2020 Quality Wholesaler Abrasive Grade Calcined Bauxite for Brown Fused Alumina

• Customization: Available
• Feature: Long Time Materials
• Refractoriness (℃): 1770< Refractoriness< 2000
• Model NO.: YZCBA
• Low Iron: Low Impurity
• High Refractoriness: Good Price
• Type: Refractory Material
• Material: Alumina Block
• Transport Package: Jumbo Bag
• Specification: SGS
• Trademark: TOPIC
• Origin: Henan, China
• HS Code: 2508300000
• Production Capacity: 3000mt/M

Product Description

Abrasive grade bauxite, the feedstock for brown fused alumina, is prepared from low silic, low alkali material that is alcined at 
 temperatures of approximately 1100 C. The minimum alumina content of 80% on a calcined basis is normally required for this 
application. And the upper limit on the silica content is 5%. Titania is ideally in the range of 2% to 4%. And low concentrations of 
alkalies are a requisite in order to minimize the formation of a glass phase. Besides these strict chemical specifications, particle 
size is especially critical for abrasive production. The upper limit on particle size is 50mm with the lower threshold set at a 100 
mesh screen size.
 
Application of our abrasive grade calcined bauxite:
Some calcined bauxite is used directly as an inexpensive abrasive product, but by far the largest amount is used as the feedstock 
for the manufacture of brown used alumina. Brown fused alumina is produced by the electrofusion of calcined bauxite in electric 
arc furnaces at temperatures in excess of 2000 ºC
Specification of our hot seller Abrasive grade CALCINED BAUXITE:

Item name	YZCBA-83	YZCBA-85	YZCBA-87
Al2O3	83.0%min	85.0%min	87.0%min
SiO2	7.5%-9.0%	5.6%-7.5%	3.0%-5.6%
Fe2O3	2.5%max	2.0%max	1.6%max
TiO2	4.2%max	4.0%max	3.6%max
CaO	0.8%max	0.6%max	0.5%max
Na2O+K2O	0.5%max	0.5%max	0.5%max
CaO+MgO	1.0%max	0.8%max	0.8%max
Moisture	0.05%max	0.04%max	0.03%max
LOI	0.5%max	0.4%max	0.4%max
Bulk density	2.70gm/cc	2.75gm/cc	2.80gm/cc

Packing of our abrasive grade calcined bauxite:
new and strong woven bags 1000kg,1250kg,1300kg,2000kg ,or upon customers' request
Normal aggregate size 0-30mm,0-50mm or as per customers' request
Taking strict quality management ,our CALCINED BAUXITE pass inspection by SGS,BV ,AHK etc international inspection companies.