Refractory Grade Ferro Silicon Nitride For Taphole Clay
Refractory Grade Ferro Silicon Nitride for Taphole Clay
Refractory Grade Ferro Silicon Nitride, also known as FeSiN or Ferrosilicon Nitride, is a silicon-nitrogen ferroalloy additive used in blast furnace taphole clay, refractory mixes and ironmaking lining materials.
Zhen An supplies Refractory Grade Ferro Silicon Nitride for Taphole Clay in powder, granules and customized particle sizes, with batch COA and third-party inspection accepted before shipment.
Technical Specifications of Refractory Grade Ferro Silicon Nitride
The following data is a common reference range for Refractory Grade Ferro Silicon Nitride. Final values should be confirmed by batch COA and customer formulation requirements.
| N | Si | Fe | Bulk density(g.cm-3) |
| ≥ | |||
| 28%-31% | 47%-52% | 12%-17% | 3.6 |
| Chemical composition and size above can be optimized according to customers' requirements. | |||
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Application of Refractory Grade Ferro Silicon Nitride
In blast furnace taphole clay, one common pain point is erosion caused by molten iron and slag flow. The taphole area is repeatedly exposed to high-temperature liquid flow, and weak refractory structure may be washed out too quickly. Ferro Silicon Nitride helps reinforce the refractory matrix and supports erosion resistance when the formulation is properly designed.
Another issue is thermal shock during repeated tapping and plugging. Taphole clay experiences rapid heating and cooling, which can lead to cracking or structural weakening. FeSiN can support thermal shock stability by improving the high-temperature integrity of the refractory mix.
A third problem is unstable service performance between batches. If the FeSiN particle size, oxygen level or moisture changes from one shipment to another, the taphole clay producer may need to adjust the formulation repeatedly. Stable Ferro Silicon Nitride helps reduce this uncertainty and supports more predictable production.
For buyers, this means FeSiN should be selected as a formulation material, not just as a chemical powder. Its value depends on whether it fits the taphole clay recipe and service condition.
Packing, Shipment and Quality Verification
For Refractory Grade Ferro Silicon Nitride, proper packing helps reduce moisture absorption, powder leakage and contamination during storage and long-distance transportation.
Zhen An can supply 25kg bags, 1 MT jumbo bags, inner PE liner packing, pallet packing or customized export packing according to particle size and order quantity. For fine powder used in taphole clay and refractory mixes, moisture-proof packing is recommended.
Before shipment, we can check key indicators such as N, Si, O, C, moisture and particle size distribution. Batch COA can be provided, and third-party inspection by SGS, BV, Intertek or other recognized agencies is accepted before shipment.
About Us
ZHEN AN INTERNATIONAL CO.,LIMITED
ZHEN AN supplies Refractory Grade Ferro Silicon Nitride, ferrosilicon, silicon metal, silicon carbide, silicon calcium alloy, cored wire and other metallurgical and refractory materials.
For Ferro Silicon Nitride for taphole clay, Zhen An focuses on stable N/Si content, controlled particle size, low moisture and export-ready packing. Since FeSiN performance depends on refractory formulation and service conditions, we suggest buyers confirm particle size, application and inspection requirements before ordering.
Batch COA can be provided, and third-party inspection is accepted before shipment according to buyer requirements.
FAQ
Q: What particle size is recommended for taphole clay applications?
A: For taphole clay production, commonly used Ferro Silicon Nitride sizes include 200 mesh, 325 mesh and 0–1mm. Fine powder grades are often selected because they can mix more evenly with other refractory raw materials and improve dispersion in the formulation.
Q: Is Ferro Silicon Nitride different from ordinary ferrosilicon?
A: Yes. Ordinary ferrosilicon is mainly used in steelmaking as a silicon source and deoxidizing alloy. Ferro Silicon Nitride, or FeSiN, contains nitrogen-bearing silicon compounds and is mainly used in refractory materials to improve high-temperature strength, erosion resistance and service stability.
Q: What information should buyers confirm before purchasing FeSiN?
A: Before ordering Ferro Silicon Nitride, buyers should confirm the required nitrogen and silicon content, oxygen level, moisture, particle size, application type and packing method. Batch COA is also important for checking whether the delivered material matches the agreed specification.
Q: Can Zhen An support COA and third-party inspection?
A: Yes. Zhen An can provide batch COA for Ferro Silicon Nitride shipments. If buyers need independent verification, third-party inspection such as SGS, BV, Intertek or other recognized agencies can be arranged before shipment.
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