Nhazi na arụmọrụ nke aluminom-magnesium spinel?

Njirimara pụrụ iche nke magnesium-aluminom spinel, dị ka nguzogide corrosion slag, nguzogide ujo dị ọkụ na ike dị elu dị elu, na-eme ka ejiri ya mee ihe n’ọtụtụ ihe maka nrụzi nchara. Nkwadebe nke spinel pre-synthetic synthetic na-enye akụrụngwa ọhụrụ maka imepụta amorphous na ihe nrụgharị dị oke ọcha. Ọzọ, onye nchịkọta akụkọ Qianjiaxin Refractories ga -ewebata gị:

Ụzọ abụọ bụ isi maka ịhazi spinel bụ sintering na electrofusion. A na-eji ọtụtụ ihe eji eme spinel ihe alumina sịntetị dị elu na magnesia nke kemịkalụ, nke a na-agbaze n’ọkụ na igwe gbazere n’ọkụ ọkụ eletrik. Uru nke magnesia-aluminom spinel bụ na usoro a bụ usoro ceramization na-aga n’ihu, nke na-achịkwa ọsọ nri na nkesa nkesa okpomọkụ dị na krọn, na-ebute oke kristal nke 30-80μm na porosity dị ala (<3%) Ngwaahịa.

Mmepụta nke magnesium-aluminom spinel site na usoro electrofusion bụ ọrụ nnọchi anya otu. Nnukwu ihe nkedo kwesịrị ịgbatị oge jụrụ oyi. Ịjụ oyi nke ngọngọ nkedo na -eduga n’inweghi microstructure. N’ihi ịjụ oyi ngwa ngwa, kristal mpụta mpụta dị obere karịa kristal spinel dị n’ime. A na -etinye adịghị ọcha ebe na -agbaze ala na etiti. Ya mere, ọ dị mkpa ịhazi na ijikọ ngwakọta ngwakọta magnesia-aluminum spinel.

Uru ọzọ nke iji akụrụngwa dị ọcha iji mepụta aluminom-magnesium spinel bụ ọdịnaya adịghị ọcha dị na mkpokọta aluminom-magnesium spinel (MgO A1203> 99%), ọkachasị ọdịnaya dị ala nke SiO2, nke na-eme ka ọ nwee ezigbo arụmọrụ okpomọkụ. . Spinel dabeere na Bauxite adịghị mma dị ka spinel nke sitere na alumina sịntetik, enwere ike iji ya naanị na akụkụ nwere obere ihe achọrọ maka nguzogide corrosion na ike okpomoku dị elu.

Ọkpụkpụ aluminom nwere ọgaranya magnesium (MR):

Ọnụnọ trace periclase na spinel aluminum nke nwere magnesium na-emetụta njirimara na ngwa nke spinel. Ebe ọ bụ na spinel bara ọgaranya nke magnesia MR66 enweghị alumina efu, spinel agaghịzi emepụta spinel mgbe agbakwunyere ya na brik magnesia wee gbasaa na olu. Ojiji nke brik magnesia na MR56 na sọlfọ rotary kilns nwere ike gbanwee nguzogide ujo dị ọkụ ma nwee ike dochie chrome ore. Usoro na -agbanwe nguzogide ujo ikuku bụ na spinel nwere mmụba dị ala karịa periclase.

Ọnụ ego MgO dị na MR66 na-emetụta ngwa ya na ihe ndị na-ebute mmiri, dị ka nkedo. N’ihi hydration nke periclase, enwere ike imepụta brucite (Mg (OH) 2), nke ga -eme ka ngọngọ nkedo gbanwee ma bute mgbawa. Enwere ike iji spinel aluminom bara ọgaranya na sọl ciment, ọkachasị na mpaghara tuyere na mpaghara oke okpomọkụ.

Aluminium (AR) magnesium spinel:

A na-eji ihe nrụpụta nke nrụpụta nke aluminom-magnesium spinel bara ụba na-emepụta nchara. Isi njirimara abụọ na-abawanye ngwa nke aluminom-magnesium-spinel bara ụba: ọ nwere ike melite ike oke ọkụ na nguzogide ujo nke ihe ahụ, yana nguzogide corrosion nke slag steel. Mgbakwunye nke spinel bara ọgaranya nke aluminom-magnesium bara ụba na nke alumina castable na-agbanwe ike oke okpomoku.

Ọdịdị spinel dị n’ime ihe mgbapụta aluminom-magnesium spinel bụ 15% -30% (nke kwekọrọ na 4% -10% MgO). Nnyocha ndị e mere n’oge na-adịbeghị anya kwenyere na n’ime ọkụ ọkụ Al-Mg spinel maka ladle, silicon dị ala (<0.1% SiO2) ma e jiri ya tụnyere silicon dị elu (1.0% SiO2) brik spinel Al-Mg nwere ike ibelata ndụ ladle site na 60%. Nke a na-egosi na arụmọrụ kacha mma nwere ike tinye naanị na ihe sịntetị dị ọcha.

Ntụnyere dị n’etiti spelis magnesia-aluminom spinel na nhazi nke magnesia-aluminum spinel:

Ịmepụta spinel na ọnọdụ n’ime ihe nkedo nwere ike belata ụgwọ nrụpụta, mana usoro a nwekwara ọghọm. Mgbe alumina na magnesia meghachiri n’ụdị spinel, a ga -enwe mmụba olu doro anya. Dabere na ngụkọta oge nke oke ihe owuwu, mmụba olu nwere ike iru 13%, mana mmụba olu n’ezie bụ ihe dịka 5%, nke ka dị elu, enweghị ike izere omume nke mgbawa usoro. A na -ejikarị ihe mgbakwunye silicon ntụ ntụ (dị ka ntụ ntụ siliki) iji kwalite mmebi nke mmiri mmiri ma kwe ka ụfọdụ nrụrụ mpaghara gbochie mmụba olu. Agbanyeghị, ike ikwu oke ọkụ nke iko fọdụrụ ga -enwe nnukwu mmetụta.