Ukuzinza Kwevolumu Okuhle kanye Nokumelana Nokushisa Kwe-Thermal, Ukuhlanzeka Okuphezulu kanye Ne-Refractoriness Tabular Alumina

i-tabular alumina ta
izinto ze-alumina ze-tabular
i-alumina tabular

Incazelo emfushane

I-Tabular Alumina iyinto ehlanzekile efakwe emazingeni okushisa aphezulu - aphezulu ngaphandle kwezithasiselo ze-MgO ne-B2O3,I-microstructure yayo iyisakhiwo se-polycrystalline esinezinhlangothi ezimbili esinamakristalu amakhulu akhule kahle a-α - Al2O3. I-Tabular Alumina inezimbotshana eziningi ezivaliwe ezincane ku-crystal yomuntu ngamunye , okuqukethwe kwe-Al2O3 kungaphezu kuka-99 % .Ngakho-ke inokuqina okuhle kwevolumu nokumelana nokushaqeka okushisayo , ukuhlanzeka okuphezulu nokuphikisa , amandla amahle kakhulu emishini , ukumelana nokuhuzuka ngokumelene ne-slag nezinye izinto.

XHUMANA MANJE

Ukwakheka Kwamakhemikhali

Into		ukuhlanganisa		izinhlawulo
		Inkomba	Okujwayelekile	Inkomba	Okujwayelekile
Ukwakheka kwamakhemikhali	I-Al2O3 (%)	≥99.20	99.5	≥99.00	99.5
	I-SiO2 (%)	≤0.10	0.06	≤0.18	0.08
	I-Fe2O3 (%)	≤0.10	0.07	≤0.15	0.09
	I-Na2O (%)	≤0.40	0.28	≤0.40	0.30

Izakhiwo Zomzimba

Into		Inkomba	Okujwayelekile
Izakhiwo Zomzimba	Ukuminyana kwenqwaba/cm3	≥3.50	3.58
	Ukumunca izinga lamanzi	≤1.0%	0.75
	Izinga le-porosity	≤4.0%	2.6

Impahla qhathanisa

Into		I-Alumina yeTabular	I-White Fused Alumina
Ukuqhathaniswa kwendawo ye-Tabular Alumina ne-White Fused Alumina	Ukwakheka kwamakhemikhali kwe-homogeneity	ukulingana	Inani eliphakeme kakhulu lama-Na2O
	Usayizi wembotshana omaphakathi/μm	0.75	44
	Izinga le-Porosity/%	3-4	5-6
	Ukuminyana kwenqwaba/cm3	3.5-3.6	3.4-3.6
	Ukuziphatha kwe-Creep/%	0.88	0.04, ukuhlolwa okuphezulu
	Umsebenzi we-Sintering	Phezulu	phansi
	Amandla, ukumelana nokushaqeka okushisayo	Phezulu	phansi
	Izinga lokugqoka /cm3	4.4	8.7

Ithebula namanye ama-Aggregate

Ama-aggregate awumgogodla wokubunjwa okuphikisayo futhi ahlinzeka ngokuzinza kobukhulu emikhiqizweni ephikisayo. Amafrakshini ama-coarser engeza ukushaqeka okushisayo kanye nokumelana nokugqwala futhi izinhlawulo ezihlanganisiwe zithuthukisa ukusatshalaliswa kosayizi wezinhlayiyana futhi andise ukuphikiswa komkhiqizo.

Ikhwalithi engaguquki ye-Tabular alumina ingumphumela wenqubo ye-sinter elawulwa kahle enamazinga okushisa okushisa angaphezu kuka-1800 ° C. Ukusetshenziswa kwezithando zokushisa eziphakeme ezinobuchwepheshe besimanje kuvumela ukuminyana kwezinto ezikhethiwe eziluhlaza ngaphandle kwezinsiza ze-sintering ezingase nomthelela omubi ezindaweni zokushisa eziphezulu ze-refractories.

Njengomphumela wenqubo ye-sinter, ama-aggregate abonisa ukwakheka okufanayo kwe-mineralogical kanye namakhemikhali kuzo zonke izingxenyana. Ngokuphambene nemikhiqizo ehlanganisiwe lapho ukungcola kunqwabelana khona ezinhlawulweni, ukusetshenziswa kwe-sintered aggregates ekwakhiweni kwe-refractory kuqinisekisa ukuziphatha okuzinzile nokuthembekile.

U-Junsheng unikeza amasayizi ahlukahlukene ama-aggregate ukusuka kumafrakshini amaholoholo ukuya kosayizi abacolekile abangu-<45 μm kanye no-<20 μm. Ukuchotshozwa nokugaya kulandelwa izinyathelo eziqinile zokususa ama-ayina eziholela ensimbi yamahhala ephansi kakhulu phakathi kwamafrakshini ahlukahlukene.

Inqubo Yokukhiqiza ye-Tabular alumina

I-alumina powder yempahla eluhlaza

Ukugaya kahle

Ukwenza ibhola elingahluziwe

Ukupholisa okusheshayo

I-Friting

Ukomisa

Ukuhlola

Ukugaya ukugaya ngokuhlukana kazibuthe

Ukuhlola

Ukuthengiswa kwamaphakheji

Isicelo Of Tabular Alumina

I-Tabular Alumina iyimpahla ekhethwayo kuzinza ezisebenza kahle ezingakakhiwe ezisetshenziswa ezimbonini ezihlukahlukene ezihlanganisa insimbi , isisekelo , usimende , ingilazi , i- prtrochemical , i-ceramic kanye nokushiswa kwemfucuza . Ezinye izinhlelo zokusebenza ezivamile ezinganqamuki zihlanganisa ukusetshenziswa kwayo kufenisha yomlilo kanye nokuhlunga kwensimbi.