1, Definition of physical and chemical indicators for high alumina bricks
The physical and chemical indicators of high alumina bricks refer to the technical indicators such as physical properties, physical properties, chemical composition, chemical properties, and chemical properties of high alumina bricks, which are also quality indicators of high alumina refractory bricks.
2, What are the physical and chemical indicators included in high alumina bricks?
There are many physical and chemical indicators for high alumina bricks, and we will explain the important physical and chemical indicators.
(1) Chemical index: The main chemical component content, which is used to check the amount of aluminum content in high alumina refractory bricks. Customers pay great attention to the aluminum content when purchasing high alumina bricks, so this indicator must be accurate.
(2) Physical indicators
The volumetric density index is used to check whether the high alumina refractory brick is dense, which can indirectly reflect the corrosion resistance of the high alumina brick.
The size of visible porosity indicates the degree of density of high alumina bricks. The smaller the visible porosity of high alumina bricks, the better the density and the better the use effect of high alumina bricks.
The compressive strength of high alumina bricks can reflect the amount of pressure that high alumina bricks can withstand as kiln linings.
The load softening temperature of 0.2MPa for high alumina bricks is determined by observing at which temperature the function of the brick as an inner lining begins to decrease.
Thermal shock stability reflects the ability of high alumina bricks to withstand rapid heating and cooling.
The rate of change of the re firing line refers to the residual shrinkage that occurs after heating high alumina bricks to a certain temperature, holding them for a certain period of time, and cooling them.
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