50% 60% 70% Al2O3 Alumina Calcined Bauxite Raw Material for Castable
Description:
Bauxite is also called bauxite or bauxite. Its main component is alumina, which is a hydrated alumina containing impurities and is a kind of earthy mineral. White or off-white, brown or light red due to iron. Density 3.45g/cm3, hardness 1~3, opaque, crisp. Extremely hard to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. It is mainly used for aluminum smelting and refractories.
Calcined Bauxite (aluminum-containing soil; bauxite) is also known as bauxite or aluminum ore. Bauxite is produced by calcining bauxite at high temperatures. The content of alumina in bauxite clinker exceeds 50%, with a density of 3.45 grams per cubic centimeter. The calcination can be carried out in vertical kilns, reverberatory kilns, or rotary kilns. The calcination temperature is usually between 1450 and 1600 degrees Celsius. The specific calcination temperature should be determined according to the grade of bauxite. Refractory bauxite products are the basic materials for industrial high-temperature equipment. With their characteristics of high temperature resistance, corrosion resistance, and moderate cost, they are widely used in metallurgy, building materials, and chemical industries. When choosing, attention should be paid to key indicators such as Al₂O₃ content, volume density, and refractoriness, to match the specific working conditions.
Specification:
|
Grade
|
Al2O3 %
|
Fe2O3 %
|
TIO2 %
|
K2O+Na2O %
|
CaO+MgO %
|
Bulk density g/cm3
|
|
50-60
|
50-60
|
≤3.0
|
≤4.0
|
≤0.3
|
≤0.5
|
≥2.45
|
|
60-70
|
60-70
|
≤3.0
|
≤4.0
|
≤0.3
|
≤0.5
|
≥2.65
|
|
75
|
75min
|
≤3.0
|
≤4.0
|
≤0.3
|
≤0.5
|
≥2.70
|
|
80
|
80min
|
≤3.0
|
≤4.0
|
≤0.3
|
≤0.5
|
≥2.80
|
|
85
|
85min
|
≤2
|
≤4.0
|
≤0.3
|
≤0.5
|
≥3.00
|
|
86
|
86min
|
≤2
|
≤4.0
|
≤0.3
|
≤0.5
|
≥3.10
|
|
87
|
87min
|
≤2
|
≤4.0
|
≤0.3
|
≤0.5
|
≥3.20
|
|
88
|
88min
|
≤1.8
|
≤4.0
|
≤0.25
|
≤0.5
|
≥3.25
|
|
90
|
90min
|
≤1.8
|
≤4.0
|
≤0.25
|
≤0.5
|
≥3.30
|
Application:
1. Aluminum refining industry. Used for national defense, aviation, automobiles, electrical appliances, chemicals, daily necessities, etc.
2.Precision casting
3.Used for refractory products. The refractory degree of high alumina bauxite clinker is as high as 1780 ℃, with strong chemical stability and good physical properties.
4.Aluminum silicate refractory fiber.
5.Using magnesium sand and alumina clinker as raw materials, and adding appropriate binders, the overall lining effect of pouring steel drums is excellent.
6.Manufacturing various compounds of alumina cement, grinding materials, ceramics industry, and chemical industry that can produce aluminum
Product Tags:
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50% 60% 70% Al2O3 Alumina Calcined Bauxite Raw Material For Castable Images
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