Calcined Bauxite 50/55/65/70/75/80/85/86/87% Alumina Content

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Tianjin
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TT or LC
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25 m.t.
Supply Capability:
12000MT/MONTH m.t./month

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Product Description:

Calcined Bauxite 50/55/65/70/75/80/85/86/87% Alumina Content High Quality

 

1.Calcined Bauxite Description

bauxite, alumina or bauxite miner , main ingredients are aluminum oxide, hydrate alumina containing impurities,

is an earthy mineral.White or grey, brown yellow or light red by iron.From 4 to 3.9 g/cm3 density, hardness, 1 ~ 3, opaque, 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 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 usages of Calcined Bauxite

1.  aluminium industry.
2 . precision casting. 

3. for refractory products.
4.  aluminum silicate refractory fiber.

5. with magnesia and bauxite clinker as raw material, add appropriate binder, used for pouring ladle whole ladle lining has particularly good effects.
6. manufacture alumina cement, abrasive materials, ceramic industry and chemical industry of aluminum compounds

 

4. Calcined Bauxite Images

 

Bauxite Processing Equipments of  CNBM in China

Bauxite Processing Equipments of  CNBM in China

 

 

5. Calcined Bauxite Specification

 

Place of Origin:

Henan, China (Mainland)

Shape:

Powder, powder

Material:

Alumina Cement

SiO2 Content (%):

≤0.5

Al2O3 Content (%):

≥78

Refractoriness (Degree):

Common (1580°< Refractoriness< 1770°)

Model Number:

DRHCA

Brand Name:

CNBM

Name:

refractory cement

Application:

steel foundry

Fe2O3:

≤0.5

R2O (Na2O+0.658K2O):

≤0.4

Final time:

≤360

Initial time:

≥30

Port:

Tianjin ; Qingdao ; Lianyungang

Delivery time:

10-30 days

Refractoriness:

1580℃ - 1770℃



 

 

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.

 

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Q:What is the role of the vermiculite fireproof material?
The vermiculite fireproof slate is widely applied to construction, shipbuilding, metallurgy, electric power, aerospace and other fields by foreign countries. Vermiculite slate can be applied to furniture, firewall, ceiling, and can be used in the fire fighting access, coated steel, coated pipeline, real flame fireplace in the lining board, wall partition. It is characterized by non combustible, non melting, resistance to high temperature; permanent thermal insulation; sound insulation, non-toxic, smoke-free, green environmental protection; resistance to impact, good dimensional stability and durability of the excellent anti fungal infestation. It can be sawed, nailed, planed, drilled, it can be easily installed and constructed.
Q:how to divided the external wall thermal insulation materials fire rating
Level A: Incombustible building material: It is a kind of material that almost does not occur burning. 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: Combustible building materials: It has no any flame resisting effects, and is easy to burn, so the fire risk is high.
Q:What is the type of heat resistance property of high temperature electric furnace ?
According to the levels of refractoriness : Common refractories: & Gt: 1580 ℃ ~ 1770 ℃ advanced refractories: 1770 ℃ ~ 2000 ℃ AAA refractories; 2000 ℃
Q:What kind of fireproof material is used for steel structure?
Brushing or spraying the coating on the surface of steel structure to prevent burning and insulate heat. It also prevents undermining the rolled steel from rapid temperature elevation and avoid collapse of building for lose of supporting capacities. Agglutination material are classified as fireproof coatings for steel structures which is solvent based and Water-based steel structure fire retardant coatings. Fireproof coatings for steel structures which is solvent based are subdivided into fireproof coatings for steel structures which is solvent based with low benzene content and fireproof coatings for steel structures which is solvent based with high benzene content (TVOC≤600g / L, benzene ≤5g / kg). It can be divided by thickness. ultra-thin (CB) fireproof coatings (coating thickness ≤3mm), thin (B) fireproof coatings (3mm & amp; lt; coating thickness ≤7mm) and thick (H) steel structure fire retardant coating (7 mm & amp; lt; coating thickness ≤45㎜). The coating can be divided into non-intumescent fire retardant coating and intumescent fire retardant coating according to the the expansion properties. Slim (CB) and fire-resistant coating for steel structure and thin(B) fireproof coatings is intumescent fire retardant coating, thick (H) fire-resistant coating for steel structure is intumescent fire retardant coating. Unprotected steel structure has fire endurance of 0.25 hours.
Q:Which are fire proofing thermal insulation materials?
Fire proofing thermal insulation materials include: fire proofing heat insulating brick, fire proofing thermal baffle, fire proofing thermal insulation paper, fire proofing thermal insulation felt, fire proofing blocking, fire proofing fiber bulker, castable refractory, etc. Yizhen Decoration wish you a happy life!
Q:whether the fire resistant level of aerated concrete building blocks can reach the grade one?
Aerated concrete building blocks is made by calcareous materials (such as cement, lime) and siliceous material (such as sand, fly ash, slag), adding aluminum powder ingredients as filling agent, by mixing with water, casting molding, gas - expansion, raising the pre-cut, and then the high-pressure steam curing of silicate building blocks. when aerated concrete is at the temperatures below 600 ℃, the compressive strength will be increased slightly, when the temperature is at about 600 ℃, the compressive strength is close to the compressive strength at normal temperature, so the aerated concrete, as building materials, the fire performance can meet the national fireproffing safety standards level.
Q:What material is used for making refractory stone bowl?
It is attractive and diverse in appearance, hard, and heat fast, not stick food when using. The cooked food is attractive and delicious and rich in various trace elements which is beneficial to the human body. It is also of high quality, and all these make it popular among the customers.
Q:Are the rubber insulation materials are refractory materials?
Bushi
Q:Does the aluminum silicate fiber can be used outdoors? If not, what other refractories can be used outdoors?
Q:Who knows what kind of fire protection material is better?
Characteristic of polyurethane rigid foam thermal insulation decorative composite board: (1) ultra high cost performance, increased property's selling point (high cost performance) new model of thermal insulation material, excellent thermal insulation properties, elegant decorative effect, 50 years of service life, reduce maintenance costs and social waste. (2) it overcomes defects of traditional insulation technology (to solve the freezing and thawing, veneer cracking and shedding) traditional benzene board, the phenomenon of freezing and thawing that is easily appear in plastic extruded sheet, paint finish is easy to crack; its veneer facing can easily fall off; thermal insulation materials and wall are poorly adhered, easy off the whole. There is a themal bridge in dry hanging wall. (the characteristics of polyurethane composite board)

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