The insulating powder used for sintering ceramic sheets usually refers to the insulating material spread under the sagger during the sintering process of the sintered ceramic sheets. The use of white electro-corundum 24A F230 for sintering ceramic sheet insulating powder has obvious advantages.
White electro-corundum, also known as white melted aluminum oxide. The grades of white electro corundum 25A 24A 23A are abrasive types in the Russian market according to the aluminum oxide purity and grits.White electro corundum 25A 24A 23A is a high-temperature resistant abrasive in the form of grain and powder. It is mainly composed of aluminum oxide (Al2O3), but in fact, it is artificial corundum, and the performance of artificial abrasives is not inferior to that of natural abrasives. May contain small amounts of other impurities. It is produced by arc melting of industrial aluminum oxide loose powder.
Since the appearance of white fused alumina and quartz are similar, some suppliers of white fused alumina mixed quartz sand in the sand. That is very harmful to the quality and caused to poor grinding performance. To identify white fused alumina (WFA) and quartz sand, users can consider the following characteristics:
Low sodium white aluminum oxide is an advanced form of white corudum. White Fused aluminum oxide with Na2O content of less than 0.2% and less than 0.1% is fused from a mixture of low soda alumina powder and special additives. It reduces the smelting process β The content of alumina has increased α Aluminum oxide conversion rate. β Aluminum oxide is harmful to all aspects of the performance of white alumina without any benefits. It has a negative impact on the microhardness, bending strength, thermodynamic properties, specific gravity, and density of white alumina. The α-phase conversion rate of normal WFA is about 90% with sodium content of 0.3-0.4%. That is not conducive to the better grinding and fire resistance performance of white alumina.
White fused alumina and quartz sand are both white semi-transparent mineral products, and it is difficult to see the difference in appearance with the same particle size and morphology. However, there are significant differences between the two in various aspects, mainly reflected in the following aspects:
White corundum and brown corundum are both fused aluminum oxide raw materials. They are commonly used in industries such as abrasives, refractory, blasting & grinding, and abrasion. However, there are many differences between them.
White electro corundum F180, F220, and F240 are suitable for two-component microcement group A filler. It has better wear resistance, corrosion resistance, and high-temperature resistance than quartz sand. Microcement, also known as Taikoo cement, is a new type of building material that has emerged in recent years. It can achieve seamless integration of the ground, wall, and roof. It is similar to polyurethane water-based flooring. Microcement is a decoration material made by fusing micro cement with resin and adding wear-resistant materials. It has advantages such as good wear resistance, waterproofing, corrosion resistance, and antibacterial properties.
White aluminum oxide and silicon carbide are commonly raw materials for producing Sharpening stones. The grinding effect for knives depends on the two raw material characteristics and the production technology of the sharpening stone.
White aluminum oxide 5-25 microns (also known as white fused alumina/white corundum 200mesh-0) is an extraordinary refractory powder. It is suitable for investment casting to make shells and molds in the lost foam process. There are several significant advantages of the powder.
The melting point of fused white fused alumina is 2050-2100 degrees. It has a strong high-temperature stability performance. Used for investment casting shell sand, it has cost and performance advantages. WFA F120 F280 F400 are suitable for precise casting.
