Refractory Grade Calcined Bauxite 85% Sands

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Tianjin
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25 m.t.
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12000 m.t./month

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Product Description:

Refractory Grade Calcined Bauxite 85% Sands


Calcined Bauxite Introduction 

Property

Specifications

Name

aluminous soil bauxite

Color

White, offwhite, auburnish yellow or light red (with Fe)

Bulk Density

2.55~3.6 g/cm3

Hardness

1~3

Main usages

1. Aluminium metallurgy    2.Refractory

 

Calcined Bauxite Specifications

Grade

AL2O3

FE2O3

TIO2

K2O+Na2O

CaO+MgO

Bulk density

75

75min

≤3.0

≤4.0

≤0.3

≤0.5

≥2.70

80

80min

≤3.0

≤4.0

≤0.3

≤0.5

≥2.80

85

85min

≤2

≤4.0

≤0.3

≤0.5

≥3.00

86

86min

≤2

≤4.0

≤0.3

≤0.5

≥3.10

87

87min

≤2

≤4.0

≤0.3

≤0.5

≥3.20

88

88min

≤1.8

≤4.0

≤0.25

≤0.5

≥3.25

90

90min

≤1.8

≤4.0

≤0.25

≤0.5


 

Calcined Bauxite Applications

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 refractoriness can reach 1780°C.

    It is charactered by good chemical stability and mechanical performance. (Al2O3 ≥48% with low Fe2O3)

4. Aluminium silicate refractory fiber: The high alumina bauxite grog can melt under 2000°C-2200°C     in the electric arc furnace.After a series of processing, it can become aluminium silicate refractory fiber, 

which can be made into fiber blanket, plate,cloth.

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

    performance.


Usage 
(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 compounds




Pictures:

Refractory Grade Calcined Bauxite 85% SandsRefractory Grade Calcined Bauxite 85% Sands

Refractory Grade Calcined Bauxite 85% SandsRefractory Grade Calcined Bauxite 85% Sands



