Raw Materials for Refractory:Chinese Calcined Bauxite 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:	Shanxi, China (Mainland)	Shape:	Block	Material:	Alumina Block
SiO2 Content (%):	<8%	Al2O3 Content (%):	75%-90%	MgO Content (%):	<0.5
CaO Content (%):	<0.5	Refractoriness (Degree):	1770°< Refractoriness< 2000°	CrO Content (%):	0.0
SiC Content (%):	0.0	Model Number:	75,80,85,86,87,88,90	Brand Name:	CNBM
Fe2O3:	3.0 max	K2O+NA2O:	0.3 max	TIO2:	0.4 max
CaO+MgO:	0.5max	shapes:	granula and powder	bulk density:	2.70min
H.S.code:	2508300	Moisture:	0.03% max	color:	yellow,black and white granula and powder
application:	abrasive ,cement ,chemical, metallurgical, and refractory and so on

Packaging & Delivery

Packaging Details:	25kg/Bag,1Mt/Bag,1.25Mt/Bag; Or as per Client's request
Delivery Detail:	7-15 days upon receipt of prepayment by TT or L/C

Specifications

Calcined bauxite:
1.16 years producing experience;
2.self-owned mines;
3.competitive price;
4.strictly quality control

Calcined bauxite specification:

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

Q: Refractory net: Foreign enterprises created not only for profit, but a career, hope to be able to last forever; domestic, especially private enterprises, most of them do not have such a vision, only to a loophole, cash, so never to do this industry.Welcome to discuss the statements of a school.

Q: How to calculate the thickness of choosing refractory? Such as steel ladle should choose what kind of refractory and using what thicknes?: The relative production is lower and material cost is higher, the lining of the refractory is thicker: 1, determine the weight of the refractory material according to the main structure of the bearing capacity, to prevent damage to equipment, fire-proof material damage after the surplus size and thickness of the thermal conductivity of refractory materials, the smaller the effective volume, production output, the cost of materials) to consider the selection of refractory material thickness. 3 from the point of usage (usage cycle, relative usage cycle is longer, because under the condition of invariable in the device's overall dimensions of the refractory lining thickness to determine several basic principles, according to the volume of the weight computation of refractories and refractory thickness, these items must be fully consider the pros and cons before decided. 2 according to maximum temperature that shell can withstand.

Q: Application of refractory materials in petroleum industry: For example, natural gas transportation, chemicals, equipment, fillers, safety, insulation, and even building materials for housing are available.

Q: What's the refractoriness and how to measure the refractoriness?: Bottom each side length is 8 mm and upper side length is 2 mm. Under a certain temperature-rising speed, when heating, refractory's resistance to high temperature from melting is called refractoriness. The properties of cross section into an equilateral triangle and height is 30 mm. When it bends down until the vertex and chassis contact temperature is the refractoriness of sample. It bends due to the influence of its weight. Make the will-measured material into standard pyrometric cone.

Q: How to prolong the furnace age of Induction furnace by using fireproof materials?: magnesia solid materials have thermal endurance and erosion/ performance and its change of temperature is likely to cause cracks. properties of materials (aluminum) in such case have to be taken into consideration.

Q: What are the specific steps of stirring the steel ladle castable?: Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.

Q: What is the the best matching ratio of refractory cement?: Refractory cement is very easy to use. Add some water and mix, and it will harden. Generally there is no need to add other binding agents, but you can add some refractory aggregate and powder. If you use only refractory cement, it will produce a lot of cracks after high temperature. Generally refractory cement can withstand temperature of about 1300 degrees. Refractory cement can be used together with ordinary sand, and the ratio of cement and the sand is about 30 percent.

Q: Could you tell me how does fire protection standard of decorative material is divided?: Divided by plate material: structure material, base layel materials and fabric; Divided by fire protecrtion type: easy to burn, difficult to burn, flame retardant, incombustible material. Material has no fire rating, only the different from the time of combustion limit. Building fire protection. Building fire protection is the fire prevention measures of buildings. In the architectural design, fire protection measures should be taken to prevent fires and reduce fire hazards to life and property. Building fire prevention measures includs prophylaxis before the fire and measures during the fires. The former is mainly to determine the fire resistance rating and fire-proof structure, control fuel quantity and space easy to fire site; The latter mainly for fire partition, setting of evacuation and smoke, fire-fighting equipment, etc. In ancient China, flammable wood are usually taken as a building material, which has accumulated many experiences for the building fire protection .

Q: What are the material requirements of class A fire resistant door ?: What are the material requirements of class A fire resistant door ?

Q: what materials can make external wall fireproofing paint have the fireproofing effect: Adding flame retardant or fire retardant materials can be fireproofing, which commonly referred to as the external walls of fire retardant coating or fire retardant coating. Principle: Fireproof paint itself is flame-retardant or non-combustible, so that the protected base material can not directly contact with the air in order to the ignition delay and reducing the burning speed; except that, it also has a lower thermal conductivity, which can delay the transfer of flame temperature to the protected base material; fireproof paint thermal can decompose non-combustible inert gas by heating to dilute the thermal decomposition of combustible gas in protected object, making it difficult to burn or slow down the speed of burning.

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