High Alumina 87% Al2O3 Rotary Calcined Bauxite Powder for Welding Flux

• Customization: Available
• Feature: Long Time Materials
• Refractoriness (℃): Refractoriness> 2000
• Model NO.: YRD-039
• Shape: Powder, Granular
• Application: Refractory Abrasive Chemicals and High Aluminum CE
• Al2O3: 85%Min
• Fe2o3: 2.5%Max
• Size: 0-100mm
• Bulk Density: 2.9 Min
• Moisture (%): <0.5%
• Appearance: Granular or Powder
• Type: Refractory Material
• Material: Bauxite Ore
• Transport Package: 25kg/Bag, 500kg/Bag
• Specification: 1-2mm, 2-3mm, 3-5mm, 200mesh etc
• Trademark: YONGRUIDA
• Origin: China
• HS Code: 25083000
• Production Capacity: 5000 Tons Per Month

Product Description

Calcined bauxite is one of the principal ore of aluminum. Rotary kiln calcined bauxite is obtained by calcining superior grade bauxite at high temperature (from 850ºC to 1600ºC) in the rotary kiln. This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57% to 58% in raw bauxite, calcined bauxite has an alumina content of 84% to 88%.

Besides, through calcination, the density and refractory resistance will also be improved to varying degrees. The grade of bauxite can be increased greatly.

The calcined bauxite can be processed into bauxite sand and bauxite powder of different particle sizes, both of which can be directly used as refractory sand. It has a very high status in the field of refractory materials.Features and advantages of our Refractory grade calcined bauxite :
1)low iron (Fe2O3) content ,less than 2.0%,
2)2)big bulk density
3) other impurity is very low,as we select raw material for one time and second time after discharge from furnace 4)efficient supplying capability
5) competitive price and strict quality management
 
Application of our refractory calcined bauxite:
high alumina refractory bricks,corundum bricks, refractory castable

Specification of our hot seller Refractory grade CALCINED BAUXITE:

Item	AL2O3(%)	FE2O3(%)	TIO2(%)	K2O+Na2O(%)	CaO+MgO(%)	Bulk density (g/cm3)
YRD-80	≥80	≤2.5	≤4.0	≤0.6	≤0.6	≥2.8
YRD-85	≥85	≤2	≤4.0	≤0.6	≤0.6	≥3.0
YRD-86	≥86	≤2	≤4.0	≤0.6	≤0.6	≥3.1
YRD-87	≥87	≤2	≤4.0	≤0.6	≤0.6	≥3.2
YRD-88	≥88	≤1.8	≤4.0	≤0.6	≤0.6	≥3.25

Packing of our refractory grade calcined bauxite:
new and strong woven bags 50kg,1000kg,1250kg,1300kg,2000kg ,or upon customers' request
 
Normal aggregate size of 0-1mm,1-3mm,3-5mm,5-8mm,0-10mm,5-10mm,0 -30mm, 5-30mm,
powder bauxite material with 80mesh,100mesh,150mesh,200mesh,325mesh.
 
Taking strict quality management ,our CALCINED BAUXITE pass inspection by SGS,BV ,AHK etc international inspection companies.