Lining materials

Elkem ELTAP™ products have proven performance as linings in furnaces producing silicon, ferrosilicon and silicomanganese, and as repair pastes to furnaces producing ferrochrome and ferromanganese. The ELTAP™ product range contributes to furnace linings that last for 10-20 years, stable furnace operation as well as increased load on small silicon furnaces. 

Customer value

Elkem Carbon has been a supplier of cold tamping pastes based on electro calcined carbon and silicon carbide for more than 25 years.

With ELTAP™ linings, Elkem Carbon adds value to our customers through:

  • Increased and predictable lifetime
  • Quick installation and easy handling
  • Improved working environment
  • Shorter delivery time than carbon blocks

The ELTAP™ lining pastes offer several advantages:

  • A monolithic alternative to blocks and bricks, fit most shapes.
  • High oxidation resistance
  • Better quality than most carbon blocks since ELTAP™ is made from electro calcined carbon where 30-40% of the material is graphitised
  • Optimal use through technical cooperation
  • Quicker installation time compared to block installation i.e. less production loss

ELTAP™ Lining pastes

  • Type K is used in the bottom and sidewalls of the furnace and is in direct contact with slag and metal
  • Type KC is used in sidewalls when a high thermal conductivity is required (freeze linings). The heat conductivity of ELTAP™-KC is approximately the double of a normal tamping paste.
  • Type SiC forms a monolithic layer of silicon carbide. Furnace crater gases are unable to penetrate down into the refractory layers below the SiC layer, preventing attack on the refractory materials. ELTAP™-SiC is also strong against oxidation.
  • Type KR has a PAH-free binder and achieves sufficient mechanical strength already at 130°C. Due to this the material can be installed in furnace walls closer to water cooled components than materials with a pitch binder.
  • Type HCP has a PAH-free binder and a high graphite content providing a high thermal conductivity between furnace lining and steel shell.