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Silica Refractory Bricks

Silica Refractory Bricks
Silica Refractory Bricks
Product Code : SRB-39
Price And Quantity
Minimum Order Quantity :
27
Unit of Measure :
Metric Ton/Metric Tons
Product Description

Banking on our decades of industrial knowledge and experiences, we are offering an exceptional range of Silica Refractory Bricks. These bricks are commonly used in the furnaces and kilns found in industries like steel, cement, non-ferrous metals and glass. Our Silica Refractory Bricks are designed from top quality silica at our state of the art manufacturing unit by a team of veteran engineers. Moreover, these bricks are checked on the parameters of durability, finishing and impact strength prior to dispatch.

Features:

  • Excellent density, porosity and cold crushing strength
  • High refractoriness under load with good thermal shock resistance
  • Can also be customized as per the exact demands of the client

Further Details:

Silica refractories mainly consist silicon dioxide (SiO2). Not taking into account impurities of raw materials, silica refractories also comprise calcium compounds produced from calcium hydroxide which is a bonding agent here. The fired silica brick comprises crystalline SiO2 modifications cristobalite, some residual quartz and tridymite. During the process of firing, the lime reacts with finest quartzite elements to form wollastonite (CaO.SiO2). Also, the matrix contains very small quantities of hematite, magnetite, calcium ferrite, calcium olivine and hedenbergite, which are formed from the impurities. These are crystalline phases, and are the reason for discoloration & spot formation on the fired bricks.

The converted coarse grain consists cristobalite, a residual quartz proportion corresponding to the degree of transformation, and minute tridymite, while the fine grained matrix is improved with tridymite, wollastonite and glass. Silica bricks having equal chemical composition can have different mineralogical compositions. This can cause reasonably different behavior throughout the use. As a result, it is not always necessary to evaluate silica bricks exclusively by their chemical composition. It is good to consider the transformation degree and thermal expansion behavior of the bricks.

The transformation degree can be determined by the density of the content of residual quartzite. When the degree of transformation is extreme, the density of fired silica bricks is lowest. It reaches the value of 2.33 g/cu cm with comprehensive transformation. The density enables conclusions to be drawn with respect to the unalterable after-expansion, which must be estimated during the service. The transformation degree can be calculated more accurately with the assistance of residual quartz content, which is defined by the analysis of radiographic phase, or X-ray diffraction examination.

Technical Details:

Colour

Density

Residual quartz

Degree of transformation

Linear after expansion(according to quartzite type


g/cu cm

%


%






Greenish white

Above 2.45

20 or greater

Low

2-3

Evenly brown

About 2.40

15-20

Medium

1-2

Light brown spotty or yellowish white

Below 2.35

Less than 6

Very good

Less than 1

Contact Us

406, "Aditya Plaza", Nr. Jodhpur Cross Road, Satellite, Ahmedabad, Gujarat, 380015, India
Phone :+917259333288