• Brown fused alumina

Brown fused alumina

Brown jade, common name is also known as diamond sand, is a brown man creted with alumina, carbon material, and three raw materials that melt and reduced in the electric arc furnace, so it is this name. The main chemical ingredients of the brown jade are Al2O3, and its content is 95.00% -97.00%, and there is another small amount of Fe, Si, Ti, etc. The brown jade is the most basic abrasive, because its grinding performance is good, wide application range, is cheap, and is widely used.

The brown jade is the main raw material with aluminum aluminous, coke (anthracite), and has a high temperature smelting in the electric arc furnace. It is suitable for grinding high metal, such as various general steel. , Can forged cast iron, hard bronze, etc., can also manufacture advanced refractories. The brown grungy has the characteristics of high purity, good crystallization, strong fluidity, low wire expansion coefficient, and corrosion resistance. With dozens of fire-resistant manufacturers, the product has the characteristics of explosion, no powdering, and non-cracking in the application. In particular, it is much higher than the cost-effectiveness of traditional brown jasteas, which makes it a best aggregate and filler of brown jade refractory materials.

Typical physical properties

Hardness 9.0mohs
Color brown
Grain shape Tripartite crystal
Melting point ca. 2250 °C
Maximum service temperature ca. 1900 °C
Specific gravity ca. 3,9 – 4,1 g/cm3
Bulk density ca. 1,5 – 2,1 g/cm3

Typical physical analysis

Brown Fused Alumina Macro Brown Fused Alumina Micro
Al2O3 95,65 % 94,20 %
TiO2 2,42 % 2,79 %
Fe2O3 0,12 % 0,33 %
SiO2 0,92 % 1,34 %
CaO 0,35 % 0,33 %

AVAILABLE SIZES
Typical physical

PEPA Average grain size(μm)
F 020 850 – 1180
F 022 710 – 1000
F 024 600 – 850
F 030 500 – 710
F 036 425 – 600
F 040 355 – 500
F 046 300 – 425
F 054 250 – 355
F 060 212 – 300
F 070 180 – 250
F 080 150 – 212
F 090 125 – 180
F 100 106 – 150
F 120 90 – 125
F 150 63 – 106
F 180 53 – 90
F 220 45 – 75
F240 28 – 34