90% Round Kiln Calcined Bauxite For Alumina Industry

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0 m.t.
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25000 m.t./month

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Product Description:

1.Sepcification ,

AL2O3           90%min

Fe2O3           1.5%max

SiO2             4%max

TiO2             4%max

CaO+MgO  0.4%max

R2O            0.20%max

Moisture Absorption 3% max

Bulk Density  3.4g/cm3 min

2.Size200mesh,325mesh,100mesh,0-1mm,1-3mm,3-5mm and 5-8mm

3.Description

Bauxite is earthy mineral which consists mainly of Al2O3 , a kind of hydrated alumina containing impurities. According to the usage, It can be divided into the levels of Metallurgy, chemical industry, grinding, cement, and refractory. Clinker is pale yellow and dark grey. It is mainly used for high aluminum refractory material, and also can be used to make the fused corundum. Our materials of calcined bauxite is mainly D-K Style Bauxite Ore.

4.Specification,

   Item

 AL2O3

 FE2O3

  TIO2

K2O+Na2O

CaO+MgO

Bulk density

Moisture Absorption

  AL70

  ≥  70

  ≤3.0

   ≤4.0

       ≤0.6

     ≤0.6

    ≥2.7

               ≤5

  AL75

  ≥75

  ≤2.5

  ≤4.0

       ≤0.5

    ≤0.5

    ≥2.8

               ≤5

 AL80

  ≥80

  ≤2.5

  ≤4.0

       ≤0.3

    ≤0.5

    ≥2.9

               ≤5

 AL85

  ≥85

  ≤2

  ≤4.0

       ≤0.3

    ≤0.5

    ≥3.0

               ≤4

 AL86

  ≥86

  ≤2

 ≤4.0

       ≤0.3

    ≤0.5

    ≥3.1

               ≤4

 AL87

  ≥87

  ≤2

 ≤4.0

       ≤0.3

    ≤0.5

   ≥3.2

               ≤4

 AL88

 ≥88

  ≤1.8

 ≤4.0

       ≤0.25

    ≤0.5

   ≥3.25

               ≤4

 AL90

 ≥90

  ≤1.5

 ≤4.0

      ≤0.25

    ≤0.5

   ≥3.4

               ≤3

90% Round Kiln Calcined Bauxite For Alumina Industry

5.Material

Our material is from Yangquan, Shanxi,China. Yangguan bauxite ore have the best plasticity and adhesion. It can improve their product life.

Furnace and fuel,We have 6 shaft furnaces and use the gas for fuel. It can increase the temperature to fully burn, improve the bulk density and reduce impurities. In addition, using the gas can reduce the energy consumption, less CO2 emission for improvement of the work environment.


 Annual supply, 60,000mt of calcined bauxite per year

90% Round Kiln Calcined Bauxite For Alumina Industry

 

Inspection standard,

GB/T17617-1998----Sampling of raw materials and unshaped products

GB/T 2999-2002----Determination of bulk density of granular materials

GB/T 6900-2006----Chemical analysis of alumina-silica refractories

GB-325782---- Methods for chemical analysis of bauxite

SN/T 0481.1~0481.6—1995----Methods for inspection of bauxite for export

YB/T5180-1993----High-lumina bauxite and hard clay impurities inspection methods

GB/T 15545-1995----Unshaped refractory--Packing, marking, transportation  and  storage

Application,

1, Aluminium metallurgy

2, Precision casting/Investment casting,

    bauxite grog fines can be made into mold for precision casting.

3, Refractory, High alumina bauxite's refractoryiness can reach 1780oC. It is charactered by good       chemical stability and mechanical performance.

4, Aluminium silicate refractory fiber, The high alumina bauxite grog can melt under 2000oC to 2200oC in the electric arc furnace.After a series of processing, it can become aluminium silicate refractory fiber, which can be made into fiber blanket, cloth, plate and so on

5, Mixing magnesia and bauxite grog with binders to pour the molten steel ladle for better overall lining performance.

