Silicon Briquette 70% – High-Performance Si 70% FeSi Briquettes for Steelmaking & Foundry
Cost-effective silicon briquette with minimum 70% silicon content. Widely used for deoxidation in steelmaking, nodulizer in ductile iron, and efficient alloy addition.
| Main Composition | Si ≥70.0%, C ≤1.8%, binder system (eco-friendly), custom impurity limits available |
| Form | Briquettes (0.5-5kg, pillow/oval shape), Granules, Crushed lumps, Custom sizes & weights available |
| Application | Steelmaking (deoxidation), Iron casting (nodulizer), alloy addition, slag conditioner |
| Standard | GB/T 2272-2020, ASTM A100, customer-specific specifications |
Silicon Briquette 70% – Product Overview
Silicon Briquette 70% is a high-performance ferrosilicon briquette with a minimum silicon content of 70%. It is produced by blending ferrosilicon powder (or silicon metal fines) with a precisely engineered binder and pressed into dense pillow-shaped briquettes. Our Silicon Briquette 70% offers a clean, consistent composition ideal for ladle additions, converter practices, and foundry applications. It serves as an efficient deoxidizer in steelmaking, a nodulizer in ductile iron production, and a cost-effective silicon source for various metallurgical processes. The briquette form ensures easy handling, minimal dust, and excellent recovery rates.
Product Core Advantages
- Consistent Chemistry: Minimum 70% Si with tightly controlled impurities for reliable performance in critical metallurgical applications.
- Excellent Recovery: Briquette form ensures deep immersion into molten metal, reducing oxidation losses and improving yield.
- Dust-Free & Fluent: Pillow-shaped briquettes are easy to handle, store, and charge with minimal fines generation.
- Cost-Effective: Utilizes fine fractions of ferrosilicon/silicon, offering a more economical solution compared to pure lumps.
- Eco-Friendly Binder: Our proprietary binder system is inorganic, moisture-resistant, and does not introduce harmful elements into the melt.
Typical Application Areas
Silicon Briquette 70% is essential in many industrial processes:
- Steelmaking (Deoxidation): Added to ladle or tundish for efficient killing of molten steel, improving cleanliness and mechanical properties.
- Iron Casting (Nodulizer): Provides silicon for graphitization and nodulizing treatment in ductile and gray iron production.
- Alloy Addition: Used to adjust silicon content in steel and iron grades with high accuracy.
- Slag Conditioner: Helps in modifying slag chemistry for better fluidity and inclusion absorption.
- Foundry Industry: Ideal for cupola and induction furnace additions due to its compact form and high density.
For specific application guidance or custom formulations, contact our technical team for personalized recommendations based on your production requirements.
Technical Specifications – Silicon Briquette 70% & Common Grades
Our Silicon Briquette 70% is produced to meet international standards with strict quality control. Below is the chemical composition of our primary grade (Si 70) compared with other common silicon briquette grades for reference. We also support full customization of Si content, impurity limits, and binder type according to your process needs.
Chemical Composition (Typical Values, % by weight)
| Grade / Designation | Si (%) | C (%) | Al (%) | S (%) | P (%) | Typical Application |
|---|---|---|---|---|---|---|
| Si Briquette 70 | ≥70.0 | ≤5 | ≤2.0 | ≤0.05 | ≤0.05 | Higher Si demand, alloy adjustment |
| Si Briquette 65 | ≥65.0 | ≤5 | ≤2.0 | ≤0.05 | ≤0.05 | General deoxidation, foundry, cost-effective |
| Si Briquette 75 | ≥75.0 | ≤5 | ≤2.0 | ≤0.05 | ≤0.05 | Premium deoxidation, special steels |
| Si Briquette 80 | ≥80.0 | ≤5 | ≤1.5 | ≤0.05 | ≤0.05 | High-grade alloying, precise Si control |
| Custom Grade | Tailored to your specification (Si range, impurity limits, binder type, size, weight) | |||||
Physical Properties
| Property | Value | Unit |
|---|---|---|
| Briquette Weight | 0.05 – 0.1 | kg |
| Bulk Density | 3.0 – 3.8 | g/cm³ |
| Appearance | Black-grey pillow-shaped briquettes | - |
| Compressive Strength | > 50 | MPa |
| Melting Point (approx.) | 1400-1450 | °C |
Available Sizes & Weights
- Standard Briquettes: Pillow shape, 1kg weight (approx. 70x50x30mm)
- Alternative Forms: Crushed briquette granules (5-50mm) available upon request.
