Diatomaceous ụwa
dị nro diatomite dị iche iche / From Wikipedia, the free encyclopedia
Diatomaceous earth (/ ˌdaɪ.ətəˈmeɪʃəs/ DY-ə-tə-MAY-shəs), diatomite (/daɪˈætəmaɪt/ dy-AT-ə-myte), celite ma ọ bụ kieselgur/kieselguhr bụ ihe na-eme n'okike, dị nro, siliceous nke nwere sedimenti. a ga-akụtu ya ka ọ bụrụ ezigbo ọcha na ntụ ntụ na-acha ọcha. Ọ nwere nha nha nke sitere na ihe karịrị 3 mm ruo ihe na-erughị 1 μm, mana ọ na-adịkarị 10 ruo 200 μm.[1] Dabere na granularity, ntụ ntụ a nwere ike inwe mmetụta abrasive, dị ka ntụ ntụ ntụ, ma nwee njupụta dị ala n'ihi nnukwu porosity ya. Ngwakọta kemịkalụ nke ụwa diatomaceous akpọnwụ akpọnwụ bụ 80-90% silica, yana 2-4% alumina (nke a na-ekwukarị na mineral ụrọ), yana 0.5-2% iron oxide..[1]
Ala diatomaceous nwere ihe fossilized nke diatoms, ụdị microalgae siri ike.[1] A na-eji ya dị ka ihe enyemaka filtration, abrasive dị nro na ngwaahịa gụnyere metal polishes na ntanya eze, igwe ụmụ ahụhụ, absorbent maka mmiri mmiri, matting gị n'ụlọnga maka coatings, ike filler na rọba na roba, mgbochi mgbochi na plastic fim, porous nkwado maka chemical catalysts, awụba nwamba, onye na-arụ ọrụ n'ime ọmụmụ coagulation, ihe na-eme ka dynamite kwụsie ike, ihe mkpuchi ọkụ, na ala maka osisi na osisi ndị nwere ite dị ka ọ dị na nka nke bonsai.[2][3] A na-ejikwa ya na chromatography gas juru n'ọnụ ogidi ndị e ji iko ma ọ bụ ígwè mee dị ka oge nkwụsị..