Raw Rotary Shaft Kiln Bauxite Block Shape Up To 1780 ℃ Strong Chemical Stability

Raw Bauxite , Rotary Kiln Bauxite , Calcined Bauxite , Shaft Kiln Bauxite

 

 

 

Details information

 

 

Bauxite is a mixture of minerals that contain various concentrations of hydrated aluminum oxides, as well as impurities. The primary ore minerals are gibbsite (alumina tri-hydrate), boehmite and diaspore (alumina monohydrates).

Gibbsite-rich bauxite is preferred as it can be refined at lower digestion temperatures than the other types of alumina bearing minerals.

Bauxite is usually reddish-brown, but can also be white, tan, and yellow, depending on the type and concentration of iron minerals present. It also has a wide range of textures, but is typically dull to earthy in luster and can look like clay or soil.

 

 

 

Application:

 

Refractory grade bauxite

 

Calcined bauxite is produced by sintering/calcining of low iron, low alkali containing raw bauxites at temperatures of 1600 - 1800 degree 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 the production of shaped and unshaped refractories for the steel industry, foundries, glass and cement plants.

Application
Refractory applications remain the premiere non-metal market for calcined bauxite which is mixed with binders and pressed, extruded, cast and shaped into a variety of forms that are then dried and transfered to kilns for firing. The calcined refractory grade bauxite is also used in unfired monolithic refractories.
It should be noted that 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 other high alumina refractory raw materials.

 

 

 

Physical And Chemical Properties

 

 

 

Shaft Kiln Bauxite

 

 

Items	Al2O3	Fe2O3	B.D.
86	86% min	2% max	2.9-3.15
85	85% min	2% max	2.8-3.10
84	84% min	2% max	2.8-3.10
83	83% min	2% max	2.8-3.10
82	82% min	2% max	2.8-3.0
80	80% min	2% max	2.7-3.0
78	78% min	2% max	2.7-2.9
75	75% min	2% max	2.6-2.8
70	70% min	2% max	2.6-2.8
50	50% min	2% max	2.5-2.55

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rotary Kiln Bauxite

 

 

Itams	Al2O3	Fe2O3	B.D.	K2o+Na2o	CaO+MgO	TiO2
88	88% min	1.5% max	3.25 min	0.25% max	0.4% max	3.8% max
87	87% min	1.6% max	3.20 min	0.25% max	0.4% max	3.8% max
86	86% min	1.8% max	3.15 min	0.3% max	0.5% max	4 % max
85	85% min	2.0% max	3.10 min	0.3% max	0.5% max	4% max
83	83% min	2.0% max	3.05 min	0.3% max	0.5% max	4% max
80	80% min	2.0% max	3.0 min	0.3% max	0.5% max	4% max
78	75-78%	2.0% max	2.8-2.9	0.3% max	0.5% max	4% max

 

 

Round Kiln Bauxite

 

 

Itams	Al2O3	Fe2O3	B.D.	K2o+Na2o	CaO+MgO	TiO2
90	90% min	1.8% max	3.4 min	0.3% max	0.5% max	3.8% max
89	89% min	2.0% max	3.38 min	0.3% max	0.5% max	4% max
88	88% min	2.0% max	3.35 min	0.3% max	0.5% max	4% max
87	87% min	2.0% max	3.30 min	0.3% max	0.5% max	4% max
86	86% min	2.0% max	3.25 min	0.3% max	0.5% max	4% max
85	85% min	2.0% max	3.20 min	0.3% max	0.5% max	4% max
83	83% min	2.0% max	3.15 min	0.3% max	0.5% max	4% max

 

 

 

 

Package:

 

 

1 ) . In 1MT/1.25MT Big Bag

 

2 ) . In 1.25MT Big Bag

 

 

 

According To Customers' Reauirement.

 

 

 

FAQ:

 

 

Q : What is your lead time?

 

A : It usually needs about 7-14 days after receiving the workable payment.

 

 

 

Q : Do you provide free samples?

 

A : Of course! Customized samples are needed. The mass production will be started after we get your confirmation on this sample. However, shipping costs are paid by you.

 

 

 

Q : What is your payments term?

 

A : We can accept 30% deposit, 70% balance to be against the BL copy or by LC, or other payment terms.