Beijing North Refractories Co., Ltd.

HIGH DENSITY (850 KG/M3  810KG/M3 , 1040 KG/M3 ) REFRACTORY CALCIUM SILICATE BOARD
(N-17, N-14, NR-80, NR-85, NR-110, NR-130,NR-95 , NR-60 ) 

REFRACTORY INSULATING BOARDS AND MACHINED COMPONENTS FOR NON FERROUS MOLTEN MEATAL CASTING AND MACHINE INSULATION GASKETS

CARBON FIBER REINFORACE &  GLASS FIBER REINFORCED

NORTH REFRACTORIES manufactures and offers different grades and types of technically advanced calcium silicate insulating refractory boards for molten metal and machine parts insulation applications. 

These non-asbestos materials are available in sheets or as precision machined components. NORTH REFRACTOIRES are equipped with CNC tooling equipment to produce components to customer specifications and drawings. 


BENEFITS 

• Asbestos-free 
• Low thermal conductivity 
• Thermal shock resistant 
• Non-wetting 
• Excellent machining characteristics


APPLICATIONS 
• Machined spouts (dip tubes) 
• Billet/ingot floats 
• Continuous sheet caster tips 
• Transition plates and headers 
• Orifice plates for horizontal casters 
• Trough liners 
• Insulated riser inserts 
• Continuous caster head boxes 
• Molten metal dams 
• Baffle plates 
• Furnace linings
• Industrial machine insulation parts
• Pipe insulated support • Ladle Insulation Linings

NORTH REFRACTORIES produce a wide ranges of calcium silicate boards, pipes and special shapes for pertrochemical industry, foundry industry, metallurgy industry etc.   Temperature is 650°C, 1000°C, 1100°C etc.

Density as low as 170 kg/m3 ,   middle density boards will be 300-600 kg/m3, high density high strenght non wetting aluminum boards will be 700 -1300 kg/m3.    we can make the special shapes by CNC according to your drawings.

Calcium silicate board is an asbestos-free excellent thermal insulation product that can withstand continuous 1000°Coperating temperature, which was made from xonotlite by thermoplastic reaction, then mixed with inorganic glass fiber to reinforce the strength. It is also a hydrophobic energy saving product widely used in industrial insulation field.

Standard size: 600x300mm, 610 x300mm, 1000 x 500 mm, 1200 x 60mm 
Thickness: 20 - 120 mm
Temperature limitation: 1000°C. 1100°C , 650°C
Density: 200- 600kg/m3  

Characteristics of calcium silicate board

1.Super light weight,
2.Lower  thermal conductivity compared with other massive hard refractory insulation materials
3.High rupture and compressive strengths
4.Easy to install,
5.Reliable and durable.
6.Heat resistance and Non-deformation within the working temperature range
7.Non-corrosiveness to piping and equipment
8.Long service life
9.Asbestos free
10.Waterproof 

 

Typical application of calcium silicate board
Calcium silicate board was mainly used as insulation for thermal equipment and piping in the power, chemical, metallurgy, petrochemicl, textile and light industries as well as insulation for buildings, industrial furnaces and deck of ship.

Calcium silicate board physical & chemical data

ITEM
Unit                                                                           NR-20                        NR-23                          NR-25                        NR-27
Bulk density    kg/m3                                       200±10%                  230±10%                    250±10%                  270±10%
Flexural Strength  Mpa                                     ≥0.35                          ≥0.45                           ≥0.50                          ≥ 0.55
Cold crushing strength  Mpa                          ≥0.60                         ≥0.80                             ≥0.90                          ≥1.00 
(at 5% deformation room tem)
Service Temp. Limit °C                                     1000                             1000                              1000                         1000
Linear Shrinkage  %                                      ≤2 (1000,16hrs)         ≤2 (1000,16hrs)          ≤2 (1000,16hrs)    ≤2 (1000,16hrs)
Compression strength at 10%    Mpa      0.32                              0.40                                0.45                            0.5
porosity  %                                                        90.8                                90.8                              90.8                           90.8

Ceramic Fiber Blankets  ( 1260°C, 1350°C, 1430°C, 1600°C ) 
Ceramic Fiber Boards ( 1260°C, 1430°C, 1600°C, 1700°C, 1800°C, 1900°C ) 
Ceramic Fiber Papers and Modules ( 1260°C -1430°C )
Soluble Insulation Products ( AES blankets, AES boards and papers )
Please contact us for more details,  Email:   ricksun@northrefractories.com       Whatsapp: 008613810560390

Typical Application of NR Ceramic fiber blanket
High temperature pipe and casting mold insulation.
Repair, insulation and linings for furnaces, kilns, ovens, generators, reformers, boilers,
Duct and turbine insulation- Forging furnaces linings- High-temperature seals and gasket
Furnace door seals -Glass furnace crown insulation -Heat processing equipments
Car bottom furnace lining insulation  -Fire protective insulation or linings

NR Ceramic fiber blankets characteristics
Double needled blanket  -Low density   -Low thermal conductivity  -Shorter heat up and cool down time
Resilience and resistance to thermal shock  -Flexible and easy to cut and install
Contain no organic binder  -Asbestos free

Standard   Density :  4, 6, 8 lbs./cu. ft. (64, 96, 128 kg/m3)
Standard Thickness: 1/2″, 1″, 1-1/2″, 2″ (12.5mm, 25mm, 38mm, 50mm)
Standard Width: 24″ and 48″ (610mm and  1220mm)
Standard  Packaging: In plastic bags and then in cartons Or  pp woven bags.
Delivery Time: General condition within 15 days
Temperature Grades: as per requested.

NRWool Ceramic Fiber Blankets have excellent chemical resistance. The only exceptions are Hydrofluoric and Phosphoric acid. NRWool Ceramic Fiber Blankets can be manufactured in densities of 4#, 6#, 8#. The thickness of NRWool Blankets are ½”, 1”, 1½” and 2”.  Special sizes and lengths are available upon request.