Payment & Shipping Terms:
|Raw Material:||High Alumina Bauxite||Bulk Density:||3.0-3.5g/cm3|
Raw Bauxite , Rotary Kiln Bauxite , Calcined Bauxite , Shaft Kiln Bauxite
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.
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.
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
|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
|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
|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|
1 ) . In 1MT/1.25MT Big Bag
2 ) . In 1.25MT Big Bag
According To Customers' Reauirement.
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.
Contact Person: Xu