Raw Materials for Refractory:Low Impurity High Alumina Calcined Bauxite in Bulk of CNBM in China
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Low Impurity High Alumina Calcined Bauxite in Bulk of CNBM in China
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.
(3) is used for refractory products. High bauxite clinker refractoriness is as high as 1780, chemical stability strong, and good physical properties.
(4) aluminum silicate refractory fiber. With light weight, high temperature resistance, good thermal stability, low thermal conductivity, heat capacity is small and the advantages of resistance to mechanical shock. Used in iron and steel, nonferrous metallurgy, electronics, petroleum, chemical, aerospace, atomic energy, defense and other industries.
(5) in magnesia and bauxite clinker as raw materials, add the appropriate binder, used for pouring ladle whole ladle lining has particularly good effects.
(6) manufacture alumina cement, abrasive materials, ceramic industry and chemical industry can be aluminum of various compound.
4. Calcined Bauxite Images
5. Calcined Bauxite Specification
| Place of Origin: | China (Mainland) | Shape: | Powder | Material: | Bauxite ore |
| SiO2 Content (%): | -- | Al2O3 Content (%): | 87.5% | MgO Content (%): | -- |
| CaO Content (%): | -- | Refractoriness (Degree): | Common (1580°< Refractoriness< 1770°) | CrO Content (%): | -- |
| SiC Content (%): | -- | Model Number: | HQB | Brand Name: | CNBM |
| Name: | Low Impurity High alumina calcined bauxite in bulk | Company: | CNBM | Type: | R&D- Production-Sales/Manufacture |
| Experience: | 51years | Certification: | ISO,CNAB,IAF | Main markets: | India,South Korea,Denmark, Russia, Europe, the United States |
| Fe2O3: | ≤1.6 | K2O: | ≤0.15 | Na2O: | ≤0.12 |
| Bulk Density: | ≥3.25g/cm3 |
♥ Research of application basis, new technical process and new technology, development of new product, and technical consultation.
♥ Optimum solution and product supply of refractories for high temperature industries, such as iron&steel, non-ferrous, petrochemical and building materials.
♥ Engineering design, contract and consult for refractories, and civil architecture design.
♥ Research,development, manufacture and sale of superhard materials.
♥ R&D, manufacture and sale of special packing materials for export.
♥ Inspection,supervision and arbitration of refractories.
♥ Consultation and services in refractories information.
♥ Training and cultivation of high-level talents in refractories profession.
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: which kind of material is chosen for fireproofing window?
- (1) the inside filler material of steel, wood frame should use incombustible material. (2) window frame uses steel frame or wooden frame with certain strength that can safeguard the integrity and stability of the components. (3) steel frame and mound layer can choose galvanized?steel?sheet or stainless steel plate. Its selection criteria conform to the article 5.1 in GB12955 Steel Fireproof Door General Technical Condition. (4) the selection criteria of wooden frame and mound layer should conform to the article 5.1 in GB12955 Wooden Fireproof Door General Technical Condition. (5) fire-resistant glass can choose test approved products without affecting the fire resistance of fireproofing windows . Light transmittance of glass should not be less than 75% of same layers commom sheet glass. (6) the sealing material between the frame and the fire-resistant glass should use flame retardant materials, it can play a role of fireproofing and smoke insulation in the fire. (7) hardware accessories should be tested qualified approved supporting product.
- Q: who knows the requirements of refractory for forge furnace?
- Forging heating furnace working temperatures above 1000 ° C, reasonably choosing refractory for build furnace has an important meaning for guaranteeing the normal operation of the heating furnace, improving the service life of furnace and energy saving. refractory is generally required to have the following properities: 1, it should be equipped with the properity of no deformation and melting under certain temperature. 2, it should be equipped with the neccessary structural strength without softening deformation in high temperature. 3, volume stability at high temperature, brick body won't be deformation or cracked due to expansion and contraction; 4, not broken and peel off under rapid changes of temperature or uneven heating; 5, resistant to chemical erosion of molten metal, slag and furnace gas,etc.
- Q: What refractories are used in various parts of the blast furnace.
