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
Plastic Refractories
Ready-to-use rammable plastic refractory for burner blocks, patching and monolithic linings
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
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.
Technical Data Sheet, Ramming Masses
Shanker Agencies Pvt. Ltd. · Typical ValuesTypical specification ranges with the applicable test standards. Compiled by Shanker Agencies for ramming masses supplied across India, GCC & ASEAN.
Typical Chemical Analysis
| Property | Typical Value | Test Standard |
|---|---|---|
| SiO₂ (silica grade) | 98.5%+ min | IS 1527 |
| Al₂O₃ (alumina grade) | 85 – 95% | IS 1527 |
| MgO (magnesia grade) | 90%+ min | IS 1527 |
| Boric Acid Binder (silica) | 0.8 – 1.2% | — |
Typical Physical Properties
| Property | Typical Value | Test Standard |
|---|---|---|
| Bulk Density (after sintering) | 2.8 – 3.2 g/cc | IS 1528 Pt-8 |
| Grain Size | 0 – 6 mm graded | Sieve analysis |
| Max Service Temperature | Up to 1650°C | — |
Packaging & Supply: 25 / 50 kg HDPE-lined bags. Silica, alumina and magnesia grades by melt type; sintering schedule supplied.
Disclaimer: Values are typical and compiled by Shanker Agencies Pvt. Ltd. from standard industry data and published specifications of partner manufacturers (CUMI, Calderys, TRL Krosaki, IFGL, Divine Cerawool, Crown Ceramics, Mahakoshal, Saint-Gobain). They are indicative and not a guarantee, confirm the exact grade datasheet before specifying. For a certified datasheet or quotation, contact info@shankeragencies.com or +91 98999 57888.