SILICA REFRACTORIES ACCORDING TO SPECIFICATION OF UKRAINE 23.2-00191738-010:2018

DM

DM

DL grade silica refractories are used in metallurgy predominantly for laying of open-hearth and electric-steelmaking furnaces. 
In addition, the refractories of this grade are used for laying of walls and arch of open-hearth glass furnace regenerators.

Notwithstanding their low heat resistance (withstand only one or two thermal cycles), these refractories have such an advantage as preservation of construction hardness (especially in furnace arches) almost till the fusioning point at constant temperature mode.

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 degreeaverage dense (Ptot 20-30%)
Heat treatment methodburnt
Molding processsemidry forming
Binding type 1with inorganic binders
Binding type 2ceramic
Intended purposerepair/construction
scope of applicationfor lining of open-hearth furnaces and other heat aggregates
Reference document for product propertiesSilica refractories according to Specification of Ukraine 23.2-00191738-010:2018
Reference documents for product dimensionsSilica and chamotte refractories for lining of open-hearth furnaces according to DSTU GOST 6024:2009 (ISO 5019-3-84) (with amendments No.1,2,3)
Parameter descriptionValue
Apparent specific gravity, g/сm31,9
Compression ultimate strength, N/mm2, not less than≥22,5
Density, g/сm3≤2,38
Fire resistance, °С, not less than1710
Fusion point, °С, not less than1650
Interconnected porosity, %, not more than23
SiO2, %≥94
FormArticle No.Additional informationPhoto
front feather-edged brick (double-sided or one-sided)No.19mark-8-conf-258-small.jpg
No.20
No.21
No.22
No.23
straight brickNo.12mark-8-conf-261-small.jpg
No.13
No.15
No.4
No.5
No.9
one-and-a-half straight brickNo.16mark-8-conf-262-small.jpg
No.17
No.18
skew brickNo.33mark-8-conf-264-small.jpg
No.34
No.35
No.36
front one-and-a-half feather-edged brick (double-sided and one-sided)No.24mark-8-conf-287-small.jpg
No.25
No.26
No.27
depending on drawingcustomer drawingUNDEFmark-8-conf-307-small.jpg
edge one-sided feather-edged brickNo.31mark-8-conf-308-small.jpg
No.32
trapezoidal one-sided feather-edged brickNo.28mark-8-conf-339-small.jpg
No.29
FormArticle No.Dimension, mmDrawing
front feather-edged brick (double-sided or one-sided)No.19UNDEF
No.20UNDEF
No.21UNDEF
No.22UNDEF
No.23UNDEF
straight brickNo.12UNDEFstraight brick
No.13UNDEF
No.15UNDEF
No.4UNDEF
No.5UNDEF
No.9UNDEF
one-and-a-half straight brickNo.16UNDEFone-and-a-half straight brick
No.17UNDEF
No.18UNDEF
skew brickNo.33UNDEFskew brick
No.34UNDEF
No.35UNDEF
No.36UNDEF
front one-and-a-half feather-edged brick (double-sided and one-sided)No.24UNDEFfront one-and-a-half feather-edged brick (double-sided and one-sided)
No.25UNDEF
No.26UNDEF
No.27UNDEF
depending on drawingcustomer drawing
edge one-sided feather-edged brickNo.31UNDEF
No.32UNDEF
trapezoidal one-sided feather-edged brickNo.28UNDEF
No.29UNDEF