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Astaamaha qaab-dhismeed-yar ee diatomite

Halabuurka kiimikaad ee dhulka diatomaceous inta badan waa SiO2, laakiin qaab dhismeedkiisu waa amorphous, taas oo ah, amorphous. SiO2-kan amorphous waxa sidoo kale loo yaqaan opal. Dhab ahaantii, waa SiO2 colloidal amorphous ah oo biyo ka kooban, kaas oo lagu muujin karo SiO2⋅nH2O. Sababtoo ah meelaha kala duwan ee wax soo saarka, biyaha ku jira way kala duwan yihiin; Qaab-dhismeedka yar-yar ee shaybaarrada diatomite waxay inta badan la xidhiidha noocyada diatoms-ka la dhigo. Sababtoo ah noocyada kala duwan ee diatoms, qaab-dhismeedka microscopic ee macdanta diatomite ee la sameeyay Waxaa jira kala duwanaansho muuqda oo qaab dhismeedka, sidaas darteed waxaa jira kala duwanaansho waxqabad. Kuwa soo socdaa waa deebaajiga diatomite oo ay ku samaysmaan kayd dhuleed oo ku yaala meel ka mid ah dalkeenna oo aynu daraasad ku samaynay, diatomyaduna inta badan waa toosan.

Codsiga diatomit

Sababo la xiriira qaab-dhismeedka yar yar ee diatomite, waxay leedahay codsiyo kala duwan oo dhinacyo badan leh sida qalabka dhismaha, kiimikooyinka, beeraha, ilaalinta deegaanka, cuntada, iyo tignoolajiyada sare. Dalka Japan, 21% dhulka diatomaceous ayaa loo isticmaalaa warshadaha walxaha dhismaha, 11% waxa loo isticmaalaa agabka refractory, 33% waxa loo isticmaalaa sidayaal iyo buuxinta. Waqtigan xaadirka ah, Japan waxay ku guulaysatay natiijooyin wanaagsan horumarinta iyo isticmaalka qalabka cusub ee dhismaha.

Marka la soo koobo, codsiyada ugu muhiimsan ee diatomite waa:

(1) Isticmaal qaab dhismeedkeeda yar yar si aad u diyaariso agabka gargaarka shaandhada kala duwan iyo taageerooyinka kicinta. Tani waa mid ka mid ah isticmaalka ugu muhiimsan ee dhulka diatomaceous. Waxay si buuxda u isticmaashaa sifooyinka yaryar ee dhulka diatomaceous. Si kastaba ha ahaatee, macdanta dhulka diatomaceous ee loo isticmaalo sida gargaarka shaandhada ayaa doorbidaya qani ku ah corinosites, iyo macdanta dhulka diatomaceous ee leh qaab dhismeedka algae toosan oo ah sida qaadaha ayaa ka fiican sababtoo ah algae toosan ayaa leh dusha sare oo gudaha ah.

(2) Diyaarinta ilaalinta kulaylka iyo walxaha dib-u-celinta. Ka mid ah qalabka kuleylka kuleylka ka hooseeya 900 ° C, lebennada kuleylka kuleylka diatomite ayaa ah doorashada ugu habboon, taas oo sidoo kale ah mid ka mid ah meelaha ugu muhiimsan ee codsiga macdanta diatomite ee dalkayga.

(3) Dhulka diatomaceous waxaa loo isticmaali karaa ilaha ugu muhiimsan ee SiO2 firfircoon. Maaddaama SiO2 ee dhulka diatomaceous uu yahay amorphous, waxay leedahay falcelin sare. Tusaale ahaan, aad bay ugu habboon tahay in loo isticmaalo si looga falceliyo alaabada cayriin ee calcareous si loogu diyaariyo boodhka silicate ee kaalshiyamka alaabta aan dabka lahayn. Dabcan, wasakhda qaar waa in laga saaraa macdanta diatomite ee heerka hoose.

(4) Isticmaal sifooyinkeeda xayaysiinta microporous si aad u diyaariso bakteeriyada bakteeriyada iyo bakteeriyada. Tani sidoo kale waa mid ka mid ah codsiyada cusub ee muhiimka ah ee diatomite, taas oo ah qalab shaqeynaya oo leh saameyn deegaan. Dhererka bacillus guud ahaan waa 1-5um, dhexroorka cocci waa 0.5-2um, cabirka daloolka dhulka diatomaceous waa 0.5um. gaadhaan ujeeddada gaabis-sii-daynta iyo saamaynta muddada-dheer. Hadda, dadku waxay isticmaali karaan habab tignoolajiyadeed sare leh si ay u diyaariyaan nooca dhulka diatomaceous-ka-hortagga caariyaysiga iyo walxaha shaqaynta bakteeriyada leh dhulka diatomaceous sida side.