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 Mill products

Pusher-type furnaces

he 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 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.

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 fr om lightweight gunned castables as well as insulation fire-clay grog concretes.


Walking-hearth furnaces

The design of walking-hearth furnaces enables transportation and heating of blanks of varied sizes. 

The advantage of walking-hearth furnaces as compared to pusher furnaces consists in triple metal heating as well as reduced abrasive wear of the furnace roof lining. 

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 successful repair and maintenance of walking-hearth furnaces. 

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.
  • Special anchor units are used for lining reinforcement.

Furnace wall lining. The furnace wall lining is multi-layered:

  • Calcium silicate slab 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 plastic mixture CERALIT PLAST BK70008. 

The furnace roof lining is multi-layered:

  • Insulation layer: ceramic fiber CERAWOOL, insulation concrete CERALIT LWCAST VR32026.
  • Working layer: concrete CERALIT CAST HL60140, CERALIT LWCAST CR40059.

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


Walking-beam furnaces

A walking-beam furnace is a continuous furnace, whose blanks are transported by means of the cyclical forward-backward motion of water-cooled beams. The transportation principle of the blanks is similar to the one used in walking-hearth furnaces. Differences are related to water-cooled beams.

The main advantage of WBF is a quadraple, or the quickest heating of blanks.

The main disadvantage is a network of water-cooled beams (support tubes), thus leading to considerable heat losses with cooling water. The service temperature reaches 1.250 °C.

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 successful repair and maintenance of walking-hearth furnaces.

Keralit specialists developed CERALIT heat insulation two-layer blocks for the lining of skid pipes. These blocks are characterized by simple and quick installation, as well as a long inter-repair stability.

CERALIT insulation blocks have a good track record at a variety of iron and steel plants of Russia and the CIS countries.

The furnace wall lining is multi-layered:

  • Calcium silicate slab 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 plastic mixture CERALIT PLAST BK70008.

The furnace roof lining is multi-layered:

  • Insulation layer: ceramic fiber CERAWOOL, insulation concrete CERALIT LWCAST VR32026.
  • Working layer: concrete CERALIT CAST HL60140, CERALIT LWCAST CR40059.

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


Roller-hearth furnaces

Roller-hearth furnace is a continous-action through-type furnace, the hearth of which consists of a great number of rollers moved by a special drive. These rollers are made of heat-resistant steel or are water-cooled. Roller-hearth furnaces are used for thermal treatment of metal products or for metal heating prior to applying the hot-rolling method. Rollers are the most critical elements of roller-hearth furnaces. Furnaces with the gas temperature of 800–1000 °C are equipped with uncooled rollers; with the temperature of 1.000–1.200 °C—rollers with a water-cooled drive shaft.

In a vast majority of cases, rollers are designed water-cooled; with a smooth roll made of heat-resistant chrome-nickel steel.

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 successful repairs on roller furnaces.

Keralit specialists developed CERALIT heat insulation 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 a variety of iron and steel plants of Russia and the CIS countries. One may provide in-situ installation of the roller lining into pre-cast formwork using dense refractory concretes (castables).

Furnace wall lining is multi-layered:

  • Calcium silicate slab CERABOARD SILICATE 1000, CERABOARD SILICATE 1100.
  • Insulation bricks of such brands asFL 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 plastic mixture CERALIT PLAST BK70008.

The furnace roof lining is multi-layered:

  • Insulation layer: ceramic fiber CERAWOOL, insulation concrete CERALIT LWCAST VR32026.
  • Working layer: concrete CERALIT CAST HL60140, CERALIT LWCAST CR40059.

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


Circular kilns

A circular kiln is an industrial furnace, wh ere products are heated on a rotary hearth.

Circular kilns are mainly used for heating blanks during tube rolling, wheels, and the kiln tyres of the rolling stock for thermal treatment of metal products as well as for heating non-ferrous blanks prior to rolling.

A circular kiln consists of a rotary hearth and an arched immobile ring-shaped channel. The blanks are positioned on a flat hearth by using pits. These places concentrate thermomechanical stress resulting in destruction of the pits and uneven heating of blanks. Therefore, all used materials shall have considerable abrasion resistance and small-case thermal expansion.

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 successful repairs on circular kilns.

The furnace flat hearth lining is multi-layered:

  • Calcium silicate slab 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 KL79047.

Finished products can be manufactured for the kiln working layer lining.

The furnace wall lining is multi-layered:

  • Calcium silicate slab 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 plastic mixture CERALIT PLAST BK70008.

The furnace roof lining is multi-layered: 

  • Insulation layer: ceramic fiber CERAWOOL, insulation concrete CERALIT LWCAST VR32026.
  • Working layer: concrete CERALIT CAST HL60140, CERALIT LWCAST CR40059.

The lining of the gas duct, recuperator, and chimney stack are made of various lightweight gunned castables, as well as insulation fire-clay grog concretes.


Bogie furnaces

Thermal bogie furnaces are used for thermal treatment of relatively large blanks, the length of which exceeds 2 meters, thus allowing furnace charging by means of a traveling crane. 

The furnace hearth lining is exposed to frequent thermal shocks to the furnace design features. For that reason, the lining shall ensure a large number of thermal cycles, substantial stability, and good heat insulation.

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 successful repairs on bogie furnaces.

The furnace flat hearth lining is multi-layered:

  • Calcium silicate slab 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.

The furnace wall lining is made of special heat insulation blocks CERAWOOL BLOCK from ceramic fiber. One may also use lightweight fire-clay grog and gunned castables.

The furnace roof lining is made of special heat insulation blocks CERAWOOL BLOCK from ceramic fiber. One may also use lightweight fire-clay grog and gunned castables.

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


Soaking pits

Soaking pits are intended for storing hot steel blanks in order to align the temperature along the cross-section before they are supplied to the mill products.  

Blanks are installed on special metal bases.  

Our 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 successful repairs on soaking pits.  

The flat hearth lining is designed as multi-layered:

  • Calcium silicate slab 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.

The pit wall lining is made of special heat insulation blocks CERAWOOL BLOCK from ceramic fiber. One may also use lightweight fire-clay grog and gunned castables. 

The lining of the pit roof is made of special heat insulation blocks CERAWOOL BLOCK from ceramic fiber. One may also use lightweight fire-clay grog and gunned castables.  

The gas duct lining, the recuperator, and the chimney stack are made of various lightweight gunned castables as well as the insulation of fire-clay grog concretes.