Lub ntiaj teb diatomaceous yog ib hom pob zeb siliceous uas feem ntau muab faib rau hauv cov tebchaws xws li Tuam Tshoj, Tebchaws Meskas, Nyiv Pooj, Denmark, Fabkis, Romania, thiab lwm yam. Nws yog pob zeb sedimentary siliceous biogenic, feem ntau yog tsim los ntawm cov seem ntawm diatoms thaum ub.

Muaj me ntsis Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5, thiab cov organic matter. SiO2 feem ntau yog ntau tshaj 80%, nrog rau qhov siab tshaj plaws ntawm 94%. Cov hlau oxide ntsiab lus ntawm cov av diatomaceous zoo feem ntau yog 1-1.5%, thiab cov txhuas oxide ntsiab lus yog 3-6%. Cov khoom siv hauv diatomite feem ntau yog Opal thiab nws cov ntau yam, ua raws li cov av nplaum minerals hydromica, Kaolinite thiab cov mineral debris. Cov mineral debris suav nrog quartz, feldspar, Biotite thiab organic matter.

Lub ntiaj teb diatomaceous yog tsim los ntawm amorphous SiO2 thiab muaj me ntsis Fe2O3, CaO, MgO, Al2O3, thiab cov organic impurities. Lub ntiaj teb diatomaceous feem ntau yog daj daj lossis grey daj, mos, porous, thiab sib dua. Nws feem ntau siv rau hauv kev lag luam ua cov ntaub ntawv rwb thaiv tsev, cov ntaub ntawv lim dej, cov khoom sau, cov ntaub ntawv sib tsoo, cov ntaub ntawv raw iav dej, cov neeg sawv cev decolorizing, diatomaceous earth lim aids, catalyst carriers, thiab lwm yam.

Cov txiaj ntsig ntawm kev siv diatomaceous earth: pH nruab nrab, tsis muaj tshuaj lom, kev ua haujlwm zoo ntawm kev ncua, kev ua haujlwm adsorption muaj zog, lub teeb ntom ntom, tus nqi nqus roj ntawm 115%, qhov zoo ntawm 325 mesh txog 500 mesh, kev sib xyaw zoo, tsis muaj kev thaiv ntawm cov kav dej ua liaj ua teb thaum siv, tuaj yeem ua lub luag haujlwm noo noo hauv av, ua kom cov av zoo, ncua lub sijhawm ua chiv zoo, thiab txhawb kev loj hlob ntawm cov qoob loo. Kev lag luam chiv sib xyaw: Cov chiv sib xyaw rau ntau yam qoob loo xws li txiv hmab txiv ntoo, zaub, paj thiab nroj tsuag. Cov txiaj ntsig ntawm kev siv diatomaceous earth: diatomaceous earth yuav tsum tau siv ua cov khoom ntxiv hauv cement. Cov khoom ntxiv rau txheej diatomaceous earth muaj cov yam ntxwv ntawm porosity siab, nqus tau zoo, cov khoom siv tshuaj ruaj khov, tiv taus hnav, tiv taus kub, thiab lwm yam. Lawv tuaj yeem muab kev ua tau zoo ntawm qhov chaw, sib xws, tuab, thiab txhim kho kev nplaum rau cov txheej. Vim nws qhov loj ntawm qhov hws, nws tuaj yeem ua rau lub sijhawm qhuav ntawm cov txheej luv luv. Nws kuj tseem tuaj yeem txo cov resin siv thiab txo cov nqi. Cov khoom no suav hais tias yog cov khoom siv pleev xim zoo nrog kev siv nyiaj zoo, thiab tau raug xaiv los ua cov khoom los ntawm ntau lub tuam txhab tsim khoom txheej txheem thoob ntiaj teb loj, siv dav hauv cov av diatomaceous uas muaj dej.