HEAT RESISTANT SILICA REFRACTORIES FOR ELECTRIC-STEELMAKING FURNACES 
SPECIFICATION OF UKRAINE 26.2-00191738-005:2006 (WITH AMENDMENTS NO.1, 2)

EDT

EDT

Heat resistant silica refractories for electric-steelmaking furnaces of EDT grade are intended for electric-steelmaking furnace arches laying.

The products are supplied on wooden pallets interlaid with cardboard, with protected corners, wrapped with stretch film and bundled with plastic strip.
Parameter descriptionValue
Typesiliciferous
Groupsilica (SiO2 > 93%)
Refractoriness valuefire resistance (1580 to 1770°С)
Porosity degreecompacted (Ptot 16-20%)
Heat treatment methodburnt
Molding processsemidry forming
Binding type 1with inorganic binders
Binding type 2ceramic
Intended purposerepair/construction
scope of applicationin electric-steelmaking furnaces with the capacity of more than 50 t
Reference document for product propertiesHeat resistant silica refractories for electric-steelmaking furnaces 
Specification of Ukraine 26.2-00191738-005:2006 (with amendments No.1, 2)
Reference documents for product dimensionsSilica refractories for electric-steelmaking furnaces according to DSTU 2343-94 (GOST 1566-96)
Parameter descriptionValue
Al2O3, %≤1,5
CaO, %≤2,0
Compression ultimate strength, N/mm2, not less than50
Density, g/сm32,32-2,36
Fe2O3, %≤1,5
Fire resistance, °С, not less than1710
Fusion point, °С, not less than1660
Interconnected porosity, %, not more than16-19
SiO2, %≥95
Thermal expansion (700°С), %1,3
FormArticle No.Additional informationPhoto
crossover double-sided feather-edged brickNo.7for lining of sector arch rows with thickness 230mm in combination with straight product No.2mark-20-conf-252-small.jpg
No.8for lining of sector arch rows with thickness 300mm in combination with straight products No.3 and 4
front double-sided feather-edged brickNo.5for lining of interelectrode arches and arches with thickness 230mm in combination with straight product No.2 and for lining of arch sector rows in combination with feather-edge product No.9mark-20-conf-257-small.jpg
No.6for lining of interelectrode arches and arches with thickness 300mm in combination with straight product No.3 and for lining of arch sector rows in combination with feather-edge product No.10
straight brickNo.1for interlock selectionmark-20-conf-261-small.jpg
No.2for lining of arch rows with thickness 230mm in combination with feather-edge products No.5 and 7
No.3for lining of arch rows with thickness 300mm in combination with feather-edge products No.6 and 8
depending on drawingcustomer drawingUNDEFmark-20-conf-307-small.jpg
pyramidal sided feather-edged brickNo.10for lining of sector arch rows with thickness 300mm in combination with feather-edge product No.6mark-20-conf-321-small.jpg
No.9for lining of sector arch rows with thickness 230mm in combination with feather-edge product No.5
electrode brickNo.11for lining of rings of electrode holes with diameter 270mm and in combination with product No.12 for holes diameter 305-440mm in arches with thickness 230mmmark-20-conf-322-small.jpg
No.12for lining of rings of electrode holes with diameter 475mm and in combination with product No.11 for holes diameter 305-440mm in arches with thickness 230mm
No.13for lining of internal half rings of electrode holes with diameter 420mm and in combination with product No.14 for holes diameter 450-600mm in arches with thickness 300mm
No.14for lining of internal half rings of electrode holes with diameter 630mm and in combination with product No.13 for holes diameter 450-600mm in arches with thickness 300mm
external electrode brickNo.15for lining of external half rings of electrode holes with diameter 420 and in combination with product No.16 for holes diameter 450-600 in arches with thickness 300mark-20-conf-323-small.jpg
No.16for lining of external half rings of electrode holes with diameter 630 and in combination with product No.15 for holes diameter 450-600 in arches with thickness 300
back brickNo.17for lining of arch support with thickness 230mmmark-20-conf-324-small.jpg
No.18for lining of arch support with thickness 300
barNo.4for lining of arch rows with thickness 300 in combination with straight product No.3 and feather-edge brick No.8mark-20-conf-325-small.jpg
FormArticle No.Dimension, mmDrawing
crossover double-sided feather-edged brickNo.7UNDEFcrossover double-sided feather-edged brick
No.8UNDEF
front double-sided feather-edged brickNo.5UNDEFfront double-sided feather-edged brick
No.6UNDEF
straight brickNo.1UNDEFstraight brick
No.2UNDEF
No.3UNDEF
depending on drawingcustomer drawing
pyramidal sided feather-edged brickNo.10UNDEF
No.9UNDEF
electrode brickNo.11UNDEFelectrode brick
No.12UNDEF
No.13UNDEF
No.14UNDEF
external electrode brickNo.15UNDEFexternal electrode brick
No.16UNDEF
back brickNo.17UNDEFback brick
No.18UNDEF
barNo.4UNDEFbar