Al2O3 88% Calcined Bauxite of China Bauxite Ore

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Min Order Qty:
25 m.t.
Supply Capability:
20000 m.t./month

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Product Description:

Product Description

Mingyue Bauxite and Calcined Bauxite:

 

Mingyue Bauxite, ie. bauxite ore, whose main content is Aluminium oxide with, who is department of hydrated

alumina containing impurities in appearance of earthy mineral;

 

Mingyue Calcined Bauxite is burnt bauxite, who is used for producing the existing uneven materin in nature --

alumina and aluminium. The purpose of calcining bauxite is to remove crystal water and improve the content of alumina. 

 

Mingyue Bauxite Secification:

 

Al2O3

Fe2O3

TiO2

K2O+Na2O

CaO+MgO

Bulk density

≥65

≤2.5

≤4.0

≤0.3

≤0.5

≥2.6

≥75

≤2.5

≤4.0

≤0.3

≤0.5

≥2.7

≥80

≤2.5

≤4.0

≤0.3

≤0.5

≥2.8

≥85

≤2

≤4.0

≤0.3

≤0.5

≥3.0

≥86

≤2

≤4.0

≤0.3

≤0.5

≥3.1

≥87

≤2

≤4.0

≤0.3

≤0.5

≥3.2

≥88

≤1.8

≤4.0

≤0.25

≤0.5

≥3.25

 

Mingyue Refractory Bauxite Level:

 

Level

Chemical Composition (%)

Refractoriness

(℃)

Bulk Density

(g/cm3)

Al2O3

CaO

Fe2O3

superfine

>85

<0.6

<1.4.0

>1790

>3.6

first grade

>80

<0.6

<3.0

>1790

>3.0

second grade+1

70~80

<0.8

<3.0

>1790

>2.8

sencond grade

60~70

<0.8

<3.0

>1770

>2.65

third grade

50~60

<0.8

<2.5

>1770

>2.55

Product Uses

Mingyue Bauxite and Calcined Bauxite:

1. Aluminum industry;

2. Precision casting;

3. Refractory industry;

4. Silica acid aluminum firefibre;

5. Mixed with magnesium oxide, it can be an nice bonding agent, especially for pouring entire steel teeming ladle lining;

6. Manufacture bauxite cement, grinding abrasives;

7. Ceramic industry, and chemical industry for making aluminium compounds.

Al2O3 88% Calcined Bauxite of China Bauxite Ore

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Fire resistance test method of doors and roller shutters: This standard specifies the fire resistance test method for roller shutter doors under standard fire conditions. The method is used to test the fire resistance of the ventilating duct when bearing the external fire (A duct) and internal fire (B duct). Fire resistance test of vertical ducts may be conducted referring to this standard. 1.Test specimen1.1 The test specimen is obtained by cutting from any part of the qualified metal tube unless otherwise relevant standard or mutual agreement specifies the cutting position of the metal tube. 1.2 Length of the specimen: L≈2.5D+50mm (D: outer diameter of the metal tube). The cut surface of the specimen must be perpendicular to the axis of the metal , and the seamed edge of the cut should be round off. Test method GB243-82 of metal tube necking 2. Test procedures 2.1 In the test, punch or press the metal tube into the tapered conical seat (see Figure) with a hammer or press machine, and make it uniformly diminished to the regulated shrinkage X which is calculated according to the following formula: Test method GB243-822 for metallic pipe necking: The inner wall of the seat cover used in the test should be polished, and has certain hardness and is coated with lubricating oil. Its conicity is 1:10, 1:5 or others in accordance with relevant standard provisions. If there is no provision, then adopt the conicity of 1:10. This standard is not suitable for: a) The pipeline whose fire resistance depends on the fire resistance of the ceiling; b) The pipeline with access door, unless otherwise the access door is included into the pipeline and tested together; c) The pipeline with two or three sides; d) Fume exhaust pipes;
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