High Alumina Calcined Bauxite 75% 80% 85% 88% Al2O3 for Refractory Aggregate

• Customization: Available
• Refractoriness (℃): 1580< Refractoriness< 1770
• Shape: Block
• Model NO.: K-TY
• Sample: Provide for Free
• Al2O3 Content: 65-90%
• Application: Refractory, Ceramics, Aluminum Industry.
• Bulk Density: 2.45 - 3.15
• K2o+Ca2o: <0.04%
• Color: Grey or Yellow
• Type: Refractory Material
• Material: Alumina Cement
• Transport Package: 25kg/PP Bag, or 1000kg/Jumbo Bag According to Cust
• Specification: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 200mesh,
• Trademark: SWT-
• Origin: Henan. China
• HS Code: 250830000
• Production Capacity: 3000 T / Month

Product Description

High Alumina Calcined Bauxite 75% 80% 85% 88% Al2O3 For Refractory Aggregate

Bauxite is a mixture of minerals that contain various concentrations of hydrated aluminum oxides as well asimpurities,which is also called calcined bauxite or sintered 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.

Classification Introduction:

1.Classified according to the type of bauxite raw materials:
   (1) raw bauxite, alumina original ore (natural sedimentary rock class).
   (2) the calcined bauxite, the raw bauxite after high temperature calcination (1200 ~ 1700 ºC)

2.Calssified according to the different calcining kiln where the bauxtie is divided into:
   (1)Shaft kiln bauxite
   (2)Rotary kiln bauxite
   (3)Round kiln bauxite

3.Calcined Bauxite according to different uses for division:
   (1) the refractory grade bauxite
   (2) the grinding grade alumina
   (3) the welding grade bauxite

Bauxite has a lot of different specifications like

 

Granular ( 0-1mm 1-3mm 3-5mm 5-8mm) 
Powder ( 200mesh 325mesh 280mesh, 240mesh, 180mesh, 150mesh, 120mesh, 100mesh )
and big lump , the Al2O3 from 65-90%
we can also produce according to customers special requirement 
 

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 of our calcined bauxite

Raw material for High Alumina brick;
Raw material for Refractory castable;
Raw material for Ramming mix;
Raw material for Nozzle;
Raw material for slide gate block;
Raw material for Refractory motar;