Down Draft Popular in North Ameica Kiln Bauxite 85% of CNBM in China

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1.Structure of Calcined Bauxite Description

Bauxite (aluminous soil; Bauxite) is also called the alumina or bauxite, main ingredients are alumina, hydrated alumina containing impurities, is an earthy mineral. White or gray, brown and yellow or light red by iron.  From 4 to 3.9 g/cm3 density, hardness, 1 ~ 3 is not transparent, 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 the 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 usage of the Calcined Bauxite

(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. Calcined Bauxite Images

 

Down Draft Popular in North Ameica Kiln Bauxite 85% of CNBM in China

Down Draft Popular in North Ameica Kiln Bauxite 85% of CNBM in China

5. Calcined Bauxite Specification

Low Ferric ( 83 - 85 % Alumina / 3.0 % Fe2O3 )
Abbrasive Use ( 80-82 % Alumina / 4 % Fe2O3 / 1.5 % CaO)
BFA ( 83 - 85 % Alumina / 4 % Fe2O3 / 1.2 % CaO)
Refractory ( 83- 85 % Alumina / 3 % Fe2O3 )
General Grade ( 70-82 % Alumina / 4 % Fe2O3 )
Proppant Grade ( 78-82 % Alumina / 7 % Fe2O3 / 1.0 % CaO )
For Road Surfacing ( 78-82 % Alumina / 7 % Fe2O3 / 6.0 % SiO2 ) 
Rotary Kiln Calcined Bauxite ( 70-85 % Alumina / Bulk Density Minimum 3.0 gm/cc )
Shaft Kiln calcined Bauxite ( 70-85 % Alumina / Bulk Density Minimum 2.6 gm/cc )

 

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Calcined Coal FC 90-95% for Steelmaking

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Q:Can polystyrene foam color steel plate be used as decorative fireproofing material ?
No, only non-combustible product can prevent fire. Most polystyrene foam boards are flammable which cannot prevent fire. Polyphenyl can only retard flame, highest fire retardant fire rating being B1 level. Under the same conditions, fireproof performance of polystyrene foam board will be better because most extruded sheets are made by recycling materials and contain much more impurities which will affect flame resisting property. The second reason is that high temperature in extruded sheet manufacturing technique will decompose part of flame retardants. For B1 level extruded sheet, it is difficult to reach 30 burning oxygen index, while for B2 level, it is hard to reach 32. So polyphenyl board is safer.
Q:What's the material of fireproof and wear-resisting floor?
Hello! Fireproof floor is non-flammable, wear resistant, and beautiful. It is made by construction steps and has many advantages: seamless, environment friendly, non-toxic, resistant to abrasion and corrosion, waterproof, dustproof, beautiful in appearance with integriality and no irritating odor The material of fireproof floor is in the form of liquid which will be in the shape of solid membrane after the completion of construction. It can be widely applied to the ground in the factory, residential ground or walls, and large areas like institutions and warehouses with high requirement on fire prevention. It can also be used in the field with no requirement on fire protection for it is beautiful in apperance and just like epoxy floor, and with good cost performance, it is a kind of commonly used decorative material. Hope it's helpful for you!
Q:How is the grading of the level A new material fire insulation material?
The standard to distinguish level A and level B is the different fireproofing coefficient. The level A is non-combustible. The level B is divided into B1, B2 and B3. B1 is flame retardant, B2 combustible and B3 flammable. The level A is commonly phenolic aldehyde, rock wool, thermal mortar, foam ceramics, foam glass and foam concrete on the current market. Among the advantages of level A materials, the biggest one is foam concrete currently, also known as foam cement.
Q:What kind of fireproof material is used for steel structure?
Steel is a building material that does not burn, it is shock resistant and anti-bending. In practice, Steel can increase load capacity of the building, but also add asthetic beauty to the architecture design; Unlike concrete, it can bend and stretch. Therefore, the steel construction industry has been favored, such as one-story or multi-story buildings, skyscrapers, factories, warehouses, waiting rooms and waiting hall, which is the common use of steel. However, the steel as building materials has unavoidable defects in fire prevention, its mechanical properties such as yield point, tensile strength and modulus of elasticity, decrease abruptly due to temperature rise.
Q:What is refractory?
Refractory is an inorganic nonmetallic material with minimum refractoriness of 1580 ℃. Now, refractory is not defined merely by judging that whether its refractoriness is at above 1580 ℃. Currently, refractory, an inorganic nonmetallic material, are widely used in metallurgy, ceramics, power and other industrial fields.
Q:What are the qualifications of refractory industry?
1 business license 2 tax registration certificate 3 organizing institution bar code 4 production permit
Q:What are fireproofing materials?
1. Fire-resistant coatings like finishing fire retardant paint, fire retardant coating member and fire-resistant coating for steel structure; 2. Fireproofing materials of flame-retardant plastics and plastic products, textiles, flame retardant fabrics, building materials and products, flooring materials, and wall insulation system; 3. Fireproof element of fireproof panels, fire doors, fire resistant window frames, fire resistant shutter, fire-resistant glass, elevator landing doors, ventilation ducts, fire-proof sealing materials, and fire protection smoke exhaust fans.
Q:what's the detailed address of fireproof and thermal inuslation matertial market?
following are the detailed address of fireproof and thermal inuslation matertial market: Central China Building decoration materials market,Hanxi 1 road No 95, Xinyongan Tangcai decoration material makert, Jianghan district Tangcai road No 53, Baoye decoration material wholesale market, Wuhan Wuchang district Minzhu road No 620.
Q:What is fire retardant coating mainly used for?
The functions of refractory coating are as follows: 1. Non-intumescent fire retardant coating is mainly used for the fireproofing of wood, fiber board and other materials, and it is used in the surfaces of wood truss, roof, doors, windows and etc. Second, the intumescent fire retardant coating can be divided into non-toxic intumescent fire retardant coating, expansible fire retardant coating emulsions, solvent-based fire retardant coating. 3. Non-toxic intumescent fire retardant coating can be used to protect cables, polyethylene pipes and insulation board. 4, The expansible fire retardant coating emulsion and solvent-based fire retardant coating can be used for fireproofing of buildings, electricity power, and cables. 5. New fire retardant coating: Transparent fire retardant coating, water-soluble intumescent fire retardant coating, fireproof emulsion paint, polyvinyl acetate emulsion fire retardant paint, water-soluble intumescent fire retardant paint drying at room temperature, fire insulation coating polyolefin fire retardant coating, modified high chloropolyethylene fire retardant paint, chlorinated rubber fire retardant coating, firewall coating, intumescent coatings, wire and cable fire retardant paint, new fire retardant coating, casting fire retardant coating and so on.
Q:What kind of refractories do the anode baking furnace use?
Use refractory bricks.

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