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:The classification of clay according to refractoriness, and what is the plasticity and plasticity index of clay?
Q:how does the fire endurance of first rate fire resistant window?
class A window not less than 1.5 hours, class B window not less than 1 hours, Class C window not less than 0.5 hours.
Q:Are there any differences between insulation and refractory materials ?
I will explain to you in a simple way. Refractory materials can resist more than 1200 degrees, some of which are not insulation materials, such as firebricks, which can directly contact with heat source, has little insulation effect. Ceramic fiber, high silica, etc. are all refractory materials which can insulate. Insulation materials with poor performance usually is lower than 800 degrees, which have large thermal resistance, and low thermal conductivity, high porosity. Thus they reduce the thermal loss. To put it simply, insulation materials store most of the heat and only let a small part of heat lose through the air, thus the heat has been isolated. Glass fiber, rock wool, flexible material for thermal insulation, etc. I hope you can understand it.
Q:What are the models of bauxite with high alumina?
China Ferrous Metal Industry Corporation released the industry standard of bauxite (YS / T78-94) in 1994. According to this standard, bauxite can be divided to sedimentary diaspore, stacked type diaspore and lateritic gibbsite. According to the chemical composition, it can be divided into nine trade marks as LK12-70, LK8-65, LK5- 60, LK3-53, LK15-60, LK11-55, LK8-50, LK7-50 and LK3-40. In addition to the provisions of chemical composition of bauxite, the standard also requires that the water of sedimentary diaspore shall not exceed 7% and water of stacked type diaspore and lateritic gibbsite shall not exceed 8%. Moreover, particle size of bauxite should be not greater than 150mm. Bauxite shall not be mixed with clay, limestone and other debris.
Q:How to use fireclay?
Mix refractory cement (ie aluminate cement CA50) with some refractory aggregate (bauxite, slag from flint clay) and powder (ie, crushed aggregate). Add some water to the mixture and stir, and it can be used. The clinker can be refractory powder.
Q:How many kinds of A-level fireproof and thermal insulation materials are there?
A-level non-combustible materials are mostly inorganic thermal insulation materials, as well as some organic compound materials can also be non-combustible; but if the convenient construction is required, panels are exempted, you can only choose inorganic thermal insulation mortar.
Q:How to understand qualitative and qualitative refractory materials?
Such as amorphous refractory castable, referred to as bulk loading, cast material, ramming material, refractory clay etc., utensils and other special products. Amorphous refractory material products, refractory heat insulating bricks and experimental and industrial crucible, spraying materials, such as burning bricks, electric melting brick, turn it into required shape and process heat treatment in where it is used.
Q:What are the commonly used fire protection materials
Firewall. The fire wall is made of non combustible material, and is directly installed on the base of the building or the reinforced concrete frame or fire proof walls . Fireproof limit of the firewall, according to the current "building regulations", is 4 hours, wheras the specification of Technical specification for concrete structures of tall building is 3 hours. doors resistant to fire, heat in a certain period of time These door usually prevent the spread of fire and gas in the fire resistant wall, staircase, pipe well. Fire door can be divided into steel fire doors, wood fire doors and composite materials fire door according to the material used. According to the limit of fire resistance can be divided into the class A fire door (1.2h), B fire doors (0.9), class C fire door (0.6h); (3) fire window. Windows resistant to fire, heat in a certain period of time It is usually installed in the fire resistance wall or doors; the fire shutter. This roller shutter can be refractory in a certain period of time. It is typically used for heat and fire insulation in escalator with difficulties to install fire resistant wall, fire resistant valve and smoke resistant valve. Fire resistant valve is installed in the ventilation and air conditioning system of air supply and return air duct, usually in the open state, fire, It will be turn off when the pipeline gas temperature reached 70 degrees, can meet the requirement for fire resistance and insulation for gas and fire. Smoke fire resistant damper installed in the exhaust system pipe, when the pipeline gas temperature reached 280 degrees, it will close automatically, insulating fire and gas.
Q:What refractory material lead smelting furnace needs?
Q:Which fire-resistant materials have good viscidity?
The viscidity of fire-resistant materials is also known as the binding performance of fire-resistant materials. It can be divided into chamotte and chemical binder. Both can work at normal or high temperature. The most commonly used chamotte are soft clay and aluminate cement. The commonly used chemical binders include sodium silicate, phosphoric acid, aluminum sulphate, aluminium phosphate, phenolic resin, etc. Fire resistant material is a complicated and overloaded system and we cannot know its materials and chemical components from the name alone. Both gunning mix and repair mix contain binder components. If they can used after adding water, then they may contain clay or fire resistan aluminum silicate cement.

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