Ferrosilicon Nitride

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Product Code : 11

Product Description

Ferrosilicon nitride takes Si3N4 as essential component, accompanying with free iron, non-nitrided ferrosilicon and other mixture. White commercial ferrosilicon nitride for fire retardance is grey white (or dark brown) powder, and ferrosilicon nitride for steelmaking is grey white grains.

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 (%)	Si₃N₄	Si	N	Fe	Al+Ca
Element Content	75~80	47~51	30~33	12~16	<2.5
Element Content	70~75	49~52	28~30	12~16	<2.5
*. Granularity Distribution
(1) Powder Product (%)
Grain diameter	-45 Âµm	-45Âµm~-75Âµm	+75Âµm~-150Âµm	+150Âµm~-75Âµm
Fine Powder	>80	5~1.5	<3
Common Powder	70~80	10~20	8~15	<3
Coarse Powder	60~70	10~16	10~16	<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.