Refractory Ramming Mass

What is refractory ramming mass meaning? Refractory ramming material is made by mixing refractory aggregates and powders, binders and admixtures proportionally. Moreover, we usually use the mechanical tamping method for construction. In addition, ramming materials are often used as fillers in induction furnaces, heating furnaces, heating furnace linings and converter linings.

  • MgO(≥): 11% – 96%
  • Al2O3(≥): 1.5% – 90%
  • Bulk Density: 1.90g/cm3 – 3.15g/cm3
  • Max Working Temperature(≥): 1400℃ – 1800℃

Kerui Refractory Ramming Mass

Parameter of Refractory Ramming Mass

Tips: this table is formulated concerning Chinese refractory industry standards. Contact us or follow us on Pinterest for more information.

Item/GradeQuartzMagnesiaAlumina Magnesia SpinelCorundumMulliteMagnesia Alumina Spinel
ω (MgO)/%/≥9611-32//75
ω (Al2O3)/%/<1.565-8890>8022
ω (CaO)/%//1///
ω (SiO2)/%98<21/<16/
Bulk Density (g/cm³)1.9-2.22.85-2.92.95-3.152.95-
Max Working Temperature/℃165018001800180014001800

3 Types and Uses of Refractory Ramming Mass

Silica Ramming Mass

The main raw material of Siliceous ramming mass is high-purity quartz sand. Its main features include high temp resistance, corrosion resistance and good chemical stability. We mainly use it for the working lining of induction furnaces for melting and insulating cast iron and cast steel, filling the gaps and leveling layers of high-temperature masonry.KERUI Silica Ramming Mass

AZS Ramming Mass

AZS ramming material is a composite material composed of alumina (Al2O3), zirconia (ZrO2) and silica (SiO2). So, it has excellent fire resistance and chemical stability. Besides, customers can use it as the high temperature lining or sealing layer, especially under the bottom of fused cast zirconium corundum pool paving tiles (75m~120m).KERUI AZS Ramming Mass

Magnesite Ramming Mass

Magnesium premix ramming mass is made of raw materials such as light burnt magnesium or fused magnesium. Therefore, it has good corrosion resistance and high temp resistance like cheap refractory cement. You can use it in various working linings. For example induction furnace linings, ultra-high-power electric furnace bottoms and continuous steel ladles.KERUI Magnesia Ramming Mass

Refractory Ramming Mass Manufacturing Process

azs ramming

Ramming Material

Raw Material Preparation

Firstly, firebrick manufacturers select high-purity raw materials according to the ramming mass composition and formula. Such as quartz sand, light-burned magnesia powder, alumina, etc. Then, prepare various raw materials according to the proportions.

Mixing and Ingredients

Secondly, mix various raw materials evenly according to a certain proportion to ensure an accurate ingredient ratio. Because this can ensure the stability and reliability of product performance.

Wet Mix Preparation

Then, wet mix the mixed raw materials with a certain proportion of binding agent to fully combine them. In this way, the raw materials will form a certain bonding force and prepare for subsequent molding.


Then, like making refractory cement, we put the wet mixed raw materials into the mold for shaping. Furthermore, Kerui ramming mass plants can press, vibrate or pound them into products of specific shapes and sizes.


This step is to dry the formed product to remove moisture and improve the density of the product. Moreover, the Kerui ramming mass manufacturer usually dries it in a drying chamber.


Furthermore, the dried product is put into a kiln for high-temperature sintering to make it more firmly bonded. This improves the fire resistance and erosion resistance of the refractory ramming material.

Inspection and Packaging

Finally, we need to inspect the quality of the sintered refractory ramming material. We will check whether the appearance and performance of the product meet the requirements. Then, we package and store the qualified products, waiting for shipment from the factory.

KERUI Product Flow of Unshaped Refractory

Why Choose Kerui Refractory Ramming Mass Suppliers?

Reasonable Price

Kerui Refractory can effectively control production costs and provide cost-effective products. So, customers get competitive prices without sacrificing quality. In other words, we can reduce production costs and improve economic benefits for our customers.

Strong Production Capacity

Kerui has strong production capabilities and can meet the needs of different customers. Whether customers need large batches of ramming material or small batches of dense castable, Kerui can deliver them on time. Moreover, we also ensure consistency in product quality.

Timely Delivery

We focus on production planning and logistics management and are able to arrange production and shipment in a timely manner. In addition, Kerui maintains close communication with customers to ensure that customers receive refractory products on time.

Perfect After-Sales Service System

We have established a complete after-sales service system. This includes providing services such as technical support, product consulting and after-sales maintenance. Therefore, Kerui can promptly solve the problems customers encounter when using refractory material.

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Kerui Refractory has rich refractory raw materials and more than 20 years of experience in manufacturing refractory ramming materials. Moreover, Kerui can provide multiple specifications, multiple categories, competitive prices and high-quality dry refractory ramming mass. Promotions are in progress, welcome everyone to inquire and purchase!

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