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Vermiculite Board
Application:
Phone: +8615138766787
Email: irenewang@lyshxcl.com
Description
Introduction
Vermiculite board is a lightweight, 100% inorganic insulation panel made from high-purity expanded vermiculite combined with inorganic binders, formed through cold-pressing and drying/curing processes. The unique flake-like, layered micro-structure of expanded vermiculite gives the board excellent thermal insulation, fire resistance, and chemical corrosion resistance — making it especially effective in resisting fluoride gas and cryolite-alumina molten salt attack inside aluminum reduction cells.
Our vermiculite board series ranges from 450 to 1200 kg/m³ in density, with thickness from 15 to 120 mm, length up to 1200 mm, and width up to 1000 mm — all customizable per drawing or project specification.
The properties of Our vermiculite board include:
- Long-term service temperature up to 1100–1200 °C; melting point 1370–1400 °C
- Low thermal conductivity for stable, long-lasting insulation performance
- GB 8624 Class A1 non-combustible — no smoke or toxic gas release at high temperature
- 100% inorganic, asbestos-free, formaldehyde-free, and free of carbon/sulfur elements
- Dense structure with strong impact resistance — resists cracking, dusting, and powdering
- Excellent dimensional stability and weather resistance — no shrinkage or deformation over time
- Easy to cut, saw, drill, and nail for fast on-site processing and installation
Technical Specifications
The table below summarizes the technical parameters of our vermiculite board models. Data is based on Sanhe's internal product specification sheets and verified against GB/T and YB/T national testing standards; third-party SGS test reports are available upon request.
Parameter | SHV400 | SHV700 | SHV1200 |
Color | Pale yellow | Pale yellow | Pale yellow |
Standard Dimensions | 45×65×230 mm 65×178×240 mm (customizable) | 400×300 mm (customizable) | 1000×600 mm (customizable) |
Thickness | Customizable | 65 mm (customizable) | 50 mm (customizable) |
Bulk Density | 430–500 kg/m³ | 650–800 kg/m³ | 1100–1350 kg/m³ |
Classification Temperature | ≤1050 °C | ≤1050 °C | ≤1050 °C |
Cold Crushing Strength (Compression 10%) | ≥1.3 MPa | ≥3 MPa | ≥7.5 MPa |
High-Temp. Crushing Strength (800 °C / 1h) | ≥1.2 MPa | ≥3 MPa | — |
Cold Modulus of Rupture | — | — | ≥1.5 MPa |
High-Temp. Linear Shrinkage | ≤1% (900 °C/3h) | ≤1% (900 °C/3h) | ≤1.5% (1050 °C/3h) |
Loss on Ignition (LOI) | — | ≤2% (800 °C/2h) | — |
Thermal Conductivity | ≤0.133 W/(m·K) @300 °C ≤0.142 W/(m·K) @600 °C ≤0.155 W/(m·K) @800 °C | ≤0.16 W/(m·K) @500 °C ≤0.18 W/(m·K) @800 °C | ≤0.25 W/(m·K) @200 °C ≤0.27 W/(m·K) @400 °C ≤0.28 W/(m·K) @600 °C |
Test Standards | GB/T 13480 GB/T 17911 YB/T 4130 | GB/T 13480 GB/T 17911 GB/T 32179 | GB/T 13480 GB/T 24729 GB/T 17911 |
Note: Dimensions, thickness, and density are fully customizable. Full series range: thickness 15–120 mm, length up to 1200 mm, width up to 1000 mm, density 450–1200 kg/m³.
Advantages of Vermiculite Board
- Class A1 Fire Rating & Extreme Heat Resistance: melting point of 1370–1400 °C and maximum service temperature up to 1200 °C. Does not burn, melt, or release toxic gases under sustained high-temperature exposure.
- Superior Corrosion Resistance: resists fluoride gas and cryolite-alumina molten salt penetration, making it ideal for the harsh chemical environment inside aluminum electrolysis cells.
- Ultra-Low Thermal Conductivity: the layered, micro-porous structure of expanded vermiculite minimizes heat transfer and delivers stable, long-term insulation performance.
- High Mechanical Strength & Durability: dense, impact-resistant structure with strong cold and high-temperature crushing strength; resists cracking, dusting, and deformation over years of service.
- 100% Inorganic & Environmentally Friendly: free of asbestos, formaldehyde, carbon, and sulfur. Produces no CO₂ or SO₂ at high temperature, ensuring safe handling and a healthier working environment.
- Excellent Machinability: can be sawed, drilled, nailed, and planed on site, significantly reducing installation time and labor costs.
