- Carbonate[10]
- Countertops[3]
- Cobbles & Pebbles[10]
- Sand[10]
- Granite[6]
- Tombstones and Monuments[10]
- Lime[3]
- Barite[10]
- Bentonite[10]
- Dolomite[10]
- Kaolin[10]
- Mica[9]
- Other Non-Metallic Mineral Deposit[8]
- Perlite[3]
- Sepiolite[10]
- Talc[10]
- Vermiculite[10]
- Wollastonite[10]
- Bauxite Ore[3]
- Other Non-Metallic Minerals & Products[10]
- Other Quartz Products[8]
- Refractory[9]
- Contact Person : Mr. zhang xuemin
- Company Name : Hebei Yunsong Trade Co., Ltd.
- Tel : 86-311-89285696
- Fax : 86-311-85068422
- Address : Hebei,Shijiazhuang,Room610,Jiatai Business Center 8#Meiji street,Chang`an district
- Country/Region : China
- Zip : 050500
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Raw bauxite
calcined bauxite specification:Grade | AL2O3 | FE2O3 | TIO2 | K2O+Na2O | CaO+MgO | Bulk density |
75 | 75min | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.70 |
80 | 80min | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.80 |
85 | 85min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.00 |
86 | 86min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.10 |
87 | 87min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.20 |
88 | 88min | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.25 |
90 | 90min | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | |
Size: as buyer’request
Packing: usually we packing in big bag, 1.25mt/bag; we could pack as buyer’request
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 85OC to 1600C) .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%to88%.the heating is carried out in rotary kilns.
raw bauxite price