Diatomaceous pasi imhando yedombo resiliceous rinonyanya kugoverwa munyika dzakaita seChina, United States, Japan, Denmark, France, Romania, etc. Iro biogenic siliceous sedimentary dombo rinonyanya kuumbwa nemasara emadiatoms ekare.Chimiro chayo chemakemikari inonyanya kuSiO2, iyo inogona kumiririrwa neSiO2 · nH2O, uye iyo mineral composition is opal uye zvakasiyana-siyana.Nzvimbo dzakachengetwa dzepasi diatomaceous muChina i320 miriyoni matani, ine inotarisirwa kuchengetedza inopfuura 2 bhiriyoni matani, kunyanya yakatarisana muEast China neNortheast China.Pakati pavo, Jilin (54.8%, neLinjiang Guta riri mudunhu reJilin rinomiririra nzvimbo dzekutanga dzakaratidzwa muAsia), Zhejiang, Yunnan, Shandong, Sichuan, nemamwe mapurovhinzi ane kugovaniswa kwakakura, asi ivhu remhando yepamusoro rinongoiswa mukati. Changbai Mountain nzvimbo yeJilin, uye mamwe akawanda mamineral deposits ari giredhi 3-4 ivhu.Nekuda kwehuwandu hwekusachena kwemukati, Haikwanise kugadziridzwa zvakananga uye kushandiswa.Chinhu chikuru chepasi diatomaceous semutakuri iSiO2.Semuenzaniso, chikamu chinoshanda cheindasitiri vanadium catalyst iV2O5, iyo cocatalyst ndeye alkali metal sulfate, uye inotakura inonatswa diatomaceous pasi.Ongororo dzakaratidza kuti SiO2 ine simba rekudzikamisa pazvikamu zvinoshanda uye inowedzera nekuwedzera kweK2O kana Na2O zvinyorwa.Chiitiko cheiyo catalyst chine chekuitawo nekupararira uye pore chimiro chemutakuri.Mushure mekurapwa kweasidhi yepasi diatomaceous, zviri mukati meiyo oxide tsvina inoderera, zvirimo zveSiO2 zvinowedzera, uye iyo chaiyo nzvimbo uye pore vhoriyamu inowedzera.Naizvozvo, iyo inotakura mhedzisiro yeyakanatswa diatomaceous pasi iri nani pane iyo yakasikwa diatomaceous pasi.

Diatomaceous pasi rinowanzo kuumbwa kubva kune silicate rinosara mushure mekufa kweimwe-sero algae, inowanzozivikanwa semadiatoms, uye musimboti wayo ndeye aqueous amorphous SiO2.Diatoms inogona kurarama mumvura yakachena uye yemunyu, ine marudzi mazhinji.Iwo anogona kazhinji kukamurwa kuita "central order" diatoms uye "feathered order" diatoms, uye yega yega ine akawanda "genera" ayo akaomarara.

Chinhu chikuru chezvisikwa diatomaceous pasi iSiO2, ine yepamusoro-soro ine ruvara ruchena uye SiO2 zvinyorwa zvinowanzopfuura 70%.Single diatoms haina ruvara uye yakajeka, uye ruvara rwediatomaceous pasi rinoenderana nevhu zvicherwa uye organic zvinhu.Kuumbwa kwepasi diatomaceous kubva kune akasiyana mineral sources anosiyana.

Diatomaceous pasi, inozivikanwawo se diatom, ifossilized diatom dhipoziti yakaumbwa mushure mekufa kwechirimwa chimwe chete chine sero uye nguva yekuisa yemakore angangoita 10000 kusvika 20000.Diatoms yaive imwe yezvipenyu zvekutanga kuoneka paPasi, ichigara mumvura yegungwa kana yegungwa.

Iyi mhando yepasi diatomaceous inoumbwa nekuiswa kwemasara e-single-celled aquatic plant diatoms.Iyo yakasarudzika kuita kweiyi diatom ndeyekuti inogona kutora yemahara silicon mumvura kuti igadzire mapfupa ayo.Kana hupenyu hwayo hwapera, inoisa uye inoumba diatomaceous pasi pasi pemamwe mamiriro e geological.Iyo ine zvimwe zvakasarudzika zvimiro, senge porosity, yakaderera concentration, hombe chaiyo nzvimbo, hukama incompressibility, uye kugadzikana kwemakemikari.Mushure mekushandura saizi yekugovera uye zvimiro zvepasi pevhu rekutanga kuburikidza neprocessing maitiro akadai sekupwanya, kurongedza, kuverenga, kuyerera kwemhepo, uye kubviswa kwetsvina, inogona kuve yakakodzera kune akasiyana maindasitiri zvinodiwa senge machira uye pendi zvinowedzera.