Refractory Grade Calcined Bauxite 75, 80, 85, 86, 87, 88

Product Introduction

Bauxite (Al₂O₃·nH₂O), comes in three different forms: Gibbsite(Al(OH)3), Boehmite(AlO(OH), andDiaspore(AlO(OH). Most bauxite Deposits in China are in the third form.

The color of bauxite usually is white or grey, however when the iron content is high, the color becomes brown and light red. Bauxite is opaque, brittle, and has a high melting point. It is insoluble in water, but can be soluble in sulfuric acid and sodium oxide solution.

Calcined bauxite is one of the principal ore of aluminum. Calcined bauxite contains hydrous aluminum oxides and aluminum hydroxides, formed through the laterization of aluminous rocks in tropical and subtropical areas .calcined bauxite is obtained by calcining (heating)superior grade bauxite at high temperature (from 85O℃ to 1600℃) .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%.the heating is carried out in rotary kilns.

Applications

1.Aluminium metallurgy.

2.Precision casting/Investment casting: bauxite aggregate fines can be made into mold for precision casting.

3.Refractory: high alumina bauxite's refractoriness can reach 1780°C.

It is charactered by good chemical stability and mechanical performance.(Al2O3 ≥48% with low Fe2O3)

4.Aluminium silicate refractory fiber: The high alumina bauxite aggregate can melt under2000°C-2200°C in the electric arc furnace. After a series of processing, it can become aluminium silicate refractory fiber, which can be made into fiber blanket, plate, cloth…..

5.Mixing magnesia and bauxite grog with binders to pour the molten steel ladle for better overall lining performance.

6.Producing bauxite cement.

7.Abrasives.

8.Ceramics industry.

9.Chemistry industry for all kinds of aluminium compound.

Packaging & Delivery

Packaging Detail: 1T ,1.5T jumbo bags. Each 20ft container as customer requirement

Delivery Detail: within 15 to 20days

Yangquan ZG Refractories Co., Ltd. Is located in Yangquan, Shanxi, China. Local bauxite enjoys a high reputation of high grade, less impurities and low iron content. Yangquan is the largest refractory producing base of China and famous in the world market.

The company has established full set of production lines from raw material to the finished products during the past decades of years, . Now we are having co-operations with many refractory research institutes in China, keep developing better products to meet customers expectations.

The company has been equipped with advanced inspecting facilities and strong technical power, as well as the complete after-sale service system. Full lines of high quality products with reasonable prices makes our products been well reputed in the world market by applications in metallurgic, military, aerospace and other industries.

The main products includes Bauxite ores(Al2O3 60-68%), Flint(Al2O3 44-48%, Fe2O3<2%), Calcined Bauxite, Castables, Aggregates, Powders, Casting Materials and Flint Powders;High-alumina brick ,fire clay brick ,light-weight mullite brick and other refractories products . Our products has been accepted by vast number of customers, and can meet the developing social economical requirements.

Welcomes the visit and co-operations with customers all over the world, we are look forward to establishing a friendly and mutual benefit business relationships with you.