Acidic Ramming Mass, also known as Silica Ramming Mass, is a high-performance refractory material used primarily in induction furnaces for melting scrap metal. Formulated with high-purity silica and bonding agents, this ramming mass is designed to minimize erosion, enhance thermal shock resistance, and ensure a long-lasting furnace lining. Acidic Ramming Mass is ideal for applications requiring a high resistance to acidic slags and aggressive environments, providing superior protection to furnace walls and extended operational life.
With a high silica content of up to 99.7%, it can withstand temperatures up to 1700°C and resists thermal shock better than alumina or magnesia-based ramming masses. It provides excellent workability and ease of installation, ensuring a reliable and efficient performance in induction melting applications.
Technical Specifications
| Item | Unit | Acidic Ramming Mass |
|---|---|---|
| SiO₂ Content | % | ≥ 99.71% |
| Fe₂O₃ Content | % | Trace |
| Al₂O₃ Content | % | ≤ 0.09% |
| TiO₂ Content | % | Trace |
| CaO Content | % | ≤ 0.04% |
| MgO Content | % | ≤ 0.02% |
| K₂O Content | % | ≤ 0.06% |
| Na₂O Content | % | ≤ 0.04% |
| Bulk Density | g/cm³ | 2.3 – 2.4 |
| Compressive Strength (110°C × 3h) | MPa | ≥ 60 |
| Compressive Strength (1500°C × 3h) | MPa | ≥ 100 |
| Flexural Strength (110°C × 3h) | MPa | ≥ 8 |
| Flexural Strength (1500°C × 3h) | MPa | ≥ 10 |
| Shrinkage | % | 0.08% |
| Permanent Linear Change (1500°C × 3h) | % | ±0.5% |
| Maximum Service Temperature | °C | 1700 |
Key Features
High Silica Content (~99.7% SiO₂): Provides excellent resistance to acidic slags and ensures superior protection for furnace linings.
Thermal Shock Resistance: Superior to alumina and magnesia-based ramming masses, making it ideal for high-temperature and rapid temperature-change environments.
Excellent Compressive and Flexural Strength: Ensures long-lasting structural support under high-load conditions.
Minimal Shrinkage & Low Permanent Linear Change: Offers excellent volume stability and minimal dimensional change during high-temperature service.
Low Porosity & High Density: Provides enhanced wear resistance and ensures longer operational life for furnace linings.
Easy Workability & Vibration Casting: Offers easy installation with excellent workability, ensuring consistent lining performance.
Temperature Resistance: Suitable for temperatures up to 1700°C, ideal for induction furnace applications.
Typical Applications
Acidic Ramming Mass is widely used in induction furnaces for various industrial applications, including:
Coreless Induction Furnaces: For melting scrap metal in steel, iron, and non-ferrous industries.
Foundry Applications: Ideal for furnace linings and other high-temperature casting operations.
Steel Industry: Provides reliable and efficient furnace linings resistant to acidic slags.
Non-Ferrous Metallurgy: Holding and melting furnaces for non-ferrous metals.
Production Details
Raw Materials: High-purity quartzite and silica, bonding agents, and carefully selected additives.
Manufacturing Process: Strict quality control throughout the production stages, including accurate batching, intensive mixing, and consistency verification.
Quality Control: Regular chemical analysis, physical testing, and high-temperature performance verification to ensure superior quality and reliability.
Curing & Drying: Controlled curing and drying processes are critical to achieving optimal strength, durability, and performance.
Packing and Shipping Details
Standard Packing: 25 kg paper bags with moisture-proof inner lining to prevent moisture absorption and degradation.
Bulk Packing: Jumbo bags available upon request for large-scale orders.
Palletizing: Wooden pallets with shrink-wrapped packaging to ensure protection during transportation.
Shipping Methods: Available by sea, truck, or rail, based on customer preferences.
Delivery Form: Dry powder, ready for on-site mixing.
All products are securely packed to prevent damage during transportation and ensure the best possible performance upon arrival.
Frequently Asked Questions (FAQ)
Q1: What is the silica content of Acidic Ramming Mass?
The silica content of Acidic Ramming Mass is approximately 99.7%, providing exceptional resistance to acidic slags and thermal shock.
Q2: What is the maximum service temperature?
Acidic Ramming Mass can withstand temperatures up to 1700°C, making it ideal for high-temperature induction melting applications.
Q3. How much water is needed for mixing?
The recommended water addition is 5.5% – 6.0% for optimal consistency during mixing.
Q4: Can Acidic Ramming Mass resist slag erosion?
Yes, it is specifically designed to offer excellent resistance to slag erosion, ensuring a longer service life for furnace linings.
Q5: What curing and drying procedures are required?
Proper curing and controlled drying are essential to ensure the full strength and durability of Acidic Ramming Mass. Please follow the manufacturer’s guidelines for best results.
