Al2O3 88% Calcined Bauxite of China Bauxite Ore

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China main port
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
20000 m.t./month

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Product Description:

Product Description

Mingyue Bauxite and Calcined Bauxite:

 

Mingyue Bauxite, ie. bauxite ore, whose main content is Aluminium oxide with, who is department of hydrated

alumina containing impurities in appearance of earthy mineral;

 

Mingyue Calcined Bauxite is burnt bauxite, who is used for producing the existing uneven materin in nature --

alumina and aluminium. The purpose of calcining bauxite is to remove crystal water and improve the content of alumina. 

 

Mingyue Bauxite Secification:

 

Al2O3

Fe2O3

TiO2

K2O+Na2O

CaO+MgO

Bulk density

≥65

≤2.5

≤4.0

≤0.3

≤0.5

≥2.6

≥75

≤2.5

≤4.0

≤0.3

≤0.5

≥2.7

≥80

≤2.5

≤4.0

≤0.3

≤0.5

≥2.8

≥85

≤2

≤4.0

≤0.3

≤0.5

≥3.0

≥86

≤2

≤4.0

≤0.3

≤0.5

≥3.1

≥87

≤2

≤4.0

≤0.3

≤0.5

≥3.2

≥88

≤1.8

≤4.0

≤0.25

≤0.5

≥3.25

 

Mingyue Refractory Bauxite Level:

 

Level

Chemical Composition (%)

Refractoriness

(℃)

Bulk Density

(g/cm3)

Al2O3

CaO

Fe2O3

superfine

>85

<0.6

<1.4.0

>1790

>3.6

first grade

>80

<0.6

<3.0

>1790

>3.0

second grade+1

70~80

<0.8

<3.0

>1790

>2.8

sencond grade

60~70

<0.8

<3.0

>1770

>2.65

third grade

50~60

<0.8

<2.5

>1770

>2.55

Product Uses

Mingyue Bauxite and Calcined Bauxite:

1. Aluminum industry;

2. Precision casting;

3. Refractory industry;

4. Silica acid aluminum 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;

7. Ceramic industry, and chemical industry for making aluminium compounds.

Al2O3 88% Calcined Bauxite of China Bauxite Ore

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Q:What do refractory materials include?
What refractories are included? Refractories include AZS brick, corundum brick, direct-bonded magnesia-chrome, carborundum brick, silicon nitride bonded silicon carbide brick, non-oxide refractory materials such as nitride, silicides, sulfides, borides and carbides, oxidation calcium, chromium oxide, aluminum oxide, magnesium oxide and beryllium oxide.
Q:What are the advantages and disadvantages of new external wall fireproof and thermal inuslation matertials?
Advantages: 1)Low requirements on the waterproof, weather resistance and other technical indicators. The dry wall and gypsum plastering mortar, etc. can meet the requirements and can be easily obtained; 2) The inner insulation material are separated by the floor, and construct within a height of only a storey , without erecting scaffold ; 3) In the hot summer and cold winter or hot summer and warm winter area, the inner insulation meets the requirements; 4) The glass beads overcome the shortcomings of expanded perlite, like, large amount water absorption, easy powdering, big volumetric shrinkage in the slurry mixing process, easily leading to post-insulation product performance degradation and hollowing, cracking, and also make up for the defects of polystyrene particles organic materials, like, flammable, poor fire performance, producing harmful gas at high temperatures and anti-aging, poor weather resistance, poor workability and large rebound in construction, ect. Disadvantages of external wall insulation : 1) Since the ring beam, slab and column structure would cause thermal bridges, leading a greater heat loss; 2) It is of low intensity, high water absorption, easy to shrink and crack. The insulation system is prone to cracking, leaking or loss and other common quality problems, especially it is easy to crack at the seams, thus being difficult to exsit as long as the building. 3) It is inconvenient for the users to redecorate and hang ornaments; 4) It takes up indoor used space;
Q:How long is the fire endurance of the rock wool board?
Some time ago we did an experiment, the result is no change in the burning 30 minutes. The following is the picture of rock wool after the test .
Q:What are the materials for refractory materials? What are their name?
High temperature oxide materials in refractory special applications, such as aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide, zirconium oxide, refractory compounds, such as carbides, nitrides, borides, silicides and sulfides; high temperature composite materials, including metal ceramics, high temperature inorganic coatings and fiber reinforced ceramics.
Q:How long is the fire endurance of Grade A fire resisting shutter
The fire endurance of Grade A fire resisting shutter is not lower than 1.20h. Use fire resisting shutter as fire compartment separation in places where it is difficult to set firewall. When fire resisting shutter whose unexposed surface temperature rise is used as judging condition of fire endurance is used, its fire endurance should not be lower than 3h. When fire resisting shutter whose unexposed surface temperature rise is used as judging condition of fire endurance is not used, individual protection of  closed automatic water spray system shoule be set at two sides of the shutters and duration of water spray system should not be less than 3.0h.
Q:What antioxidant will be used in refractories?
Antioxidants (Antioxidants) is the material to prevent bad influence of oxygen. It is a kind of material that can help to capture and neutralize free radicals, the category of material to remove free radicals damage to human body. Some of the body's antioxidant is self-synthesis, others is also from the food supply. Strong antioxidant such as ASTA (short for astaxanthin), etc., generally human cannot synthesize and it must be intaked from food. (1)antioxidants in the food can protect food from oxidative damage and deterioration. (2) it has the antioxidant effect in the human body's digestive tract and prevent oxidative damage in the digestive tract. (3) after being absorped, it can play a role in other body tissues and organs. (4)It is derived from certain foods that have antioxidant effect of extract and can be used as a treatment drug. Antioxidant mechanism includs chelated metal ion, scavenging free radicals, quenching singlet oxygen and removal of oxygen and inhibit oxidase activity, etc
Q:Current development status of qualitative refractory materials.
Q:Is there a worker in (Jigang refractory plant)?
Exactly, you are not in the strict sense of the refractory plant contract worker, your contract is not signed and refractory plant, your wage system, and the worker in the factory is not the same, you can not follow the normal off-duty execution system
Q:Which brand of thermal insulating refractory is good?
The most famous is the dragon, Morgan, Luyang, which are good at making ordinary thermal insulation materials and whose products are cheap but quality. Guangdong ALISON nanometer aerogel is more expensive. The heat conductivity coefficient is 0.018. It can work under 1000℃
Q:Who knows which chrome refractories produced by the Henan refractory plant can be used for continuous casting?
Chrome drainage sand can be used for coupling process there are many manufacturers do it, this is mainly a lot of chrome, chrome iron ore mainly refers to the drainage sand, adding ladle material amount regulator performance guide. Drainage sand as filling material of ladle bottom nozzle, one hand can be sintered at low temperature, to avoid joining the molten steel drainage sand floating accident, on the other hand, in the high temperature and long time refining steel surface can not meet the state of sintering is too thick, otherwise it will affect the automatic pouring rate, Hua Heng worth a try I'm not favored, my sky is the wind or rain rainbow you hate yourself in the manipulation of really useless emotional heart to still ache for breaking up before the sorry shuttle time in the moving picture of the clock in the opposite direction when the initial time begins to move back to love you

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