Factory of Bauxite Powders Calcined Bauxite for Production of Alumina, Refractories, Abrasives

• Refractoriness (℃): 1770< Refractoriness< 2000
• Feature: Long Time Materials, Instant Materials
• Type: Refractory Material
• Shape: Powder
• Material: Alumina Cement
• Al2O3 Content: 80,83,85,88,90
• Model NO.: Bauxite
• Density: 2.9,3.15,3.2,3.3
• Water Absorption: 7,6,5,4
• Usage: High Alumina , Cement Refractory
• Transport Package: Big Bag or Customer′request
• Specification: 80, 85, 88, 90
• Trademark: xs
• Origin: Shanxi
• HS Code: 25060000
• Production Capacity: 20000ton

Product Description

 

Products introduction and index :

The hydrated aluminum oxide minerals are gibbsite, boehmite and diaspore. Both boehmite and diaspore are monohydrate and have the same chemical compositions, but diaspore is harder and has a higher specific gravity than boehmite. Gibbsite is an aluminum trihydrate mineral. 

Bauxite Powder Formula: Al2O3 + SiO2 + TiO2 + Fe2O3

Bauxite Powder Composition:
a) Bauxite is an omnibus term (like wad, limonite, and gummite), widely accepted and used to describe a mixture of more or less hydrated aluminum oxides, but not used as a proper mineral name.

b) The specific minerals are gibbsite (Al[OH] 3 ), boehmite (AlO[OH]), and diaspore (HAlO 2 ). In the common mixture any crystals will be microscopic and probably indistinguishable; thus the word is still useful.

For the Bauxite
 

1. High Alumina Bauxite ( Al₂O₃ Content 85% above)

  Al₂O₃  Refractory Grade 85-87% , Abrasive Grade >= 86%  , Welding Grade  >= 87%
  SiO₂    Refractory Grade 6-7 % , Abrasive Grade  5-6 %
  Fe₂O₃ Refractory Grade : 1.6-2%   Abrasive Grade <= 2%
  TiO₂ Refractory Grade : 3.5-4 %   Abrasive Grade <= 4-4.5%
  K₂0+Na₂O+CaO+MgO  Refractory Grade : 0.5-1 %   Abrasive Grade <= 0.5-1%

Bulk density :   Refractory grade : 3.10-3.20g/cm³  Other Grade No special Requirement .
Loss on Ignation (L.O.I.) <= 0.3%

Common Bauxite requried Test Items :

Refractory grade : Al₂O₃ >=  80%   Fe₂O_{3 :}<= 2%  Bulk Density : >= 2.8g/cm³  Size and Moisture according customer requirement .

Iron Bauxite ( High Fe)  Test Items :

 Al₂O₃ >=  80%   Fe₂O_{3 :}<= 4-10%  TiO₂ <= 4%  SiO₂ <= 7% , Size and Moisture according customer requirement .

Raw Bauxite :

 Al₂O₃ >=  70-73%  Fe₂O₃ ≈ 1.5%  TiO₂ <= 4%  SiO₂ <= 6%, L.O.I 14-15% , K₂0+Na₂O+CaO+MgO ≈ 0.5-1% ,  Size and Moisture according customer requirement .
 

Product Usage

1.Aluminum smelting industry

2.Precision casting. Bauxite clinker is processed into fine powder to make precision casting, instruments and machinery after casting.

3.For refractory products. The high bauxite clinker has a fire resistance of up to 1780 ° C and strong chemical stability.

4.Aluminosilicate refractory fiber. It has the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity and resistance to mechanical vibration. Used in various industries such as iron and steel, nonferrous metallurgy, electronics, petroleum, chemical industry and Yu. It puts high-aluminum clinker into a high-temperature electric arc furnace with a melting temperature of about 2000 ~ 2200 ºC. After high-temperature melting, high-pressure high-speed air or steam blowing and cooling, it becomes a white "cotton"-aluminum silicate Refractory fiber. It can be pressed into fiber blankets, boards or woven into cloth instead of refractory bricks lined with high-temperature furnaces in smelting, chemical and glass industries. Firefighters can use refractory fiber cloth to make clothes.

5.Using magnesia and bauxite clinker as raw materials, adding appropriate binding agent, it is used for pouring the overall barrel lining of the steel drum.

6.Manufacture of alumina cement, abrasive materials, ceramic industry and various compounds that can be made of aluminum.




Products Index :

Grade	Al2O3	Fe2O3	TiO2	CaO+MgO
1.	≥85	≤1.0	≤4.0	≤0.8
2.	≥80	≤1.5	≤5.0	≤1.0
3.	≥70	≤2.0	≤5.0	≤1.0
Size: 0-1mm, 1-3mm, 3-5mm, 5-8mm,......

Item	Al2o3 min	Fe2o3 max	TiO2max	Sio2max	KO2+NaO2min	CaO+MgOmin	Bulk Density
75	75%	3.0%	4.0%	8%	0.3%	0.6%	>2.7(g/cm3)
80	80%	3.0%	4.0%	8%	0.3%	0.6%	>2.8(g/cm3)
85	85%	2.0%	4.0%	8%	0.3%	0.6%	>3.0(g/cm3)
86	86%	2.0%	4.0%	8%	0.3%	0.6%	>3.2(g/cm3)
88	88%	1.8%	4.0%	7%	0.25%	0.6%	>3.25(g/cm3)
90	90%	1.8%	4.0%	7%	0.25%	0.6%	>3.25(g/cm3)
Size:0-1mm 1-3mm 3-5mm 5-8mm or Customized

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