RAMMING MASSES
Dense dry/moist masses for jointless induction furnace linings
PRODUCT OVERVIEW
Ramming masses are monolithic refractories applied by manual or mechanical ramming to form dense, jointless linings. They are the preferred lining for induction melting furnaces, where excellent chemical resistance to the melt is essential and periodic re-lining is required.
KEY PROPERTIES
Application Method
Hand or mechanical ramming
Sintering Required
Yes — gradual heat-up of new lining
Lining Life
100–500 heats (grade-dependent)
Re-lining Speed
4–8 hrs for induction furnace
Water Content
Dry to semi-dry (0–3%)
Key Advantage
No joints — zero melt infiltration
APPLICATIONS
TECHNICAL SPECIFICATIONS
| Grade | SiO₂ | Bulk Density | Application | Max Temp |
|---|---|---|---|---|
| Silica | 95-98% | 1.90 g/cc | Cast iron induction furnace | 1650°C |
| Alumina | — | 2.70 g/cc | Steel induction furnace | 1700°C |
| Magnesia | — | 2.90 g/cc | Basic/alloy steel furnaces | 1750°C |
| Acidic | 88-92% | 1.85 g/cc | Non-ferrous / cast iron | 1600°C |
* Test conditions: IS 1528 (India) / ASTM C-133 / EN 1402. Values are typical — exact data sheets available on request.
AVAILABLE GRADES
INSTALLATION NOTES
- 1
Clean furnace shell and apply one coat of release agent before ramming
- 2
Ram in 50–75 mm layers using the correct pattern (spiral from bottom up)
- 3
Each layer must be uniformly compacted — check with density gauge if available
- 4
For induction furnaces: sinter with a gradual heat-up using scrap metal charge
- 5
First heat: fill with metal charge, heat slowly to operating temperature, do not tap
- 6
Typical sintering cycle: 4–8 hrs at full power to form a glassy bonded shell
WHY BUY FROM SHANKER AGENCIES
Shanker Agencies supplies Calderys ramming masses for all furnace types. We provide installation guidance and sintering programmes specific to your furnace capacity and charge material.
PARTNER BRANDS
FREQUENTLY ASKED QUESTIONS
Ramming mass is a granular dry refractory mix that is rammed in place — typically by pneumatic vibrators — to form a monolithic lining. The most common use is induction furnace linings for melting iron, steel, copper and brass. It is also used for steel ladle bottoms, blast furnace troughs and EAF bottoms.
QUICK INFORMATION
Max Temperature
1700°C
Category
Unshaped Refractories
Grades Available
4 Standard Grades
Industries Served
Brands We Supply
• Calderys India
• Mahakoshal
📦 Quick Delivery
Standard grades in stock — Delhi warehouse. Pan-India delivery in 2–5 days. Same-day dispatch for urgent orders ≤ 2 MT.
MORE IN UNSHAPED REFRACTORIES
Low Cement Castables (LCC)
High-strength castables with 3–5% cement — the industry standard for steel ladles
Ultra Low Cement Castables (ULCC)
Premium monolithics with <1.5% cement for the most demanding high-wear zones
Gunning Materials
Pneumatically applied repair mixes — minimise downtime with in-situ hot repairs
Refractory Mortars
High alumina, fireclay, basic and acid-proof mortars for jointing, finishing and minor repair work
READY TO ORDER OR NEED A SAMPLE?
Our engineers can recommend the exact grade for your application. Sample kits available for trials. No minimum order on standard grades.