How to distinguish between good quality and bad quality when buying high alumina bricks?

How to distinguish the quality of high alumina bricks when buying high alumina bricks? On the one hand, it can be observed with the naked eye, on the other hand, it can also be detected and distinguished.

Labada qodob ee ugu waaweyn ee indho qaawan lagu arkay:

A. Nadaafadda muuqaalka

Markaan eegno waxa ku jira wasakhda dusha sare ee lebenka jaban, inta badan waxaan ku aragnaa xoogaa dhibco madow ah dusha sare ee lebenka alumina sare. Kuwani waa nijaasta alaabta ceeriin. Aragti ahaan, nijaasta oo yaraata, ayaa ka sii fiican, maxaa yeelay nijaastaani waxay u badan tahay oxides bir ah. , Waxaa si fudud loo yareeyaa bir la shubay oo ku soo qulqulaya jawiga heerkulka sare ee foornada, oo waxyeello u geysata qaab -dhismeedka leben -ka -noqoshada, ka dibna saameynaya nolosha adeegga ee leben -diidmada. Sida waxsoosaarka warshadaha, tayada lebenka jaban ayaa si toos ah u saameeya wax -soo -saarka iyo wax -soo -saarka shirkadda. Lebenkii yaraa ee jabanaa ma sababi doono oo kaliya shaqo joojin dayactir oo kala duwan xagga wax soo saarka, wuxuu kordhiyaa kharashka wax soo saarka, laakiin wuxuu kaloo kordhin doonaa dhismaha iyo wax soo saarka. Khataro badan oo qarsoon oo aan la qiyaasi karin.

B. Midabka muuqaalka iyo baruurta dushiisa

Seeing a refractory brick, we need to see the appearance color and lubricity of the brick. The quality of some refractory bricks is not very good, and the surface lubricity is very poor, which leads to the strength of the refractory bricks. The uniformity of the appearance and color of the refractory brick shows whether the materials are evenly mixed during the production of the refractory brick. The uneven distribution of materials will lead to uneven distribution of the strength of the refractory bricks, and then reduce the overall strength and service life of the refractory bricks.

Saddexda qodob ee ugu waaweyn ayaa lagu kala soocay ogaanshaha:

A. Iska caabin adag

Leben alumina sare leh waxaa ku jira Al2O3 dheeraad ah, taas oo ah walax dhexdhexaad ah oo loo isticmaali karo deegaanka alkaline ama acidic. Sababtoo ah waxaa ku jira silikoon silica SIO2, iska caabbinta qallafsan ee deegaanka alkaline ayaa ka fiican tan deegaanka aashitada ah.

B. Kulaylka heerkulka jilcinta

Sababtoo ah alaabada alumina-ga sare leh waxay leeyihiin Al2O3 sare, wasakh yari, iyo galaas yar oo la suuxin karo, heerkulka jilicsanaanta culeyska ayaa ka sarreeya kan lebenkii dhoobada ahaa, laakiin maxaa yeelay kiristaalo mullite ma samaysmaan qaab dhismeed shabakad, heerkulka adeegsiga uma fiicna kan Diidmada siliceous. .

C. Refractoriness

The refractoriness of high alumina bricks is higher than that of clay bricks, reaching 1750 degrees Celsius to 1790 degrees Celsius, which is a high-quality refractory material.

Korka ayaa ah habka lagu kala sooci karo tayada lebenka alumina sare, waxaan rajaynayaa inay ku anfacdo.