nkhani

Makhalidwe a microstructure a diatomite

Mankhwala a dziko lapansi diatomaceous makamaka SiO2, koma mawonekedwe ake ndi amorphous, ndiko kuti, amorphous. SiO2 ya amorphous iyi imatchedwanso opal. M'malo mwake, ndi madzi okhala ndi amorphous colloidal SiO2, omwe amatha kufotokozedwa ngati SiO2⋅nH2O. Chifukwa cha madera osiyanasiyana opanga, madzi amakhala osiyana; microstructure ya zitsanzo za diatomite makamaka zokhudzana ndi mitundu ya diatoms yoyikidwa. Chifukwa cha mitundu yosiyanasiyana ya ma diatoms, mawonekedwe a microscopic a ore opangidwa ndi diatomite Pali kusiyana koonekeratu pamapangidwe, kotero pali kusiyana kwa ntchito. Zotsatirazi ndi gawo la diatomite lomwe limapangidwa makamaka ndi ma depositi padziko lapansi m'malo ena m'dziko lathu lomwe taphunzira, ndipo ma diatoms amakhala ozungulira.

Kugwiritsa ntchito diatomite

Chifukwa cha microstructure yapadera ya diatomite, ili ndi ntchito zosiyanasiyana m'madera ambiri monga zomangira, mankhwala, ulimi, kuteteza chilengedwe, chakudya, ndi zamakono. Ku Japan, 21% ya nthaka ya diatomaceous imagwiritsidwa ntchito popanga zinthu zomangira, 11% imagwiritsidwa ntchito pazinthu zokanira, ndipo 33% imagwiritsidwa ntchito ponyamula ndi zodzaza. Pakali pano, Japan yapeza zotsatira zabwino pakupanga ndi kugwiritsa ntchito zipangizo zatsopano zomangira.

Mwachidule, ntchito zazikulu za diatomite ndi:

(1) Gwiritsani ntchito mawonekedwe ake a microporous pokonzekera zida zosiyanasiyana zothandizira fyuluta ndi zothandizira zothandizira. Ichi ndi chimodzi mwa ntchito zazikulu za diatomaceous lapansi. Imagwiritsa ntchito mokwanira mawonekedwe a microstructure a dziko lapansi la diatomaceous. Komabe, miyala yapadziko lapansi ya diatomaceous yomwe imagwiritsidwa ntchito ngati zosefera imakonda kukhala ndi ma corinosites, ndipo miyala yapadziko lapansi ya diatomaceous yokhala ndi mzere wa algae ngati chonyamulira chothandizira ndi yabwino chifukwa algae amzere amakhala ndi malo akulu kwambiri mkati.

(2) Kukonzekera kuteteza kutentha ndi zipangizo zotsutsa. Pakati pa zida zotenthetsera zomwe zili pansi pa 900 ° C, njerwa zosungunulira za diatomite ndizosankha zabwino kwambiri, zomwenso ndi imodzi mwamagawo ogwiritsira ntchito migodi ya diatomite m'dziko langa.

(3) Dziko lapansi la Diatomaceous lingagwiritsidwe ntchito ngati gwero lalikulu la SiO2 yogwira. Popeza SiO2 mu diatomaceous lapansi ndi amorphous, imakhala ndi reactivity yayikulu. Mwachitsanzo, ndi bwino kwambiri ntchito anachita ndi calcareous zopangira kukonzekera kashiamu silicate bolodi zipangizo fireproof. Inde, zonyansa zina ziyenera kuchotsedwa pa miyala ya diatomite yotsika.

(4) Gwiritsani ntchito mawonekedwe ake a microporous adsorption kukonzekera antibacterial ndi antifungal agents. Ichi ndi chimodzi mwazofunikira zatsopano za diatomite, zomwe ndizinthu zogwira ntchito zomwe zimakhala ndi chilengedwe. Kutalika kwa mabakiteriya ambiri ndi 1-5um, m'mimba mwake wa cocci ndi 0.5-2um, ndi pore kukula diatomaceous lapansi ndi 0.5um, kotero fyuluta chinthu chopangidwa ndi diatomaceous lapansi akhoza kuchotsa mabakiteriya, ngati Ufumuyo ndi diatomaceous lapansi fyuluta chinthu Antibacterial wothandizira ndi photosensitizers kukhala bwino anawonjezera odana ndi tizilombo toyambitsa matenda, zipangizo ndi mabakiteriya anawonjezera zotsatira ndi mabakiteriya. cholinga cha kumasulidwa pang'onopang'ono ndi zotsatira za nthawi yaitali. Tsopano, anthu angagwiritse ntchito njira zamakono zokonzekera diatomaceous earth-type anti-mildew ndi antibacterial functional materials ndi diatomaceous earth ngati chonyamulira.