High Purity Bauxite Raw Materials for Refractory - 2024 Best Selling CNBM China
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- 10000000 m.t./month
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1.Structure of Calcined Bauxite Description
Bauxite (aluminous soil; Bauxite) is also called the alumina or bauxite, main ingredients are alumina, hydrated alumina containing impurities, is an earthy mineral. White or gray, brown and yellow or light red by iron. From 4 to 3.9 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle. Very difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminium, refractory material.
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) aluminium industry. Used in national defense, aerospace, automotive, electronics, chemical industry, daily necessities, etc.
(2) precision casting. Alumina clinker made after the mould precision casting processed into fine powder. Used in military industry, aerospace, communications, instrumentation, machinery and medical equipment department.
4. Calcined Bauxite Images
5. Calcined Bauxite Specification
| Place of Origin: | Henan, China (Mainland) | Shape: | Powder | Material: | Alumina Block |
| SiO2 Content (%): | 0 | Al2O3 Content (%): | ≥88% | MgO Content (%): | ≤0.4% |
| CaO Content (%): | 0 | Refractoriness (Degree): | Common (1580°< Refractoriness< 1770°) | CrO Content (%): | 0 |
| SiC Content (%): | 0 | Model Number: | BM9601 | Brand Name: | CUNSE |
| Bauxite Al2O3:: | ≥88% | Bauxite Fe2O3:: | ≤1.5% | Bauxite K2O+Na2O:: | ≤0.4% |
| Bauxite TiO2:: | ≤4.0% | Bauxite CaO+MgO:: | ≤0.4% | Bauxite Bulk Density:: | ≥3.15 g/cm3 |
| Bauxite Water Absorption:: | ≤4% | Bauxite Feature:: | Soluble in sulfuric acid and sodium hydroxide solution. | Bauxite Application:: | refractories, precision casting, etc. |
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.
Service:
24 hours a day consulting, disambiguation, the product has any problem in use process, we will give them to solve in the shortest time.
- Q:Who knows the fire resistant level of the rock wool color plate?
- Hello; Same with other unprotected steel, the fire endurance of the color steel?plate is generally 15 minutes. It is not a fireproofing material, let alone fire resistant level. If the color steel plate has sprayed fire retardant coating and the thermal insulation filling material in the core is rock wool fiber, it can achieve A level fireproofing requirements. The color steel?plate refers to the painted steel plate, which is a steel plate with organic coating. The color steel board is divided into the single plate, color steel composite board, floor support board, ect. It is widely used in large public buildings, public plants, portable dwelling, and integrated housing walls and roofings. I hope that will help you.
- Q:Could you tell me the fire-resisting time of class B fire proof door?
- Could you tell me the fire-resisting time of class B fire proof door?
- Q:Does anyone know the refractory temperature of fire-resistant glass?
- Ordinary glass will be completely liquefied in the furnace of about 1100 degrees for half an hour and will not deform below 600 degrees. toughened glass fire-resistant glass is the product of ordinary glass after being processed Glass will mainly burst after encountering fire. When unevenly heated or encountering sudden drastic changes in temperature, ordinary glass will burst if the sharp temperature difference is over 70-120 degrees and toughened glass will burst at 200 degrees. It is not yet clear of the bursting temperature for the refractory glass. If the overall glass is not heated evenly, it will have no significant change below 600 degrees, and it will deform with the increase of temperature until melting. The fire-resistant time of the glass you said is the time to heat the glass into the extreme temperature differences it can endure, which should not be more than 10 minutes
- Q:Who knows the refractoriness of high temperature lightweight firebricks?
- pores of high temperature lightweight refractory bricks is made by lightweight aggregate such as combustibles, foaming?agent, and hollow?sphere production with better thermodynamic stability. Refractoriness reaching 1200 ℃ or more is first grade refractories. fire resistance of building blocks of 100mm thick can reach 225 minutes, 200mm thick brick 480 minutes.
- Q:I would like to know if there is any requirement for refractories in the crucible type high-frequency smelting furnace Worry！ I hope you can help me! This time!
- High enough for high temperature resistance. Refractory materials for crucibles shall be subjected to a high temperature greater than 1700 DEG C and the softening temperature shall be greater than 1650 DEG c;
- Q:who knows how to classify the fire resistant levels of fireproofing material?
- Grade of fireproofing material: Class A: Incombustible building material, almost without burning. class A1: Non-combustible, no open flame,class A2: Non-combustible,it needs to measure smoke and be qualified. Class B1: Nonflammable building material: Nonflammable materials have good flame resistance function. when it contacts open fire or is under high temperature, it's difficult to burn and be spreading rapidly, and will stop burn after removing the combustion?source. Class B2: Combustible?building?materials: Combustible materials have good flame resistance function. when it contacts open fire or is put in the air at high temperature, it will immediately burst into flames, and easily result in the spreading of fire, such as wooden column, timber roof truss, timber beam, wooden stairs, etc. Class B3: Inflammability building materials, without any flame resisting effects, easy to burn, and has large danger of fire disaster.
- Q:How about the prospect of refractory material?
- is developing well. Many plants are required t o use fireproofing materials.
- Q:I wanna ask that magnesium oxide is refractory?
- Magnesium oxide. magnesium oxide has high refractory insulation properties. After above 1000 ℃ high temperature burning, it can be transformed into crystals. And it can be transformed into dead-burned magnesium oxide or sintered magnesia oxide until rising to above 1500 ℃. It has heat-resistant, non-conductive at room temperature and relatively poor thermal conductivity. Magnesium oxide is mainly used for the preparation of ceramic, enamel, refractory crucible and refractory bricks. I hope to help you
- Q:What are the fire endurance requirements of class A fire resistant door ?
- Fire endurance of class A fire resistant door is 1.5h. According to the latest fire door requirements, in FMA FMB FMC three forms, A, B and C represent categories, such as FMA on behalf of Class A fire doors (ie thermal insulation fireproof door). Fire endurances of class A,B and C fire doors are 0.5 1.0 1.5 2.0 3.0. Therefore, the fire resistance of fire door needs to be designed and the design paper will make it clear in general.
- Q:What is fire retardant coating mainly used for?
- The functions of refractory coating are as follows: 1. Non-intumescent fire retardant coating is mainly used for the fireproofing of wood, fiber board and other materials, and it is used in the surfaces of wood truss, roof, doors, windows and etc. Second, the intumescent fire retardant coating can be divided into non-toxic intumescent fire retardant coating, expansible fire retardant coating emulsions, solvent-based fire retardant coating. 3. Non-toxic intumescent fire retardant coating can be used to protect cables, polyethylene pipes and insulation board. 4, The expansible fire retardant coating emulsion and solvent-based fire retardant coating can be used for fireproofing of buildings, electricity power, and cables. 5. New fire retardant coating: Transparent fire retardant coating, water-soluble intumescent fire retardant coating, fireproof emulsion paint, polyvinyl acetate emulsion fire retardant paint, water-soluble intumescent fire retardant paint drying at room temperature, fire insulation coating polyolefin fire retardant coating, modified high chloropolyethylene fire retardant paint, chlorinated rubber fire retardant coating, firewall coating, intumescent coatings, wire and cable fire retardant paint, new fire retardant coating, casting fire retardant coating and so on.
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High Purity Bauxite Raw Materials for Refractory - 2024 Best Selling CNBM 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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