Raw Materials for Refractory:Refractory Grade Calcined Bauxite of CNBM in China
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- Tianjin
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- 11 m.t.
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- 10000000 m.t./month
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Refractory Grade Calcined Bauxite of CNBM in China
1.Structure of Calcined Bauxite Description
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 can 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 75% to 90%.
2.Main Features of the Calcined Bauxite
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 there. By 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.
3.Main usage of the Calcined Bauxite
1) The bauxite for aluminum industry in defense, aerospace, automotive, electrical, chemical, and daily supplies; 2) Bauxite clinker processed into fine powder and made after the casting mold. Used in military, aerospace, communications, instrumentation, machinery and medical equipment sector; 3) The bauxite can be used in refractory products. The refractoriness of high-alumina clinker is up to 1780 . Its features are chemical stability strong, and physical properties of sound; 4) It can manufact alumina cement, abrasive materials and aluminum compounds.
4. Calcined Bauxite Images
5. Calcined Bauxite Specification
Item | Al2O3 (min) | Fe2O3 (max) | TiO2 (max) | SiO2 (max) | KO2+NaO2 (min) | CaO+MgO (min) | Bulk Density(g/cm3) |
70 | 70% | 2.5% | 2.9min | ||||
75 | 75% | 3.0% | 4.0% | 8% | 0.3% | 0.6% | 2.7min |
80 | 80% | 3.0% | 4.0% | 8% | 0.3% | 0.6% | 2.8min |
85 | 85% | 2% | 4.0% | 8% | 0.3% | 0.6% | 3.0min |
86 | 86% | 2% | 4.0% | 8% | 0.3% | 0.6% | 3.2min |
87 | 87% | 2% | 4.0% | 7% | 0.3% | 0.6% | 3.2min |
88 | 88% | 1.8% | 4.0% | 7% | 0.25% | 0.6% | 3.25min |
90 | 90% | 1.8% | 4.0% | 7% | 0.25% | 0.6% | 3.25min |
1) Al2O3≥83%
2) Fe2O3≤2.0%
3) K2O+Na2O≤0.6%
4) B.D.≥3.10/cm3
5) Water Absorption≤4.5%
6) Sizes: Lumps /Grains:0-1mm,1-3mm,3-5mm,5-8mm /Powders:100mesh, 200mesh,325mesh
6.FAQ of Calcined Bauxite
1). Q: Are you a factory or trading company?
A: We are a factory.
2). Q: Where is your factory located? How can I visit there?
A: Our factory is located in ShanXi, HeNan, China. You are warmly welcomed to visit us!
3). Q: How can I get some samples?
A: Please connect me for samples
4). Q: Can the price be cheaper?
A: Of course, you will be offered a good discount for big amount.
- Q:What are the new refractories?
- The zirconium oxide produced in Gao Ha in Zibo can reach 2500 degrees.
- Q:How to divide fire resistant level of fire door?
- Fire resistant level of fire door【Class A fire door】. Class A fire door is also called complete fire door. It can meet the requirement of fireproof thermal insulation and refractory integrity at the same time in specified time. Fire resistant levels are 0.5h(Grade C), 1.0h(Grade B), 1.5h(Grade A) and 2.0h, 3.0h. 【Class B fire door】Class B fire door is also called part heat insulation fireproof door. Its requirement of fireproof and thermal insulation performance is 0.5h. Refractory integrity levels are 1.0h, 1.5h, 2.0h and 3.0h respectively. 【Class C fire door】Class C fire door is also called not thermal insulation fireproof door. Ther is no requirement of its fire resistance and thermal insulation. It only meets the requirement of refractory integrity in specified refractory time. The grading of refractory integrity is 1.0h, 1.5h, 2.0h and 3.0h respectively. There is the content of not thermal insulation fire door in British BS standard.
- Q:Where is the distributing center of refractory materials in China?
- The construction of Gongyi Chinese refractory chemical industry professional market is a street in Yongan to implement the spirit of the six plenary session of the four session of the Gongyi municipal Party committee, the adjustment of economic structure, an important step in developing the service industry out of the. First, to promote the rapid development of the third industry. Through the improvement of refractory trade logistics system, make Yongan do truly become the first-class refractories trade and logistics center, driven by the refractory industry from the production area to the exhibition, logistics field extension and transformation, become refractory chemical industry center, Yongan office to promote the optimizing and upgrading of economy. Two is to promote intensive land development. Through the integration of resources, the unified planning of the reserved land, intensive development according to the standard of the city, the introduction of powerful investors, construction of large-scale projects. Three is to further create a business atmosphere in Yongan. Refractory chemical professional market operation, will promote the overall development of Yongan to do business, increase the flow of people, logistics, information flow, capital flow, more to promote the rapid development of the third industry in Yongan office.Gongyi Chinese refractory chemical industry professional market completion, will further promote the development of Yongan street service industry, accelerate the pace of economic restructuring, will run the streets of industrial upgrading has played a great role in promoting. Yongan road street is unprecedented high spirited gesture, innovation and development opportunities, so that industrial upgrading and optimization of the pattern to accelerate the realization of, we are convinced that Yongan's tomorrow will be better!
