Description
Acidic, Neutral and Alkaline Ramming Mixes are widely used in medium-frequency furnaces as lining materials for melting:
Cast Iron: Gray iron, ductile iron, malleable iron, compacted graphite iron (CGI), and cast iron alloys.
Steel: Carbon steel, alloy steel, high-carbon steel, tool steel, heat-resistant steel, and stainless steel.
Non-Ferrous Metals: Aluminum & alloys, copper (red brass, yellow brass, cupronickel, bronze), etc.
Composition
Primarily made of quartz sand with multi-grade particle sizing.
Pre-mixed dry formulation for immediate use without stirring, reducing drying/sintering time.
Product Advantages
- Slag-free & crack-resistant lining.
- Moisture-proof: Unaffected by humidity during storage.
- Easy repair & exceptional erosion resistance, extending furnace lifespan.
- Economic efficiency: Significantly reduces operational costs.
Performance
- ZG1 Ramming Mix
For carbon steels (e.g., 45# steel), high-manganese steel, high-chromium steel, and specialty steels.
Achieves 120+ heats (up to 195 heats under optimal conditions).
- ZH2 Ramming Mix
Optimized for gray iron melting.
Delivers 300+ heats (up to 550 heats).
Parameter
| Item | HDD-1 | HDD-2 | HDD-3 | HDD-4 | |
|---|---|---|---|---|---|
| SiO2 | % | 98 | 98 | 98.5 | 98.5 |
| SiC | % | - | - | 5 | 5 |
| Crushing strength | MPa | 55 | 55 | 60 | 60 |
| Modulus of rupture | 1450℃×3h | 15 | 15 | 16 | 16 |
| Permanent linear change | % | -0.3~+0.5 | -0.3~+0.5 | -0.5~+0.5 | -0.5~+0.5 |
| Bulk density | g/cm3 | 1.95 | 1.9 | 1.95 | 1.9 |
| Refractoriness | ℃ | 1700 | 1750 | 1700 | 1750 |
