SoliBlanket HA-Grade

SoliBlanket HA-Grade

SoliBlanket™ HA-Grade

By increasing the alumina content, based on a Standard RCF, we have succesfully developed a new, unique, spun, Refractory Ceramic Fiber blanket with a classification temperature of 1370°C without the use of Zirconia (ZrO2). This is our SoliBlanket HA.

High Alumina blankets are not new to the market, but a HA blanket produced using the spun fiber technology is unique and results in better thermal insulation and higher strength.

Fiber products containing Zirconia (RCF-Zr), in some countries, is unfavorable and therefore the SoliBlanket HA is the solution. But we also have seen that in atmospheres with higher levels of alkali (for example Aluminium Remelt Furnaces), SoliBlanket HA-grade is more durable and less vunerable for chemical attack.




SoliBlanket HA-Grade

Datasheets, Media & Downloads




SoliBlanket HA-grade is an unique product which is only offered by Vulcor Insulation. In normal production operations a spun fiber with such high alumina contents would be hard to manufacture. Typically, these type of high alumina blankets are offered in a ‘blown’-fiber technology which create a high shot, and pretty low quality blanket. Utilizing our unique Ultra Low Shot technology we have been able to offer you this new product in a much improved version to what has been supplied in the market today.

The high classification temperature is the result of the high alumina content of the fiber. The SoliBlanket HA-grade has a classification temperature of 1370°C and is engineered to perform in a wide range of applications up till 1200°C continuously.

The Soliblanket HA-grade is stronger, feels more comfortable to handle and provides better thermal insulation than ‘blown’ fibers in a similar chemical composition. During installation our ULS technology fiber products offer a higher resiliency after compression, which is particularly important when making fiber modules or in case the blanket (strip) is installed perpendicular to the main fiber orientation, or in easier words; stack(bonded).

SoliBlanket HA-grade is part of the SoliBlanket product range. With a variety of four Refractory Ceramic Fiber (RCF) grades and the famous ‘ULS’ Low Bio Persistence Fiber grade we are offering one of the most extensive ranges of high temperature fiber blankets in the market today. With our  different chemical compositions we are able to provide a solution to nearly every atmosphere or temperature.


  • Proven technical solution
  • Low shot technology
  • Excellent insulation performance
  • High handling strength
  • Unaffected by most chemicals
  • Excellent thermal stability
  • Resistant to thermal shock

Typical applications

  • Thermal insulation for furnace lining
  • Insulation lining for aluminium remelt furnaces
  • Thermal insulation for the Petrochemical Industry replacing RCF-Zr blankets
  • Blanket for module making
  • Furnace lining in Ceramics and Glass
  • General technical insulation of furnaces and technical installations.


Blanket from high temperature Refractory Ceramic Fiber insulation wool.

Temperature range

SoliBlanket HA-grade has a classification temperature of 1370°C and advised for maximum continuous use at 1200°C.

The maximum continuous use temperature provided on the website is a guideline and only applicable in a clean oxidizing atmosphere.

Product range

SoliBlanket is part of an extensive product range supplied by Vulcor Insulation. Vulcor Insulation is supplying insulation solutions from cryogenic to high temperature applications. All products offered by Vulcor are manufactured in house or sourced from exclusive trusted third party partners.

Technical support

Vulcor Insulation provides specifiers and customers with guidance on all aspects of the materials selection for their application, the installation and compliance with relevant regulations and performance standards.

For additional information about product performance, or to identify the recommended product for your application, please contact the team at Vulcor Insulation.


All SoliBlankets in the special grade product range are available in the most popular densities and dimensions. Available in 96 and 128 kg/m3 density and a thickness range from 13 to 50 mm. All products have been developed to meet requirements specific to the final application.

SoliBlanket is standard supplied in shrink wrap plastic film, and can be supplied in carton boxes. The blankets in shrink wrap are placed on a heat treated export pallet with 24 rolls per pallet. Please refer to list below for availability of densities and dimensions.


Length (mm) Width (mm) Thickness (mm) 96 kg/m3 128 kg/m3
14640 610 13 O
9760 610 19 O
7320 610 25 X X
4880 610 38 O O
3660 610 50 X X
Standard item X
On request O


Properties measured Standard Unit SoliBlanket HA-grade
Grade RCF
Colour white
Classification temperature °C 1370
Continous use temperature °C 1200
Density kg/m3 96 128
Tensile strength EN 1094-1 kPa 65 90
Permanent Linear Shrinkage EN1094-7 %
@1200°C < 2
Thermal conductivity ASTM C-201 W/mK
@200°C 0,07 0,06
@400°C 0,11 0,09
@600°C 0,15 0,13
@800°C 0,22 0,19
@1000°C 0,31 0,28
Chemical composition ISO12677 %
SiO2 49 - 52
AI2O3 48 - 51
Fe2O3 < 0,1
Other < 0,25