$Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China System 1$
$Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China System 2$

$Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China$

$Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China System 1$

$Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China System 2$

Raw Materials for Refractory:China Downdraft Kiln Bauxite Al2O3 Made in China

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Quick Details

Place of Origin:	Liaoning, China (Mainland)	Shape:	Powder	Material:	calcined bauxite
SiO2 Content (%):	0.00%	Al2O3 Content (%):	75.00%min	MgO Content (%):	0.00%
CaO Content (%):	0.00%	Refractoriness (Degree):	Common (1580°< Refractoriness< 1770°)	CrO Content (%):	0.00%
SiC Content (%):	0.00%	Model Number:	DB75	Brand Name:	cnbm

Packaging & Delivery

Packaging Details:

25kg,50kg,1mt,1.25mt/bag,or according to buyer's request.

Application:

1.The bauxite for aluminum industry in defense, aerospace, automotive, electrical, chemical, and daily supplies.

2.Bauxite clinker processed into fine powder and made after the casting mold. Used in military, aerospace, communications, instrumentation, machinery and medical equipment sector.

3.The bauxite can be used in refractory products. The refractoriness of high-alumina clinker is up to 1800 °c. Its features are chemical stability strong, and physical properties of sound.

4.It can manufact alumina cement, abrasive materials and aluminum compounds.

Downdraft kiln calcined bauxite

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	≥3.30

China downdraft kiln bauxite Al2O3 made in China

Q: What are the fire endurance requirements of class A fire resistant door ?: Fire endurance of class A fire resistant door is 1.5h. According to the latest fire door requirements, in FMA FMB FMC three forms, A, B and C represent categories, such as FMA on behalf of Class A fire doors (ie thermal insulation fireproof door). Fire endurances of class A,B and C fire doors are 0.5 1.0 1.5 2.0 3.0. Therefore, the fire resistance of fire door needs to be designed and the design paper will make it clear in general.

Q: What are the models of refractory cables?: The models of refractory cables: NH-KVV22 copper core flame-retardant PVC insulated and fire retardant control cables with steel belt sheath NH-KVVRP copper core flame-retardant PVC insulated and fire retardant shielding control cables with steel braiding sheath NH-KVVP2 copper core flame-retardant PVC insulated and fire retardant shielding control cables with sheath and steel belt wrapping NH-KVVRP2 copper core flame-retardant PVC insulated and fire retardant shielding soft control cables with sheath and steel belt wrapping NH-KFF copper core fluorine plastic insulated and fire retardant control cables with sheath NH -KFFR copper core fluorine plastic insulated and fire retardant soft control cables with sheath NH -KFFP copper core fluorine plastic insulated and fire retardant shielding control cables with sheath and copper wire braiding

Q: Refractory net: I think China's refractory industry does exist high yield and quality is not high.The main reason, I think, is the immaturity of the Chinese government and individuals. First of all, the government does not encourage basic research, resulting in the lack of innovation in the refractory industry; moreover, the company and enterprise take immediate interests as the most important and do not value long-term development; individual enterprises are eager for quick success and instant benefit. Users of domestic refractories, refractory products only to the price for the bid by standard of foreign products; regardless of price, quite a bit of the meaning of things.

Q: What is acid refractory material?: Many kinds of refractory materials, usually by refractoriness level is divided into ordinary refractory materials (1580 to 1770 DEG C), advanced refractories (1770 to 2000 DEG C) and special refractories (more than 2000 DEG C); according to the chemical characteristics into acid refractory material, refractory materials and basic refractory materials. In addition, there are refractories for special occasions. Acid refractory with silicon oxide as the main component, are commonly used in brick and clay brick. Silica is silica containing more than 93% silica products, raw materials used in silica, silica and other waste, the acid resistance of slag erosion ability, high load softening temperature, volume shrinkage after repeated burning, or even a slight expansion; but it is vulnerable to the erosion of basic slag, low thermal shock resistance. The brick is mainly used for thermal equipment of glass furnace, coke oven, acid furnace etc.. Clay brick with refractory clay as the main raw material, containing 30% to 46% of alumina, weak acid refractory material, heat shock resistance, resistance to acid slag, widely used. Neutral refractory is mainly composed of alumina, chromium oxide or carbon.

