The steelmaking deoxidation process is an indispensable part of the steelmaking process. It can effectively improve the quality of steel and improve the performance of products. It can also increase the operability and economic benefits of the process.

Silicon carbide grit, segmented sand, number sand, and silicon carbide models can also be distinguished according to the number of objects, generally 8 mesh-320 mesh. The larger the model, the finer the size. Those greater than 320# are usually called silicon carbide powder.

Physical Properties

High Hardness:

With a Mohs hardness of 9-9.5, it's second only to boron carbide and diamond, effectively removing a variety of hard surface materials.

Good Wear Resistance:

It offers excellent wear resistance, withstanding prolonged, intensive use and boasting a long service life.

Strong Thermal Stability:

It remains stable even at high temperatures, undergoing no chemical changes or structural degradation, with a maximum operating temperature of approximately 1900°C.

Excellent Chemical Stability:

It offers strong resistance to acids, alkalis, and other chemicals, making it suitable for use in a variety of harsh chemical environments.

Grit Size

Grit sizes range widely, with common ones including 120, 180, 240, 320, 400, and 600. The smaller the mesh number, the coarser the particles. For example, 120 mesh is suitable for general grinding and polishing, while 600 mesh is often used in jewelry making, precision engineering, and other applications requiring extremely high surface finishes.

SiC Grit

chemical composition

Model	Chemical Composition %
Model	SiC	Free Carbon	Fe2O3
SiC 98	98 min	0.2 max	0.60 max
SiC 97	97.0 min	0.3 max	1.20 max
SiC 90	90.0 min	1.0 max	1.20 max
SiC 88	88.0 min	4.0 max	1.5 max
Model-SiC Briquette	SiC	Al2O3	Fe2O3
SiC Briquette 70	70.0 min	5.0 max	3.0 max
SiC Briquette 65	65.0 min	5.0 max	3.0 max

What are the advantages of silicon carbide compared to traditional deoxidizers?

Good stability

Compared with traditional silicon powder and carbon powder, SiC grit deoxidizer has more stable physical and chemical properties.

Good deoxidation effect

Carbide Silicon grit has fast deoxidation speed, early slag formation, thick reducing atmosphere, and very rich foam. It can effectively reduce the oxygen content in steel and achieve the purpose of deoxidizing molten steel.

Improve the absorption rate of elements

Silicon Carbide grit can also effectively increase the absorption rate of elements.

Reduce costs

It can replace the more expensive traditional deoxidizer ferrosilicon powder and alloy powder, reducing steelmaking costs.

Improve the quality of steel

Using silicon carbide grit deoxidizer can improve the quality of steel, stabilize the quality of molten steel, refine the grains, and remove harmful impurities from the molten steel.