Tundish

Tundish and gunning mixes - TRIGUN

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Tundish mixes are produced of magnesia, olivines, mineral and organic fibres and special additives on the advanced technological line. They are applied by slurry gunning in tundishes, where the mix is projected on the tundish walls and bottom creating working lining. They are dispatched as dry mixes packed in big bags.

Gunning mixes are manufactured of bauxite, andalusite, calcinated fireclay, plastifying agents and other additives. They are applied by gunning as repair materials to supply worn areas on refractory linings. They are packed in paper or big bags.

 

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TRIGUN Application temperature Chem. composition Grain size Main raw material base
Grade (0C) Al2O3(%) SiO2 (%) Fe2O3(%) MgO (%) CaO (%) Cr2O3(%) (mm)

 

NH60O 1600 1,0  29,0  4,9 60,0  1,0  0-0,5  Magniesia/Olivine
NH84MJ 1700  1,3  3,2 6,9  85,0  3,5  0-0,5

Magnesia 

NH85M 1700  1,6  4,0 1,5 

85,0

2,0 0-1,0 Magnesia 
NH88M 1700  1,8 4,7 1,5  85,0 2,5 0-1,0 Magnesia
BHT90HK 1600

90,0

0,3 5,6 0-3,0 Brown-fused alumina
BHT60A 1500 65,0  – 1,0  – 5,0  – 0-3,0 Andalusite
BHT45L 1400 45,0  – 1,8  – 7,0  – 0-3,0 Fireclay

BHT40L

1350 40,0  – 4,0  – 9,0  – 0-3,0 Fireclay
BHT35L

1300

35,0  – 5,0  – 10,0  – 0-3,0 Fireclay

Identification marking of tundish and gunning mixes:

a b c
NH 60 O
  1. a. NH – gunning mixes 
  2.     BHT – dense tundish castable 
  3. b. 60 – majority component in % 
  4. c. O – Olivine – based
  5.     M – Magnesia – based 
        A – Andalusite – based
  6.     HK – Brown-fused alumina  
  7.     L – Fireclay – based

 

 

Other quality features to be agreed between the customer and the supplier.