E nwere ụdị ihe eji emepụta alumina abụọ, otu bụ "ntụ ntụ ngwa ngwa" nke trialumina ma ọ bụ nkume Bayer mepụtara, nke ọzọ bụ site na nnu aluminate ma ọ bụ aluminum ma ọ bụ ha abụọ n'otu oge.
X, ρ-alumina na mmepụta nke X, ρ-alumina
X, ρ-alumina bụ isi ihe eji emepụta bọọlụ alumina a na-arụ ọrụ, ma ọ bụ FCA na mkpụmkpụ. Na Chaịna, a na-akpọ ya "ntụ ntụ mwepụta ngwa ngwa" n'ihi ntụ alumina nke usoro mmiri mmiri ngwa ngwa mepụtara. "Ntụ ntụ ntụ ngwa ngwa" bụ ngwakọta nke X-alumina na p-alumina nwere ọdịnaya dị iche iche n'ihi ọnọdụ mmepụta dị iche iche.
A chọtara X,ρ-alumina na 1950 ma ASTM kwadoro ya na 1960. Na 1970s, x na Europe. Isi ihe dị na teknụzụ X, ρ-alumina bụ mmiri mmiri ngwa ngwa, nke a na-ahụkarị na reactor akwa mmiri mmiri, ebe gas ma ọ bụ mmiri mmiri ọkụ na-achịkwa okpomọkụ akwa ahụ. Na 1975-1980, Tianjin Institute of Chemical Industry mepụtara teknụzụ mmepụta ihe na-ekpo ọkụ ngwa ngwa nke nwere njirimara nke teknụzụ China. O jiri reactor cone, tinye aluminom hydroxide akọrọ na nke a gwepịara egwepịa, ma mee ngwakọta nke X-alumina na ρ-alumina site na iji ọkụ ọkụ 0.1~10s na ọkụ mmiri mmiri ngwa ngwa.
Oge ozi: Eprel-01-2023
