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Silicon nitride is generally carbon black in color. It has a relatively low density, approximately 42% that of bearing steel. Its low coefficient of thermal expansion is highly beneficial for minimizing the impact of temperature variations on bearing precision.

The sand mill is a state-of-the-art grinding device with the broadest material adaptability and highest efficiency. It features an ultra-narrow grinding chamber, minimal gap between agitator rods, and highly concentrated grinding energy. Equipped with a high-performance cooling system and automatic control system, it enables continuous material processing and discharging. Grinding efficiency varies significantly across different types of sand mills. So, what are the factors influencing the grinding efficiency of sand mills?

Both 4a molecular sieve and silica gel are types of desiccants. Which one has a better drying effect? What are the differences between these two products? The main component of silica gel is SiO2. The acidity difference between the two is also significant. Silica gel has an amorphous structure, while molecular sieve is a crystal. From the perspective of porous materials, the pore size of 4a molecular sieve is uniform; while the pore size distribution of silica gel desiccant is relatively wide, and the size is also one order of magnitude larger than that of molecular sieve. Secondly, molecular sieve is mainly used in the field of catalysts; while silica gel is mainly used for drying purposes. 

Advantages: ‌ high mass transfer efficiency: the surface of regular packing has regular morphology and geometric characteristics, large surface area and high porosity, which can provide a large mass transfer interface.

Zirconia ceramic is a new and technologically advanced high-performance ceramic material. It not only features high strength, high hardness, high temperature resistance, acid and alkali corrosion resistance, and excellent chemical stability, but also exhibits outstanding scratch and wear resistance, flawless appearance, and good thermal conductivity. In addition, zirconia ceramic is easy to process, can achieve an excellent surface finish, and is very suitable for mass production.

Ceramic corrugated structured packing is mainly made of silicoaluminate acid-resistant and chemically corrosion-resistant ceramic material, which can withstand temperatures up to 1300℃, with an operating temperature range of down to -100℃.The product features strong chemical corrosion resistance: it can resist all inorganic acids, organic acids, acidic gases and neutral gases except hydrofluoric acid (HF).