzinza kweekhemikhali. Emva kokutshintsha usasazo lobungakanani beesuntswana kunye neempawu zomphezulu womhlaba wokuqala ngokusebenzisa inkquboiinkqubo zokuhlola ezifana nokutyumza, ukuhlunga, ukucola, ukwahlulahlula umoya, kunye nokususa ukungcola, ingafaneleka kwiimfuno ezahlukeneyo zoshishino ezifana neengubo kunye nezongezo zepeyinti.