nkhani

Chigawo chachikulu cha diatomite monga chonyamulira ndi SiO2. Mwachitsanzo, chigawo chogwira ntchito cha mafakitale vanadium chothandizira ndi V2O5, cocatalyst ndi alkali zitsulo sulfate, ndipo chonyamulira ndi woyengedwa diatomite. Zotsatira zimasonyeza kuti SiO2 imakhala ndi mphamvu yokhazikika pazigawo zogwira ntchito, ndipo imawonjezeka ndi kuwonjezeka kwa K2O kapena Na2O. Ntchito ya chothandizira imakhudzananso ndi kufalikira kwa chithandizo ndi mapangidwe a pore. Pambuyo pochiza diatomite ndi asidi, zonyansa za oxide zimachepa, zokhutira za SiO2 zimawonjezeka, malo enieni komanso kuchuluka kwa pore kumawonjezeka, kotero kuti chonyamulira cha diatomite choyengedwa ndi chabwino kuposa cha diatomite yachibadwa.

Diatomite nthawi zambiri imapangidwa kuchokera ku zotsalira za silicates pambuyo pa imfa ya algae yokhala ndi selo imodzi, yomwe imatchedwa diatoms, ndipo imakhala ndi hydrated amorphous SiO2. Ma Diatom amatha kukhala m'madzi abwino komanso amchere. Pali mitundu yambiri ya ma diatoms, omwe amatha kugawidwa kukhala "middle mind" diatoms ndi "feather striata" diatoms. Mu dongosolo lililonse, pali "genera" ambiri, omwe ndi ovuta kwambiri.

Chigawo chachikulu cha diatomite zachilengedwe ndi SiO2. Diatomite yapamwamba kwambiri ndi yoyera, ndipo zomwe zili mu SiO2 nthawi zambiri zimaposa 70%. Ma diatoms amodzi ndi opanda utoto komanso owoneka bwino, ndipo mtundu wa diatomite umadalira mchere wadongo ndi zinthu zakuthupi, ndi zina zambiri, ndipo mapangidwe a diatoms ochokera kumadera osiyanasiyana amchere ndi osiyana.

Diatomite ndi chosungiramo zinthu zakale cha diatomite chomwe chinapangidwa pambuyo pa nthawi yowunjika pafupifupi zaka 10,000 mpaka 20,000 pambuyo pa imfa ya zomera za cell imodzi yotchedwa diatoms. Ma Diatom ali m'gulu la protozoa woyamba kuwoneka pa Dziko Lapansi, akukhala m'madzi a m'nyanja ndi m'nyanja. Ndi diatomu iyi, yomwe imapereka mpweya kudziko lapansi kudzera mu photosynthesis, yomwe imachititsa kubadwa kwa anthu ndi zinyama ndi zomera.

Mtundu uwu wa diatomite umapangidwa ndi kusungidwa kwa zotsalira za chomera cham'madzi chokhala ndi celled imodzi diatomite. Katundu wapadera wa diatomite ndikuti amatha kuyamwa silicon yaulere m'madzi kuti apange mafupa ake. Moyo wake ukatha, imatha kusungitsa ndi kupanga diatomite deposit pansi pamikhalidwe ina ya geological. Iwo ali ena katundu wapadera, monga porosity, otsika ndende, ikuluikulu enieni pamwamba m'dera, incompressibility wachibale ndi kukhazikika mankhwala, kudzera kwa choyambirira nthaka kuphwanya, kusanja, calcination, monga gulu otaya mpweya, kuti zovuta processing ndondomeko kusintha tinthu kukula kugawa ndi pamwamba katundu, ndi oyenera ❖ kuyanika za utoto zowonjezera, ndi zina zofunika mafakitale.