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 Pusher-type furnaces

The service temperature in pusher furnaces is usually equal to 1.250°C. 

Blanks (sheet slabs or blooms) are moving along the entire furnace length by means of pushers. These furnaces are quite popular because of small installation and maintenance costs as compared to other heating furnaces. 

There are two types of furnace bottoms:

  • flat hearth (in this case, blanks move along metal gravity conveyors and baddeleyite-corundum products of BAKOR type);
  • tubular hearth (in this case, blanks move along piper riders).

The major abrasive wear of the hearth lining occurs in baddeleyite-corundum products.

Our lining systems guarantee quick and easy installation, good heat insulation and overall savings on power costs. The wide range of heat insulation materials allows us to perform repair and maintenance works on pusher-type furnaces successfully.

The furnace flat hearth lining is multi-layered:

  • Calcium silicate slab of such brands as CERABOARD SILICATE 1000, CERABOARD SILICATE 1100.
  • Insulation concretes of such brands as CERALIT LWCAST CR27060, CERALIT LWCAST CR40059, CERALIT CAST CL45134.
  • Working layer CERALIT CAST AL58007,CERALIT CAST KL79047.

Tubular furnace hearth lining. Keralit specialists developed CERALIT heat insulation two-layer blocks for the lining of skid pipes. These blocks are characterized by installation simplicity and rapidness, as well as high inter-repair stability.

CERALIT insulation blocks have a good track record at different iron and steel plants both in Russia and the CIS countries.

The furnace wall lining is multi-layered:

  • Calcium silicate slab of such brands as CERABOARD SILICATE 1000, CERABOARD SILICATE 1100.
  • Insulation bricks of such brands as FL 26-08, FL 24-06.
  • Working layer: gunned castable CERALIT GUN HK70070, CERALT GUN CR57009 or blown-in concrete CERALIT CAST HL60140.

Tamping of burner tunnels is provided with CERALIT PLAST BK70008 plastic mixture.

The furnace roof lining is multi-layered:

  • Insulation layer: ceramic fiber CERAWOOL
  • Insulation concrete CERALIT LWCAST VR32026.
  • Working layer: concrete of such brands as CERALIT CAST HL60140, CERALIT LWCAST CR40059.

The lining of the exhaust gas system, recuperator and chimney stack is provided from lightweight gunned castables as well as insulation fire-clay grog concretes.