Properties Of Good Refractory Bricks Or Fire Bricks - Are Recommended In The Furnace

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Properties of Good Refractory Bricks or Fire
Bricks - Are Recommended In the Furnace Bio
link https//www.123articleonline.com/articles/127
8627/properties-of-good-refractory-bricks-or-fire-
bricks-are-recommended-in-the-furnace When it
comes to furnaces, fireboxes, and kilns, blocks
made up of refractory ceramic materials are
used. These blocks are known as fire bricks or
alternatively refractory bricks. And they are
primarily utilized because they are resistant to
high temperatures and have a low thermal
conductivity, resulting in greater efficiency.
These bricks can easily withstand extremely high
temperatures and that without any melting or
fusion, which results in them keeping their
structure for a longer period of time.
But before one goes and discusses the properties
of good refractory bricks, it is vital that they
understand different types of refractory bricks
present in the market. And while their ultimate
purpose is the same, their application
varies. Fire bricks or refractory bricks can be
distinguished into three categories basic
refractory bricks, acid fire bricks or acid
resistant bricks, and neutral refractory
bricks. Basic Refractory bricks containing a
huge amount of magnesia are favored because of
their corrosion and chemical resistance
properties. Whereas Acid Resistant bricks, as the
name suggests, are acid proof bricks and are
utilized to resist acidic reactions from
chemicals and even from the weather. An acid
proof brick lining of silica is added on natural
fire clay to increase the resistance of
refractory bricks. Neutral refractory bricks
contain the properties of both acid fire bricks
and basic refractory bricks they offer good
resistance against the acidic nature of
chemicals, environment, as well as against
corrosion, but they are not utilized for
fire-resistance purposes. Now we come to the
properties of good refractory bricks or fire
bricks, which are recommended in the furnaces.
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• Able to handle high temperatures
• Naturally, the first task of good refractory
  bricks is to be able to handle extremely high
  temperatures of the furnaces. Some fire bricks
  can handle up to 1600 degrees of high
  temperature.
• Must be able to conserve their rigidity at such
  high temperatures
• Another essential aspect of fire bricks is
  maintaining their rigidity at extreme
  temperatures as it is crucial to maintain the
  structural integrity of the brick to maintain the
  structure.
• No irreversible change in the volume at the
  furnace
• In a good refractory brick, irreversible volume
  fluctuation does not happen. Any leakage will
  lead to the opening of junctions in a leaky
  furnace, which is simply not good news. So,
  another crucial property of good refractory
  bricks is their ability to avoid irreversible
  volume fluctuations at furnace temperatures.
• Do not split or crack.
• A key feature of refractory brick or fire bricks
  is when exposed to high temperature or even rapid
  fluctuation in temperature, it would crack or
  split off fragments. It is a vital property as it
  is usual for refractory bricks of fire bricks in
  furnaces to get exposed to a rapid change of
  temperature.

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Good refractory bricks do not form fusible
commodities with slags, or at least they do not
do that easily. Source Link https//www.123artic
leonline.com/articles/1278627/properties-of-good-r
efractory- bricks-or-fire-bricks-are-recommended-
in-the-furnace