85% Min Alumina Bubble Brick For High Temperature Furnace

Hot Sale High purity Alumina Bubble Brick Alumina Hollow Ball Brick For High
Temperature Furnace



Alumina bubble brick is manufactured with alumina bubble and alumina powder as
the main raw materials and other binding agents mix through firing at high
temperature of 1750℃, aluminium bubble brick is a kind of super high
temperature energy saving and heating insulation materials. alumina bubble
firebrick is mainly used for blast furnace linings to resist super high
temperature and prevent heat waste.

85% Min Alumina Bubble Brick For High Temperature Furnace 0

Alumina Bubble Brick Description
Alumina bubble fire brick is a new type high temperature heating insulation
materials and made of industrial alumina in the electrical furnace through
smelting and blowing. alumina bubble refractory brick crystal form is a-Al2O3
microcrystal and main body is alumina bubble which can be made to be all kinds
of products with various shapes for serving the highest temperature of 1800℃
with high mechanical strength and low bulk density.

Properties of Alumina Bubble Brick
.Light weight,

.Saving energy,

.Lower construction cost,

.High temperature resistance,

.Low reheating linear change,

.Good thermal shock resistance.

Manufacturing Process of Alumina Bubble Brick
Aluminium bubblle firebrick adopt alumina bubble ball as the main raw
materials, high performance ultrafine powder as the annexing agent and organic
substance as the binding agent through molding and drying, and then are fired
in the high temperature shuttle kiln.

Advantage of Alumina Bubble Brick
Aluminium bubblle fire brick has the features of heat insulation and low
thermal conductivity, which can result the great heat insulating effect, reduce
heat waste and improve thermal efficiency. using aluminium bubblle refractory
brick can save energy high up to 30%. and alumina bubble block’ service
temperature is high up to 1750 ℃. the thermal stability is good and the
reheating linear change rate is low, aluminium bubble block can results the
long service life.

Rongsheng Refractory Alumina Bubble Brick Specifications
Item Alumina Bubble Brick
Types Unit 85# 90# 99#
The Highest Service Temperature ℃ 1680 1700 1800
Al2O3 % ≥85 ≥90 ≥99
SiO2 % ≤15 ≤8 ≤0.2
Fe2O3 % ≤0.2 ≤0.2 ≤0.2
Bulk Density g/cm3 1.4-1.7 1.4-1.7 1.4-1.7
Cold Crushing Strength MPa ≥12 ≥10 ≥9
Refractoriness Initial Under Load (0.1MPa, 0.6%) ℃ ≥1650 ≥1760
≥1760
Reheating Linear Change Rate (1600℃*3h) % ±0.3 ±0.3 ±0.3
Heat Expansion Coefficient (Room temperature -1300℃) ~7.8 ~8.0
~8.6
Thermal Conductivity (Average temperature 800℃ ) w/(m*k) ≤0.8 ≤1.3
≤1.5


Application of Alumina Bubble Brick
Alumina bubble brick is a kind of very important refractory material for
resisting high temperature and special demands of positions for furnace and
kiln, which is mostly used as insulating brick for insulation layer of furnace
and kiln, and also aluminium bubble brick can be used for service linings in
manufacturing high purity quartz for the electronics industry such as ceramic
tile linings in gas turbines and backup linings in reactors.

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