Ferro Silicon nitride (FeSi3N4) is a high-performance material widely used in metallurgy, refractory manufacturing, and precision engineering. Common forms include block and powder. This article mainly explains the ferrosilicon nitride powder. Different particle sizes affect the deoxidation effect of steelmaking. This article introduced the technical standards for 80 mesh, 200 mesh, and 325 mesh FeSi3N4, Zhenxin Metallurgy as a leading manufacturer of ferro silicon nitride,This article will introduce the effect of particle size on steelmaking.
The application of 80 Mesh Ferro Silicon Nitride
Particle Range: 180–200 μm
Key Advantages: High mechanical strength, controlled reaction kinetics, and cost-efficiency.
Industrial Scenarios:
- Foundry Operations: Ideal for large-scale castings like wind turbine components and mining machinery, where slow-release deoxidation minimizes gas porosity.
- Refractory Aggregates: Enhances thermal stability in furnace linings and kiln furniture, reducing crack propagation under cyclic heating.
Manufacturer Innovations:
Reputable silicon nitride iron suppliers employ gradient sintering to achieve unifom porosity (<3%) in coarse particles, ensuring consistent performance in high-stress enviro1. 80 Mesh Silicon Nitride Iron: Coarse Granules for Heavy-Duty Applicati
The application of 200 Mesh Silicon Nitride Iron
Particle Range: 75–80 μm
Key Advantages: Balanced reactivity, improved dispersion, and adaptability across industries.
Industrial Scenarios:
- Steelmaking: Acts as a high-efficiency deoxidizer in electric arc furnaces (EAFs), replacing conventional ferrosilicon to reduce slag formation by 15–20%.
- Advanced Ceramics: Serves as a toughening phase in silicon nitride-based composites for cutting tools and wear-resistant components.
Manufacturer Innovations:
FeSi3N4 producers utilize air classification systems to ensure 92%+ of particles fall within the 200 mesh range, adhering to ISO 9001-certified batch consistency.
The application of 325 Mesh Silicon Nitride Iron
Particle Range: ≤45 μm
Main Advantages: High surface area, low-temperature sinterability, and minimal impurity content.
Industrial Scenarios:
- Refractory Coatings: Forms dense, erosion-resistant layers in continuous casting tundish linings, extending service life by 30–40%.
- Electronics & Aerospace: Used in substrates for high-power semiconductors and thermal barrier coatings for jet engine components.
Manufacturer Innovations:
Usually, silicon nitride iron manufacturers apply nano-encapsulation to prevent oxidation of ultrafine powders, maintaining Si3N4 purity above 76% during storage and processing.
Production Technology of Ferrosilicon Nitride by Zhenxin Metallurgy
Direct nitridation method
Produce process : Silicon iron powder is directly reacted with nitrogen at high temperature to generate silicon iron nitride.
Features: Simple operation, no need for complex equipment, but the nitridation time is long, the energy consumption is high, and the product nitridation rate is low, which is suitable for the production of powdered materials
Carbon thermal reduction nitridation method
Produce process : Using iron ore powder, coke and quartz powder as raw materials, ferrosilicon nitride is generated through carbon reduction and nitridation reaction at high temperature.
Features: Low cost, but the product has many impurities (such as Al, Ca), and the amount of coke needs to be strictly controlled (50% excess is best)3.
Application: Mainly used in the production of refractory materials such as blast furnace mud.
Microwave synthesis method
Production process : Use microwaves to heat ferrosilicon powder and react with nitrogen to quickly complete nitridation.
Features: Low energy consumption, short time (0.5-3h), but the microwave frequency (300MHz-300GHz) and pressure (0.1-0.12MPa) need to be controlled, suitable for small-batch production in the laboratory.