- Fully Customizable: thickness, density, dimensions, and special profiles can be manufactured to customer drawings, including complex interlocking and stepped shapes.
- Backed by 40+ Years of Manufacturing Experience: founded from a refractory materials manufacturer established in 1986, Sanhe combines four decades of non-metallic mineral processing experience with a 15-person masters-level R&D team, a full in-house quality control chain from ore selection to after-sales service, and ISO 9001:2015 certification.
Packaging
Vermiculite boards are stacked on wooden pallets and securely wrapped in heavy-duty carton casing with protective film, then reinforced with packing straps to ensure stability during handling and transport. Each pallet is clearly labeled with the product name, specification, and quantity, along with international handling symbols (this side up, keep dry, fragile, handle with care) to guarantee safe transit across sea and land freight.
Standard packaging is suitable for both 20' and 40' container shipment. Custom packaging — including moisture-proof film, wooden crates, or project-specific labeling — is available upon request for fragile or special-shaped products.
Applications
Aluminum Electrolysis Industry
Sidewall and bottom insulation layers, sealing, and buffer layers in aluminum reduction cells — reduces heat loss and energy consumption while inhibiting electrolyte penetration.
Steel & Metallurgy
Ladle backup linings, furnace linings, and insulation for hot air ducts.
Building Materials Industry
Tunnel kilns, roller kilns, fire-rated door cores, wall insulation, and partition systems.
Power & Petrochemical
High-temperature pipeline insulation, reactor equipment thermal protection, and flue linings.
Residential Fireplaces & Heating
Wood and gas fireplace liners, biomass stoves, pizza ovens, and barbecue grills.
Special Industrial Applications
Fire protection and insulation for ship compartments and aerospace test equipment.
Frequently Asked Questions
Q: What standards does Sanhe vermiculite board comply with?
A: Our vermiculite boards are manufactured in accordance with JC/T 2341-2015 (Expanded Vermiculite Fireproof Board) and achieve the GB 8624-2012 Class A1 non-combustible fire rating.
Q: Is the vermiculite board asbestos-free and environmentally safe?
A: Yes. Our boards are 100% inorganic, free of asbestos and formaldehyde, and release no toxic gases at high temperature.
Q: Can you produce custom sizes, thicknesses, or special shapes?
A: Yes. We offer custom thickness (15–120 mm), density (450–1200 kg/m³), dimensions, and special profiles manufactured to your drawings.
Q: What is the maximum service temperature of the vermiculite board?
A: Up to 1200 °C continuous service temperature, with a melting point of 1370–1400 °C.
Q: Do you provide third-party test reports or certificates?
A: Yes. SGS and other authoritative third-party test reports covering thermal conductivity, fire performance (A1), smoke toxicity, and asbestos-free content are available upon request.
Q: Do you have experience exporting overseas?
A: Yes. Sanhe products have been exported to more than 20 countries, including Japan, Germany, Thailand, South Korea, Saudi Arabia, the UAE, Iraq, Pakistan, and Kazakhstan.
Q: Can I request a free sample before placing a bulk order?
A: Yes, samples are available — please contact us with your application and required specification.
Q: What about MOQ and lead time?
A: MOQ and lead time vary by specification, thickness, and order volume. Please contact us with your project details for a tailored quotation.
Contact Us
Luoyang Sanhe New Material Technology Co., Ltd.
Address: No. 26 Anshangwei Road, Yanshi District, Luoyang, Henan, China
Tel / WhatsApp: +86 151 3876 6787
Email: irenewang@lyshxcl.com
Website: www.lyshxcl.com
We welcome inquiries for samples, technical data sheets, and customized insulation solutions tailored to your project.
Related Application
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Contact Information
Luoyang Sanhe New Material Technology Co., Ltd.
Address: No.26 Anshangwei Road, Shangcheng Strt., Yanshi District, Luoyang, Henan, China
Main Products: SH400 nano insulation board, corrosion-resistant vermiculite insulation board, battery insulation pads
Phone: +86-15138766787
Email: irenewang@lyshxcl.com
Nantong Zhongbao Energy Saving Technology Co., Ltd.
Address: High-tech Zone, Hai'an City, Jiangsu Province
Main Products: SH950 and SH1150 nano insulation boards
Yanshi Subsidiary
Address: Goushi Town, Yanshi District, Luoyang City
Main Products: SH550 nano insulation board
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Empowering global high-temperature industries with energy-efficient thermal insulation solutions
HUATAO GROUP
Contact Us
No.26 Anshangwei Road, Shangcheng Strt., Yanshi District, Luoyang, Henan, China
Email: irenewang@lyshxcl.com
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