High Quality Fire Brick Building Refractory Brick, Expanded Perlite Fireproof Brick

Specifications 1. Low thermal conductivity 2.Size:  230mm*115mm*65/75mm   1. Product specification  Expanded perlite insulation board&perlite fireproof brick is a kind of product with characteristics of non-toxic, odorless, non-combustibility, corrosion resistance, acid-base resistance, insulation, sound and thermal insulation and honeycomb interior structure. It is a white or light-colored superior thermal insulation material made through smashing acid volcano glass lava, screening to a certain granularity, preheating again, and sintering under high temperature of 1400°C. And it can be compounded with different adhesive into hydrophobic perlite insulation board, perlite sound absorption board, partition board, fire proof board, etc.     2. Technical Index Technical Index(expanded perlite&perlite&building material)  

Component Content	SiO2	AL2O3	K2O	Na2O	CaO	MgO
	69-72%	12-18%	3-4.5%	3-4.5%	0.1-0.2%	0.2-0.5%

  3. Main performance for expanded perlite 
Density: 425-900kg/m3 
Anti- bend intensity≥8Mpa 
Compressive strength: 0.35-0.8(Mpa) 
Thermal conductivity≤0.035-0.076W/(m.k) 
Moisture content(%)≤10 
Wet expansion rate(%)≤0.25 
Fireproof limit: 0.6-2h 
Fireproof temperature: 1200c 
Sound-absorption coefficient: 0.03-0.8       4.Company Information  Hebei Vermiculite Product Co.Ltd was founded in the year 2005 and grew to a mature and   professional manufacturer of Vermiculite products.  We have the state of arts in producing  irregular boards of Vermiculite and wall decoration Vermiculite products. 
    5.Packaging   6. Contact us