- Custom Binder: Organic/inorganic binders to meet melt purity or strength requirements.
Application Guidelines – Silicon Briquette 70%
Silicon Briquette 70% is a versatile material with the following primary applications:
Steelmaking Deoxidation
Added to ladle during tapping or in the ladle furnace to remove dissolved oxygen. Briquettes sink into the melt, providing controlled release of silicon and efficient deoxidation. Typical addition rates: 0.5-2.5 kg/ton steel depending on initial oxygen level.
Iron Casting (Nodular/Gray Iron)
Used to supplement silicon in the production of ductile iron (SG iron) and gray iron. Briquettes can be added to the furnace or treatment ladle to achieve target Si levels without excessive temperature loss.
Alloy Adjustment in EAF / Induction Furnace
Precise silicon adjustment for specialty steels and alloys. The uniform weight of each briquette allows for accurate additions.
Foundry Applications
Ideal for cupola furnaces where lump sizes are critical – briquettes provide consistent density and avoid bridging.
Typical Addition Rates
Addition rates vary based on base S/content and target specification. Our technical team can assist with optimal briquette sizing and charging practices.
Packaging & Logistics – Silicon Briquette 70%
Packaging Options
We offer various packaging solutions to meet different customer requirements and ensure product integrity during transportation:
- 1‑ton Jumbo Bags: Common option, easy to handle with standard equipment.
- 25kg / 50kg Bags: For smaller orders or specific application requirements (e.g., foundries).
- Custom Packaging: We can accommodate special packaging requests, including moisture-proof liners or small drums.
Logistics Information
| Parameter | Details |
|---|---|
| Minimum Order Quantity | 20 metric tons (less for trial orders, subject to availability) |
| Lead Time | 15-20 days after order confirmation |
| Port of Loading | Main Chinese ports (Tianjin, Shanghai, Qingdao, Huangpu) |
| Shipping Options | FOB, CIF, CFR, DAP (depending on destination) |
| Payment Terms | T/T, L/C at sight, or negotiable |
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Access our technical documentation for detailed product information:
Frequently Asked Questions – Silicon Briquette 70%
What is the advantage of using silicon briquettes compared to lumps or powders?
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Briquettes offer several advantages: they are dust-free, easy to handle, and provide consistent weight for precise additions. Their dense form sinks into the melt quickly, improving recovery and reducing oxidation losses. They also allow utilization of fine fractions, making them a cost-effective alternative.
Is it possible to entrust a third-party inspection to check the quality before shipment?
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Certainly, we support third-party inspections by internationally recognized quality inspection agencies such as SGS and BV to verify product quality before shipment. The inspection covers product appearance, weighing, dimensions, and chemical composition analysis. The entire inspection process will be documented with photos and written records, which will be provided to you together with the final inspection report. This ensures you have no concerns regarding product quality.
Can Silicon Briquette 70% be used in all steel grades?
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Yes, Si 70 briquettes are suitable for most carbon steels, low-alloy steels, and some stainless grades. For critical applications requiring extremely low residuals, we can customize the binder and impurity levels. Consult our technical team for specific recommendations.
What binder system do you use? Does it affect melt quality?
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We use a proprietary inorganic binder that is sulfur- and phosphorus-free. It provides high strength during handling but disintegrates rapidly in molten metal, ensuring no negative impact on melt quality or refractory. Custom binder options are available if required.
Do you provide a certificate of analysis with each shipment?
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Absolutely. Every batch of Silicon Briquette 70% is tested in our ISO 17025 accredited laboratory, and a Certificate of Analysis (COA) showing Si, C, Al, S, P, and other elements is provided with the shipping documents.
What is your production capacity for Silicon Briquettes?
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We have an annual production capacity exceeding 30,000 metric tons of silicon briquettes across various grades (65%, 70%, 75%, 80%). We can accommodate both containerized and bulk vessel shipments.
Why Choose Our Silicon Briquette
20+ Years Experience
Specialized in ferroalloy production with deep industry knowledge
Strict Quality Control
Every batch tested to ensure consistent composition and performance
Global Delivery
Reliable logistics network ensuring timely delivery worldwide
Quality & Production Showcase
Explore our quality control process, production facilities, and customer interactions
Different Grades of Silicon Briquettes & SIC Briquettes Comparison
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