REFRACTORY AND HIGH-REFRACTORY PRODUCTS FOR LAYING OF HOT BLAST STOVES AND MAINS OF BLAST FURNACES ACCORDING TO SPECIFICATION OF UKRAINE 23.2-00190503-432:2018

DVNK

DVNK

DVNK grade packed refractories fall into siliciferous type as all silica products due to high content of silicon dioxide. 

The products of this grade are notable for high mechanical hardness, constancy of volume and increased temperature of softening, equal to not less than 1620°С; therefore, there are widely used in metallurgy for laying of hot-blast furnace heaters.

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 applicationproducts for laying of hot-blast stoves, hot blast mains, orifices and blast furnace tuyere connections
Reference document for product propertiesRefractory and high-refractory products for laying of hot blast stoves and mains of blast furnaces according to Specification of Ukraine 23.2-00190503-432:2018
Parameter descriptionValue
Additional linear growth (shrinkage) at holding within 2 hours and temperature °С, %0,4 (1450°С)
Compression ultimate strength, N/mm2, not less than30
Density, g/сm32,37
Fe2O3, %≥2,0
Fire resistance, °С, not less than1690
Fusion point, °С, not less than1620
Interconnected porosity, %, not more than22
SiO2, %≥93
FormArticle No.Additional informationPhoto
checker brickcustomer drawingWithin the temperature range 1100-1550°С: at 1100°С and load not more than 2 MPa; at 1500°С and load not more than 0.5 MPa; at 1550°С and load up to 0.2 MPa in checker layingmark-2-conf-306-small.jpg
FormArticle No.Dimension, mmDrawing
checker brickcustomer drawing