Magulu Apamwamba a Magnesium-Aluminium Spinel: Sma-66, Sma-78 Ndi Sma-90. Sintered Spinel Product Series

Sintered magnesium aluminate spinel
Magnesia spinel clinker
kupanga spinel

Kufotokozera Kwachidule

Junsheng high-purity magnesium-aluminium spinel system imagwiritsa ntchito alumina yoyera kwambiri komanso yoyera kwambiri ya magnesium oxide ngati zida zopangira, ndipo imatenthedwa kutentha kwambiri. Malingana ndi zolemba zosiyanasiyana za mankhwala, zimagawidwa m'magulu atatu: SMA-66, SMA-78 ndi SMA-90. Product Series.

ONANI TSOPANO

Mawonekedwe

• Junsheng high-purity magnesium-aluminium spinel ali ndi izi:
• High refractory kukana;
• Kukhazikika kwa kutentha kwapamwamba kwambiri;
• Kukana kwabwino kwambiri kwa dzimbiri zamchere zamchere ndi kulowa;
• Kukhazikika kwabwino kwa kutentha kwa kutentha.

ITEM		UNIT	ANTHU
			SMA-78	Zithunzi za SMA-66	SMA-50	Chithunzi cha SMA90
Chemical zikuchokera	Al₂O₃	%	74-82	64-69	48-53	88-93
	MgO	%	20-24	30-35	46-50	7-10
	CaO	%	0.45 max	0.50 max	0.65 max	0.40 max
	Fe₂O₃	%	0.25 max	0.3 kukula	0.40 max	0.20 max
	SiO₂	%	0.25 max	0.35 max	0.45 max	0.25 max
	NaO₂	%	0.35 max	0.20 max	0.25 max	0.35 max
Kuchulukirachulukira g/cm³			3.3 mphindi	3.2mphindi	3.2mphindi	3.3 mphindi
Kuchuluka kwa madzi%			1 max	1 max	1 max	1 max
Porosity rate%			3 max	3 max	3 max	3 max

'S'---sintered; F-----kuphatikizidwa; M------magnesia; A----alumina; B----bauxite

Maminolo a spinel ali ndi chikoka chofunikira pa kutentha kwapamwamba kwa zinthu zotsutsa. Mwachitsanzo, chifukwa cha kachulukidwe kakang'ono ka matenthedwe a spinel (α=8.9x10-*/℃ pa 100 ~ 900 ℃), spinel imagwiritsidwa ntchito ngati chomangira (Kapena chotchedwa cementing phase, matrix), magnesia-alumina njerwa ndi periclase. monga gawo lalikulu la kristalo, pamene kutentha kumasintha kwambiri, kupsinjika kwamkati komwe kumapangidwa kumakhala kochepa, ndipo njerwa sizosavuta kuthyoka, motero kukhazikika kwamafuta a njerwa kumatha kuwongolera (njerwa za magnesia-aluminium Kukhazikika kwamafuta ndi 50 ~ 150 nthawi).

Kuonjezera apo, chifukwa spinel ili ndi zinthu zabwino monga kuuma kwakukulu, kukhazikika kwa mankhwala, ndi malo osungunuka kwambiri, ndipo imagonjetsedwa kwambiri ndi dzimbiri ndi kusungunuka kosiyanasiyana pa kutentha kwakukulu, kupezeka kwa mchere wa spinel muzogulitsa kwathandizira Kutentha kwapamwamba kwa ntchito. mankhwala.

Chifukwa chachikulu chomwe kutentha kumafewetsa kutentha kwambiri kwa njerwa za magnesia-aluminium (poyambira sikochepera 1550-1580 ℃) ndikwapamwamba kuposa njerwa za magnesia (poyambira ndi pansi pa 1550 ℃) ndikuti kapangidwe ka matrix ndi kosiyana. .

Mwachidule, ma spinels ndi zida zabwino kwambiri potengera kusungunuka, kukulitsa kwamafuta, kuuma, ndi zina zambiri, zokhala ndi mankhwala okhazikika, kukana kwambiri kukokoloka kwa slag zamchere, komanso kukana kukokoloka kwachitsulo chosungunuka. .

Zambiri Zoyambira

Junsheng high-purity magnesia-aluminium spinel ali ndi zonyansa zochepa kwambiri komanso ntchito yabwino kwambiri yotentha kwambiri. High-purity spinel ndi yoyenera kupangira zida zopangirako monga njerwa zopumira, njerwa zapampando, ladles, zovundikira ng'anjo yamagetsi yamagetsi, zida zokanira zowotchera rotary, ndi zida zokanira zosungunulira ma alloys. mankhwala, komanso ma spinel-containing shape sets.

Zamgululi zingathandize kusintha kukana dzimbiri slag wa zipangizo refractory, ndi kuthetsa vuto la zinthu akulimbana chifukwa kuwonjezera magnesium yaiwisi.