Refractory Bauxite

Refractory Bauxite is produced by sintering and calcining low iron, low alkali containing raw bauxites at temperatures of 1600 – 1800 degrees Celsius. In this calcination process, the high refractory mineral phases corundum and mullite are formed. Refractory grade bauxite has high refractoriness, good mechanical strength, and moderate slag resistance. Therefore calcined bauxite is one of the most important raw materials for producing shaped and unshaped refractories for the steel industry, foundries, glass, and cement plants.

$300.00$500.00 / MT

In the non-metallurgical industry, bauxites with refractory grades have been applied as raw materials to produce high-alumina refractories for both shaped and unshaped. Nowadays, China has a 95% market share. Refractories are insulating materials that maintain their strength and chemical properties at high temperatures. They are used to line boilers, furnaces, kilns, reactors.
Refractory applications remain the premiere non-metal market for calcined bauxite, mixed with binders and pressed, extruded, cast, and shaped into a variety of forms that are then dried and transferred to kilns for firing. The calcined refractory grade bauxite is also used in unfired monolithic refractories. Another source of materials suitable for refractory use is the calcined bauxite used to produce brown fused alumina, which has higher mechanical and chemical corrosion resistance than another high alumina refractory raw materials.

Specification for Calcined Refractory Bauxite

Colour:light yellow/dark grey
Particle shape:Angular
Bulk density:min 3.35 g/cm3
Moisture content:max 0.3%

Available  Refractory Bauxite 

 Item CR90 CR88 CR87 CR85 CR80
 Al2O3(%) 90.0min 88.0min 87.0min 85.0min 80.0min
 SiO2(%) 3.5max 5.5max 7.0max 8.0max 10.0max
 Fe2O3(%) 1.5max 1.6max 1.8max 2.0max 2.5max
 TiO2(%) 3.8max 4.0max 4.0max 4.0max 4.0max
 CaO+MgO 0.35max 0.40max 0.40max 0.40max 0.50max
 K2O+Na2O 0.35max 0.40max 0.40max 0.40max 0.50max
 B.D(gm/cc) 3.35min 3.25min 3.20min 3.10min 2.90min
 Moisture 0.3max 0.3max 0.3max 0.4max 0.5max

Available Grain Size 

0-1mm; 1-3mm; 3-5mm; 5-8mm; 16-30mesh; 30-60mesh; 120mesh; 200mesh; 325mesh or as customer’s requirement.


1MT Jumbo bag

Standard exporting package for sea transportation or air delivery

Special packing requirement is acceptable


Weight1000 kg
Dimensions100 × 100 × 100 cm


  1. Daniel (verified owner)

    Very fast delivery.

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