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Rock wool board

Hard rock wool board

Xiaolong Longyan cotton board is an inorganic thermal insulation material, which is made of iron slag as the main raw material, melted and cooled by high-pressure steam injection. It has the advantages of light weight, small thermal conductivity, good elasticity, non combustion, non moth, non decay and chemical stability. It also has excellent sound insulation performance. In addition to the general active structure of heat preservation and insulation, rock wool board is more widely used in various fire and sound insulation places.

Performance characteristics of rock wool board:
1. Thermal insulation performance: good thermal insulation performance is the basic characteristic of rock wool and slag wool products. Under normal temperature (about 25 ℃), the thermal conductivity of rock wool is usually between 0.03-0.047w / (Mok).
2. Combustion performance: the combustion performance of rock wool and slag wool products depends on the number of combustible adhesives. Rock wool and slag wool are inorganic mineral fibers, which are not combustible. In the process of processing products, sometimes organic binders or additives are added, which will have a certain impact on the combustion performance of products.
3. Sound insulation performance: rock wool and slag wool products have excellent sound insulation and sound absorption performance. The sound absorption mechanism is that the products have porous structure. When sound waves pass through, friction occurs due to the effect of flow resistance, so that part of the sound energy is absorbed by fibers, which hinders the transmission of sound waves.
Elastic, medium strength rock wool board: suitable for building wall / roof insulation, fire protection, sound absorption, such as curtain wall, interior wall partition, elevator shaft, etc.
High strength rock wool board: it is suitable for various conditions of high and low temperature, with good bearing and compression characteristics, especially for the heat preservation and insulation of large ships, containers, ovens, pipelines and industrial equipment.
Pressure resistant rock wool board: can bear huge high load. It is suitable for roof insulation of waiting room and large workshop.

Technical performance

Technical guidance


Thermal conductivityW/(m.k)


Normal temperature

Slag ball content% (particle diameter > 0.25mm)

12 below


No combustible



fiber diameter(μ)


working temperature (℃)


Acidity coefficient




Moisture absorption rate(%)

< 5


Density tolerance(%)


Resin content

Rock wool board≯3
  Rock wool felt≯1
  Rock wool tube≯3.5





Application scope
Thermal insulation, sound absorption and noise reduction of equipment in petroleum, power and chemical industries
Building industry - heat insulation, sound absorption and noise reduction of building partition wall, curtain wall, roof and enclosure
Industrial and mining industry - industrial kiln, oven, large diameter storage tank, thermal insulation and fire protection of ships, etc

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