CERAMIC FIBER PRODUCTS

Ceramic fibre is a man-made silicate-alumina fibre with very low thermal conductivity (0.06–0.12 W/mK) and very low heat storage. It is used as a flexible furnace lining for energy savings of 30–50% versus dense brick. Standard forms are blanket, module, board and bulk. Service temperature classes range from 1260°C to 1430°C.

Blanket is a flexible roll (1, 2, 3 inch thicknesses, 96–128 kg/m³ density), used for back-up insulation, expansion joints and pipe lagging. Modules are pre-compressed folded blanket attached to anchors, used as a one-shot hot-face lining for furnace walls and roofs. Boards are rigid, machinable panels (200–300 kg/m³) for high-velocity zones, ladle covers and burner blocks.

Standard ASTM C-892 / EN 1094 classes: 1260°C (Class A, standard alumino-silicate), 1325°C (Class C, zirconia-doped), 1400°C (Class D, high-purity), and 1430°C (Class E, high-alumina polycrystalline). Continuous-use temperature is typically 100–150°C below the classification temperature for long life. Above 1300°C, devitrification reduces fibre flexibility over time.

Refractory ceramic fibre (RCF) requires controlled handling, dust generated during cutting and fitting can cause respiratory irritation. Use FFP3 dust masks, gloves, long-sleeved cotton overalls. Modern bio-soluble alkaline-earth-silicate (AES) fibre wools (rated to 1200°C) are exempt from carcinogen classification under EU regulation. We supply both RCF and AES grades, see the data sheet for the recommended PPE.

Replacing a 230 mm dense-brick lining with an equivalent ceramic-fibre module lining typically reduces shell heat loss by 50–70% and cuts furnace energy consumption by 20–35% for batch furnaces. Continuous furnaces see smaller savings (10–20%) but faster cycle times. Payback is usually 12–30 months depending on operating hours and fuel cost.

Yes, Shanker Agencies is an authorised dealer for Divine Cerawool. We stock standard 1260°C and 1430°C blanket and modules in Delhi for same-day dispatch. Boards, paper, ropes and special shapes are also supplied. Full PPE recommendation and installation guidance comes with every order.