Silicon Carbide 70% & 80% Lump and Granules
High-quality metallurgical silicon carbide available in 70% and 80% grades for cast iron production, furnace treatment, and various metallurgical applications.
Product Overview
Silicon Carbide 70% and 80% grades are essential metallurgical materials used in processes requiring simultaneous silicon and carbon addition. Available in lump or granular forms to suit different furnace types, charging systems, and distribution requirements.
Product Specifications
| Item |
SiC 70% |
SiC 80% |
| SiC Grade |
70% |
80% |
| Form |
Lump or granules |
Lump or granules |
| Main Function |
Silicon and carbon addition |
Silicon and carbon addition |
| Cast Iron |
Applicable |
Applicable |
| Furnace Treatment |
Applicable |
Applicable |
| Metallurgical Processing |
Applicable |
Applicable |
Grade and physical form are separate purchasing parameters and should be specified independently.
Chemical Composition
The 70% and 80% values represent different SiC purity grades. Buyers should specify required SiC content and any limits for free carbon, oxide impurities, sulfur, phosphorus, iron, and moisture.
Size and Form Options
Lump Material
Ideal for suitable furnace charging and applications requiring coarser material distribution.
Granules
Perfect for applications requiring more controlled particle distribution and precise metering.
Commonly available sizes include 0-10 mm, 1-10 mm, and 10-50 mm ranges depending on specific metallurgical requirements.
Key Characteristics
- Dual Element Source: Provides both silicon and carbon to cast iron and steelmaking processes
- Furnace Treatment: Physical form determines introduction and distribution methods in furnace operations
- Cast Iron Conditioning: Affects carbon/silicon levels and influences solidification and graphite precipitation behavior
Primary Applications
- Cast Iron Production: Gray and ductile iron production as combined silicon and carbon source
- Induction Furnace: Suitable particle sizes for charge preparation or furnace melting
- Cupola Furnace: Lumps or briquettes following established charging practices
- Metallurgical Furnace Treatment: Silicon and carbon addition during furnace processing
Product Comparison
| Factor |
SiC 70% Lump |
SiC 70% Granules |
SiC 80% Lump |
SiC 80% Granules |
| SiC Grade |
70% |
70% |
80% |
80% |
| Form |
Lump |
Granules |
Lump |
Granules |
| Si/C Addition |
Yes |
Yes |
Yes |
Yes |
| Cast Iron |
Applicable |
Applicable |
Applicable |
Applicable |
| Main Selection Factor |
Coarser charging |
Particle distribution |
Grade + charging |
Grade + distribution |
Technical Specification Requirements
For optimal performance, specify: SiC grade, lump or granular form, particle-size range, chemical impurity limits, furnace type, charging method, target Si level, target C level, and required quantity.
Buyer Specification Checklist
| Requirement |
Buyer Information |
| Grade |
SiC 70% or 80% |
| Form |
Lump or granules |
| Size |
Required range |
| Application |
Cast iron / furnace treatment |
| Chemistry |
SiC and impurity limits |
| Quantity |
Required quantity |
| Packing |
Required packaging |
| Destination |
Port / country |
| Documents |
COA, SDS, inspection documents |
| Delivery |
Required delivery conditions |
Quality Assurance
Buyer specifications should identify both chemical grade and physical form. Certificate of Analysis (COA) documentation reports agreed chemical analysis for supplied lots as part of commercial agreements.
Packing & Delivery
Packing solutions match particle size and handling equipment requirements. Bulk bags and heavy-duty industrial bags are standard for metallurgical raw materials transportation.
Frequently Asked Questions
What is the difference between SiC lump and granules?
The main difference is physical form and particle-size distribution. Selection depends on furnace charging and material-distribution requirements.
What is SiC 70% used for?
Metallurgical silicon and carbon source in foundry and furnace applications.
What is SiC 80% used for?
Silicon and carbon addition and metallurgical treatment where 80% SiC grade is specified.
Can SiC be used for cast iron?
Yes. Metallurgical SiC is used in cast-iron production and affects silicon, carbon and graphite-related metallurgical behavior.
What sizes are commonly supplied?
Standard references include 0-10 mm, 1-10 mm and 10-50 mm grades depending on application requirements.
Which form should I select?
Consider furnace type, charging equipment, desired distribution and reaction requirements.
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