Zhengzhou Zhongkeda Refractory Materials Co., Ltd
Ramming Mass
Ramming Mass for Furnace Lining
High-Quality Acidic, Basic & Neutral Grades | Direct Manufacturer | Global Supply
Refractory ramming mix is a type of monolithic refractory material that is compacted and shaped through external forces (manual or mechanical ramming and vibration) and hardens upon heating above room temperature. It is classified into three types: acidic, neutral, and basic. High-quality raw materials such as high-alumina bauxite, corundum, spinel, fused magnesia, and high-purity magnesia are used as the primary components. Various binders and specially formulated fine powders are added and precisely blended to achieve the desired properties.
Characters of Refractory Ramming Mass:
•🔥High-Temperature Stability: Wide temperature resistance range (1000°C–1800°C) with excellent thermal shock resistance (withstanding cyclic temperature variations of ≥500°C without cracking).
•🪨High Density: Achieves low porosity (≤15%) through ramming or vibration compaction, effectively resisting penetration by molten metal and slag.
•🧪Chemical Corrosion Resistance: Resistant to acidic and alkaline gases as well as slag corrosion, with silicon carbide and carbon-based ramming mixes offering superior erosion resistance.
•🛠️Flexible Application: Suitable for both manual and mechanical installation, making it ideal for complex shapes such as furnace bottoms, corners, and pipe linings.
•⚡Rapid Repair: Does not require high-temperature baking—can cure at room temperature or with low-temperature heat treatment, minimizing equipment downtime.
Typical Applications of Refractory Ramming Mass:
•🏭Iron and Steel Metallurgy: Electric arc furnace, ladle, blast furnace hearth
•🔶Non-ferrous Metal Smelting: Aluminum melting furnace, copper converter, zinc reverberatory furnace
•🥃Glass Industry: Glass melting furnace, forehearth
•⚗️Chemical/Power Industry: Gasifier, waste incinerator, boiler
•🛠️Foundry Industry: Induction furnace, pouring trough
Types of Ramming Mass：
Parameters of Refractory Ramming Mass:
Type
Main Component
Max Working Temp.
Application
Acidic Ramming Mass
SiO₂ ≥ 99%
≤1700°C
Induction furnaces, ferrous foundries
Basic Ramming Mass
MgO ≥ 80%
≥1750°C
Electric arc furnace bottoms, steel ladles
Neutral Ramming Mass
Al₂O₃ / Mg-Al Spinel
1600–1750°C
Aluminum melting, steel converter linings
Silicon Carbide Ramming Mass
SiC ≥ 70%
1600–1750°C
Waste incinerators, coke oven floors, boilers
High Aluminum Ramming Mass
Item
AM-1
AM-2
Working Temperature(℃) ≥
1750
1750
Al2O3(%) ≥
85
89
MgO(%) ≥
11
8
Cr2O3(%) ≥
1.5
2
Bulk Density(g/cm3) ≥
3.1
3.15
Sintering Temperature(℃) ≥
1600
1650
Silica Ramming Mass
Item
SM-1
SM-2
Refractory(℃) ≥
1600
1750
Component
SiO₂(%)
98.5
/
SiO₂+Cr2O3(%)
/
99.3
Bulk Density(g/cm3) ≥
2.1
2.3
Compressive Strength(MPa)
11
15
Sintering Temperature(℃) ≥
800
950
Particle Size(mm)
0-8
0-25
Magnesia Ramming Mass
Item
MRM-1
MRM-2
MRM-3
Max Temperature(℃)
1815
1815
1800
Component
MgO, %
30.5
74.8
97
Al2O3, %
67.6
22.7
/
SiO2 , %
0.1
0.6
0.8
Bulk Density(g/m3)
3.08
2.98
3
FAQ:
Corundum Ramming Mass
Item
CRM-1
CRM-2
Working Temperature(℃) ≥
1750
1750
Al2O3(%) ≥
85
89
MgO(%) ≥
11
8
CrO3(%) ≥
1.5
2
Bulk Density(g/cm3) ≥
3.1
3.15
Sintering Temperature(℃) ≥
1600
1650
Q:What is ramming mass used for?
A:Ramming mass, also known as refractory ramming mix, is used for lining induction furnaces, coreless furnaces, electric arc furnaces, and non-ferrous melting units. It creates a dense, high-temperature-resistant barrier to protect the furnace shell from slag and metal corrosion.
Q:What is the typical grain size of refractory ramming mass?
A:The grain size is usually 0–5 mm and can be tailored according to your technical requirements. Uniform grading improves packing density, strength, and thermal conductivity.
Q:How is ramming mass installed?
A:It is installed by manual or pneumatic ramming, layer by layer. No sintering is needed. After ramming, the mass is air-cured for 24 hours before furnace preheating.
Q:Do you offer customized ramming mass formulations?
A:Yes. As a manufacturer of ramming mass, we offer custom compositions, binder systems, and grain distributions to suit various furnace conditions and project needs.
Q:Is ramming mass suitable for high-temperature applications?
A:Yes. Depending on the type, ramming mass can withstand up to 1750°C, making it ideal for high-temperature industrial furnaces in steel, aluminum, glass, and foundry industries.
Q:Do you supply ramming mass in bulk for export?
A:Absolutely. We supply bulk quantities in 25kg bags, 1-ton jumbo bags, and can assist with container loading plans for efficient shipping worldwide.
Q: What documents do you provide with the shipment?
A: We provide:
• Technical Data Sheet (TDS)
• Material Safety Data Sheet (MSDS)
• Certificate of Analysis (COA)
• Packing list, invoice, and origin certificate (if needed)
Q:Can I get a free sample of ramming mass for testing?
A:Yes, we provide free samples (1–5kg) for lab or trial furnace testing. International shipping charges may apply based on destination.
