Raw Materials for Refractory:Bauxite/Calcined Bauxite for CNBM in China
- Ref Price:
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- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 12000 m.t./month
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Bauxite/ Calcined Bauxite for Refractory Material 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
Al2O3 | 80%min | |||
SiO2 | 14%max | |||
Fe2O3 | 2.5%max | |||
TiO2 | 4.0%max | |||
CaO+MgO | 0.6%max | |||
K2O+Na2O | 0.3%max | |||
B.D. | 2.6g/ccm min. | |||
Al2O3 | 85%min | |||
SiO2 | 9%max | |||
Fe2O3 | 2.0%max | |||
TiO2 | 4.0%max | |||
CaO+MgO | 0.6%max | |||
K2O+Na2O | 0.3%max | |||
B.D. | 3.10g/ccm min. | |||
Al2O3 | 86%min | |||
SiO2 | 8.5%max | |||
Fe2O3 | 2.0%max | |||
TiO2 | 4.0%max | |||
CaO+MgO | 0.6%max | |||
K2O+Na2O | 0.4%max | |||
B.D. | 3.10g/ccm min. | |||
Refractoriness: | 1770°< Refractoriness< 2000° | |||
Al2O3 | 87%min | |||
SiO2 | 7%max | |||
Fe2O3 | 2.0%max | |||
TiO2 | 4.0%max | |||
K2O+Na2O | 0.6%max | |||
B.D. | 3.0-3.10g/ccm | |||
H2O | 0.5%max (excess to be deducted from the invoice weight) | |||
NO. | Size | Size Distribution | Quantity(MT) | Price( FOB Tianjing) |
1 | 0-1mm | 0-0.5mm 60%max | ||
2 | 1-3mm | 90% min | ||
3 | 3-5mm | 90% min | ||
Total (MT) | ||||
Packing: | In 1MT big bag with bottom spout | |||
Shipment: | TBN | |||
Destination: | TBN | |||
Validity: | 15 days | |||
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 is the role of adding chromium oxide green in unshaped refractory materials
- Generally, less is added in corundum or corundum spinel refractory material, but it can significantly improve the material performance such as high temperature strength, erosion resistance, thermal and shock stability, etc.
- Q: Can someone professionally introduce the classifications of refractories?
- It can be divided into two categories of ordinary and special refractory. Ordinary refractories can be devided into acidic, neutral and alkalinee refractories according to chemical properties. Special refractory can be devided into high temperature oxide, refractory compounds and high-temperature composite materials according to the compositions. Furthermore, it canbe devided into ordinary refractory products (1580 ~ 1770 ℃), advanced refractory products (1770 ~ 2000 ℃) and super refractory products (above 2000 ℃) according to the strength of refractoriness. It can be divided into bulks (standard brick, special-shaped brick, etc.), special shape (crucible, sagger, pipe, etc.), fibrous (aluminum silicate, zirconia and boron carbide, etc.) and Indefinite shape (refractory clay, castableand ramming mass, etc.) according to the shapes of products. According to the sintering process, it can be divided into sintered products, cast products, melting jetting products.
- Q: I wanna ask that magnesium oxide is refractory?
- Magnesium oxide is used in refractory material, because it has the following characteristics and properties: 1, high stability: Anti-oxidation, anti-reduction, thermal decomposition; 2, high melting point, 2800 degrees; 3, low prices. In particular, the stability and melting point is very good, I hope I can give you help.
- Q: Would you like to know if there are any enterprises in Mianyang that need fire-resistant materials?
- Big business needs to be usedIntroduce several big: Jiuzhou 208827 and Changhong
- Q: What is the material of fire resistant glass reinforced plastics grating?
- What is the material of fire resistant glass reinforced plastics grating?
- Q: What are the application of old refractory bricks?
- It can be used for refractory bricks again, as long as the quality is good. It is much more cost-effective than Bayerite.
- Q: What does refractory mean?
- Ordinary refractories are often used brick, semisilica brick, clay brick, high alumina brick, magnesia brick etc..Special materials often use AZS brick, corundum brick, magnesia chrome brick, silicon carbide, silicon nitride bonded silicon carbide, nitrides, silicides, sulfide, boride, carbide and other non oxide refractory materials; calcium oxide, chromium oxide, alumina, Magnesium Oxide, beryllium and other refractory materials. Often used insulation refractories are diatomite products, asbestos products, insulation panels and so onUnshaped refractory materials commonly used are fettling, refractory ramming material, refractory castable, refractory plastic material, refractory clay, refractory gunning, refractory cast material, fireproof coating, lightweight castable, mud etc..
- Q: What are first rate fire resistant window materials?
- Natural environmental protection, non-poisoned, non-peculiar smell, non-radioactive; non-combustible, fireproofing, moisture-proof, corrosion-resistant; easy construction, lightweight, high strength, www. jsxsmy.
- Q: What's the commonly used refractory material for ladle?
- 1. According to the refractoriness, it can be classified as follows: common refractory: 1580℃ ~ 1770℃; high grade refractory: 1770℃ ~ 2000℃; superrefractory: 2000 ℃; 2. According to the shape and demension of the product, it can be classified as follows: standard form : 230mm×113mm ×65mm of no more than four measuring scale, (demension ratio) Max: Min
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Raw Materials for Refractory:Bauxite/Calcined Bauxite for CNBM in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 12000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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