nkhani

Diatomitendi mtundu wa miyala siliceous, makamaka anamwazikana ku China, United States, Denmark, France, Romania ndi mayiko ena. Ndi mtundu wa miyala ya biogenic siliceous accumulation, yomwe imapangidwa makamaka ndi zotsalira zama diatoms akale. Kuphatikizika kwake kwamankhwala kumakhala makamaka SiO2, yomwe imatha kuyimiridwa ndi SiO2 · nH2O, ndipo kapangidwe ka mchere ndi opal ndi mitundu yake.

China ili ndi matani 320 miliyonidziko lapansi diatomaceousnkhokwe ndi matani opitilira 2 biliyoni omwe akuyembekezeka kukhala nkhokwe, omwe makamaka amakhala ku East China ndi kumpoto chakum'mawa kwa China. Pakati pawo, osiyanasiyana ndi lalikulu, ndi Jilin ali nkhokwe zambiri (54.8%, amene kutsimikiziridwa nkhokwe za Linjiang City, Jilin Province nkhani Asia.), Zhejiang, Yunnan, Shandong, Sichuan ndi zigawo zina, ngakhale kufalikira ambiri, koma apamwamba nthaka kokha anaikira mu Changbai Mountain m'dera la kalasi ya 3 m'dera la mapiri a Jilin ndi madera ena a mchere. Chifukwa cha zonyansa zambiri, sangathe kukonzedwa mwachindunji ndikugwiritsidwa ntchito. Mankhwala a diatomite makamaka SiO2, omwe ali ndi zochepa za Al2O3, Fe2O3, CaO, MgO, ndi zina zotero. Muli pang'ono Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 ndi organic matter. SiO2 nthawi zambiri imakhala yopitilira 80%, mpaka 94%. Chitsulo chachitsulo chokhala ndi chitsulo chapamwamba kwambiri cha diatomaceous lapansi nthawi zambiri chimakhala 1 ~ 1.5%, ndi alumina ndi 3-6%. Mchere wopangidwa ndi diatomite makamaka ndi opal ndi zosiyana zake, zotsatiridwa ndi mchere wa dongo-hydromica, kaolinite ndi mineral detritus. Zinyalala zamchere zimaphatikizapo quartz, feldspar, biotite ndi organic matter. Zomwe zili mu organic zimachokera ku kuchuluka mpaka kupitirira 30%. Mtundu wa dziko lapansi la diatomaceous ndi loyera, loyera, lotuwa komanso loyera-bulauni, ndi zina zotero. Lili ndi mphamvu za fineness, looseness, kuwala kolemera, porosity, kuyamwa kwa madzi ndi kutsekemera kwamphamvu. Ambiri mwa silika wa diatomite si crystalline, ndipo zili sungunuka silicic asidi mu alkali ndi 50 ~ 80%. Amorphous SiO2 imakhala kristalo ikatenthedwa mpaka 800 ~ 1000 ° C, ndipo asidi osungunuka a silicic mu alkali amatha kuchepetsedwa mpaka 20 ~ 30%.

Dziko la Diatomaceoussichikhala ndi poizoni, chosavuta kupatukana ndi chakudya, ndipo chingagwiritsidwenso ntchito mutapatukana. Akatswiri ambiri othana ndi tizirombo amauzindikira kuti ndi mankhwala ophera tizilombo. Chifukwa chomwe dziko lapansi la diatomaceous lingalepheretse tizirombo ndikuti pamene tizilombo timakwawa mu chakudya chosakanikirana ndi dziko lapansi la diatomaceous, dziko lapansi la diatomaceous lidzamamatira pamwamba pa thupi la tizilombo, kuwononga waxy wosanjikiza wa epidermis ya tizilombo ndi nyumba zina zopanda madzi, ndikuyambitsa thupi la tizilombo. Kutaya madzi kumabweretsa imfa. Dziko la Diatomaceous ndi zotulutsa zake zitha kugwiritsidwanso ntchito ngati mankhwala ophera tizilombo ndi herbicides m'minda yazipatso. Ma diatomaceous earth particles amatha kugawidwa mumlengalenga kapena kukwiriridwa munthaka kuti adsorbe ndi kupha tizirombo tina. Dziko lapansi la Diatomaceous litha kugwiritsidwa ntchito ngati chonyamulira chabwino kwambiri komanso choyakira feteleza wamankhwala. The micropores padziko diatomaceous lapansi akhoza wogawana kuyamwa ndi kukulunga mankhwala feteleza kupewa yaitali lotseguka stacking ndi mayamwidwe chinyezi ndi agglomeration. Lili ndi 60-80% diatoms. Feteleza watsopano wokonda zachilengedwe wokhala ndi dothi komanso tizilombo tating'onoting'ono tating'ono tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'onoting'ono, timalimbikitsa kukula kwa mbewu, ndikuwongolera dothi lokha kuti likwaniritse cholinga chochepetsa kuchuluka kwa feteleza wamba ndi mankhwala ophera tizilombo ndi 30-60% pakukula kwa mbewu.