Bonding Agents in Brown Fused Alumina Abrasive Products Manufacturing

1. Increase the proportion of flux in the bonding agents in brown fused alumina abrasive products, such as increase the amount of bonding agent feldspar and borosilicate glass properly. Of course the prescription needs adjusting, for instance, when the flux amount is increased, the Al2O3 in the brown fused alumina abrasive products in the bonding agent should be increased accordingly.

2. Add proper mineralizing agent with high purity into the bonding agent, such as Mg, Ca, Zn, Li, B, etc. If high-purity CaCO3 is used as raw material, Kaolin, limestone, and silica are used as basic composites to compose the bonding agent, which can be used to sinter high intensity ceramic abrasives with brown fused alumina abrasive products.

3. Adopt clay with low-melting point. Compared with Kaolinite, illite contains more K20 and less water. Such as using sericite clay to replace Kaolinite clay. Sericite is the fine flaky muscovite formed under hydrothermal solution or metamorphic function; it has the clay's property and is one of the clay minerals in south China's ceramics, it is rich in K20 and is not easy to deform in lower temperature. Besides that, its crystal water proportion content is lower in all kinds of clay minerals, so it is easy to quick firing. Kaolinite clay refractoriness is higher around 1580 to 1780 degrees centigrade; illite refractoriness is lower around 1370 degrees centigrade, which is appropriate for brown fused alumina abrasive products.

Author: Liwei Chu 
Copyright: iAbrasive.com--Abrasives & Diamond Tools Market