Q: Who knows about ranking rules of fireproofing thermal insulation materials for exterior wall?: You can try the following way to give a brief introduction of the fire?rating classification of external wall thermal insulation materials. 1. the building materials are divided into following categories in terms of combustion performance according to the national standard of GB8624-97. A-level： Incombustible building material: materials almost don't burn. B1-level: nonflammable building material: these materials are good at resisting flame. It is difficult for them to burst into fire when coming across open fire in the air or at high temperature. It will not quickly get wilder and when the fire source removes, it will be extinguished immediately. B2-level: Combustible building material: combustible building materials can play a certain role in flame resistance. It will immediately burst into flames when coming across open fire or at high temperature, and will lead to fire spreading, such as wooden column, timber roof truss and timber beam as well as stairs. B3-level: Inflammable building material: Inflammable building materials are highly flammable with no flame retardant ability. The fire risk is high. 2.The exterior wall thermal insulation materials can be classified according to fire rating. 1). Insulation materials with A-level combustion performance: rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2). The insulation materials with B1-level combustion performance: specially-treated extruded polystyrene board(XPS)/ specially-treated polyurethane(PU), phenolic aldehydegelatine powder polyphenyl granule,etc. 3). Insulation materials with B2-level combustion performance: molding polystyrene board(EPS), extruded polystyrene board(XPS), polyurethane(PU), polyethylene(PE), etc.

Q: What is the new fireproofing standard of external wall thermal insulation materials?: 1, The height of fire barrier zone is not less than 300, and the thickness is same to the external insulation system; 2, the horizontal dividing joint should be set on the boundary between fire barrier zone and thermal insulation system; 3, Fire barrier zone is usually set in the horizontal direction, the fire barrier zone should be set above the door and window openings, the distance between the low edge of barrier zone and upward side of the hole should not exceed 500mm; 4, The construction of fire barrier zone insulating layer should carried on from bottom to top with EIFS insulating layer, which is not first leave the place in the EIFS insulating layer, and then paste fire barrier zone insulation board; 5, pasting the insulation board fire barrier zone insulation board and EIFS insulation board should be stitched closely, the width is more than 2mm gap application EIFS insulation materials or fire-retardant foam polyurethane padding;

Q: What is refractory aggregate?: It includes two categories: coarse aggregate and fine aggregate.

Q: What are the types of refractory sealant?: Hello: I'm glad to help answer your questions! Measure fireproof material is high polymer plastic seal material which is used for seal. It has a dual performance of both sealing and fireproofing. It can be applied for fire protection construction of metal pipes, thermal insulated pipes and construction juncture. Fire-resisting sealant has an expansion rate of greater than 20% and it is resistant to nuclear radiation, LOCA, detergents, and it has radioactive decontamination performance. It has a durability of more than 40 years; It is free of halogen, sulfur and other toxic matters, watertight, anti-smoke, corrosion free, safe and environmental-friendly. It gives off no toxic smoke and is efficient in inflamming retardancy which is easy to construct. I hope my answer will be helpful to you.

Q: What is the fireproofing requirements of external wall thermal insulation materials?: in the 2011 and 2012 revised version of "Fireproof? Specification of Building Design" in China, the external insulating layer of above 50 meters (approximately 16 layers) of the housing must use the level A material. The latest draft for approval is not so strict, above 100 meters (about 33 layers) only use level A material. The manuscript of "Building Regulations" is also regulated building's external wall thermal insulation materials in the crowded places should be level A. Except the residential buildings and the buildings in the crowded places, the height of other buildings is greater than 50 meters, combustion performance of insulation materials should be level A; the height buildings is greater than 24 meters but not more than 50 meters, combustion performance of insulation materials should not be lower than level B1. "Building Regulations" manuscript should relax the rules on the aspect of protective coating in level B1 and B2 insulation material. The outer of level B1 and B2 level insulation material must use incombustible?material as protective coating, its thickness is changed from the original 10 cm to 5 cm. Given certain conditions, I feel you can use TDD exterior wall thermal insulation decoration integrated rock wool board for construction, which is level A fireproofing with a short construction period and good thermal insulation properties. I hope I can help you!

Q: How long is the fire endurance of fire resistant rolling shutter door?: According to the requirements of Building Regulations 7.5.1 article,the fire endurance of class A fire resistant rolling shutter door should be no less than three hours.

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