Kedu ihe bụ isi brik mullet?

Enwere ike ikpebi ihe ndị ahụ dị ka ọdịnaya Al2O3 si dị dabere na ọnọdụ ojiji. Ka ọ dị ugbu a, usoro ihe eji eme ihe bụ:

①Synthetic mullite (sintered ma ọ bụ fused) bụ mkpokọta + sịntetik mullite ezi ntụ ntụ;

②Synthetic mullite (sintered ma ọ bụ fused) bụ mkpokọta + synthetic mullite ezigbo ntụ ntụ + Al2O3 ntụ ntụ dị mma + ntụ ntụ ụrọ dị elu dị elu;

③Synthetic mullite (sintered ma ọ bụ fused) na fused corundum ọcha bụ mkpokọta + sịntetik mullite ezi ntụ ntụ + Al2O3 ezigbo ntụ ntụ + ntụ ntụ dị ọcha dị elu. The urughuru size ruru kwesịrị kwadebere dị ka mgwa ụkpụrụ nke “nnukwu na ma nsọtụ na obere n’etiti”. Jiri sulfite pulp mkpofu mmiri mmiri ma ọ bụ polyaluminum chloride ma ọ bụ polyphosphate dị ka ihe na-ekekọta. Mgbe agwakọtachara ya nke ọma, a na-etolite ya n’okpuru nrụgide dị elu ma gbaa ọkụ n’ime ọkụ ọkụ dị elu. A na-ekpebi ọkụ ọkụ ọkụ site na ọdịnaya nke Al2O3 na brik refractory. N’etiti 1600 ~ 1700 ℃.

A na-ejikọta brik zirconium mullite ngwaahịa na-eme ka ihe nkedo mee nke mullite na zirconia. Zirconium mullite fused brik nwere nnukwu ihe owuwu kristal, okpomọkụ dị nro dị n’okpuru ibu, nkwụsi ike dị mma, ike igwe dị elu na ọnụ ụlọ yana okpomọkụ dị elu, ezigbo mkpuchi mkpuchi, ezigbo ikuku ọkụ, yana ezigbo nguzogide mbuze.

Fe2O3 nwere ụfọdụ solubility siri ike na mullite na corundum na oke okpomọkụ, na-eme ngwọta siri ike. Ngwunye ya siri ike na corundum dị elu karịa nke dị na mullite, na kristal kristal nke mullite na corundum na-etolite n’ihi nhazi nke ngwọta siri ike. Okpomọkụ mbụ na-agbaze nke Fe2O3 maka ihe Al2O3-SiO2 metụtara ọdịnaya Al2O3 na sistemụ ma ọ bụ oke nke Al2O3 / SiO2. Mgbe Al2O3 / SiO2 <2.55, mmalite agbaze okpomọkụ bụ 1380 ℃. Ọ bụrụ na Al2O3 / SiO2> 2.55, mmalite agbaze okpomọkụ bụ 1380 ℃. A na-abawanye okpomọkụ na-agbaze ruo 1460 ℃, ma jiri nwayọọ nwayọọ na-abawanye na ọdịnaya Al2O3 ya. N’ime ikuku na-ebelata, Fe2O3 na-ebelata ka FeO wee desolubilizes n’ime iko iko, na mmalite agbaze okpomọkụ nke usoro na-adaba na 1240 ° C na 1380 ° C, n’otu n’otu.

Site na mmụba nke ọdịnaya Al2O3 na brik mullite, arụmọrụ ya dị elu na-eme ka ọ dịkwuo mma; ebe ọnụọgụ ihe mgbaze na-abawanye, arụmọrụ okpomọkụ dị elu na-ebelata. N’ihi ya, ịchịkwa nke ọma ọdịnaya nke oxides adịghị ọcha, karịsịa ọdịnaya nke K2O, Na2O na Fe2O3, bụ ihe dị mkpa maka ịnweta brik mullite dị elu na nke dị elu. Ejiri ya na mpaghara slag ma ọ bụ gas nwere akụkụ alkali, ọ na-enwe mmetụta na-emebi emebi na brik na-emegharị emegharị.