Ferrosilicon Nitride

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Ferrosilicon Nitride Specification

Melting Point
About 2200C

Application
Widely used as a refractory material with high strength and thermal stability, mainly in blast furnace tap hole areas and iron troughs

Hardness (%)
High (approx. 9 Mohs)

Surface Finish
Fine powder or granular

Chemical Composition
Si3N4, Fe, Si, N

Water Absorption
< 1.5%

Purity(%)
> 98%

Form
Powder/Granule

Density
2.5 Gram per cubic centimeter(g/cm3)

Usage & Applications
Production of refractory bricks, tap hole clay, blast furnace lining, metallurgy, ceramics industry

Product Type
Ferrosilicon Nitride

Types of Refractories
Nitride bonded refractories

Shape
Powder or granule

Porosity
Low apparent porosity (< 25%)

Dimensional Stability
Excellent stability at high temperatures

Strength
High mechanical strength, especially at high temperatures

Specific Gravity
2.62.8

Thermal Conductivity
Low

Color
Gray to dark gray

About Ferrosilicon Nitride

The company has brought the ferrosilicon nitride for the customers. This is a compound which is specially designed for being an effective raw material. The nitride has high performance and importance in the production of the abrasives. It has significant resistivity against the wear and tear. The moisture proof and porosity also make the ferrosilicon nitride an ideal option. Its sustainability is high, and the final product is enhanced. Our company ensures the remarkable properties of the supplied raw material.

Applications :

Powder ferrosilicon nitride is mainly used in plugging stemming of blast furnace, few in iron runner material or other amorphous refractories. With increasing requirement on quality of refractories, more and more refractory products make use of ferrosilicon nitride or silicon nitride.
Grain ferrosilicon nitride is mostly suitable for oriented silicon steel or steels which are increased strength with nitrides (HRB400 steel bar for example)

Technical Specification :

Chemical Composition (%)	SiN	Si	N	Fe	Al+Ca
Element Content	75-80	47-51	30-33	12-16	&lt 2.5
Element Content	70-75	49-52	28-30	12-16	&lt 2.5
Granularity Distribution
(1) Powder Product (%)
Grain diameter	-45 m	-45 m-75 m	+75 m-150 m	+150 m-75 m
Fine Powder	80	5-1.5	&lt 3
Common Powder	70-80	10-20	8-15	&lt 3
Coarse Powder	60-70	10-16	10-16	&lt 8
(2) Granular Product
Grain Diameter			Percentage
Fine Grain	3-5 mm			90
Common Grain	3-10mm			90
Coarse Grain	10-50mm			90
Note : It can be customized into 10-100mm or 0-20 mesh in lump, grain and powder.

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Exceptional Thermal and Mechanical Properties

Ferrosilicon Nitride excels in environments with extreme temperature fluctuations because of its very low thermal expansion and high resistance to thermal shock. Its mechanical strength remains high even at elevated temperatures, ensuring reliable performance in steelmaking and refractory applications. Low porosity and fine particle sizing contribute to its durability and stability.

Superior Chemical and Dimensional Stability

This material exhibits excellent resistance to oxidation at high temperatures as well as chemical stability against slag attack. Such features prevent degradation or deformation in demanding industrial settings, particularly within blast furnace tap holes and iron troughs, thus elongating the service life of lining and components.

Optimal Packaging and Storage for Longevity

Ferrosilicon Nitride is supplied in 25 kg or 50 kg plastic-lined woven bags or jumbo bags as needed. To maintain its integrity, the material should be kept in a cool, dry place, away from moisture. When properly sealed, it offers a shelf life of up to 12 months, ensuring consistent quality for users throughout the ceramics, metallurgy, and refractory industries.

FAQs of Ferrosilicon Nitride:

Q: How should Ferrosilicon Nitride be stored to preserve its quality?

A: Ferrosilicon Nitride should be kept in a cool, dry environment, away from any moisture. Always ensure the packaging remains sealed to maintain its chemical and physical integrity for up to 12 months.

Q: What benefits does Ferrosilicon Nitride provide in refractory applications?

A: It offers very low thermal expansion, high mechanical strength, and outstanding resistance to oxidation and slag attack. These qualities make it highly durable and reliable for blast furnace tap holes, iron troughs, and refractory brick production.

Q: When is Ferrosilicon Nitride typically used in the manufacturing process?

A: Ferrosilicon Nitride is introduced during the preparation of refractory components, tap hole clay mixes, and lining materials, commonly during metallurgical and ceramics production phases for environments exposed to extreme heat or chemicals.

Q: Where is Ferrosilicon Nitride most commonly applied?

A: Its main use is in blast furnace tap hole areas, iron troughs, refractory bricks, and other high-temperature zones within the steel, ceramics, and metallurgy industries due to its strength and stability.

Q: What is the process for packaging and handling Ferrosilicon Nitride?

A: It is packaged in plastic-lined woven bags or jumbo bags in quantities of 25 kg, 50 kg, or as required. During handling, always avoid moisture exposure by keeping the material sealed and stored in recommended conditions.

Q: How does Ferrosilicon Nitride contribute to longevity and efficiency in industrial settings?

A: Due to its chemically stable nature, excellent oxidation resistance, and low porosity, Ferrosilicon Nitride materials maintain their structure longer in harsh conditions, which reduces maintenance frequency and enhances operational efficiency.

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