Silicon carbide (sic) deoxidizer is a new type of strong composite deoxidizer, which replaces the traditional silicon powder carbon powder for deoxidation. Compared with the original process, the physical and chemical properties are more stable, the deoxidation effect is good, and the deoxidation time is shortened and saved. Energy, improve steelmaking efficiency, improve quality, reduce consumption of raw and auxiliary materials, reduce environmental pollution, improve working conditions, and improve the comprehensive economic benefits of electric furnaces are of great value.

There are also many mesh numbers of black silicon carbide powder: #240 #280 #320 #360 #400 #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000. It's just that the amount used is not much, so there is not much production in the market. In terms of the size of silicon carbide used by manufacturers, it is generally between 240 mesh and 400 mesh.

Silicon carbide powder is a powdered product processed by grinding equipment, namely SiC powder or silicon carbide fine powder. According to the properties and characteristics of silicon carbide, it is divided into: black silicon carbide powder and green silicon carbide powder

silicon Carbide

chemical composition

Grade	Sic%	FreeC%	Si+SiO2%	Fe2O3	MgO%	H2O%
Sic75	75±4	2.5±1	17±2	3	0.16	<5
Sic65	65±4	4.5±1	23±2	4	0.12	<5
Sic55	55±4	4.8±1.5	28±3	5±2	0.1	<5
Sic45	45±4	5±2	31±3	7±2	0.1	<5

Size Range	Chemical Composition %
Size Range	SIC	F.C	Fe2O3
16#-90#	>98.50	<0.02	<0.60
100#-180#	>98.50	<0.30	<0.80
220#-240#	>98.50	<0.30	<1.20

Size Range	Chemical Composition %
Size Range	SIC	F.C	Fe2O3
20#-90#	>99.00	<0.20	<0.20
100#-180#	>98.50	<0.25	<0.50
220#-240#	>98.00	<0.25	<0.70

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

Key Advantages of Silicon Carbide Deoxidizer

Silicon carbide deoxidizer stands out in the market due to its exceptional performance characteristics, providing significant benefits to metallurgical operations:

High Deoxidation Efficiency:

The silicon in silicon carbide reacts rapidly with oxygen in molten metal, forming low-density silica (SiO₂) inclusions that easily separate from the melt. This ensures thorough oxygen removal, reducing the risk of defects such as porosity, cracks, and inclusions in the final product.

Controlled Reaction Speed:

Unlike some aggressive deoxidizers that may cause violent reactions or excessive gas evolution, silicon carbide deoxidizes steadily. This controlled reaction minimizes splashing and turbulence in the molten metal, improving operational safety and reducing material loss.

Reduced Slag Formation:

Compared to traditional deoxidizers like ferrosilicon or aluminum, silicon carbide generates less slag during deoxidation. Less slag means lower cleaning costs, reduced metal loss entrained in slag, and improved overall process efficiency.

Improved Metal Quality:

By effectively removing oxygen and controlling impurity levels, silicon carbide deoxidizer enhances the mechanical properties of metals, such as tensile strength, toughness, and ductility. It also reduces the occurrence of defects, ensuring consistent quality in castings, forgings, and rolled products.

Cost-Effective Solution:

Silicon carbide deoxidizer offers a favorable cost-to-performance ratio. Its high deoxidation efficiency reduces the required dosage, while lower slag formation and reduced metal loss translate to long-term cost savings in production.

Silicon carbide deoxidizer

Applications of Silicon Carbide Deoxidizer

Silicon carbide deoxidizer finds extensive use across various metallurgical processes, particularly in the production of:

Steelmaking:

It is widely used in both electric arc furnace (EAF) and basic oxygen furnace (BOF) steelmaking. By removing oxygen from molten steel, it improves the steel's purity and mechanical properties, making it suitable for high-quality steel products such as structural steel, automotive steel, and alloy steel.

Cast Iron Production:

In cast iron smelting, silicon carbide deoxidizer helps control the graphite structure, reducing the formation of undesirable carbides. This enhances the machinability, toughness, and wear resistance of cast iron components used in automotive, machinery, and construction industries.

Non-Ferrous Metallurgy:

While primarily used in ferrous metals, silicon carbide deoxidizer also plays a role in certain non-ferrous metal processes, such as copper and aluminum alloy production, where precise oxygen control is critical for alloy performance.

Foundry Applications:

Foundries rely on silicon carbide deoxidizer to produce high-quality castings with minimal defects. It ensures uniform solidification and improves the surface finish of cast parts, meeting strict industry standards.

Silicon carbide