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Ruinuo Filling and Sealing Material (Type III) – Inorganic Foaming Material for Mine Backfill Sealing and Fire Prevention in Underground Coal Mines
This product is a completely inorganic mineral powder material. For use, it is directly mixed with more than 2 times its weight in water at an appropriate ratio and applied through a specialized grouting pump. The product features short setting time, powerful foaming capability, stable non-shrinking foam consolidation, excellent deformation adaptability, and long-distance pumping performance. The construction process is simple and easy to implement.
This product has obtained a national invention patent (Patent No.:ZL201810941861.X).
Cross-section photo of foamed product after solidification
Product Features
Powerful rapid foaming with stacking capability
Cost-effective per unit volume filling
Non-toxic, odorless, pollution-free and non-corrosive
Flame-retardant and safe
Quick and simple construction
Scope of Application
Large-volume filling for various types of roof fall areas, cavities, and behind-support spaces in underground mines
Filling and sealing of upper and lower corners
Filling, sealing, and support for temporary closure walls
Filling and sealing of underground fire or high-temperature zones


Backfilling of abandoned mine workings in an underground mine Photo of pumped slurry material
Product technical parameters
Property
Specification
Appearance
Gray powder
Water/Material Ratio (by weight)
2:1~2.5:1
Material Consumption (kg/m³)
60~80
Foam Expansion Ratio
10~12 times
Gelation Time after exiting pipe (s)
40~60 (or adjustable as needed)
Compressive Strength (MPa)
0.1~0.4
The above data are obtained from laboratory tests on product samples; actual performance may vary depending on specific application conditions.
Storage and Packaging
The product is vacuum-sealed in 25 kg moisture-proof bags (non-recyclable packaging).
Store in a dry, cool, and well-ventilated area. Direct sunlight and water exposure are strictly prohibited. Maintain storage temperature between 0-35°C. Shelf life: 6 months from date of manufacture.

Product Patent Photo Product Palletizing Photo