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Q:what's the varieties of fire-proof sealing material?
ATD-AB, organic fire-proof caulking, fire retardant bag, fire retardant net, fire retardant ring, fire barrier wrap, fireproofing sealing strip, flexibility fireproofing coiled material, fireproof glue, etc., fireproofing sealing materials currently on the market can be divided into two types, one is the traditional type: flexible organic caulking, WXY-II, fire retardant bag, fire bulkhead, cable refractory coating; there are some new materials used in large-scale projects: fireproofing coating board system (fireproofing coating board, intumescent fireproof sealing tape, elastic fireproof sealant, Waterborne Fire-retardant Coating), fire retardant module system (fire retardant module, sealing gum, cable refractory coating), fireproofing plaster system (fireproofing plaster, sealing gum, cable refractory coating).
Q:How should fireproof building materials be ranked?
Division of fire-proof grade of buildings is one of the most basic measures in the fire-fighting technology and measures of buildings. According to our national code of building design, fire-proof grade of buildings are classified into four levels of first, second, third and fourth, of which the first level is the highest in fire resistance and the fourth level is lowest in fire resistance. Fire resistance rating of buildings depends on the combustion performance and fire endurance of the building component. The so-called building component refers to the walls, foundations, beams, pillars, floors, stairs, ceilings, etc.
Q:What is fire retardant coating mainly used for?
Fire retardant coating is a coating which is applied to the surface of buildings and structures and can form a protective layer of fire retardancy and thermal insulation. It can reduce the flammability of the coated materials and block the rapid spread of fire so as to improve fire endurance of the coated materials. Features of fire retardant coating: (1) Fire retardant coating itself has a flame-retardancy or non-inflammability, and it can prevent the protected substrate from direct contact with the air, and delay ignition and reduce the burning speed of the objects. (2) In addition to flame retardancy or non-inflammability, the fire retardant coating itself has a a low thermal conductivity, which can delay the transfer of flame temperature to the substrate to be protected. (3) When heating, fire retardant coating decomposes non-combustible inert gas to dilute the combustible gas decomposed by the protected, making it difficult to burn or slow down the burning rate. (4) Fire retardant coating containing nitrogen will decomposite NO, NH3 and other basic groups, which compound with the organic radicals and interrupt the chain reaction so as to reduce the temperature. (5) intumescent fire retardant coating will expand and foam when heating, and form a carbon foam insulation to block the protected objects, thus delaying the transmission of heat to the substrate.
Q:what's the standard of fireproofing material?
Class A1 is divided according to the combustion performance of GB8624-2006 building materials and products. Specific technical index requirements are: 1, the temperature rise ≤30 degrees;mass loss rate ≤50%; combustion duration time is 0; 2, main components, overall products, gross calorific value of external secondary components ≤2.0MJ/kg; any inner secondary component ≤1.4MJ/kg; (there are difference between homogeneous and non-homogeneous). Z802 building materials noninflammability testing furnace has to be used for testing technical indicators mentioned in test 1, using Z805 building materials combustion heat value to test technical indicators mentioned in test device 2.
Q:Does anyone know about the classification standards of B2-level fireproof and thermal insulation materials?
1.The insulation materials with A-level combustion performance: EPS Hairong module, rock wool, glass wool, foam glass, ceramic foam, foam cement, closed-cell perlite, etc. 2. The insulation materials with B1-level combustion performance: specially-treated extruded polystyrene boards(XPS)/ specially-treated Polyurethane(PU), Phenolics, Polystyrene rubber powder particles,etc. 3. The insulation materials with B2-level combustion performance: Expanded polystyrene sheets(EPS), Extruded polystyrene boards(XPS), Polyurethane(PU), Polyethylene(PE), etc. See the 2009 measures of building technology. The A-level insulation material is only fireproof, the insulation performance of it is worse than that of organic XPS \\\\ EPS material. Currently I think that the best insulation material should be Hairong EPS module, it not only achieves the requirement of insulation but also fulfills the goal of fireproofing, and the comprehensive unit price of it is not expensive. The insulation materials in the domestic market have their own disadvantages, you'd better take the building demands into consideration, and use the materials that are within the acceptable range.
Q:What kind of refractory decorative board has good quality?
Formica, Grignard, Wilsonart, Yami Home, Germany Board and Priscilla Board are all good choice. They are the high-end brands in fireproof panel. Hope it is helpful to you.
Q:What is the function of red stone refractory materials
Q:What types does soft fire prevention materials have?
Soft type fire resistant species. Finishing fire retardant paint, component fire retardant coating, fire-resistant coating for steel structure and othe kinds of fire retardant coating. Flame retardant plastics and its products, textiles, building materials, flame retardant fabric and exterior wall thermal insulation system products, floor materials, such as various types of fire prevention materials;Fire prevention board, fire doors, fire prevention, fire shutter, fire glass window frame, elevator doors, ventilation pipes, fire blocking material, fire smoke exhaust fan and other kinds of artifacts (resistance) fire prevention.
Q:Does anyone know the refractory temperature of fire-resistant glass?
Ordinary glass will be completely liquefied in the furnace of about 1100 degrees for half an hour and will not deform below 600 degrees. toughened glass fire-resistant glass is the product of ordinary glass after being processed Glass will mainly burst after encountering fire. When unevenly heated or encountering sudden drastic changes in temperature, ordinary glass will burst if the sharp temperature difference is over 70-120 degrees and toughened glass will burst at 200 degrees. It is not yet clear of the bursting temperature for the refractory glass. If the overall glass is not heated evenly, it will have no significant change below 600 degrees, and it will deform with the increase of temperature until melting. The fire-resistant time of the glass you said is the time to heat the glass into the extreme temperature differences it can endure, which should not be more than 10 minutes
Q:What is fireproofing material? Are fireproof materials the same thing with thermal insulation materials and refractories?
The refractory material is capable of withstanding high temperature burning, while fireproofing material is to prevent burning. They are different from each other

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