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Brown alumina

[Product Specifications]: Various specifications of granular sand, section sand, fine powder, micro powder

[Production capacity]: 80,000 tons / year

[Scope of application]: Widely used in refractory materials, consolidated abrasives, coated abrasives, sand blasting, precision casting, casting coatings, various high-end products, craftsmanship or hardware, etc. Castables, nozzles, etc.

【product description】:

Brown corundum is made of high-quality abrasive-grade alumina as a raw material, supplemented with auxiliary materials, and then refined in an electric arc furnace at a high temperature of 2250 ° C or higher. After this, secondary refining is performed by a high-strength magnetic separator to remove impurities, and the fire resistance is above 1850 ° C.
The RS brown corundum produced by our company has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient, and corrosion resistance. This product has the characteristics of no explosion, no chalking, no cracking in the application process, and is often used in abrasives and refractory raw materials industries.

Brown corundum can be divided into smelting methods: dumping furnace and fixed furnace.
The main products are: brown corundum barmac sand, roller sand, ball mill sand, section sand, P sand, fine powder, micro powder.
Special treatment products are: high temperature calcined brown corundum, medium temperature calcined brown corundum, water washing, pickling, dry cleaning (air washing). ...

18603798888 Sales Hotline: 18603798888

咨询产品报价 疑难解答

Brown corundum is made of high-quality abrasive-grade alumina as a raw material, supplemented with auxiliary materials, and then refined in an electric arc furnace at a high temperature of 2250 ° C or higher. After this, secondary refining is performed by a high-strength magnetic separator to remove impurities, and the fire resistance is above 1850 ° C.
The RS brown corundum produced by our company has the characteristics of high purity, good crystallization, strong fluidity, low linear expansion coefficient, and corrosion resistance. This product has the characteristics of no explosion, no chalking, no cracking in the application process, and is often used in abrasives and refractory raw materials industries.

Brown corundum can be divided into smelting methods: dumping furnace and fixed furnace.
The main products are: brown corundum barmac sand, roller sand, ball mill sand, section sand, P sand, fine powder, micro powder.
Special treatment products are: high temperature calcined brown corundum, medium temperature calcined brown corundum, water washing, pickling, dry cleaning (air washing).

Application range

Abrasives: abrasive wheels, abrasive belts, sandpaper, abrasive cloth, cutting blades, sandblasting technology, grinding, wear-resistant flooring, waterjet cutting, coated abrasives, consolidated abrasives, etc.
Refractory materials: castables, refractory bricks, ramming materials, slides, nozzles, ladles, furnace linings, precision casting, etc.

Production Process

Brown corundum dumping furnace smelting Brown corundum fixed furnace smelting
Sand making line
Cooling process Sand making line
Pickling workshop
package Pickling workshop

Technical Parameters

Physical and Chemical Index of Ruishi Brown Corundum

use specification Main chemical composition% Magnetic substance%
Al2O3 Fe2O3 SiO2 TiO2
Abrasives F 4 # —80 # ≥95 ≤0.3 ≤1.5 ≤3.0 ≤0.05
90 # —150 # ≥94 ≤0.03
180 # —240 # ≥93 ≤0.3 ≤1.5 ≤3.5 ≤0.02
P 8 # —80 # ≥95.0 ≤0.2 ≤1.2 ≤3.0 ≤0.05
100 # —150 # ≥94.0 ≤0.03
180 # —220 # ≥93.0 ≤0.3 ≤1.5 ≤3.5 ≤0.02
W 1 # -63 # ≥92.5 ≤0.5 ≤1.8 ≤4.0
Refractory Segment sand 0-1mm
1-3mm
3-5mm
5-8mm
8-12mm
≥95 ≤0.3 ≤1.5 ≤3.0
25-0mm
10-0mm
50-0mm
30-0mm
≥95 ≤0.3 ≤1.5 ≤3.0
powder 180 # -0
200 # -0
320 # -0
≥94.5 ≥93.5 ≤0.5 ≤1.5 ≤3.5

Note: F is the specification for fixed abrasive and sandblasting
P is the specification for coated abrasives
W is fine powder, 320 # is W40

Brown corundum physical properties:
project index
colour Dark brown (dark blue after calcining)
Crystal form Trigonal system
Hardness (Mohs) ≥9.0
Melting point (℃) 2250
Maximum use temperature (℃) 1900
True density (g / cm3) ≥3. 90
Coefficient of linear expansion (0—1600 ° C) 7-9

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