- Q:how to divided the external wall thermal insulation materials fire rating
- Level A: Incombustible building material is a material that does not occur any burning. Level A1: Noncombustible means no open fire. Level A2 It is noncombustible, and should measure smoke to be qualified. Level B1: Nonflammable building material: Non-flame material has good flame resistance. It is difficult to fire under the condition of open fire in the air or high temperature, and it is not easy to quickly spread, and when the combustion?source is removed, the combustion will stop immediately. Level B2: Combustible?building?materials: Flame material has a good flame resistance. In case of fire in the air or at high temperature, it will immediately burst into flames, and easily lead to the spread of fire, such as wooden column, timber roof truss, timber beam and wooden stairs. Level B3: inflammable building material has no any flame resisting effects, and is easy to burn, so the fire risk is high.
- Q:What's the fire resistance test method of doors and roller shutters?
- Fire resistance test method of doors and roller shutters: This standard specifies the fire resistance test method for roller shutter doors under standard fire conditions. The method is used to test the fire resistance of the ventilating duct when bearing the external fire (A duct) and internal fire (B duct). Fire resistance test of vertical ducts may be conducted referring to this standard. 1.Test specimen1.1 The test specimen is obtained by cutting from any part of the qualified metal tube unless otherwise relevant standard or mutual agreement specifies the cutting position of the metal tube. 1.2 Length of the specimen: L≈2.5D+50mm (D: outer diameter of the metal tube). The cut surface of the specimen must be perpendicular to the axis of the metal , and the seamed edge of the cut should be round off. Test method GB243-82 of metal tube necking 2. Test procedures 2.1 In the test, punch or press the metal tube into the tapered conical seat (see Figure) with a hammer or press machine, and make it uniformly diminished to the regulated shrinkage X which is calculated according to the following formula: Test method GB243-822 for metallic pipe necking: The inner wall of the seat cover used in the test should be polished, and has certain hardness and is coated with lubricating oil. Its conicity is 1:10, 1:5 or others in accordance with relevant standard provisions. If there is no provision, then adopt the conicity of 1:10. This standard is not suitable for: a) The pipeline whose fire resistance depends on the fire resistance of the ceiling; b) The pipeline with access door, unless otherwise the access door is included into the pipeline and tested together; c) The pipeline with two or three sides; d) Fume exhaust pipes;
- Q:What is the fire endurance of ceramsite concrete blocks?
- What is mentioned in fire?safety?rules is that the fire endurance of 240mm thick hollow brick of ceramsite concrete is 2.9h, so 190mm thick hollow brick is 3h. B05 thickness(mm), fire endurance(h). Combustion performance 100 4.0. Non-combustible component 150 6.0200 8.0300 〉8.0B06 100 〉4.0150 〉6.0200 〉8.0300〉8.0: The fire endurance performance of building blocks wall in the table is taken from the Tianjin Construction Standard "light steam pressing aerated?concrete?block" DB / T29-128.
- Q:How to do environmental impact assessment for refractory Co., Ltd.
- The preparation of a report or statement. During the compilation process, any problems should be actively communicated with the construction side. For example, dust collector selection, environmental protection investment, total emission approval. (especially the total emission, you must let the construction side and communicate with the environmental protection bureau to get the total amount, otherwise you write the EIA does not make any sense.) Generally speaking, the preparation of the report is longer, about forty days; and the preparation of the report table is shorter, about fifteen days.
- Q:What does fire-resistant insulation coating have?
- Refractory thermal insulation material mainly refers to the inorganic thermal insulation material and composite thermal insulation material. According to the shape, it can be divided into: Finishing of fibrous shape, mineral?cotton, rock wool, glass wool, aluminum?silicate?wool, ceramic fiber, etc. Diatomaceous earth of microporous pile, calcium silicate, expanded perlite,expanded vermiculite,aerated concrete, etc. Foam glass of bubble shape, volcanic ash glass, foamed clay, foamed?concrete, gelatine powder polyphenyl granule heat insulating slurry of pasty form, etc. Their common feature is fire-retardant and firproof. It can be used in buildings with high requirements of fire?rating. Calcium silicate, aluminum silicate and asbestos can also be used for piping insulation of heat transport with high temperature. Hope it is helpful to you.
- Q:who knows the uses of refratories?
- Of course, the role of the refractory material is fireproof, generally used in large buildings. It can reduce casualties and economic losses caused by the fire. it also can be used on the chemical instruments. ! !
- Q:What substitutes are available for high-end refractories in addition to zircon sand?
- If you want to use environmentally friendly products, please use recycled Mo powder.
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Raw Materials for Refractory:Refractory Grade Calcined Bauxite of CNBM in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 11 m.t.
- Supply Capability:
- 10000000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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