- Blast furnace from top to bottom has the throat, hearth staves, waist, bosh, hearth and furnace bottom. the specific structure is as follows: The throat is the first to be affected by the impact and abrasion, generally use high-density alumina bricks. the upper and central portion of temperature furnace is only 400 ~ 800 ℃, the area with high alumina bricks and silicate bricks. The lower part of furnace is subject to erosion and dust erosion alkali metal vapor due to high temperatures, it is required in such case to use high quality clay brick,high alumina brick,carborundum brick,corundum brick that is slag resistance and alkali?resistance, temperature resustant and wearproof. Furnace bosh temperature reached 1400 ~ 1600 ℃, serverly eroded by slag,vapor, flush. so we use carborundum brick and reaction-bonded silicon?carbide?brick. Bosh temperature reaching1600 ~ 1650 ℃, using alumina brick, corundum brick or silicon carbide brick. the temperature of Hearth near the upper portion of the outlet zone at 1700 ~ 2000 ℃, use of silicate bricks and corundum castable graphite filler, silicon carbide bricks. In 1450 Silly twitch bottom temperature sealing die of hunger slander bet phoenix astringent preserved Grade ~ 1500 ℃, use of graphite bricks and microporous carbon bricks, now use more corundum brick, corundum mullite brick and synthetic mullite brick. x26lt;P class x3d "share-btn"x26gt;
- Q: What's the classification of flameproof glass, the refractory time of fireproofing glass.
- Fireproofing glass partition has the advantages of thermal insulation,resistance slow fire spreading and smoke insulation. when the fire broke out, it can creat favorable conditions for the rescuing of personnel, property and buildings, reduce the loss to mininum level, it has gained people's favor and has huge market potential. it's widely used in computer rooms, and high precision laboratory, school,core parts of party and government organs. In the past two years, there are several major fire accidents happened in domestic, such as Shanghai jing 'an district high-rise residential, CCTV new address Beipei building, which have caused serious loss and damage. Fireproofing glass naturally become the focus, China has carried out a wide range of fire control safety inspection work, the fireproofing consciousness of people has been gradually improved. Fireproofing glass, fire-resistant glass partition, firewall, fire doors, and other products are highly emphasized. Industry analyst of Beijing Lisiduoge partition materials believes that fireproofing glass partition is a new kind of construction fire-proof material, and is mainly used for making firewall, fire doors, fire partition,etc. Europe divide fireproofing glass into composite thermal insulation type and one-side complete fireproof glass. Divided from fire resistance levels, fireproofing glass can be divided into 30 minutes, 45 minutes, 60 minutes and 90 minutes four levels. Domestic fire partition indicators in line with international standards has fully embodied the countrymen have paid more and more attention on fireproofing safety.
- Q: Who knows that among refractory materials, insulation boards from which refractory material industry is superior in quality?
- Using high temperature insulation material during casting process .In the molding, assembly the insulation?board on the ingot head or install heat insulation cap . There are three ways to install the molded steel insulation board and install insulation?board on at the head of the ingot, namely, clamping, nail fixation and mosaic technique.Compared with clay-based liner, the use of insulating board will improve high steel billet rate up to about 5% to 10%.
- Q: How to deiron refractory?
- Our company uses magnetic separation method.
- Q: Manganese steel belongs to refractories
- NO!
- Q: What are fire?ratings of wall thermal insulation material?
- 1.thermal insulation material with grade A combustion performance: YT inorganic active insulation material for wall thermal,rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2.thermal insulation material with grade B combustion performance: Extruded polystyrene board(XPS)after special treatment/polyurethane(PU) after special treatment, phenolic aldehyde,gelatine powder polyphenyl granule, etc. 3.thermal insulation material with grade B2 combustion performance: Molding polystyrene board(EPS), extruded polystyrene board(XPS), polyurethane(PU), polyethylene(PE), etc.
- Q: What kinds of fireproof materials does the safe use?
- The fireproof materials of the safe, cement foam. It is often said recently that the safes with cement inside are bad. Actually, it is not like this. Chemical means are taken to make the cement inside safes rise like a leaven dough so as to achieve good insulation. The principle is the cement foam. Fireproof safes with such techniques have good performance in terms of fireproofing and anti-theft. The manufacturing processes of this fireproof safe are highly technical, some safes with poor techniques have problems in quality. Here are some data of the foam cement.
- Q: What are the main materials in concrete fireproofing material?
- it can be roughly divided into: fire-resistant coating for steel structure, finishing fire retardant paint, tunnel fire coatings, concrete fire?retardant?coating, cable refractory coating. fire-resistant coating for steel structure is divided into: Indoor ultra-thin fireproof coatings for steel structure, indoor thin steel structure fireproofing coating, indoor thick steel structure fireproofing coating, outdoor ultra-thin fireproof coatings for steel structure, Outdoor thin steel structure fireproofing coating, outdoor thick steel fireproofing coating. I hope it can help you. Hope to adopt my opinion Thank you! )
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Raw Materials for Refractory:Low Impurity High Alumina Calcined Bauxite in Bulk of CNBM in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 11 m.t
- Supply Capability:
- 11111111 m.t/month
OKorder Service Pledge
OKorder Financial Service
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