Dense fused alumina fine powder 0-1mm -200 -180 -320

Dense fused alumina fine powder 0-1mm -200 -180 -320, light gray or gray-white powder. The main crystal phase of dense fused alumina is α-Al2O3. The α-Al2O3 content is more significant than 98%; the porosity is less than 4%. It is a new high-purity refractory raw material made using high-purity industrial alumina powder and reducing agent according to a certain ratio in an electric arc furnace after being melted at a high temperature. Dense fused alumina fine powder is the product passing through the finest screen in the refractory sand production line. Dense fused alumina fine powder is characterized by acid and alkali resistance, reasonable wear and corrosion resistance, and volume stability. Furthermore, it is mainly used for metallurgy, ceramics, the chemical industry, etc. It produces blast furnace troughs and castable and high-quality raw material to produce various corundum products.

Introduction of  Dense fused alumina fine powder 0-1mm -200 -180 -320:

Dense fused alumina pine powder, with α-AL2O3, as the main crystalline phase, gray, is characterized by high melting point, high bulk density, low apparent porosity, excellent wear resistance, slag resistance, steady volume, and thermal shock resistance. It is an excellent refractory material in the fused alumina series.
Dense fused alumina is fused in the furnace with the industrial alumina as the raw material; it is a new refractory material. Its characteristics are acid & alkali-proof, good grinding performance, erosion-resistant, and steady volume.

Application of dense fused alumina fine powder 0-1mm -200 -180 -320:

  • Unshaped refractory materials:
    castables, ramming materials, prefabricated refractory parts, etc
  • Shaped refractory materials:
    The refractories products for Continuous Casting
    -submerged entry nozzle,
    –long nozzle,
    –stopper
    -breathable brick
    -nozzle seat brick
  • Other applications
    -Metallurgy
    -Ceramics
    -Chemical industry

Chemical compositions and physical properties:

Item Fine powder Typical value
Al2O3 (%) ≥ 99 99.4
SiO2 (%) ≤ 0.7 0.5
Fe2O3 (%) ≤ 0.1 0.05
TiO2 (%) ≤ 0.1 0.05
CaO (%) ≤ 0.1 0.05
MgO (%) ≤ 0.1 0.05
Na2O (%) ≤ 0.1 0.05
C (%) ≤ 0.12 0.1
Apparent porosity (%) ≤ 2 0.8
Bulk density (g/cm3) ≥ / /
True density (g/cm3) ≥ 3.96 3.98

Dense Fused Alumina(FAQ)

What is the specific weight?

The specific weight is the ratio of the weight of a body to its volume. The specific weight of corundum under normal conditions is 3.94 g/cm3.

How is silicon carbide obtained?

Silicon carbide (SiC) is produced from coke and quartz sand applying the Acheson process in an electric resistance furnace. When petrol coke and quartz sand are grouped around a graphite electrode and heated to a temperature of 2,000°C, black and slightly higher-quality green SiC are obtained. Green SiC has a

Is sample parts testing available?

MicroBlasting is extremely efficient and precise, so it is hardly likely you will need to recycle abrasive, but it is important to know the risk involved. Unlike grit or bead blasting, a MicroBlasting system can only cycle abrasive once. Abrasive should not be reclaimed and reprocessed for a second pass

Amount of abrasive applied:

This decision is made by knowing the type of material you will be working with. Open Coat – Here, the abrasive granules cover from 50% – 70% of the backing and are set at pre-determined spacing to reduce loading. Used on softer surface materials that tends to load or fill

What does the form factor (grain shape) indicate?

The description of the grain shape can range from “angular” to “acicular” to “spherical”. When the value of the dimensionless form factor is 1, the grain is spherical. The smaller the form factor, the pointier the grain.

What does the term “flow properties” mean?

The flow behaviour of powders depends on many factors. The following applies in general: Coarser, dry grain types flow easily, but the fine the grains get, the stronger is the impact of morphology and various adhesive forces on the flow behaviour: Van der Waals forces Liquid bridges Electrostatic interaction The

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