Raw Materials for Refractory:Calcined Bauxite with Low Price Made in China
- Ref Price:
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 2000 m.t./month
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Quick Details
| Place of Origin: | Shanxi, China (Mainland) | Shape: | Block | Material: | Alumina Block |
| SiO2 Content (%): | 5-19% | Al2O3 Content (%): | 75-89% | Refractoriness (Degree): | Common (1580°< Refractoriness< 1770°) |
| CrO Content (%): | None | SiC Content (%): | None | Model Number: | 78,80,83,85,86,87,88,89 |
| Brand Name: | Jialun | Fe2O3: | 2%max | K2O+Na2O: | 0.25-0.4% |
| CaO+MgO: | 0.4-0.6% | Bulk Density: | 2.8-3.30 |
Packaging & Delivery
| Packaging Details: | 25 kg pvc bag and 1 mt big bag |
| Delivery Detail: | within 10 days after receipt your advance payment |
Introduction of 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 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%.
Specifications of Calcined bauxite
Grade | AL2O3 | SIO2 | FE2O3 | TIO2 | K2O+Na2O | CaO+MgO | Bulk density |
HX75 | 75min | ≤17 | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.70 |
HX80 | 80min | ≤12 | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.80 |
HX85 | 85min | ≤8 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.00 |
HX86 | 86min | ≤7 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.10 |
HX87 | 87min | ≤6 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.20 |
HX88 | 88min | ≤5 | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.25 |
HX90 | 90min | ≤3 | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.3 |
Moisture(max) | 0.50% | ||||||
Usage of Calcined bauxite
1.Aluminium industry.
2.Precision casting.
3.Refractory industry.
4.Silicic acid aluminium firefibre
5.Mixed with magnesium oxide,it can be an nice bonding agent,especially for pouring entire steel teeming ladle lining
6.Manufacture bauxite cement,grinding abrasives.ceracmic industry,and chemical industry for making aluminium compounds
- Q:what textures of furnace refractories are good?
- First, it depends on the kiln. If it is the cubic kiln, the top and the wall portion should use alumina hollow ball bricks. The bent seal and kiln car use heavy corundum bricks. If it is the consecutive kiln, the burning zone shall all use the alumina hollow ball bricks, and both the burning zone bent seal and the brick kiln car bent seal use the heavy corundum bricks. Ifit is the pit furnace, furnace walls and roof use the alumina hollow ball bricks, and the bottom of the furnace use heavy corundum bricks.
- Q:Who knows what is the requirement for fireproofing of interior decoration materials ?
- In addition to the underground building, combustion performance level of interior decoration materials inside windowless room , in addition to a class, should advance 1 level based on the original provisions . Library, archives and rooms storing artifacts, ceilings, walls should use class A decoration materials, and the ground should use decoration materials no lower than class B. When high temperature parts of lighting and lighting lamps and lanterns are close to non - grade A decoration materials should be taken, fire prevention measures such as thermal insulation and heat dissipation must be taken. Combustion performance level of materials used for lighting should be no lower than B. Kitchen ceiling, wall and floor should used class a decoration materials.
- Q:Refractory factory grinding brick dust harmful to the body?
- Therefore, in the workshop work must pay attention to do their own protection.
- Q:Detailed description of magnesia dolomite refractory material?
- In the cement kiln firing zone, the f-CaO in the dolomite material is easily combined with the C2S in the clinker to form C3S, so the kiln cover can be easily hung, and the kiln crust and the refractory brick are firmly combined and easy to maintain.
- Q:What's the refractoriness and how to measure the refractoriness?
- Bottom each side length is 8 mm and upper side length is 2 mm. Under a certain temperature-rising speed, when heating, refractory's resistance to high temperature from melting is called refractoriness. The properties of cross section into an equilateral triangle and height is 30 mm. When it bends down until the vertex and chassis contact temperature is the refractoriness of sample. It bends due to the influence of its weight. Make the will-measured material into standard pyrometric cone.
- Q:Who can tell somthing about how to choose fire resistant rating of fire resistance rolling shutter doors?
- There is no necessary connection between them. Different fire resistant ratings of bulidings require different fire endurance of different elemements of buildings. According to the fire endurance, fireproof doors can be divided into A-grade, B-grade and C-grade, whose fire endurance should not be less 1.2h, 0.9h and 0.6h respectively. A-grade fireproof doors can be even applied to the material whose fire resistant rating is at secondary level. "Building Regulations" mention that fire resisting shutter can be used as partition of fire?compartment in those places where setting firewalls is not so easy. When using fire resisting shutter whose fire endurance doesn't include unexposed surface temperature rise, it should install closed independent automatic sprinkler system for protection on both sides, and the sprinkler sholud last at least 3 hours.
- Q:How long is the fire endurance of Grade A fire resisting shutter
- Based on national standards GB 14102-2005 specifications. It is specified in GB 14102-2005 provides that: The fire resisting shutter whose fire endurance is not less than 3h is AAA fire resisting shutter when the unexposed surface temperature rise is used as judging condition. Therefore, it is required that the fire endurance of Grade A fire resisting shutter is 3h.
- Q:What is neutral refractory? Can refractory suppliers tell the main components of it?
- The material using Al2O3, clay, bauxite and corundum as the main components is neutral material; the material using MgO and CaO as the main components is basic material; the material using SiO2 as th emain component is acidic material.
- Q:Could you tell me how does fire protection standard of decorative material is divided?
- Building materials can be divided into four levels according to combustion performance (non-combustible, flame retardant, flammable, flammable). According to the Code for Design on Building Fire Protection and Prevention (GBJ16-1987) (revised in 2001):, the fire risk of production or storage is divided into a, b, c, d, e classes. Divided by plate material: structure material, base layel materials and fabric; Divided by fire protecrtion type: easy to burn, difficult to burn, flame retardant, incombustible material. Material has no fire rating, only the different from the time of combustion limit. Combustion performance grade A of commonly used adornment material: granite, marble, terrazzo, cement products, concrete products, gypsum, lime products, clay products, glass, ceramic tile, Mosaic, steel and alloy. I hope my answer can 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.
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Raw Materials for Refractory:Calcined Bauxite with Low Price Made in China
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 2000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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