6,Producing bauxite cement

7,Abrasives

8, Ceramics industry

9, Chemistry industry for all kinds of aluminium compound.


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Q:whether the fire resistant level of aerated concrete building blocks can reach the grade one?
the fire resistant level of aerated concrete building blocks can reach the grade one level. Aerated concrete strength grade shall be divided according to the concrete cubic compressive strength value. Use the symbol C and the cube compressive strength value (in N / mm2 or MPa gauge) to express. According to GB50010-2002 "concrete structure design specifications" provisions, ordinary concrete is divided into fourteen levels, namely: C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, C80 .
Q:what's the classification of fireproof materials?
Fireproof materials are used in construction, in various forms and it has played an absolute role in modern fireproofing, common fireproofing materials include fireproof panel, fire door, fireproofing glass, fire retardant coating, fireproof bag,etc Or the material itself has a high temperature resistance, heat-resistant, flame-retardant properties. Most of them are used for the construction industry.
Q:I would like to know if there is any requirement for refractories in the crucible type high-frequency smelting furnace Worry! I hope you can help me! This time!
Good thermal stability, the crucible wall hour working temperature fluctuation is great, and the temperature field distribution is uneven, so the crucible wall will continue to produce volume expansion and contraction, resulting in cracks, which directly affect the service life of the crucible
Q:Who knows how to divide the building fire grade and fire resistance grade?
I hope to help you building fireproof rank division is one of the most basic measure in building fire safety technical measures, Building's fireproof rank is divided into class one, two, three, four according to China's architectural design specification. Fire-resistant capability of the highest level is the strongest; Fire resistance of four level of the weakest. The fire resistance level of a building depends on the combustion performance and fire resistance of the building components that comprise the building. The so-called building component refers to a series of basic components, such as wall, foundation, beam, column, floor, stair, ceiling and so on. The judgment condition of the fire resistance There are three conditions for components' fire resistance limit to be reached, namely, the fire resistance limit of the building component: Loss of support and integrity; loss of time to fire the role of the time; as long as any of these three conditions is met, it will reach its limit of fire. Hope my answer will help you.
Q:What are the specifications of fireclay bricks?
Standard sizes of refractory bricks in our country are: 230mm × 114mm × 65mm; standard density: 1, Diatomite insulating bricks 0.7 g / cubic centimeter; 2, Clay bricks 2.9 g / cubic centimeter; 3, High alumina brick 3.2 g / cubic centimeter. You can convert according to the actual volume, and the reference value can be calculated.
Q:Are fire materials poisonous after burning?
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:Does anyone know the fire endurance of steel stud partition?
The fire endurance degree is 1 hour. which is in line with the national building material fireproofing test standards. CaSo4.2H2O is molecular gypsum molecular structure formula, containing 20% ​​water, crystal water and free water, when putting on fire, 10% of the surface water will slowly evaporate, remaining10% of crystal water. It is a class A fire retardant material itself. The longest time can be 4 hours.
Q:How to make fire resistant materials for building stoves
Legend of the old version has been upgraded, or can not enter the server, is not legend stopped?
Q:What kinds of fireproof and fire retardant materials are there?
It is the fire rating.fire retardant material is not completely fireproof. It is time-limited.
Q:How long does it take for refractory cement to solidify?
1. First you should be aware of the concepts of condensation and condesation time. Refractory cement belongs unshaped refractories, which when added water or liquid binding agent to mix, the agitation material will gradually lose thixotropy or plasticity and become in a state of solidification, thus is solidified. The time needed to finish the process is called solidification time. The whole process is divided into initial and final set. When beginning to lose plasticity called the initial setting, when called plasticity completely lost the final setting. 2. For refractory cement, the solidification time depends on the matching of the material and the parts and using methods. Under normal circumstances, in order to meet the requirements of time of construction, the initial set time should be no shorter than 40min, and the final set time should be no longer than 8H 3. There are also some exceptions. When refractory cement is used for spraying and injection operation together with other refractory castable, the set time is required as short as possible, sometimes flash set is required to prevent the occurrence of peeling or collapse of the spraying layer.

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